COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Confirming the first detection of a merging dual SMBH system at high-z Exp. Code: gs044b Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Cristiana Spingola Address: University of Bologna - INAF-IRA via Gobetti 101 40129 Bologna Italy Phone: +39 3938231373 EMAIL: spingola@ira.inaf.it Fax: Phone during observation: Observing mode: Notes: v2: T6 IF C->B, BBC 9-12 -> 5-8 COVER LETTER: Schedule for VLBA_LA (Code La ) Page 2 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 29 Oct 2019 Day 302 --- Next scan frequencies: 4860.25 4860.25 4892.25 4892.25 4924.25 4924.25 4956.25 4956.25 Next BBC frequencies: 760.25 760.25 792.25 792.25 824.25 824.25 856.25 856.25 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 20 45 10 J2018+0831 16 11 45 27.8 99.9 -4.1 -53.9 0 0 20 45 10 20 46 10 --- 16 12 45 28.0 100.0 -4.1 -53.9 60 8 20 45 11 20 46 10 MG2016 16 12 45 29.4 97.1 -4.1 -55.2 -11 8 20 46 21 20 49 40 --- 16 16 16 30.2 97.7 -4.1 -55.1 199 33 20 46 11 20 49 40 J2018+0831 16 16 16 28.7 100.6 -4.0 -53.8 -11 33 20 49 51 20 51 10 --- 16 17 46 29.0 100.9 -4.0 -53.7 79 44 20 49 41 20 51 10 MG2016 16 17 46 30.5 97.9 -4.0 -55.1 -11 44 20 51 21 20 54 40 --- 16 21 17 31.2 98.5 -4.0 -55.0 199 69 20 51 11 20 55 20 J2018+0831 16 21 57 29.8 101.6 -4.0 -53.5 29 69 20 55 20 20 56 20 --- 16 22 57 30.0 101.7 -3.9 -53.5 60 77 20 55 21 20 56 20 MG2016 16 22 57 31.5 98.8 -4.0 -54.9 -11 77 20 56 31 20 59 50 --- 16 26 28 32.2 99.4 -3.9 -54.8 199 103 20 56 21 20 59 50 J2018+0831 16 26 28 30.7 102.3 -3.9 -53.3 -11 103 21 00 01 21 01 20 --- 16 27 58 31.0 102.6 -3.9 -53.2 79 113 20 59 51 21 01 40 J2018+0831 16 28 18 31.1 102.6 -3.8 -53.2 14 113 Stopped 21 07 40 --- 16 34 19 32.2 103.7 -3.7 -52.9 360 113 21 09 10 3C345 16 35 49 85.7 20.4 -0.1 -158.4 -27 113 21 09 37 21 14 10 --- 16 40 50 86.0 7.6 -0.0 -172.0 273 148 21 09 11 21 18 40 J2018+0831 16 45 21 34.4 105.7 -3.6 -52.2 156 148 21 18 40 21 19 40 --- 16 46 21 34.6 105.9 -3.5 -52.1 60 156 21 18 41 21 19 40 MG2016 16 46 21 36.2 102.8 -3.6 -53.8 -11 156 21 19 51 21 23 10 --- 16 49 52 36.8 103.4 -3.5 -53.6 199 181 21 19 41 21 23 10 J2018+0831 16 49 52 35.3 106.5 -3.5 -51.9 -11 181 21 23 21 21 24 40 --- 16 51 22 35.6 106.8 -3.5 -51.8 79 191 21 23 11 21 24 40 MG2016 16 51 22 37.1 103.7 -3.5 -53.6 -11 191 21 24 51 21 28 10 --- 16 54 52 37.8 104.4 -3.4 -53.3 199 217 21 24 41 21 28 50 J2018+0831 16 55 32 36.4 107.6 -3.4 -51.5 29 217 21 28 50 21 29 50 --- 16 56 33 36.6 107.8 -3.4 -51.4 60 225 21 28 51 Schedule for VLBA_LA (Code La ) Page 3 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 29 Oct 2019 Day 302 --- 21 29 50 MG2016 16 56 33 38.2 104.7 -3.4 -53.2 -11 225 21 30 01 21 33 20 --- 17 00 03 38.9 105.3 -3.3 -53.0 199 250 21 29 51 21 33 20 J2018+0831 17 00 03 37.3 108.5 -3.3 -51.1 -11 250 21 33 31 21 34 50 --- 17 01 33 37.6 108.8 -3.3 -51.0 79 261 21 33 21 21 34 50 MG2016 17 01 33 39.1 105.6 -3.3 -52.9 -11 261 21 35 01 21 38 20 --- 17 05 04 39.8 106.3 -3.3 -52.6 199 286 21 34 51 21 39 00 J2018+0831 17 05 44 38.4 109.6 -3.2 -50.6 29 286 21 39 00 21 40 00 --- 17 06 44 38.5 109.8 -3.2 -50.5 60 294 21 39 01 21 40 00 MG2016 17 06 44 40.2 106.6 -3.2 -52.5 -11 294 21 40 11 21 43 30 --- 17 10 15 40.8 107.3 -3.2 -52.2 199 320 21 40 01 21 43 30 J2018+0831 17 10 15 39.2 110.5 -3.1 -50.2 -11 320 21 43 41 21 45 00 --- 17 11 45 39.5 110.8 -3.1 -50.1 79 330 21 43 31 21 45 00 MG2016 17 11 45 41.1 107.6 -3.1 -52.1 -11 330 21 45 11 21 48 30 --- 17 15 16 41.8 108.3 -3.1 -51.8 199 355 21 45 01 21 49 10 J2018+0831 17 15 56 40.3 111.7 -3.1 -49.7 29 355 21 49 10 21 50 10 --- 17 16 56 40.5 111.9 -3.0 -49.6 60 363 21 49 11 21 50 10 MG2016 17 16 56 42.1 108.6 -3.1 -51.7 -11 363 21 50 21 21 53 40 --- 17 20 27 42.8 109.4 -3.0 -51.4 199 389 21 50 11 21 53 40 J2018+0831 17 20 27 41.1 112.6 -3.0 -49.2 -11 389 21 53 51 21 55 10 --- 17 21 57 41.4 113.0 -3.0 -49.1 79 399 21 53 41 21 55 10 MG2016 17 21 57 43.1 109.7 -3.0 -51.2 -11 399 21 55 21 21 58 40 --- 17 25 27 43.8 110.4 -2.9 -50.9 199 425 21 55 11 21 59 20 J2018+0831 17 26 07 42.2 113.9 -2.9 -48.6 29 425 21 59 20 22 00 20 --- 17 27 08 42.4 114.1 -2.9 -48.5 60 432 21 59 21 22 00 20 MG2016 17 27 08 44.1 110.8 -2.9 -50.7 -11 432 22 00 31 22 03 50 --- 17 30 38 44.7 111.6 -2.8 -50.4 199 458 22 00 21 22 03 50 J2018+0831 17 30 38 43.0 114.9 -2.8 -48.1 -11 458 22 04 01 22 05 20 --- 17 32 08 43.3 115.2 -2.8 -47.9 79 468 22 03 51 22 05 20 MG2016 17 32 08 45.0 111.9 -2.8 -50.2 -11 468 22 05 31 22 08 50 --- 17 35 39 45.7 112.7 -2.7 -49.8 199 494 22 05 21 Schedule for VLBA_LA (Code La ) Page 4 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 29 Oct 2019 Day 302 --- 22 09 30 J2018+0831 17 36 19 44.1 116.2 -2.7 -47.4 29 494 22 09 30 22 10 30 --- 17 37 19 44.3 116.4 -2.7 -47.3 60 501 22 09 31 22 10 30 MG2016 17 37 19 46.0 113.1 -2.7 -49.6 -12 501 22 10 42 22 14 00 --- 17 40 50 46.6 113.9 -2.7 -49.2 198 527 22 10 31 22 14 00 J2018+0831 17 40 50 44.9 117.2 -2.6 -46.8 -12 527 22 14 12 22 15 30 --- 17 42 20 45.2 117.6 -2.6 -46.6 78 537 22 14 01 22 15 30 MG2016 17 42 20 46.9 114.2 -2.6 -49.0 -12 537 22 15 42 22 19 00 --- 17 45 51 47.6 115.1 -2.6 -48.6 198 563 22 15 31 22 19 40 J2018+0831 17 46 31 45.9 118.6 -2.5 -46.1 28 563 22 19 40 22 20 40 --- 17 47 31 46.1 118.9 -2.5 -45.9 60 570 22 19 41 22 20 40 MG2016 17 47 31 47.9 115.5 -2.5 -48.4 -12 570 22 20 52 22 24 10 --- 17 51 02 48.5 116.3 -2.5 -47.9 198 596 22 20 41 22 24 10 J2018+0831 17 51 02 46.7 119.7 -2.5 -45.4 -12 596 22 24 22 22 25 40 --- 17 52 32 47.0 120.1 -2.4 -45.2 78 606 22 24 11 22 25 40 MG2016 17 52 32 48.8 116.7 -2.5 -47.7 -12 606 22 25 52 22 29 10 --- 17 56 02 49.4 117.6 -2.4 -47.2 198 631 22 25 41 22 29 50 J2018+0831 17 56 42 47.7 121.2 -2.4 -44.6 28 631 22 29 50 22 30 50 --- 17 57 43 47.9 121.5 -2.4 -44.4 60 639 22 29 51 22 30 50 MG2016 17 57 43 49.7 118.0 -2.4 -47.0 -12 639 22 31 02 22 34 20 --- 18 01 13 50.3 118.9 -2.3 -46.4 198 665 22 30 51 22 34 20 J2018+0831 18 01 13 48.5 122.4 -2.3 -43.9 -12 665 22 34 32 22 35 50 --- 18 02 43 48.7 122.8 -2.3 -43.6 78 675 22 34 21 22 35 50 MG2016 18 02 43 50.6 119.3 -2.3 -46.2 -12 675 22 36 02 22 39 20 --- 18 06 14 51.2 120.3 -2.2 -45.6 198 700 22 35 51 22 40 00 J2018+0831 18 06 54 49.4 124.0 -2.2 -42.9 28 700 22 40 00 22 41 00 --- 18 07 54 49.6 124.2 -2.2 -42.7 60 708 22 40 01 22 41 00 MG2016 18 07 54 51.5 120.7 -2.2 -45.4 -12 708 22 41 12 22 44 30 --- 18 11 25 52.1 121.7 -2.1 -44.8 198 733 22 41 01 22 44 30 J2018+0831 18 11 25 50.2 125.2 -2.1 -42.1 -12 733 22 44 42 22 46 00 --- 18 12 55 50.4 125.7 -2.1 -41.8 78 743 22 44 31 Schedule for VLBA_LA (Code La ) Page 5 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 29 Oct 2019 Day 302 --- 22 46 00 MG2016 18 12 55 52.4 122.1 -2.1 -44.5 -12 743 22 46 12 22 49 30 --- 18 16 26 53.0 123.2 -2.1 -43.9 198 769 22 46 01 22 50 10 J2018+0831 18 17 06 51.1 126.9 -2.0 -41.0 28 769 22 50 10 22 51 10 --- 18 18 06 51.3 127.2 -2.0 -40.8 60 777 22 50 11 22 51 10 MG2016 18 18 06 53.3 123.7 -2.0 -43.6 -12 777 22 51 22 22 54 40 --- 18 21 37 53.9 124.7 -2.0 -42.9 198 802 22 51 11 22 54 40 J2018+0831 18 21 37 51.9 128.3 -2.0 -40.1 -12 802 22 54 52 22 56 10 --- 18 23 07 52.1 128.7 -1.9 -39.8 78 812 22 54 41 22 56 10 MG2016 18 23 07 54.1 125.2 -2.0 -42.6 -12 812 22 56 22 22 59 40 --- 18 26 37 54.7 126.3 -1.9 -41.9 198 838 22 56 11 23 00 20 J2018+0831 18 27 18 52.7 130.0 -1.9 -38.9 28 838 23 00 20 23 01 20 --- 18 28 18 52.9 130.3 -1.8 -38.7 60 845 23 00 21 23 01 20 MG2016 18 28 18 55.0 126.8 -1.9 -41.5 -12 845 23 01 32 23 04 50 --- 18 31 48 55.5 127.9 -1.8 -40.8 198 871 23 01 21 23 04 50 J2018+0831 18 31 48 53.4 131.5 -1.8 -37.9 -12 871 23 05 02 23 06 20 --- 18 33 18 53.7 132.0 -1.8 -37.6 78 881 23 04 51 23 06 20 MG2016 18 33 18 55.8 128.4 -1.8 -40.4 -12 881 23 06 32 23 09 50 --- 18 36 49 56.3 129.6 -1.7 -39.6 198 907 23 06 21 23 10 30 J2018+0831 18 37 29 54.3 133.4 -1.7 -36.6 28 907 23 10 30 23 11 30 --- 18 38 29 54.4 133.7 -1.7 -36.4 60 914 23 10 31 23 11 30 MG2016 18 38 29 56.6 130.2 -1.7 -39.2 -12 914 23 11 42 23 15 00 --- 18 42 00 57.1 131.4 -1.6 -38.4 198 940 23 11 31 23 15 00 J2018+0831 18 42 00 54.9 134.9 -1.6 -35.5 -12 940 23 15 12 23 16 30 --- 18 43 30 55.2 135.5 -1.6 -35.1 78 950 23 15 01 23 16 30 MG2016 18 43 30 57.3 131.9 -1.6 -38.0 -12 950 23 16 42 23 20 00 --- 18 47 01 57.9 133.2 -1.6 -37.1 198 975 23 16 31 23 20 40 J2018+0831 18 47 41 55.7 137.0 -1.5 -34.1 28 975 23 20 40 23 21 40 --- 18 48 41 55.9 137.3 -1.5 -33.8 60 983 23 20 41 23 21 40 MG2016 18 48 41 58.1 133.8 -1.5 -36.7 -13 983 23 21 53 23 25 10 --- 18 52 12 58.6 135.1 -1.5 -35.7 197 1008 23 21 41 Schedule for VLBA_LA (Code La ) Page 6 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 29 Oct 2019 Day 302 --- 23 25 10 J2018+0831 18 52 12 56.4 138.6 -1.4 -32.8 -13 1008 23 25 23 23 26 40 --- 18 53 42 56.6 139.2 -1.4 -32.4 77 1018 23 25 11 23 26 40 MG2016 18 53 42 58.8 135.7 -1.4 -35.3 -13 1018 23 26 53 23 30 10 --- 18 57 12 59.3 137.1 -1.4 -34.3 197 1044 23 26 41 23 30 50 J2018+0831 18 57 53 57.1 140.8 -1.4 -31.2 27 1044 23 30 50 23 31 50 --- 18 58 53 57.2 141.2 -1.3 -31.0 60 1051 23 30 51 23 31 50 MG2016 18 58 53 59.6 137.8 -1.4 -33.8 -13 1051 23 32 03 23 35 20 --- 19 02 23 60.0 139.2 -1.3 -32.8 197 1077 23 31 51 23 35 20 J2018+0831 19 02 23 57.7 142.6 -1.3 -29.9 -13 1077 23 35 33 23 36 50 --- 19 03 53 57.9 143.2 -1.3 -29.5 77 1087 23 35 21 23 36 50 MG2016 19 03 53 60.2 139.8 -1.3 -32.3 -13 1087 23 37 03 23 40 20 --- 19 07 24 60.7 141.3 -1.2 -31.2 197 1112 23 36 51 23 41 00 J2018+0831 19 08 04 58.4 144.9 -1.2 -28.2 27 1112 23 41 00 23 42 00 --- 19 09 04 58.5 145.3 -1.2 -27.8 60 1120 23 41 01 23 42 00 MG2016 19 09 04 60.9 142.0 -1.2 -30.6 -13 1120 23 42 13 23 45 30 --- 19 12 35 61.3 143.6 -1.1 -29.5 197 1145 23 42 01 23 45 30 J2018+0831 19 12 35 58.9 146.8 -1.1 -26.7 -13 1145 23 45 43 23 47 00 --- 19 14 05 59.0 147.4 -1.1 -26.2 77 1155 23 45 31 23 47 00 MG2016 19 14 05 61.5 144.2 -1.1 -28.9 -13 1155 23 47 13 23 50 30 --- 19 17 36 61.9 145.8 -1.0 -27.7 197 1180 23 47 01 23 51 10 J2018+0831 19 18 16 59.5 149.3 -1.0 -24.8 27 1180 23 51 10 23 52 10 --- 19 19 16 59.6 149.7 -1.0 -24.4 60 1188 23 51 11 23 52 10 MG2016 19 19 16 62.1 146.6 -1.0 -27.1 -13 1188 23 52 23 23 55 40 --- 19 22 47 62.5 148.3 -1.0 -25.8 197 1214 23 52 11 23 55 40 J2018+0831 19 22 47 59.9 151.3 -0.9 -23.2 -13 1214 23 55 53 23 57 10 --- 19 24 17 60.1 152.0 -0.9 -22.7 77 1224 23 55 41 --- Start: Tue 29 Oct 2019 Day 302 -- Stop: Wed 30 Oct 2019 Day 303 --- 23 57 10 MG2016 19 24 17 62.6 149.0 -0.9 -25.3 -13 1224 23 57 23 00 00 40 --- 19 27 47 63.0 150.7 -0.9 -23.9 197 1249 23 57 11 Schedule for VLBA_LA (Code La ) Page 7 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 00 01 20 J2018+0831 19 28 28 60.5 153.9 -0.8 -21.2 27 1249 00 01 20 00 02 20 --- 19 29 28 60.6 154.4 -0.8 -20.8 60 1257 00 01 21 00 02 20 MG2016 19 29 28 63.2 151.5 -0.8 -23.3 -13 1257 00 02 33 00 05 50 --- 19 32 58 63.5 153.3 -0.8 -21.8 197 1282 00 02 21 00 05 50 J2018+0831 19 32 58 60.9 156.0 -0.8 -19.5 -13 1282 00 06 03 00 07 20 --- 19 34 29 61.0 156.8 -0.7 -18.9 77 1292 00 05 51 00 07 20 MG2016 19 34 29 63.6 154.1 -0.8 -21.2 -13 1292 00 07 33 00 10 50 --- 19 37 59 63.9 155.9 -0.7 -19.8 197 1317 00 07 21 00 11 30 J2018+0831 19 38 39 61.3 158.8 -0.7 -17.3 27 1317 00 11 30 00 12 30 --- 19 39 39 61.4 159.3 -0.7 -16.9 60 1325 00 11 31 00 12 30 MG2016 19 39 39 64.1 156.8 -0.7 -19.1 -13 1325 00 12 43 00 16 00 --- 19 43 10 64.3 158.6 -0.6 -17.6 197 1350 00 12 31 00 16 00 J2018+0831 19 43 10 61.6 161.0 -0.6 -15.5 -13 1350 00 16 13 00 17 30 --- 19 44 40 61.7 161.8 -0.6 -14.9 77 1360 00 16 01 00 17 30 MG2016 19 44 40 64.4 159.5 -0.6 -16.9 -14 1360 00 17 44 00 21 00 --- 19 48 11 64.7 161.4 -0.5 -15.3 196 1386 00 17 31 00 21 40 J2018+0831 19 48 51 62.0 163.9 -0.5 -13.1 26 1386 00 21 40 00 22 40 --- 19 49 51 62.0 164.4 -0.5 -12.7 60 1393 00 21 41 00 22 40 MG2016 19 49 51 64.8 162.3 -0.5 -14.6 -14 1393 00 22 54 00 26 10 --- 19 53 22 65.0 164.3 -0.4 -13.0 196 1419 00 22 41 00 26 10 J2018+0831 19 53 22 62.2 166.2 -0.4 -11.3 -14 1419 00 26 24 00 27 40 --- 19 54 52 62.3 167.0 -0.4 -10.6 76 1428 00 26 11 00 27 40 MG2016 19 54 52 65.1 165.1 -0.4 -12.3 -14 1428 00 27 54 00 31 10 --- 19 58 22 65.2 167.1 -0.4 -10.6 196 1454 00 27 41 00 31 50 J2018+0831 19 59 03 62.4 169.2 -0.3 -8.8 26 1454 00 31 50 00 32 50 --- 20 00 03 62.5 169.7 -0.3 -8.4 60 1461 00 31 51 00 32 50 MG2016 20 00 03 65.3 168.1 -0.3 -9.8 -14 1461 00 33 04 00 36 20 --- 20 03 33 65.5 170.1 -0.3 -8.2 196 1487 00 32 51 00 36 20 J2018+0831 20 03 33 62.6 171.6 -0.3 -6.9 -14 1487 00 36 34 00 37 50 --- 20 05 04 62.6 172.4 -0.2 -6.2 76 1496 00 36 21 Schedule for VLBA_LA (Code La ) Page 8 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 00 37 50 MG2016 20 05 04 65.5 171.0 -0.3 -7.4 -14 1496 00 38 04 00 41 20 --- 20 08 34 65.6 173.1 -0.2 -5.7 196 1522 00 37 51 00 42 00 J2018+0831 20 09 14 62.7 174.7 -0.2 -4.4 26 1522 00 42 00 00 43 00 --- 20 10 14 62.7 175.2 -0.1 -3.9 60 1529 00 42 01 00 44 30 3C345 20 11 45 49.3 291.8 3.5 78.5 -3 1529 00 44 33 00 49 30 --- 20 16 45 48.3 292.1 3.6 77.9 297 1568 00 44 31 00 54 00 J2018+0831 20 21 16 62.8 181.2 0.0 0.9 180 1568 00 54 00 00 55 00 --- 20 22 16 62.8 181.7 0.1 1.4 60 1575 00 54 01 00 55 00 MG2016 20 22 16 65.7 181.2 0.0 1.0 -14 1575 00 55 14 00 58 30 --- 20 25 47 65.7 183.3 0.1 2.7 196 1601 00 55 01 00 58 30 J2018+0831 20 25 47 62.8 183.6 0.1 3.0 -14 1601 00 58 44 01 00 00 --- 20 27 17 62.8 184.4 0.1 3.6 76 1610 00 58 31 01 00 00 MG2016 20 27 17 65.7 184.2 0.1 3.5 -14 1610 01 00 14 01 03 30 --- 20 30 48 65.6 186.3 0.2 5.2 196 1636 01 00 01 01 04 10 J2018+0831 20 31 28 62.7 186.7 0.2 5.5 26 1636 01 04 10 01 05 10 --- 20 32 28 62.7 187.2 0.2 5.9 60 1643 01 04 11 01 05 10 MG2016 20 32 28 65.6 187.3 0.2 6.0 -14 1643 01 05 24 01 08 40 --- 20 35 59 65.5 189.3 0.3 7.7 196 1669 01 05 11 01 08 40 J2018+0831 20 35 59 62.6 189.1 0.3 7.4 -14 1669 01 08 54 01 10 10 --- 20 37 29 62.5 189.9 0.3 8.1 76 1678 01 08 41 01 10 10 MG2016 20 37 29 65.4 190.2 0.3 8.4 -14 1678 01 10 24 01 13 40 --- 20 40 59 65.3 192.2 0.3 10.1 196 1704 01 10 11 01 14 20 J2018+0831 20 41 40 62.3 192.1 0.4 9.9 26 1704 01 14 20 01 15 20 --- 20 42 40 62.3 192.6 0.4 10.3 60 1711 01 14 21 01 15 20 MG2016 20 42 40 65.2 193.2 0.4 10.9 -14 1711 01 15 34 01 18 50 --- 20 46 10 65.0 195.2 0.4 12.5 196 1737 01 15 21 01 18 50 J2018+0831 20 46 10 62.1 194.4 0.5 11.8 -14 1737 01 19 04 01 20 20 --- 20 47 41 62.1 195.2 0.5 12.4 76 1746 01 18 51 01 20 20 MG2016 20 47 41 65.0 196.1 0.5 13.2 -14 1746 01 20 34 01 23 50 --- 20 51 11 64.8 198.0 0.5 14.8 196 1772 01 20 21 Schedule for VLBA_LA (Code La ) Page 9 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 01 24 30 J2018+0831 20 51 51 61.8 197.3 0.5 14.1 26 1772 01 24 30 01 25 30 --- 20 52 51 61.8 197.8 0.6 14.6 60 1779 01 24 31 01 25 30 MG2016 20 52 51 64.6 198.9 0.5 15.6 -14 1779 01 25 44 01 29 00 --- 20 56 22 64.4 200.9 0.6 17.2 196 1805 01 25 31 01 29 00 J2018+0831 20 56 22 61.5 199.6 0.6 16.0 -14 1805 01 29 14 01 30 30 --- 20 57 52 61.4 200.3 0.6 16.6 76 1814 01 29 01 01 30 30 MG2016 20 57 52 64.3 201.7 0.6 17.8 -14 1814 01 30 44 01 34 00 --- 21 01 23 64.0 203.5 0.7 19.3 196 1840 01 30 31 01 34 40 J2018+0831 21 02 03 61.1 202.4 0.7 18.2 26 1840 01 34 40 01 35 40 --- 21 03 03 61.0 202.9 0.7 18.6 60 1847 01 34 41 01 35 40 MG2016 21 03 03 63.9 204.4 0.7 20.0 -14 1847 01 35 54 01 39 10 --- 21 06 34 63.6 206.2 0.8 21.5 196 1873 01 35 41 01 39 10 J2018+0831 21 06 34 60.7 204.6 0.8 19.9 -14 1873 01 39 24 01 40 40 --- 21 08 04 60.6 205.3 0.8 20.5 76 1882 01 39 11 01 40 40 MG2016 21 08 04 63.4 207.0 0.8 22.1 -14 1882 01 40 54 01 44 10 --- 21 11 34 63.1 208.8 0.9 23.5 196 1908 01 40 41 01 44 50 J2018+0831 21 12 15 60.2 207.2 0.9 22.1 26 1908 01 44 50 01 45 50 --- 21 13 15 60.1 207.7 0.9 22.4 60 1915 01 44 51 01 45 50 MG2016 21 13 15 62.9 209.6 0.9 24.1 -14 1915 01 46 04 01 49 20 --- 21 16 45 62.6 211.3 0.9 25.5 196 1941 01 45 51 01 49 20 J2018+0831 21 16 45 59.8 209.3 1.0 23.7 -14 1941 01 49 34 01 50 50 --- 21 18 16 59.7 210.0 1.0 24.2 76 1950 01 49 21 01 50 50 MG2016 21 18 16 62.4 212.0 1.0 26.0 -14 1950 01 51 04 01 54 20 --- 21 21 46 62.0 213.7 1.0 27.3 196 1976 01 50 51 01 55 00 J2018+0831 21 22 26 59.2 211.8 1.1 25.6 26 1976 01 55 00 01 56 00 --- 21 23 26 59.1 212.2 1.1 26.0 60 1983 01 55 01 01 56 00 MG2016 21 23 26 61.8 214.4 1.1 27.9 -13 1983 01 56 13 01 59 30 --- 21 26 57 61.4 216.0 1.1 29.1 197 2009 01 56 01 01 59 30 J2018+0831 21 26 57 58.7 213.7 1.1 27.1 -13 2009 01 59 43 02 01 00 --- 21 28 27 58.6 214.4 1.2 27.6 77 2019 01 59 31 Schedule for VLBA_LA (Code La ) Page 10 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 02 01 00 MG2016 21 28 27 61.3 216.7 1.1 29.7 -13 2019 02 01 13 02 04 30 --- 21 31 58 60.8 218.2 1.2 30.8 197 2044 02 01 01 02 05 10 J2018+0831 21 32 38 58.1 216.1 1.2 28.9 27 2044 02 05 10 02 06 10 --- 21 33 38 57.9 216.5 1.2 29.2 60 2052 02 05 11 02 06 10 MG2016 21 33 38 60.6 218.9 1.2 31.4 -13 2052 02 06 23 02 09 40 --- 21 37 09 60.2 220.4 1.3 32.5 197 2077 02 06 11 02 09 40 J2018+0831 21 37 09 57.5 217.9 1.3 30.3 -13 2077 02 09 53 02 11 10 --- 21 38 39 57.3 218.5 1.3 30.7 77 2087 02 09 41 02 11 10 MG2016 21 38 39 60.0 221.0 1.3 32.9 -13 2087 02 11 23 02 14 40 --- 21 42 09 59.5 222.5 1.4 34.0 197 2113 02 11 11 02 15 20 J2018+0831 21 42 50 56.8 220.1 1.4 31.9 27 2113 02 15 20 02 16 20 --- 21 43 50 56.7 220.5 1.4 32.2 60 2120 02 15 21 02 16 20 MG2016 21 43 50 59.3 223.1 1.4 34.5 -13 2120 02 16 33 02 19 50 --- 21 47 20 58.8 224.5 1.5 35.5 197 2146 02 16 21 02 19 50 J2018+0831 21 47 20 56.2 221.8 1.5 33.2 -13 2146 02 20 03 02 21 20 --- 21 48 51 56.0 222.4 1.5 33.6 77 2156 02 19 51 02 21 20 MG2016 21 48 51 58.5 225.1 1.5 35.9 -13 2156 02 21 33 02 24 50 --- 21 52 21 58.0 226.4 1.5 36.8 197 2181 02 21 21 02 25 30 J2018+0831 21 53 01 55.4 223.9 1.6 34.7 27 2181 02 25 30 02 26 30 --- 21 54 01 55.3 224.3 1.6 35.0 60 2189 02 25 31 02 26 30 MG2016 21 54 01 57.8 227.0 1.6 37.3 -13 2189 02 26 43 02 30 00 --- 21 57 32 57.3 228.3 1.6 38.2 197 2214 02 26 31 02 30 00 J2018+0831 21 57 32 54.8 225.5 1.6 35.8 -13 2214 02 30 13 02 31 30 --- 21 59 02 54.5 226.0 1.7 36.2 77 2224 02 30 01 02 31 30 MG2016 21 59 02 57.0 228.8 1.6 38.5 -13 2224 02 31 43 02 35 00 --- 22 02 33 56.5 230.0 1.7 39.4 197 2249 02 31 31 02 35 40 J2018+0831 22 03 13 53.9 227.5 1.7 37.2 27 2249 02 35 40 02 36 40 --- 22 04 13 53.8 227.8 1.8 37.4 60 2257 02 35 41 02 36 40 MG2016 22 04 13 56.2 230.6 1.7 39.8 -13 2257 02 36 53 02 40 10 --- 22 07 44 55.7 231.8 1.8 40.6 197 2282 02 36 41 Schedule for VLBA_LA (Code La ) Page 11 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 02 40 10 J2018+0831 22 07 44 53.2 228.9 1.8 38.2 -13 2282 02 40 23 02 41 40 --- 22 09 14 53.0 229.4 1.8 38.6 77 2292 02 40 11 02 41 40 MG2016 22 09 14 55.4 232.3 1.8 40.9 -13 2292 02 41 53 02 45 10 --- 22 12 44 54.9 233.4 1.9 41.7 197 2318 02 41 41 02 45 50 J2018+0831 22 13 25 52.4 230.7 1.9 39.4 27 2318 02 45 50 02 46 50 --- 22 14 25 52.2 231.1 1.9 39.7 60 2325 02 45 51 02 46 50 MG2016 22 14 25 54.6 233.9 1.9 42.0 -13 2325 02 47 03 02 50 20 --- 22 17 55 54.0 235.0 2.0 42.7 197 2351 02 46 51 02 50 20 J2018+0831 22 17 55 51.6 232.1 2.0 40.4 -13 2351 02 50 33 02 51 50 --- 22 19 26 51.4 232.6 2.0 40.7 77 2361 02 50 21 02 51 50 MG2016 22 19 26 53.8 235.5 2.0 43.0 -13 2361 02 52 03 02 55 20 --- 22 22 56 53.2 236.5 2.0 43.7 197 2386 02 51 51 02 56 00 J2018+0831 22 23 36 50.7 233.8 2.1 41.5 27 2386 02 56 00 02 57 00 --- 22 24 36 50.6 234.1 2.1 41.7 60 2394 02 56 01 02 57 00 MG2016 22 24 36 52.9 237.0 2.1 44.0 -13 2394 02 57 13 03 00 30 --- 22 28 07 52.3 238.0 2.1 44.6 197 2419 02 57 01 03 00 30 J2018+0831 22 28 07 50.0 235.1 2.1 42.3 -13 2419 03 00 43 03 02 00 --- 22 29 37 49.7 235.6 2.2 42.6 77 2429 03 00 31 03 02 00 MG2016 22 29 37 52.0 238.4 2.2 44.9 -13 2429 03 02 13 03 05 30 --- 22 33 08 51.4 239.4 2.2 45.5 197 2455 03 02 01 03 06 10 J2018+0831 22 33 48 49.0 236.7 2.2 43.3 27 2455 03 06 10 03 07 10 --- 22 34 48 48.9 237.0 2.3 43.5 60 2462 03 06 11 03 07 10 MG2016 22 34 48 51.1 239.9 2.2 45.7 -13 2462 03 07 23 03 10 40 --- 22 38 19 50.5 240.8 2.3 46.3 197 2488 03 07 11 03 10 40 J2018+0831 22 38 19 48.3 237.9 2.3 44.1 -13 2488 03 10 53 03 12 10 --- 22 39 49 48.0 238.3 2.3 44.3 77 2498 03 10 41 03 12 10 MG2016 22 39 49 50.2 241.2 2.3 46.5 -12 2498 03 12 22 03 15 40 --- 22 43 19 49.6 242.1 2.4 47.1 198 2523 03 12 11 03 16 20 J2018+0831 22 44 00 47.3 239.4 2.4 44.9 27 2523 03 16 20 03 17 20 --- 22 45 00 47.1 239.7 2.4 45.1 60 2531 03 16 21 Schedule for VLBA_LA (Code La ) Page 12 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 03 17 20 MG2016 22 45 00 49.3 242.6 2.4 47.3 -12 2531 03 17 32 03 20 50 --- 22 48 30 48.7 243.5 2.5 47.8 198 2556 03 17 21 03 20 50 J2018+0831 22 48 30 46.5 240.6 2.5 45.6 -12 2556 03 21 02 03 22 20 --- 22 50 01 46.2 241.0 2.5 45.8 78 2566 03 20 51 03 22 20 MG2016 22 50 01 48.4 243.8 2.5 48.0 -12 2566 03 22 32 03 25 50 --- 22 53 31 47.8 244.7 2.6 48.5 198 2592 03 22 21 03 26 30 J2018+0831 22 54 11 45.5 242.0 2.6 46.4 28 2592 03 26 30 03 27 30 --- 22 55 11 45.3 242.2 2.6 46.6 60 2600 03 26 31 03 27 30 MG2016 22 55 11 47.5 245.1 2.6 48.7 -12 2600 03 27 42 03 31 00 --- 22 58 42 46.8 245.9 2.6 49.1 198 2625 03 27 31 03 31 00 J2018+0831 22 58 42 44.7 243.1 2.7 47.0 -12 2625 03 31 12 03 32 30 --- 23 00 12 44.4 243.4 2.7 47.2 78 2635 03 31 01 03 32 30 MG2016 23 00 12 46.5 246.3 2.7 49.3 -12 2635 03 32 42 03 36 00 --- 23 03 43 45.9 247.1 2.7 49.7 198 2661 03 32 31 03 36 40 J2018+0831 23 04 23 43.6 244.4 2.8 47.7 28 2661 03 36 40 03 37 40 --- 23 05 23 43.4 244.6 2.8 47.8 60 2668 03 36 41 03 37 40 MG2016 23 05 23 45.6 247.5 2.8 49.9 -12 2668 03 37 52 03 41 10 --- 23 08 54 44.9 248.2 2.8 50.3 198 2694 03 37 41 03 41 10 J2018+0831 23 08 54 42.8 245.4 2.8 48.3 -12 2694 03 41 22 03 42 40 --- 23 10 24 42.5 245.7 2.9 48.4 78 2704 03 41 11 03 42 40 MG2016 23 10 24 44.6 248.6 2.8 50.4 -12 2704 03 42 52 03 46 10 --- 23 13 54 44.0 249.3 2.9 50.8 198 2729 03 42 41 03 46 50 J2018+0831 23 14 35 41.7 246.7 2.9 48.9 28 2729 03 46 50 03 47 50 --- 23 15 35 41.6 246.9 2.9 49.0 60 2737 03 46 51 03 47 50 MG2016 23 15 35 43.6 249.7 2.9 50.9 -12 2737 03 48 02 03 51 20 --- 23 19 05 43.0 250.4 3.0 51.3 198 2763 03 47 51 03 51 20 J2018+0831 23 19 05 40.9 247.6 3.0 49.4 -12 2763 03 51 32 03 52 50 --- 23 20 36 40.6 248.0 3.0 49.5 78 2773 03 51 21 03 52 50 MG2016 23 20 36 42.7 250.7 3.0 51.4 -12 2773 03 53 02 03 56 20 --- 23 24 06 42.0 251.5 3.1 51.7 198 2798 03 52 51 Schedule for VLBA_LA (Code La ) Page 13 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 03 57 00 J2018+0831 23 24 46 39.8 248.8 3.1 49.9 28 2798 03 57 00 03 58 00 --- 23 25 46 39.6 249.0 3.1 50.0 60 2806 03 57 01 03 58 00 MG2016 23 25 46 41.7 251.8 3.1 51.9 -12 2806 03 58 12 04 01 30 --- 23 29 17 41.0 252.5 3.2 52.2 198 2831 03 58 01 04 01 30 J2018+0831 23 29 17 39.0 249.8 3.2 50.3 -12 2831 04 01 42 04 03 00 --- 23 30 47 38.7 250.1 3.2 50.5 78 2841 04 01 31 04 03 00 MG2016 23 30 47 40.7 252.8 3.2 52.3 -12 2841 04 03 12 04 06 30 --- 23 34 18 40.0 253.5 3.2 52.6 198 2867 04 03 01 04 07 10 J2018+0831 23 34 58 37.9 250.9 3.3 50.8 28 2867 04 07 10 04 08 10 --- 23 35 58 37.7 251.1 3.3 50.9 60 2875 04 07 11 04 08 10 MG2016 23 35 58 39.7 253.8 3.3 52.7 -12 2875 04 08 22 04 11 40 --- 23 39 29 39.0 254.5 3.3 52.9 198 2900 04 08 11 04 11 40 J2018+0831 23 39 29 37.0 251.8 3.3 51.2 -12 2900 04 11 52 04 13 10 --- 23 40 59 36.7 252.1 3.4 51.3 78 2910 04 11 41 04 13 10 MG2016 23 40 59 38.7 254.8 3.3 53.0 -12 2910 04 13 22 04 16 40 --- 23 44 29 38.0 255.4 3.4 53.3 198 2936 04 13 11 04 17 20 J2018+0831 23 45 10 35.9 252.9 3.4 51.6 28 2936 04 17 20 04 18 20 --- 23 46 10 35.7 253.1 3.5 51.7 60 2944 04 17 21 04 18 20 MG2016 23 46 10 37.7 255.8 3.4 53.4 -12 2944 04 18 32 04 21 50 --- 23 49 40 37.0 256.4 3.5 53.6 198 2969 04 18 21 04 21 50 J2018+0831 23 49 40 35.0 253.7 3.5 52.0 -12 2969 04 22 02 04 23 20 --- 23 51 11 34.8 254.0 3.5 52.1 78 2979 04 21 51 04 23 20 MG2016 23 51 11 36.7 256.7 3.5 53.7 -12 2979 04 23 32 04 26 50 --- 23 54 41 36.0 257.3 3.6 53.9 198 3005 04 23 21 04 27 30 J2018+0831 23 55 21 33.9 254.8 3.6 52.3 28 3005 04 27 30 04 28 30 --- 23 56 21 33.7 254.9 3.6 52.4 60 3012 04 27 31 04 28 30 MG2016 23 56 21 35.7 257.6 3.6 54.0 -12 3012 04 28 42 04 32 00 --- 23 59 52 35.0 258.2 3.7 54.1 198 3038 04 28 31 04 32 00 J2018+0831 23 59 52 33.1 255.6 3.7 52.6 -12 3038 04 32 12 04 33 30 --- 00 01 22 32.8 255.8 3.7 52.7 78 3048 04 32 01 Schedule for VLBA_LA (Code La ) Page 14 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 04 33 30 MG2016 00 01 22 34.7 258.5 3.7 54.2 -12 3048 04 33 42 04 37 00 --- 00 04 53 34.0 259.1 3.7 54.4 198 3073 04 33 31 04 37 40 J2018+0831 00 05 33 31.9 256.6 3.8 53.0 28 3073 04 37 40 04 38 40 --- 00 06 33 31.7 256.8 3.8 53.0 60 3081 04 37 41 04 38 40 MG2016 00 06 33 33.7 259.4 3.8 54.5 -12 3081 04 38 52 04 42 10 --- 00 10 04 33.0 260.0 3.8 54.6 198 3107 04 38 41 04 42 10 J2018+0831 00 10 04 31.0 257.4 3.8 53.2 -12 3107 04 42 22 04 43 40 --- 00 11 34 30.7 257.6 3.9 53.3 78 3117 04 42 11 04 43 40 MG2016 00 11 34 32.7 260.2 3.9 54.7 -12 3117 04 43 52 04 47 10 --- 00 15 04 32.0 260.8 3.9 54.8 198 3142 04 43 41 04 47 50 J2018+0831 00 15 45 29.9 258.3 3.9 53.5 28 3142 04 47 50 04 48 50 --- 00 16 45 29.7 258.5 4.0 53.5 60 3150 04 47 51 04 48 50 MG2016 00 16 45 31.6 261.1 3.9 54.9 -12 3150 04 49 02 04 52 20 --- 00 20 15 30.9 261.7 4.0 55.0 198 3175 04 48 51 04 52 20 J2018+0831 00 20 15 29.0 259.1 4.0 53.7 -12 3175 04 52 32 04 53 50 --- 00 21 46 28.7 259.4 4.0 53.7 78 3185 04 52 21 04 53 50 MG2016 00 21 46 30.6 261.9 4.0 55.1 -12 3185 04 54 02 04 57 20 --- 00 25 16 29.9 262.5 4.1 55.2 198 3211 04 53 51 04 58 00 J2018+0831 00 25 56 27.9 260.0 4.1 53.9 28 3211 04 58 00 04 59 00 --- 00 26 56 27.7 260.2 4.1 54.0 60 3219 04 58 01 04 59 00 MG2016 00 26 56 29.6 262.7 4.1 55.2 -12 3219 04 59 12 05 02 30 --- 00 30 27 28.9 263.3 4.2 55.3 198 3244 04 59 01 05 02 30 J2018+0831 00 30 27 27.0 260.8 4.2 54.1 -12 3244 05 02 42 05 04 00 --- 00 31 57 26.7 261.0 4.2 54.1 78 3254 05 02 31 05 04 00 MG2016 00 31 57 28.6 263.5 4.2 55.4 -12 3254 05 04 12 05 07 30 --- 00 35 28 27.9 264.1 4.3 55.4 198 3280 05 04 01 05 08 10 J2018+0831 00 36 08 25.8 261.7 4.3 54.3 28 3280 05 08 10 05 09 10 --- 00 37 08 25.6 261.9 4.3 54.3 60 3287 05 08 11 05 09 10 MG2016 00 37 08 27.5 264.4 4.3 55.5 -12 3287 05 09 22 05 12 40 --- 00 40 39 26.8 264.9 4.3 55.6 198 3313 05 09 11 Schedule for VLBA_LA (Code La ) Page 15 Confirming the first detection of a merging dual SMBH system at high-z UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 30 Oct 2019 Day 303 --- 05 12 40 J2018+0831 00 40 39 24.9 262.4 4.4 54.4 -12 3313 05 12 52 05 14 10 --- 00 42 09 24.6 262.7 4.4 54.5 78 3323 05 12 41 05 14 10 MG2016 00 42 09 26.5 265.1 4.4 55.6 -12 3323 05 14 22 05 17 40 --- 00 45 39 25.8 265.7 4.4 55.7 198 3349 05 14 11 05 18 20 J2018+0831 00 46 20 23.8 263.3 4.5 54.6 28 3349 05 18 20 05 19 20 --- 00 47 20 23.6 263.5 4.5 54.6 60 3356 05 18 21 05 20 00 J2018+0831 00 48 00 23.5 263.6 4.5 54.6 34 3356 05 20 00 05 21 00 --- 00 49 00 23.3 263.7 4.5 54.7 60 3364 05 20 01 05 21 00 MG2016 00 49 00 25.1 266.2 4.5 55.7 -12 3364 05 21 12 05 24 30 --- 00 52 31 24.4 266.7 4.5 55.8 198 3389 05 21 01 05 24 30 J2018+0831 00 52 31 22.5 264.3 4.6 54.7 -12 3389 05 24 42 05 25 30 --- 00 53 31 22.3 264.4 4.6 54.8 48 3396 05 24 31 05 25 30 MG2016 00 53 31 24.2 266.9 4.6 55.8 -12 3396 05 25 42 05 29 00 --- 00 57 01 23.5 267.4 4.6 55.8 198 3421 05 25 31 05 29 00 J2018+0831 00 57 01 21.6 265.0 4.6 54.8 -12 3421 05 29 12 05 30 00 --- 00 58 02 21.4 265.1 4.6 54.8 48 3427 05 29 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess319.C1024glob Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: vc_d Setup group: 6 Station: VLBA_LA Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 4100.00 Net SB= U U U U U U U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = A C A C A C A C VLBA FE= 6cm omit 6cm omit VLBA Synth= 13.6 4.1 13.6 The following frequency sets based on these setups were used. See the crd files for VLBA legacy system setups and pcal detection details. Frequency Set: 16 Setup file default. Used with PCAL = off LO sum= 4860.25 4860.25 4892.25 4892.25 4924.25 4924.25 4956.25 4956.25 BBC fr= 760.25 760.25 792.25 792.25 824.25 824.25 856.25 856.25 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 VLBA legacy crd files using 4 channels based on RDBE channels: 3 4 5 6 CRD fr= 800.25 800.25 832.25 832.25 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 16 17 18 19 20 21 22 23 24 26 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * MG2016 20 16 55.378166 * 20 19 18.092000 20 20 13.506927 0.00 11 17 44.97966 * 11 27 13.00000 11 31 07.98419 0.00 From catalog imbedded in main SCHED input file. * 3C345 16 41 17.606162 * 16 42 58.809900 16 43 36.712857 0.00 39 54 10.81394 * 39 48 36.99300 39 46 42.12824 0.00 From catalog imbedded in main SCHED input file. * J2018+0831 20 15 45.733430 * 20 18 11.311946 20 19 07.828310 0.00 08 22 30.62230 * 08 31 54.54739 08 35 47.07174 0.00 From catalog imbedded in main SCHED input file. SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline MG2016 sess319.C1024glob 1 2 3 4 5 6 7 8 9 10 11 15 + 12.075 581.686 3C345 sess319.C1024glob 1 2 3 4 5 6 7 8 9 10 11 15 + 0.392 14.779 J2018+0831 sess319.C1024glob 1 2 3 4 5 6 7 8 9 10 11 15 + 4.458 200.004 EFFECT OF SOLAR CORONA The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) MG2016 93.9 3C345 63.5 J2018+0831 92.9 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg