COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 17 10 26 36.9 114.9 -3.1 -43.2 0 0 20 45 10 20 46 10 --- 17 11 27 37.1 115.1 -3.1 -43.1 60 8 20 45 11 20 46 10 MG2016 17 11 27 39.0 112.3 -3.1 -44.8 -12 8 20 46 22 20 49 40 --- 17 14 57 39.6 113.1 -3.1 -44.4 198 33 20 46 11 20 49 40 J2018+0831 17 14 57 37.7 115.9 -3.1 -42.7 -12 33 20 49 52 20 51 10 --- 17 16 27 37.9 116.3 -3.0 -42.6 78 43 20 49 41 20 51 10 MG2016 17 16 27 39.9 113.4 -3.1 -44.3 -12 43 20 51 22 20 54 40 --- 17 19 58 40.5 114.2 -3.0 -44.0 198 69 20 51 11 20 55 20 J2018+0831 17 20 38 38.6 117.2 -3.0 -42.1 28 69 20 55 20 20 56 20 --- 17 21 38 38.8 117.5 -3.0 -42.0 60 77 20 55 21 20 56 20 MG2016 17 21 38 40.8 114.6 -3.0 -43.8 -12 77 20 56 32 20 59 50 --- 17 25 09 41.4 115.4 -2.9 -43.4 198 102 20 56 21 20 59 50 J2018+0831 17 25 09 39.4 118.3 -2.9 -41.6 -12 102 21 00 02 21 01 20 --- 17 26 39 39.6 118.7 -2.9 -41.4 78 112 20 59 51 21 01 40 J2018+0831 17 26 59 39.7 118.7 -2.9 -41.4 14 112 Stopped 21 07 40 --- 17 33 00 40.7 120.2 -2.8 -40.7 360 112 21 09 10 3C345 17 34 30 80.2 262.5 0.8 74.2 -21 112 21 09 31 21 14 10 --- 17 39 31 79.2 264.0 0.9 74.8 279 148 21 09 11 21 18 40 J2018+0831 17 44 02 42.4 123.0 -2.6 -39.2 159 148 21 18 40 21 19 40 --- 17 45 02 42.6 123.3 -2.6 -39.1 60 156 21 18 41 21 19 40 MG2016 17 45 02 44.6 120.4 -2.6 -41.0 -12 156 21 19 52 21 23 10 --- 17 48 33 45.2 121.3 -2.5 -40.6 198 181 21 19 41 21 23 10 J2018+0831 17 48 33 43.1 124.2 -2.5 -38.6 -12 181 21 23 22 21 24 40 --- 17 50 03 43.3 124.6 -2.5 -38.4 78 191 21 23 11 21 24 40 MG2016 17 50 03 45.4 121.7 -2.5 -40.4 -12 191 21 24 52 21 28 10 --- 17 53 34 46.0 122.6 -2.4 -39.9 198 217 21 24 41 21 28 50 J2018+0831 17 54 14 44.0 125.7 -2.4 -37.8 28 217 21 28 50 21 29 50 --- 17 55 14 44.1 126.0 -2.4 -37.6 60 225 21 28 51 Schedule for VLBA_NL (Code Nl ) 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 17 55 14 46.3 123.1 -2.4 -39.6 -12 225 21 30 02 21 33 20 --- 17 58 44 46.8 124.1 -2.4 -39.1 198 250 21 29 51 21 33 20 J2018+0831 17 58 44 44.7 126.9 -2.3 -37.1 -12 250 21 33 32 21 34 50 --- 18 00 15 44.9 127.4 -2.3 -36.8 78 260 21 33 21 21 34 50 MG2016 18 00 15 47.0 124.5 -2.3 -38.9 -12 260 21 35 02 21 38 20 --- 18 03 45 47.6 125.5 -2.3 -38.3 198 286 21 34 51 21 39 00 J2018+0831 18 04 25 45.5 128.5 -2.2 -36.2 28 286 21 39 00 21 40 00 --- 18 05 25 45.6 128.8 -2.2 -36.0 60 293 21 39 01 21 40 00 MG2016 18 05 25 47.8 125.9 -2.2 -38.0 -12 293 21 40 12 21 43 30 --- 18 08 56 48.3 127.0 -2.2 -37.5 198 319 21 40 01 21 43 30 J2018+0831 18 08 56 46.2 129.8 -2.2 -35.4 -12 319 21 43 42 21 45 00 --- 18 10 26 46.4 130.3 -2.1 -35.1 78 329 21 43 31 21 45 00 MG2016 18 10 26 48.6 127.4 -2.2 -37.2 -13 329 21 45 13 21 48 30 --- 18 13 57 49.1 128.4 -2.1 -36.6 197 354 21 45 01 21 49 10 J2018+0831 18 14 37 47.0 131.5 -2.1 -34.4 27 354 21 49 10 21 50 10 --- 18 15 37 47.1 131.8 -2.1 -34.2 60 362 21 49 11 21 50 10 MG2016 18 15 37 49.3 128.9 -2.1 -36.3 -13 362 21 50 23 21 53 40 --- 18 19 08 49.8 130.0 -2.0 -35.7 197 387 21 50 11 21 53 40 J2018+0831 18 19 08 47.6 132.9 -2.0 -33.6 -13 387 21 53 53 21 55 10 --- 18 20 38 47.8 133.3 -2.0 -33.3 77 397 21 53 41 21 55 10 MG2016 18 20 38 50.0 130.5 -2.0 -35.4 -13 397 21 55 23 21 58 40 --- 18 24 09 50.5 131.6 -1.9 -34.7 197 423 21 55 11 21 59 20 J2018+0831 18 24 49 48.3 134.6 -1.9 -32.5 27 423 21 59 20 22 00 20 --- 18 25 49 48.5 134.9 -1.9 -32.3 60 430 21 59 21 22 00 20 MG2016 18 25 49 50.8 132.1 -1.9 -34.4 -13 430 22 00 33 22 03 50 --- 18 29 19 51.3 133.3 -1.8 -33.7 197 456 22 00 21 22 03 50 J2018+0831 18 29 19 48.9 136.1 -1.8 -31.6 -13 456 22 04 03 22 05 20 --- 18 30 50 49.1 136.5 -1.8 -31.3 77 466 22 03 51 22 05 20 MG2016 18 30 50 51.5 133.7 -1.8 -33.4 -13 466 22 05 33 22 08 50 --- 18 34 20 51.9 134.9 -1.8 -32.6 197 491 22 05 21 Schedule for VLBA_NL (Code Nl ) 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 18 35 00 49.7 137.9 -1.7 -30.4 27 491 22 09 30 22 10 30 --- 18 36 00 49.8 138.2 -1.7 -30.2 60 499 22 09 31 22 10 30 MG2016 18 36 00 52.1 135.5 -1.7 -32.3 -13 499 22 10 43 22 14 00 --- 18 39 31 52.6 136.7 -1.7 -31.5 197 524 22 10 31 22 14 00 J2018+0831 18 39 31 50.2 139.4 -1.7 -29.4 -13 524 22 14 13 22 15 30 --- 18 41 01 50.4 139.9 -1.6 -29.1 77 534 22 14 01 22 15 30 MG2016 18 41 01 52.8 137.2 -1.7 -31.2 -13 534 22 15 43 22 19 00 --- 18 44 32 53.2 138.4 -1.6 -30.3 197 559 22 15 31 22 19 40 J2018+0831 18 45 12 50.9 141.3 -1.6 -28.1 27 559 22 19 40 22 20 40 --- 18 46 12 51.0 141.7 -1.5 -27.9 60 567 22 19 41 22 20 40 MG2016 18 46 12 53.4 139.0 -1.6 -30.0 -13 567 22 20 53 22 24 10 --- 18 49 43 53.9 140.3 -1.5 -29.1 197 593 22 20 41 22 24 10 J2018+0831 18 49 43 51.4 142.9 -1.5 -27.0 -13 593 22 24 23 22 25 40 --- 18 51 13 51.6 143.5 -1.5 -26.7 77 602 22 24 11 22 25 40 MG2016 18 51 13 54.0 140.8 -1.5 -28.7 -13 602 22 25 53 22 29 10 --- 18 54 44 54.4 142.1 -1.4 -27.9 197 628 22 25 41 22 29 50 J2018+0831 18 55 24 52.0 145.0 -1.4 -25.7 27 628 22 29 50 22 30 50 --- 18 56 24 52.1 145.3 -1.4 -25.4 60 636 22 29 51 22 30 50 MG2016 18 56 24 54.6 142.7 -1.4 -27.4 -13 636 22 31 03 22 34 20 --- 18 59 54 55.0 144.1 -1.3 -26.5 197 661 22 30 51 22 34 20 J2018+0831 18 59 54 52.5 146.6 -1.3 -24.5 -13 661 22 34 33 22 35 50 --- 19 01 25 52.7 147.2 -1.3 -24.1 77 671 22 34 21 22 35 50 MG2016 19 01 25 55.2 144.6 -1.3 -26.1 -13 671 22 36 03 22 39 20 --- 19 04 55 55.6 146.0 -1.3 -25.2 197 696 22 35 51 22 40 00 J2018+0831 19 05 35 53.1 148.7 -1.2 -23.0 27 696 22 40 00 22 41 00 --- 19 06 35 53.2 149.1 -1.2 -22.8 60 704 22 40 01 22 41 00 MG2016 19 06 35 55.7 146.7 -1.2 -24.7 -13 704 22 41 13 22 44 30 --- 19 10 06 56.1 148.1 -1.2 -23.7 197 729 22 41 01 22 44 30 J2018+0831 19 10 06 53.5 150.5 -1.2 -21.8 -13 729 22 44 43 22 46 00 --- 19 11 36 53.6 151.0 -1.1 -21.4 77 739 22 44 31 Schedule for VLBA_NL (Code Nl ) 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 19 11 36 56.2 148.7 -1.1 -23.3 -13 739 22 46 13 22 49 30 --- 19 15 07 56.6 150.1 -1.1 -22.3 197 765 22 46 01 22 50 10 J2018+0831 19 15 47 54.0 152.7 -1.1 -20.3 27 765 22 50 10 22 51 10 --- 19 16 47 54.1 153.1 -1.0 -20.0 60 772 22 50 11 22 51 10 MG2016 19 16 47 56.7 150.8 -1.1 -21.8 -13 772 22 51 23 22 54 40 --- 19 20 18 57.0 152.3 -1.0 -20.8 197 798 22 51 11 22 54 40 J2018+0831 19 20 18 54.4 154.5 -1.0 -19.0 -13 798 22 54 53 22 56 10 --- 19 21 48 54.5 155.1 -1.0 -18.5 77 808 22 54 41 22 56 10 MG2016 19 21 48 57.2 152.9 -1.0 -20.3 -14 808 22 56 24 22 59 40 --- 19 25 19 57.5 154.4 -0.9 -19.2 196 833 22 56 11 23 00 20 J2018+0831 19 25 59 54.8 156.8 -0.9 -17.3 26 833 23 00 20 23 01 20 --- 19 26 59 54.9 157.2 -0.9 -17.0 60 841 23 00 21 23 01 20 MG2016 19 26 59 57.6 155.1 -0.9 -18.7 -14 841 23 01 34 23 04 50 --- 19 30 29 57.9 156.6 -0.8 -17.6 196 866 23 01 21 23 04 50 J2018+0831 19 30 29 55.1 158.6 -0.8 -15.9 -14 866 23 05 04 23 06 20 --- 19 32 00 55.2 159.3 -0.8 -15.5 76 876 23 04 51 23 06 20 MG2016 19 32 00 58.0 157.3 -0.8 -17.1 -14 876 23 06 34 23 09 50 --- 19 35 30 58.2 158.9 -0.7 -15.9 196 901 23 06 21 23 10 30 J2018+0831 19 36 10 55.5 161.0 -0.7 -14.2 26 901 23 10 30 23 11 30 --- 19 37 10 55.6 161.4 -0.7 -13.9 60 909 23 10 31 23 11 30 MG2016 19 37 10 58.3 159.6 -0.7 -15.4 -14 909 23 11 44 23 15 00 --- 19 40 41 58.5 161.2 -0.7 -14.2 196 934 23 11 31 23 15 00 J2018+0831 19 40 41 55.8 162.9 -0.6 -12.8 -14 934 23 15 14 23 16 30 --- 19 42 11 55.8 163.6 -0.6 -12.3 76 944 23 15 01 23 16 30 MG2016 19 42 11 58.6 161.9 -0.6 -13.7 -14 944 23 16 44 23 20 00 --- 19 45 42 58.8 163.5 -0.6 -12.5 196 969 23 16 31 23 20 40 J2018+0831 19 46 22 56.0 165.4 -0.5 -11.0 26 969 23 20 40 23 21 40 --- 19 47 22 56.1 165.8 -0.5 -10.6 60 977 23 20 41 23 21 40 MG2016 19 47 22 58.9 164.3 -0.5 -11.9 -14 977 23 21 54 23 25 10 --- 19 50 53 59.1 165.9 -0.5 -10.7 196 1002 23 21 41 Schedule for VLBA_NL (Code Nl ) 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 19 50 53 56.2 167.4 -0.5 -9.5 -14 1002 23 25 24 23 26 40 --- 19 52 23 56.3 168.0 -0.4 -9.0 76 1012 23 25 11 23 26 40 MG2016 19 52 23 59.1 166.6 -0.5 -10.1 -14 1012 23 26 54 23 30 10 --- 19 55 54 59.3 168.3 -0.4 -8.9 196 1037 23 26 41 23 30 50 J2018+0831 19 56 34 56.5 169.9 -0.4 -7.6 26 1037 23 30 50 23 31 50 --- 19 57 34 56.5 170.3 -0.4 -7.3 60 1045 23 30 51 23 31 50 MG2016 19 57 34 59.3 169.1 -0.4 -8.3 -14 1045 23 32 04 23 35 20 --- 20 01 04 59.5 170.7 -0.3 -7.0 196 1070 23 31 51 23 35 20 J2018+0831 20 01 04 56.6 171.9 -0.3 -6.1 -14 1070 23 35 34 23 36 50 --- 20 02 35 56.6 172.5 -0.3 -5.6 76 1080 23 35 21 23 36 50 MG2016 20 02 35 59.5 171.5 -0.3 -6.5 -14 1080 23 37 04 23 40 20 --- 20 06 05 59.6 173.1 -0.2 -5.2 196 1105 23 36 51 23 41 00 J2018+0831 20 06 45 56.7 174.4 -0.2 -4.2 26 1105 23 41 00 23 42 00 --- 20 07 45 56.7 174.9 -0.2 -3.9 60 1113 23 41 01 23 42 00 MG2016 20 07 45 59.6 174.0 -0.2 -4.6 -14 1113 23 42 14 23 45 30 --- 20 11 16 59.7 175.6 -0.1 -3.3 196 1138 23 42 01 23 45 30 J2018+0831 20 11 16 56.8 176.5 -0.1 -2.7 -14 1138 23 45 44 23 47 00 --- 20 12 46 56.8 177.1 -0.1 -2.2 76 1148 23 45 31 23 47 00 MG2016 20 12 46 59.7 176.4 -0.1 -2.8 -14 1148 23 47 14 23 50 30 --- 20 16 17 59.7 178.1 -0.1 -1.5 196 1173 23 47 01 23 51 10 J2018+0831 20 16 57 56.8 179.0 -0.0 -0.7 26 1173 23 51 10 23 52 10 --- 20 17 57 56.8 179.5 -0.0 -0.4 60 1181 23 51 11 23 52 10 MG2016 20 17 57 59.7 178.9 -0.0 -0.8 -14 1181 23 52 24 23 55 40 --- 20 21 28 59.7 180.6 0.0 0.5 196 1206 23 52 11 23 55 40 J2018+0831 20 21 28 56.8 181.1 0.0 0.8 -14 1206 23 55 54 23 57 10 --- 20 22 58 56.8 181.7 0.1 1.3 76 1216 23 55 41 --- Start: Tue 29 Oct 2019 Day 302 -- Stop: Wed 30 Oct 2019 Day 303 --- 23 57 10 MG2016 20 22 58 59.7 181.3 0.0 1.0 -14 1216 23 57 24 00 00 40 --- 20 26 29 59.7 183.0 0.1 2.3 196 1241 23 57 11 Schedule for VLBA_NL (Code Nl ) 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 20 27 09 56.8 183.6 0.1 2.7 26 1241 00 01 20 00 02 20 --- 20 28 09 56.8 184.1 0.2 3.1 60 1249 00 01 21 00 02 20 MG2016 20 28 09 59.7 183.8 0.1 2.9 -14 1249 00 02 34 00 05 50 --- 20 31 39 59.6 185.5 0.2 4.2 196 1274 00 02 21 00 05 50 J2018+0831 20 31 39 56.7 185.6 0.2 4.3 -14 1274 00 06 04 00 07 20 --- 20 33 10 56.7 186.3 0.2 4.8 76 1284 00 05 51 00 07 20 MG2016 20 33 10 59.6 186.3 0.2 4.8 -14 1284 00 07 34 00 10 50 --- 20 36 40 59.5 188.0 0.3 6.1 196 1309 00 07 21 00 11 30 J2018+0831 20 37 20 56.6 188.2 0.3 6.2 26 1309 00 11 30 00 12 30 --- 20 38 21 56.6 188.6 0.3 6.5 60 1317 00 11 31 00 12 30 MG2016 20 38 21 59.5 188.8 0.3 6.7 -14 1317 00 12 44 00 16 00 --- 20 41 51 59.4 190.4 0.4 7.9 196 1342 00 12 31 00 16 00 J2018+0831 20 41 51 56.4 190.2 0.4 7.7 -14 1342 00 16 14 00 17 30 --- 20 43 21 56.4 190.9 0.4 8.2 76 1352 00 16 01 00 17 30 MG2016 20 43 21 59.3 191.2 0.4 8.5 -14 1352 00 17 44 00 21 00 --- 20 46 52 59.2 192.8 0.4 9.7 196 1377 00 17 31 00 21 40 J2018+0831 20 47 32 56.2 192.7 0.5 9.5 26 1377 00 21 40 00 22 40 --- 20 48 32 56.2 193.1 0.5 9.9 60 1385 00 21 41 00 22 40 MG2016 20 48 32 59.1 193.6 0.5 10.3 -14 1385 00 22 54 00 26 10 --- 20 52 03 59.0 195.2 0.5 11.5 196 1410 00 22 41 00 26 10 J2018+0831 20 52 03 56.0 194.7 0.5 11.0 -14 1410 00 26 24 00 27 40 --- 20 53 33 56.0 195.3 0.6 11.5 76 1420 00 26 11 00 27 40 MG2016 20 53 33 58.9 195.9 0.6 12.1 -14 1420 00 27 54 00 31 10 --- 20 57 04 58.7 197.6 0.6 13.3 196 1445 00 27 41 00 31 50 J2018+0831 20 57 44 55.7 197.1 0.6 12.8 26 1445 00 31 50 00 32 50 --- 20 58 44 55.7 197.6 0.7 13.1 60 1453 00 31 51 00 32 50 MG2016 20 58 44 58.6 198.3 0.6 13.8 -14 1453 00 33 04 00 36 20 --- 21 02 14 58.4 199.9 0.7 15.0 196 1478 00 32 51 00 36 20 J2018+0831 21 02 14 55.5 199.0 0.7 14.2 -14 1478 00 36 34 00 37 50 --- 21 03 45 55.4 199.7 0.7 14.7 76 1488 00 36 21 Schedule for VLBA_NL (Code Nl ) 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 21 03 45 58.3 200.6 0.7 15.5 -14 1488 00 38 04 00 41 20 --- 21 07 15 58.0 202.2 0.8 16.7 196 1513 00 37 51 00 42 00 J2018+0831 21 07 55 55.1 201.4 0.8 16.0 26 1513 00 42 00 00 43 00 --- 21 08 56 55.1 201.8 0.8 16.3 60 1521 00 42 01 00 44 30 3C345 21 10 26 40.8 291.3 4.4 64.7 17 1521 00 44 30 00 49 30 --- 21 15 27 39.9 291.8 4.5 64.3 300 1559 00 44 31 00 54 00 J2018+0831 21 19 57 54.2 206.3 1.0 19.5 199 1559 00 54 00 00 55 00 --- 21 20 57 54.1 206.7 1.0 19.8 60 1567 00 54 01 00 55 00 MG2016 21 20 57 57.0 208.1 1.0 21.0 -14 1567 00 55 14 00 58 30 --- 21 24 28 56.6 209.5 1.1 22.0 196 1592 00 55 01 00 58 30 J2018+0831 21 24 28 53.8 208.1 1.1 20.8 -14 1592 00 58 44 01 00 00 --- 21 25 58 53.7 208.7 1.1 21.2 76 1602 00 58 31 01 00 00 MG2016 21 25 58 56.5 210.2 1.1 22.5 -14 1602 01 00 14 01 03 30 --- 21 29 29 56.2 211.6 1.2 23.5 196 1628 01 00 01 01 04 10 J2018+0831 21 30 09 53.3 210.3 1.2 22.4 26 1628 01 04 10 01 05 10 --- 21 31 09 53.2 210.7 1.2 22.6 60 1635 01 04 11 01 05 10 MG2016 21 31 09 56.0 212.3 1.2 24.0 -14 1635 01 05 24 01 08 40 --- 21 34 40 55.6 213.7 1.2 24.9 196 1660 01 05 11 01 08 40 J2018+0831 21 34 40 52.9 212.0 1.3 23.6 -14 1660 01 08 54 01 10 10 --- 21 36 10 52.7 212.6 1.3 24.0 76 1670 01 08 41 01 10 10 MG2016 21 36 10 55.5 214.2 1.3 25.4 -14 1670 01 10 24 01 13 40 --- 21 39 41 55.1 215.6 1.3 26.3 196 1696 01 10 11 01 14 20 J2018+0831 21 40 21 52.3 214.1 1.4 25.0 26 1696 01 14 20 01 15 20 --- 21 41 21 52.2 214.5 1.4 25.3 60 1703 01 14 21 01 15 20 MG2016 21 41 21 54.9 216.2 1.4 26.7 -14 1703 01 15 34 01 18 50 --- 21 44 51 54.5 217.6 1.4 27.6 196 1728 01 15 21 01 18 50 J2018+0831 21 44 51 51.8 215.8 1.4 26.2 -14 1728 01 19 04 01 20 20 --- 21 46 22 51.6 216.3 1.5 26.5 76 1738 01 18 51 01 20 20 MG2016 21 46 22 54.4 218.1 1.4 28.0 -14 1738 01 20 34 01 23 50 --- 21 49 52 54.0 219.4 1.5 28.9 196 1764 01 20 21 Schedule for VLBA_NL (Code Nl ) 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 21 50 32 51.2 217.8 1.5 27.5 26 1764 01 24 30 01 25 30 --- 21 51 33 51.1 218.1 1.5 27.8 60 1771 01 24 31 01 25 30 MG2016 21 51 33 53.8 220.0 1.5 29.3 -14 1771 01 25 44 01 29 00 --- 21 55 03 53.3 221.3 1.6 30.1 196 1797 01 25 31 01 29 00 J2018+0831 21 55 03 50.7 219.3 1.6 28.6 -14 1797 01 29 14 01 30 30 --- 21 56 33 50.5 219.8 1.6 28.9 76 1806 01 29 01 01 30 30 MG2016 21 56 33 53.1 221.8 1.6 30.5 -13 1806 01 30 43 01 34 00 --- 22 00 04 52.7 223.0 1.7 31.3 197 1832 01 30 31 01 34 40 J2018+0831 22 00 44 50.0 221.3 1.7 29.8 27 1832 01 34 40 01 35 40 --- 22 01 44 49.8 221.6 1.7 30.0 60 1839 01 34 41 01 35 40 MG2016 22 01 44 52.5 223.6 1.7 31.7 -13 1839 01 35 53 01 39 10 --- 22 05 15 52.0 224.8 1.8 32.4 197 1865 01 35 41 01 39 10 J2018+0831 22 05 15 49.4 222.7 1.8 30.8 -13 1865 01 39 23 01 40 40 --- 22 06 45 49.2 223.2 1.8 31.1 77 1875 01 39 11 01 40 40 MG2016 22 06 45 51.8 225.3 1.8 32.8 -13 1875 01 40 53 01 44 10 --- 22 10 16 51.4 226.5 1.8 33.5 197 1900 01 40 41 01 44 50 J2018+0831 22 10 56 48.7 224.6 1.9 32.0 27 1900 01 44 50 01 45 50 --- 22 11 56 48.5 224.9 1.9 32.2 60 1908 01 44 51 01 45 50 MG2016 22 11 56 51.1 227.0 1.9 33.8 -13 1908 01 46 03 01 49 20 --- 22 15 26 50.7 228.1 1.9 34.5 197 1933 01 45 51 01 49 20 J2018+0831 22 15 26 48.1 226.0 1.9 32.9 -13 1933 01 49 33 01 50 50 --- 22 16 57 47.9 226.5 2.0 33.1 77 1943 01 49 21 01 50 50 MG2016 22 16 57 50.5 228.6 1.9 34.8 -13 1943 01 51 03 01 54 20 --- 22 20 27 50.0 229.7 2.0 35.5 197 1968 01 50 51 01 55 00 J2018+0831 22 21 07 47.3 227.7 2.0 33.9 27 1968 01 55 00 01 56 00 --- 22 22 08 47.2 228.0 2.0 34.1 60 1976 01 55 01 01 56 00 MG2016 22 22 08 49.7 230.2 2.0 35.8 -13 1976 01 56 13 01 59 30 --- 22 25 38 49.2 231.3 2.1 36.4 197 2002 01 56 01 01 59 30 J2018+0831 22 25 38 46.7 229.1 2.1 34.7 -13 2002 01 59 43 02 01 00 --- 22 27 08 46.5 229.5 2.1 35.0 77 2012 01 59 31 Schedule for VLBA_NL (Code Nl ) 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 22 27 08 49.0 231.7 2.1 36.7 -13 2012 02 01 13 02 04 30 --- 22 30 39 48.5 232.8 2.2 37.3 197 2037 02 01 01 02 05 10 J2018+0831 22 31 19 45.9 230.7 2.2 35.7 27 2037 02 05 10 02 06 10 --- 22 32 19 45.7 231.0 2.2 35.9 60 2045 02 05 11 02 06 10 MG2016 22 32 19 48.2 233.3 2.2 37.6 -13 2045 02 06 23 02 09 40 --- 22 35 50 47.7 234.3 2.3 38.2 197 2070 02 06 11 02 09 40 J2018+0831 22 35 50 45.2 232.0 2.3 36.5 -13 2070 02 09 53 02 11 10 --- 22 37 20 45.0 232.5 2.3 36.7 77 2080 02 09 41 02 11 10 MG2016 22 37 20 47.5 234.7 2.3 38.4 -13 2080 02 11 23 02 14 40 --- 22 40 51 46.9 235.7 2.3 39.0 197 2105 02 11 11 02 15 20 J2018+0831 22 41 31 44.4 233.6 2.4 37.4 27 2105 02 15 20 02 16 20 --- 22 42 31 44.2 233.9 2.4 37.5 60 2113 02 15 21 02 16 20 MG2016 22 42 31 46.7 236.2 2.4 39.2 -13 2113 02 16 33 02 19 50 --- 22 46 01 46.1 237.1 2.4 39.7 197 2138 02 16 21 02 19 50 J2018+0831 22 46 01 43.7 234.8 2.4 38.1 -13 2138 02 20 03 02 21 20 --- 22 47 32 43.5 235.2 2.5 38.3 77 2148 02 19 51 02 21 20 MG2016 22 47 32 45.9 237.5 2.5 40.0 -13 2148 02 21 33 02 24 50 --- 22 51 02 45.3 238.5 2.5 40.5 197 2174 02 21 21 02 25 30 J2018+0831 22 51 42 42.8 236.3 2.5 38.9 27 2174 02 25 30 02 26 30 --- 22 52 43 42.7 236.6 2.6 39.0 60 2181 02 25 31 02 26 30 MG2016 22 52 43 45.1 238.9 2.5 40.7 -13 2181 02 26 43 02 30 00 --- 22 56 13 44.5 239.8 2.6 41.2 197 2207 02 26 31 02 30 00 J2018+0831 22 56 13 42.1 237.5 2.6 39.5 -13 2207 02 30 13 02 31 30 --- 22 57 43 41.9 237.9 2.6 39.7 77 2217 02 30 01 02 31 30 MG2016 22 57 43 44.3 240.2 2.6 41.3 -13 2217 02 31 43 02 35 00 --- 23 01 14 43.7 241.1 2.7 41.8 197 2242 02 31 31 02 35 40 J2018+0831 23 01 54 41.2 239.0 2.7 40.3 27 2242 02 35 40 02 36 40 --- 23 02 54 41.0 239.2 2.7 40.4 60 2250 02 35 41 02 36 40 MG2016 23 02 54 43.4 241.5 2.7 42.0 -13 2250 02 36 53 02 40 10 --- 23 06 25 42.8 242.4 2.8 42.4 197 2275 02 36 41 Schedule for VLBA_NL (Code Nl ) 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 23 06 25 40.5 240.1 2.8 40.8 -13 2275 02 40 23 02 41 40 --- 23 07 55 40.2 240.5 2.8 41.0 77 2285 02 40 11 02 41 40 MG2016 23 07 55 42.6 242.8 2.8 42.6 -13 2285 02 41 53 02 45 10 --- 23 11 26 42.0 243.6 2.9 43.0 197 2311 02 41 41 02 45 50 J2018+0831 23 12 06 39.6 241.5 2.9 41.5 27 2311 02 45 50 02 46 50 --- 23 13 06 39.4 241.7 2.9 41.6 60 2318 02 45 51 02 46 50 MG2016 23 13 06 41.7 244.0 2.9 43.2 -13 2318 02 47 03 02 50 20 --- 23 16 36 41.1 244.9 2.9 43.6 197 2344 02 46 51 02 50 20 J2018+0831 23 16 36 38.8 242.5 3.0 42.0 -13 2344 02 50 33 02 51 50 --- 23 18 07 38.6 242.9 3.0 42.2 77 2354 02 50 21 02 51 50 MG2016 23 18 07 40.9 245.2 3.0 43.7 -13 2354 02 52 03 02 55 20 --- 23 21 37 40.3 246.0 3.0 44.1 197 2379 02 51 51 02 56 00 J2018+0831 23 22 17 37.9 243.9 3.1 42.6 27 2379 02 56 00 02 57 00 --- 23 23 18 37.7 244.1 3.1 42.7 60 2387 02 56 01 02 57 00 MG2016 23 23 18 40.0 246.4 3.1 44.2 -13 2387 02 57 13 03 00 30 --- 23 26 48 39.4 247.2 3.1 44.6 197 2412 02 57 01 03 00 30 J2018+0831 23 26 48 37.1 244.9 3.1 43.1 -13 2412 03 00 43 03 02 00 --- 23 28 18 36.9 245.2 3.2 43.2 77 2422 03 00 31 03 02 00 MG2016 23 28 18 39.1 247.6 3.1 44.7 -13 2422 03 02 13 03 05 30 --- 23 31 49 38.5 248.3 3.2 45.0 197 2447 03 02 01 03 06 10 J2018+0831 23 32 29 36.1 246.2 3.2 43.6 27 2447 03 06 10 03 07 10 --- 23 33 29 36.0 246.4 3.2 43.7 60 2455 03 06 11 03 07 10 MG2016 23 33 29 38.2 248.7 3.2 45.2 -13 2455 03 07 23 03 10 40 --- 23 37 00 37.6 249.5 3.3 45.5 197 2480 03 07 11 03 10 40 J2018+0831 23 37 00 35.4 247.2 3.3 44.0 -13 2480 03 10 53 03 12 10 --- 23 38 30 35.1 247.5 3.3 44.2 77 2490 03 10 41 03 12 10 MG2016 23 38 30 37.4 249.8 3.3 45.6 -13 2490 03 12 23 03 15 40 --- 23 42 01 36.8 250.6 3.4 45.9 197 2516 03 12 11 03 16 20 J2018+0831 23 42 41 34.4 248.4 3.4 44.5 27 2516 03 16 20 03 17 20 --- 23 43 41 34.2 248.6 3.4 44.6 60 2523 03 16 21 Schedule for VLBA_NL (Code Nl ) 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 23 43 41 36.5 250.9 3.4 46.0 -13 2523 03 17 33 03 20 50 --- 23 47 11 35.8 251.6 3.4 46.3 197 2549 03 17 21 03 20 50 J2018+0831 23 47 11 33.6 249.3 3.5 44.9 -13 2549 03 21 03 03 22 20 --- 23 48 42 33.3 249.7 3.5 45.0 77 2559 03 20 51 03 22 20 MG2016 23 48 42 35.6 252.0 3.5 46.4 -13 2559 03 22 33 03 25 50 --- 23 52 12 35.0 252.7 3.5 46.6 197 2584 03 22 21 03 26 30 J2018+0831 23 52 52 32.6 250.5 3.6 45.3 27 2584 03 26 30 03 27 30 --- 23 53 53 32.4 250.7 3.6 45.4 60 2592 03 26 31 03 27 30 MG2016 23 53 53 34.7 253.0 3.6 46.7 -13 2592 03 27 43 03 31 00 --- 23 57 23 34.0 253.7 3.6 46.9 197 2617 03 27 31 03 31 00 J2018+0831 23 57 23 31.8 251.4 3.6 45.6 -13 2617 03 31 13 03 32 30 --- 23 58 53 31.5 251.7 3.7 45.8 77 2627 03 31 01 03 32 30 MG2016 23 58 53 33.8 254.0 3.6 47.0 -12 2627 03 32 42 03 36 00 --- 00 02 24 33.1 254.7 3.7 47.2 198 2653 03 32 31 03 36 40 J2018+0831 00 03 04 30.8 252.6 3.7 46.0 27 2653 03 36 40 03 37 40 --- 00 04 04 30.6 252.8 3.7 46.1 60 2660 03 36 41 03 37 40 MG2016 00 04 04 32.8 255.1 3.7 47.3 -12 2660 03 37 52 03 41 10 --- 00 07 35 32.2 255.8 3.8 47.5 198 2686 03 37 41 03 41 10 J2018+0831 00 07 35 30.0 253.5 3.8 46.3 -13 2686 03 41 23 03 42 40 --- 00 09 05 29.7 253.8 3.8 46.4 77 2696 03 41 11 03 42 40 MG2016 00 09 05 31.9 256.1 3.8 47.6 -12 2696 03 42 52 03 46 10 --- 00 12 36 31.3 256.7 3.9 47.8 198 2721 03 42 41 03 46 50 J2018+0831 00 13 16 29.0 254.6 3.9 46.7 27 2721 03 46 50 03 47 50 --- 00 14 16 28.8 254.8 3.9 46.7 60 2729 03 46 51 03 47 50 MG2016 00 14 16 31.0 257.1 3.9 47.9 -12 2729 03 48 02 03 51 20 --- 00 17 46 30.3 257.7 4.0 48.1 198 2755 03 47 51 03 51 20 J2018+0831 00 17 46 28.2 255.5 4.0 46.9 -12 2755 03 51 32 03 52 50 --- 00 19 17 27.9 255.8 4.0 47.0 78 2765 03 51 21 03 52 50 MG2016 00 19 17 30.1 258.0 4.0 48.1 -12 2765 03 53 02 03 56 20 --- 00 22 47 29.4 258.7 4.0 48.3 198 2790 03 52 51 Schedule for VLBA_NL (Code Nl ) 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 00 23 27 27.1 256.5 4.1 47.2 28 2790 03 57 00 03 58 00 --- 00 24 28 27.0 256.7 4.1 47.2 60 2798 03 57 01 03 58 00 MG2016 00 24 28 29.1 259.0 4.1 48.3 -12 2798 03 58 12 04 01 30 --- 00 27 58 28.5 259.6 4.1 48.5 198 2823 03 58 01 04 01 30 J2018+0831 00 27 58 26.3 257.4 4.1 47.4 -12 2823 04 01 42 04 03 00 --- 00 29 28 26.0 257.7 4.2 47.5 78 2833 04 01 31 04 03 00 MG2016 00 29 28 28.2 259.9 4.2 48.5 -12 2833 04 03 12 04 06 30 --- 00 32 59 27.6 260.6 4.2 48.7 198 2859 04 03 01 04 07 10 J2018+0831 00 33 39 25.3 258.4 4.2 47.6 28 2859 04 07 10 04 08 10 --- 00 34 39 25.1 258.6 4.3 47.7 60 2867 04 07 11 04 08 10 MG2016 00 34 39 27.3 260.9 4.2 48.7 -12 2867 04 08 22 04 11 40 --- 00 38 10 26.6 261.5 4.3 48.8 198 2892 04 08 11 04 11 40 J2018+0831 00 38 10 24.5 259.3 4.3 47.8 -12 2892 04 11 52 04 13 10 --- 00 39 40 24.2 259.5 4.3 47.9 78 2902 04 11 41 04 13 10 MG2016 00 39 40 26.3 261.8 4.3 48.9 -12 2902 04 13 22 04 16 40 --- 00 43 11 25.7 262.4 4.4 49.0 198 2928 04 13 11 04 17 20 J2018+0831 00 43 51 23.4 260.3 4.4 48.0 28 2928 04 17 20 04 18 20 --- 00 44 51 23.2 260.5 4.4 48.1 60 2935 04 17 21 04 18 20 MG2016 00 44 51 25.4 262.7 4.4 49.0 -12 2935 04 18 32 04 21 50 --- 00 48 21 24.7 263.3 4.5 49.1 198 2961 04 18 21 04 21 50 J2018+0831 00 48 21 22.6 261.1 4.5 48.2 -12 2961 04 22 02 04 23 20 --- 00 49 52 22.3 261.4 4.5 48.2 78 2971 04 21 51 04 23 20 MG2016 00 49 52 24.4 263.6 4.5 49.1 -12 2971 04 23 32 04 26 50 --- 00 53 22 23.8 264.2 4.6 49.2 198 2996 04 23 21 04 27 30 J2018+0831 00 54 02 21.5 262.1 4.6 48.3 28 2996 04 27 30 04 28 30 --- 00 55 03 21.4 262.3 4.6 48.4 60 3004 04 27 31 04 28 30 MG2016 00 55 03 23.5 264.5 4.6 49.3 -12 3004 04 28 42 04 32 00 --- 00 58 33 22.8 265.1 4.6 49.3 198 3030 04 28 31 04 32 00 J2018+0831 00 58 33 20.7 262.9 4.7 48.5 -12 3030 04 32 12 04 33 30 --- 01 00 03 20.4 263.2 4.7 48.5 78 3040 04 32 01 Schedule for VLBA_NL (Code Nl ) 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 01 00 03 22.5 265.4 4.7 49.3 -12 3040 04 33 42 04 37 00 --- 01 03 34 21.9 266.0 4.7 49.4 198 3065 04 33 31 04 37 40 J2018+0831 01 04 14 19.7 263.9 4.8 48.6 28 3065 04 37 40 04 38 40 --- 01 05 14 19.5 264.1 4.8 48.6 60 3073 04 37 41 04 38 40 MG2016 01 05 14 21.6 266.2 4.8 49.4 -12 3073 04 38 52 04 42 10 --- 01 08 45 20.9 266.8 4.8 49.5 198 3098 04 38 41 04 42 10 J2018+0831 01 08 45 18.8 264.7 4.8 48.7 -12 3098 04 42 22 04 43 40 --- 01 10 15 18.5 264.9 4.9 48.7 78 3109 04 42 11 04 43 40 MG2016 01 10 15 20.7 267.1 4.8 49.5 -12 3109 04 43 52 04 47 10 --- 01 13 46 20.0 267.7 4.9 49.5 198 3134 04 43 41 04 47 50 J2018+0831 01 14 26 17.8 265.7 4.9 48.8 28 3134 04 47 50 04 48 50 --- 01 15 26 17.6 265.8 4.9 48.8 60 3142 04 47 51 04 48 50 MG2016 01 15 26 19.7 268.0 4.9 49.5 -12 3142 04 49 02 04 52 20 --- 01 18 56 19.0 268.6 5.0 49.5 198 3167 04 48 51 04 52 20 J2018+0831 01 18 56 16.9 266.4 5.0 48.8 -12 3167 04 52 32 04 53 50 --- 01 20 27 16.6 266.7 5.0 48.9 78 3177 04 52 21 04 53 50 MG2016 01 20 27 18.8 268.8 5.0 49.6 -12 3177 04 54 02 04 57 20 --- 01 23 57 18.1 269.4 5.1 49.6 198 3203 04 53 51 04 58 00 J2018+0831 01 24 37 15.9 267.4 5.1 48.9 28 3203 04 58 00 04 59 00 --- 01 25 38 15.7 267.6 5.1 48.9 60 3211 04 58 01 04 59 00 MG2016 01 25 38 17.8 269.7 5.1 49.6 -12 3211 04 59 12 05 02 30 --- 01 29 08 17.1 270.3 5.1 49.6 198 3236 04 59 01 05 02 30 J2018+0831 01 29 08 15.0 268.2 5.2 48.9 -12 3236 05 02 42 05 04 00 --- 01 30 38 14.7 268.4 5.2 48.9 78 3246 05 02 31 05 04 00 MG2016 01 30 38 16.9 270.5 5.2 49.6 -12 3246 05 04 12 05 07 30 --- 01 34 09 16.2 271.1 5.2 49.6 198 3272 05 04 01 05 08 10 J2018+0831 01 34 49 14.0 269.1 5.3 49.0 28 3272 05 08 10 05 09 10 --- 01 35 49 13.8 269.3 5.3 49.0 60 3279 05 08 11 05 09 10 MG2016 01 35 49 15.9 271.4 5.3 49.5 -12 3279 05 09 22 05 12 40 --- 01 39 20 15.2 272.0 5.3 49.5 198 3305 05 09 11 Schedule for VLBA_NL (Code Nl ) 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 01 39 20 13.1 269.9 5.3 49.0 -12 3305 05 12 52 05 14 10 --- 01 40 50 12.8 270.1 5.4 49.0 78 3315 05 12 41 05 14 10 MG2016 01 40 50 15.0 272.2 5.3 49.5 -12 3315 05 14 22 05 17 40 --- 01 44 21 14.3 272.8 5.4 49.5 198 3340 05 14 11 05 18 20 J2018+0831 01 45 01 12.1 270.8 5.4 49.0 28 3340 05 18 20 05 19 20 --- 01 46 01 11.9 271.0 5.4 49.0 60 3348 05 18 21 05 20 00 J2018+0831 01 46 41 11.7 271.1 5.5 49.0 34 3348 05 20 00 05 21 00 --- 01 47 41 11.6 271.3 5.5 48.9 60 3356 05 20 01 05 21 00 MG2016 01 47 41 13.7 273.3 5.5 49.5 -12 3356 05 21 12 05 24 30 --- 01 51 12 13.0 273.9 5.5 49.4 198 3381 05 21 01 05 24 30 J2018+0831 01 51 12 10.9 271.8 5.5 48.9 -12 3381 05 24 42 05 25 30 --- 01 52 12 10.7 272.0 5.6 48.9 48 3388 05 24 31 05 25 30 MG2016 01 52 12 12.8 274.1 5.5 49.4 -12 3388 05 25 42 05 29 00 --- 01 55 43 12.2 274.6 5.6 49.3 198 3413 05 25 31 05 29 00 J2018+0831 01 55 43 10.1 272.6 5.6 48.9 -12 3413 05 29 12 05 30 00 --- 01 56 43 9.9 272.7 5.6 48.9 48 3419 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: 4 Station: VLBA_NL 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