COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: Confirming the first detection of a merging dual SMBH system at high-z Exp. Code: gs044a 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 Ar confirms BBC tunings for their RDBE COVER LETTER: Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 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 16 16 20 MG2016 13 47 24 1.9 76.0 -6.5 D -46.5 0 0 16 16 20 16 19 50 --- 13 50 54 2.5 76.6 -6.5 H -46.6 0 27 16 16 21 16 21 20 MG2016 13 52 24 2.8 76.9 -6.5 H -46.7 84 27 16 21 20 16 24 50 --- 13 55 55 3.4 77.5 -6.4 H -46.8 0 54 16 21 21 16 26 30 MG2016 13 57 35 3.7 77.7 -6.4 H -46.9 94 54 16 26 30 16 30 00 --- 14 01 06 4.4 78.3 -6.3 H -47.0 0 81 16 26 31 16 30 00 J2018+0831 14 01 06 2.6 80.6 -6.3 H -46.9 -12 81 16 30 12 16 31 30 --- 14 02 36 2.8 80.9 -6.3 H -47.0 0 91 16 30 01 16 31 30 MG2016 14 02 36 4.6 78.6 -6.3 H -47.1 -12 91 16 31 42 16 35 00 --- 14 06 07 5.3 79.2 -6.2 -47.2 0 117 16 31 31 16 35 40 J2018+0831 14 06 47 3.6 81.6 -6.2 H -47.1 28 117 16 35 40 16 36 40 --- 14 07 47 3.8 81.8 -6.2 H -47.1 0 124 16 35 41 16 36 40 MG2016 14 07 47 5.6 79.4 -6.2 -47.3 -12 124 16 36 52 16 40 10 --- 14 11 18 6.2 80.0 -6.1 -47.4 198 150 16 36 41 16 40 10 J2018+0831 14 11 18 4.4 82.4 -6.1 H -47.2 -12 150 16 40 22 16 41 40 --- 14 12 48 4.7 82.6 -6.1 -47.3 0 160 16 40 11 16 41 40 MG2016 14 12 48 6.5 80.3 -6.1 -47.4 -12 160 16 41 52 16 45 10 --- 14 16 18 7.1 80.9 -6.1 -47.5 198 185 16 41 41 16 45 50 J2018+0831 14 16 58 5.5 83.3 -6.0 -47.3 28 185 16 45 50 16 46 50 --- 14 17 59 5.6 83.5 -6.0 -47.4 60 193 16 45 51 16 46 50 MG2016 14 17 59 7.4 81.1 -6.0 -47.6 -12 193 16 47 02 16 50 20 --- 14 21 29 8.0 81.7 -6.0 -47.7 198 219 16 46 51 16 50 20 J2018+0831 14 21 29 6.3 84.1 -6.0 -47.4 -12 219 16 50 32 16 51 50 --- 14 22 59 6.5 84.3 -5.9 -47.5 78 229 16 50 21 16 51 50 MG2016 14 22 59 8.3 82.0 -6.0 -47.7 -12 229 16 52 02 16 55 20 --- 14 26 30 9.0 82.6 -5.9 -47.8 198 254 16 51 51 16 56 00 J2018+0831 14 27 10 7.3 85.0 -5.9 -47.5 28 254 16 56 00 16 57 00 --- 14 28 10 7.5 85.2 -5.8 -47.6 60 262 16 56 01 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 16 57 00 MG2016 14 28 10 9.3 82.8 -5.9 -47.8 -12 262 16 57 12 17 00 30 --- 14 31 41 9.9 83.4 -5.8 -47.9 198 288 16 57 01 17 00 30 J2018+0831 14 31 41 8.1 85.8 -5.8 -47.6 -12 288 17 00 42 17 02 00 --- 14 33 11 8.4 86.0 -5.8 -47.6 78 298 17 00 31 17 02 00 MG2016 14 33 11 10.2 83.7 -5.8 -48.0 -12 298 17 02 12 17 05 30 --- 14 36 42 10.8 84.3 -5.7 -48.0 198 323 17 02 01 17 06 10 J2018+0831 14 37 22 9.2 86.8 -5.7 -47.7 28 323 17 06 10 17 07 10 --- 14 38 22 9.4 86.9 -5.7 -47.7 60 331 17 06 11 17 07 10 MG2016 14 38 22 11.1 84.5 -5.7 -48.1 -12 331 17 07 22 17 10 40 --- 14 41 53 11.8 85.1 -5.6 -48.1 198 356 17 07 11 17 10 40 J2018+0831 14 41 53 10.0 87.5 -5.6 -47.7 -12 356 17 10 52 17 12 10 --- 14 43 23 10.3 87.8 -5.6 -47.7 78 366 17 10 41 17 12 10 MG2016 14 43 23 12.0 85.4 -5.6 -48.1 -12 366 17 12 22 17 15 40 --- 14 46 53 12.7 86.0 -5.6 -48.2 198 392 17 12 11 17 16 20 J2018+0831 14 47 33 11.0 88.5 -5.5 -47.7 28 392 17 16 20 17 17 20 --- 14 48 34 11.2 88.6 -5.5 -47.8 60 400 17 16 21 17 17 20 MG2016 14 48 34 13.0 86.2 -5.5 -48.2 -12 400 17 17 32 17 20 50 --- 14 52 04 13.6 86.8 -5.5 -48.2 198 425 17 17 21 17 20 50 J2018+0831 14 52 04 11.9 89.2 -5.5 -47.8 -12 425 17 21 02 17 22 20 --- 14 53 34 12.1 89.5 -5.4 -47.8 78 435 17 20 51 17 22 20 MG2016 14 53 34 13.9 87.1 -5.4 -48.3 -12 435 17 22 32 17 25 50 --- 14 57 05 14.5 87.7 -5.4 -48.3 198 461 17 22 21 17 26 30 J2018+0831 14 57 45 12.9 90.2 -5.4 -47.8 28 461 17 26 30 17 27 30 --- 14 58 45 13.1 90.4 -5.3 -47.8 60 468 17 26 31 17 27 30 MG2016 14 58 45 14.8 88.0 -5.4 -48.3 -12 468 17 27 42 17 31 00 --- 15 02 16 15.5 88.5 -5.3 -48.3 198 494 17 27 31 17 31 00 J2018+0831 15 02 16 13.7 91.0 -5.3 -47.8 -12 494 17 31 12 17 32 30 --- 15 03 46 14.0 91.2 -5.3 -47.8 78 504 17 31 01 17 32 30 MG2016 15 03 46 15.8 88.8 -5.3 -48.3 -12 504 17 32 42 17 36 00 --- 15 07 17 16.4 89.4 -5.2 -48.3 198 529 17 32 31 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 17 36 40 J2018+0831 15 07 57 14.8 92.0 -5.2 -47.7 28 529 17 36 40 17 37 40 --- 15 08 57 14.9 92.1 -5.2 -47.7 60 537 17 36 41 17 37 40 MG2016 15 08 57 16.7 89.7 -5.2 -48.3 -12 537 17 37 52 17 41 10 --- 15 12 28 17.3 90.3 -5.1 -48.3 198 563 17 37 41 17 41 10 J2018+0831 15 12 28 15.6 92.7 -5.1 -47.7 -12 563 17 41 22 17 42 40 --- 15 13 58 15.9 93.0 -5.1 -47.7 78 573 17 41 11 17 42 40 MG2016 15 13 58 17.6 90.5 -5.1 -48.3 -12 573 17 42 52 17 46 10 --- 15 17 28 18.3 91.1 -5.0 -48.3 198 598 17 42 41 17 46 50 J2018+0831 15 18 09 16.6 93.7 -5.0 -47.6 28 598 17 46 50 17 47 50 --- 15 19 09 16.8 93.9 -5.0 -47.6 60 606 17 46 51 17 47 50 MG2016 15 19 09 18.6 91.4 -5.0 -48.3 -12 606 17 48 02 17 51 20 --- 15 22 39 19.2 92.0 -5.0 -48.3 198 631 17 47 51 17 51 20 J2018+0831 15 22 39 17.5 94.5 -4.9 -47.6 -12 631 17 51 32 17 52 50 --- 15 24 09 17.7 94.8 -4.9 -47.6 78 642 17 51 21 17 52 50 MG2016 15 24 09 19.5 92.3 -4.9 -48.3 -12 642 17 53 02 17 56 20 --- 15 27 40 20.1 92.9 -4.9 -48.3 198 667 17 52 51 17 57 00 J2018+0831 15 28 20 18.5 95.5 -4.8 -47.5 28 667 17 57 00 17 58 00 --- 15 29 20 18.7 95.7 -4.8 -47.5 60 675 17 57 01 17 58 00 MG2016 15 29 20 20.4 93.2 -4.8 -48.2 -12 675 17 58 12 18 01 30 --- 15 32 51 21.1 93.8 -4.8 -48.2 198 700 17 58 01 18 01 30 J2018+0831 15 32 51 19.3 96.3 -4.8 -47.4 -12 700 18 01 42 18 03 00 --- 15 34 21 19.6 96.6 -4.7 -47.4 78 710 18 01 31 18 03 00 MG2016 15 34 21 21.3 94.1 -4.8 -48.2 -12 710 18 03 12 18 06 30 --- 15 37 52 22.0 94.7 -4.7 -48.1 198 736 18 03 01 18 07 10 J2018+0831 15 38 32 20.3 97.3 -4.7 -47.3 28 736 18 07 10 18 08 10 --- 15 39 32 20.5 97.5 -4.7 -47.2 60 744 18 07 11 18 08 10 MG2016 15 39 32 22.3 95.0 -4.7 -48.1 -12 744 18 08 22 18 11 40 --- 15 43 03 22.9 95.6 -4.6 -48.0 198 769 18 08 11 18 11 40 J2018+0831 15 43 03 21.2 98.1 -4.6 -47.1 -12 769 18 11 52 18 13 10 --- 15 44 33 21.4 98.4 -4.6 -47.1 78 779 18 11 41 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 18 13 10 MG2016 15 44 33 23.2 95.9 -4.6 -48.0 -12 779 18 13 22 18 16 40 --- 15 48 03 23.8 96.5 -4.5 -47.9 198 805 18 13 11 18 17 20 J2018+0831 15 48 44 22.2 99.1 -4.5 -47.0 28 805 18 17 20 18 18 20 --- 15 49 44 22.4 99.3 -4.5 -46.9 60 812 18 17 21 18 18 20 MG2016 15 49 44 24.1 96.8 -4.5 -47.9 -12 812 18 18 32 18 21 50 --- 15 53 14 24.8 97.4 -4.4 -47.8 198 838 18 18 21 18 21 50 J2018+0831 15 53 14 23.0 100.0 -4.4 -46.8 -12 838 18 22 02 18 23 20 --- 15 54 44 23.3 100.2 -4.4 -46.8 78 848 18 21 51 18 23 20 MG2016 15 54 44 25.1 97.7 -4.4 -47.8 -12 848 18 23 32 18 26 50 --- 15 58 15 25.7 98.3 -4.4 -47.7 198 873 18 23 21 18 27 30 J2018+0831 15 58 55 24.0 101.0 -4.3 -46.6 28 873 18 27 30 18 28 30 --- 15 59 55 24.2 101.2 -4.3 -46.6 60 881 18 27 31 18 28 30 MG2016 15 59 55 26.0 98.6 -4.3 -47.6 -12 881 18 28 42 18 32 00 --- 16 03 26 26.6 99.3 -4.3 -47.5 198 907 18 28 31 18 32 00 J2018+0831 16 03 26 24.8 101.9 -4.3 -46.4 -12 907 18 32 12 18 33 30 --- 16 04 56 25.1 102.1 -4.2 -46.4 78 917 18 32 01 18 33 30 MG2016 16 04 56 26.9 99.6 -4.3 -47.5 -12 917 18 33 42 18 37 00 --- 16 08 27 27.5 100.2 -4.2 -47.3 198 942 18 33 31 18 37 40 J2018+0831 16 09 07 25.9 102.9 -4.2 -46.2 28 942 18 37 40 18 38 40 --- 16 10 07 26.0 103.1 -4.2 -46.1 60 950 18 37 41 18 38 40 MG2016 16 10 07 27.8 100.5 -4.2 -47.3 -12 950 18 38 52 18 42 10 --- 16 13 38 28.5 101.2 -4.1 -47.1 198 975 18 38 41 18 42 10 J2018+0831 16 13 38 26.7 103.8 -4.1 -46.0 -12 975 18 42 22 18 43 40 --- 16 15 08 26.9 104.1 -4.1 -45.9 78 985 18 42 11 18 43 40 MG2016 16 15 08 28.7 101.5 -4.1 -47.1 -12 985 18 43 52 18 47 10 --- 16 18 38 29.4 102.2 -4.0 -46.9 198 1011 18 43 41 18 47 50 J2018+0831 16 19 19 27.7 104.9 -4.0 -45.7 28 1011 18 47 50 18 48 50 --- 16 20 19 27.8 105.1 -4.0 -45.6 60 1019 18 47 51 18 48 50 MG2016 16 20 19 29.7 102.5 -4.0 -46.8 -12 1019 18 49 02 18 52 20 --- 16 23 49 30.3 103.2 -3.9 -46.7 198 1044 18 48 51 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 18 52 20 J2018+0831 16 23 49 28.5 105.8 -3.9 -45.4 -12 1044 18 52 32 18 53 50 --- 16 25 20 28.7 106.1 -3.9 -45.4 78 1054 18 52 21 18 53 50 MG2016 16 25 20 30.6 103.5 -3.9 -46.6 -12 1054 18 54 02 18 57 20 --- 16 28 50 31.2 104.1 -3.9 -46.4 198 1080 18 53 51 18 58 00 J2018+0831 16 29 30 29.5 106.9 -3.8 -45.1 28 1080 18 58 00 18 59 00 --- 16 30 30 29.6 107.1 -3.8 -45.0 60 1087 18 58 01 18 59 00 MG2016 16 30 30 31.5 104.5 -3.8 -46.3 -12 1087 18 59 12 19 02 30 --- 16 34 01 32.1 105.2 -3.8 -46.2 198 1113 18 59 01 19 02 30 J2018+0831 16 34 01 30.2 107.8 -3.8 -44.8 -12 1113 19 02 42 19 04 00 --- 16 35 31 30.5 108.1 -3.7 -44.7 78 1123 19 02 31 19 04 00 MG2016 16 35 31 32.4 105.5 -3.7 -46.1 -12 1123 19 04 12 19 07 30 --- 16 39 02 33.0 106.2 -3.7 -45.9 198 1149 19 04 01 19 08 10 J2018+0831 16 39 42 31.2 109.0 -3.7 -44.4 28 1149 19 08 10 19 09 10 --- 16 40 42 31.4 109.2 -3.6 -44.4 60 1156 19 08 11 19 09 10 MG2016 16 40 42 33.3 106.5 -3.7 -45.8 -12 1156 19 09 22 19 12 40 --- 16 44 13 33.9 107.2 -3.6 -45.5 198 1182 19 09 11 19 12 40 J2018+0831 16 44 13 32.0 109.9 -3.6 -44.1 -12 1182 19 12 52 19 14 10 --- 16 45 43 32.3 110.2 -3.6 -44.0 78 1192 19 12 41 19 14 10 MG2016 16 45 43 34.2 107.6 -3.6 -45.4 -12 1192 19 14 22 19 17 40 --- 16 49 13 34.8 108.3 -3.5 -45.2 198 1217 19 14 11 19 18 20 J2018+0831 16 49 54 33.0 111.1 -3.5 -43.7 28 1217 19 18 20 19 19 20 --- 16 50 54 33.2 111.3 -3.5 -43.6 60 1225 19 18 21 19 19 20 MG2016 16 50 54 35.1 108.6 -3.5 -45.1 -12 1225 19 19 32 19 22 50 --- 16 54 24 35.7 109.4 -3.4 -44.8 198 1251 19 19 21 19 22 50 J2018+0831 16 54 24 33.8 112.1 -3.4 -43.3 -12 1251 19 23 02 19 24 20 --- 16 55 55 34.0 112.4 -3.4 -43.2 78 1261 19 22 51 19 24 20 MG2016 16 55 55 35.9 109.7 -3.4 -44.7 -12 1261 19 24 32 19 27 50 --- 16 59 25 36.5 110.5 -3.3 -44.4 198 1286 19 24 21 19 28 30 J2018+0831 17 00 05 34.7 113.3 -3.3 -42.8 28 1286 19 28 30 19 29 30 --- 17 01 05 34.9 113.6 -3.3 -42.7 60 1294 19 28 31 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 19 36 10 MG2016 17 07 46 38.0 112.3 -3.2 -43.7 388 1294 19 36 10 19 39 40 --- 17 11 17 38.5 113.1 -3.1 -43.4 210 1321 19 36 11 19 39 40 J2018+0831 17 11 17 36.6 115.9 -3.1 -41.8 -12 1321 19 39 52 19 41 10 --- 17 12 47 36.8 116.2 -3.1 -41.6 78 1331 19 39 41 19 41 10 MG2016 17 12 47 38.8 113.5 -3.1 -43.3 -12 1331 19 41 22 19 44 40 --- 17 16 18 39.4 114.3 -3.1 -42.9 198 1356 19 41 11 19 45 20 J2018+0831 17 16 58 37.5 117.2 -3.0 -41.2 28 1356 19 45 20 19 46 20 --- 17 17 58 37.7 117.4 -3.0 -41.1 60 1364 19 45 21 19 46 20 MG2016 17 17 58 39.7 114.7 -3.0 -42.8 -12 1364 19 46 32 19 49 50 --- 17 21 29 40.2 115.5 -3.0 -42.4 198 1390 19 46 21 19 49 50 J2018+0831 17 21 29 38.2 118.2 -3.0 -40.7 -12 1390 19 50 02 19 51 20 --- 17 22 59 38.5 118.6 -2.9 -40.6 78 1400 19 49 51 19 51 20 MG2016 17 22 59 40.5 115.8 -3.0 -42.3 -12 1400 19 51 32 19 54 50 --- 17 26 30 41.1 116.7 -2.9 -41.9 198 1425 19 51 21 19 55 30 J2018+0831 17 27 10 39.1 119.6 -2.9 -40.1 28 1425 19 55 30 19 56 30 --- 17 28 10 39.3 119.9 -2.8 -40.0 60 1433 19 55 31 19 56 30 MG2016 17 28 10 41.3 117.1 -2.9 -41.7 -12 1433 19 56 42 20 00 00 --- 17 31 40 41.9 117.9 -2.8 -41.3 198 1458 19 56 31 20 00 00 J2018+0831 17 31 40 39.9 120.7 -2.8 -39.5 -12 1458 20 00 12 20 01 30 --- 17 33 11 40.1 121.1 -2.8 -39.4 78 1469 20 00 01 20 01 30 MG2016 17 33 11 42.2 118.3 -2.8 -41.1 -12 1469 20 01 42 20 05 00 --- 17 36 41 42.7 119.2 -2.7 -40.7 198 1494 20 01 31 20 05 40 J2018+0831 17 37 21 40.7 122.1 -2.7 -38.8 28 1494 20 05 40 20 06 40 --- 17 38 21 40.9 122.4 -2.7 -38.7 60 1502 20 05 41 20 06 40 MG2016 17 38 21 43.0 119.6 -2.7 -40.5 -12 1502 20 06 52 20 10 10 --- 17 41 52 43.5 120.5 -2.6 -40.1 198 1527 20 06 41 20 10 10 J2018+0831 17 41 52 41.4 123.3 -2.6 -38.2 -12 1527 20 10 22 20 11 40 --- 17 43 22 41.7 123.7 -2.6 -38.0 78 1537 20 10 11 20 11 40 MG2016 17 43 22 43.8 120.9 -2.6 -39.9 -13 1537 20 11 53 20 15 10 --- 17 46 53 44.3 121.8 -2.6 -39.4 197 1563 20 11 41 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 20 15 50 J2018+0831 17 47 33 42.3 124.8 -2.5 -37.4 27 1563 20 15 50 20 16 50 --- 17 48 33 42.5 125.1 -2.5 -37.3 60 1570 20 15 51 20 16 50 MG2016 17 48 33 44.6 122.3 -2.5 -39.2 -13 1570 20 17 03 20 20 20 --- 17 52 04 45.1 123.2 -2.5 -38.7 197 1596 20 16 51 20 20 20 J2018+0831 17 52 04 43.0 126.0 -2.5 -36.8 -13 1596 20 20 33 20 21 50 --- 17 53 34 43.2 126.4 -2.4 -36.6 77 1606 20 20 21 20 21 50 MG2016 17 53 34 45.4 123.6 -2.4 -38.5 -13 1606 20 22 03 20 25 20 --- 17 57 05 45.9 124.6 -2.4 -38.0 197 1631 20 21 51 20 26 00 J2018+0831 17 57 45 43.8 127.6 -2.4 -35.9 27 1631 20 26 00 20 27 00 --- 17 58 45 44.0 127.8 -2.3 -35.8 60 1639 20 26 01 20 27 00 MG2016 17 58 45 46.1 125.1 -2.4 -37.7 -13 1639 20 27 13 20 30 30 --- 18 02 15 46.7 126.1 -2.3 -37.2 197 1664 20 27 01 20 30 30 J2018+0831 18 02 15 44.5 128.8 -2.3 -35.2 -13 1664 20 30 43 20 32 00 --- 18 03 46 44.7 129.3 -2.3 -35.0 77 1674 20 30 31 20 32 00 MG2016 18 03 46 46.9 126.5 -2.3 -36.9 -13 1674 20 32 13 20 35 30 --- 18 07 16 47.4 127.5 -2.2 -36.4 197 1700 20 32 01 20 36 10 J2018+0831 18 07 56 45.3 130.5 -2.2 -34.3 27 1700 20 36 10 20 37 10 --- 18 08 56 45.4 130.7 -2.2 -34.1 60 1707 20 36 11 20 37 10 MG2016 18 08 56 47.6 128.0 -2.2 -36.1 -13 1707 20 37 23 20 40 40 --- 18 12 27 48.1 129.0 -2.1 -35.5 197 1733 20 37 11 20 41 20 J2018+0831 18 13 07 46.0 132.0 -2.1 -33.4 27 1733 20 41 20 20 42 20 --- 18 14 07 46.1 132.3 -2.1 -33.2 60 1740 20 41 21 20 42 20 MG2016 18 14 07 48.4 129.5 -2.1 -35.2 -13 1740 20 42 33 20 45 50 --- 18 17 38 48.9 130.6 -2.0 -34.6 197 1766 20 42 21 20 45 50 J2018+0831 18 17 38 46.6 133.3 -2.0 -32.6 -13 1766 20 46 03 20 47 20 --- 18 19 08 46.8 133.8 -2.0 -32.3 77 1776 20 45 51 20 47 20 MG2016 18 19 08 49.1 131.1 -2.0 -34.3 -13 1776 20 47 33 20 50 50 --- 18 22 39 49.6 132.1 -2.0 -33.6 197 1801 20 47 21 20 51 30 J2018+0831 18 23 19 47.3 135.1 -1.9 -31.5 27 1801 20 51 30 20 52 30 --- 18 24 19 47.5 135.4 -1.9 -31.3 60 1809 20 51 31 Schedule for VLBA_HN (Code Hn ) 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 ---------------------------------------------------------------------------------------- --- Sat 26 Oct 2019 Day 299 --- 20 52 30 MG2016 18 24 19 49.8 132.7 -1.9 -33.3 -13 1809 20 52 43 20 56 00 --- 18 27 50 50.3 133.8 -1.9 -32.6 197 1834 20 52 31 20 56 30 J2018+0831 18 28 20 48.0 136.6 -1.8 -30.6 17 1834 20 56 30 21 00 00 --- 18 31 50 48.4 137.8 -1.8 -29.8 210 1861 20 56 31 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: 3 Station: VLBA_HN 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: 15 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: 15 16 18 19 20 21 22 23 24 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 13.565900 0.00 11 17 44.97966 * 11 27 13.00000 11 31 08.04992 0.00 From catalog imbedded in main SCHED input file. * 3C345 16 41 17.606162 * 16 42 58.809900 16 43 36.764649 0.00 39 54 10.81394 * 39 48 36.99300 39 46 42.73413 0.00 From catalog imbedded in main SCHED input file. * J2018+0831 20 15 45.733430 * 20 18 11.311946 20 19 07.886706 0.00 08 22 30.62230 * 08 31 54.54739 08 35 47.14317 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 + 6.650 489.300 3C345 sess319.C1024glob 1 2 3 4 5 6 7 8 9 10 11 0.225 6.793 J2018+0831 sess319.C1024glob 1 2 3 4 5 6 7 8 9 10 11 15 + 2.525 164.241 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 96.6 3C345 64.2 J2018+0831 95.8 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