COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: e-EVN observation of a possibly imminent merger of SMBH binary Exp. Code: RA005 Schedule Version: 3.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Tao AN Address: Shanghai Astronomical Observatory No. 80 Nandan Road Shanghai 200030 China Phone: +86-21-64386191 EMAIL: antao@shao.ac.cn Fax: Phone during observation: Observing mode: Phase-referencing Notes: 1.6 GHz, dual polarisation, 1024 Mbps eVLBI, 5.5 hours at GST: 0800-1330 Drafted by Yingkang Zhang Schedule for JODRELL1 (Code Jb ) Page 2 e-EVN observation of a possibly imminent merger of SMBH binary 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 ---------------------------------------------------------------------------------------- --- Sun 27 Feb 2022 Day 58 --- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 21 30 00 4C39.25 07 51 33 68.1 121.0 -1.6 -41.3 0 0 21 30 00 21 35 00 --- 07 56 34 68.8 123.0 -1.5 -40.2 300 39 21 30 01 21 38 00 J1430+2303 07 59 34 13.7 69.8 -6.5 -37.6 -241 39 21 38 00 21 42 30 --- 08 04 05 14.3 70.7 -6.5 -37.8 29 73 21 38 01 21 42 30 P1427+2348 08 04 05 15.4 70.8 -6.4 -38.1 -20 73 No stop 21 44 00 --- 08 05 35 15.6 71.1 -6.4 -38.2 70 85 21 42 31 21 44 00 J1430+2303 08 05 35 14.5 70.9 -6.4 -37.9 -19 85 No stop 21 48 30 --- 08 10 06 15.2 71.8 -6.4 -38.1 251 120 21 44 01 22 03 30 J1430+2303 08 25 08 17.3 74.6 -6.1 -38.8 891 120 22 03 30 22 06 30 --- 08 28 09 17.8 75.2 -6.1 -38.9 180 143 22 03 31 22 06 30 P1427+2348 08 28 09 18.8 75.3 -6.0 -39.2 -20 143 No stop 22 08 00 --- 08 29 39 19.0 75.6 -6.0 -39.3 70 155 22 06 31 22 08 00 J1430+2303 08 29 39 18.0 75.5 -6.0 -39.0 -19 155 No stop 22 12 30 --- 08 34 10 18.6 76.3 -6.0 -39.2 251 189 22 08 01 22 12 30 P1427+2348 08 34 10 19.7 76.4 -5.9 -39.4 -20 189 No stop 22 14 00 --- 08 35 40 19.9 76.7 -5.9 -39.5 70 201 22 12 31 22 14 00 J1430+2303 08 35 40 18.8 76.6 -5.9 -39.2 -19 201 No stop 22 18 30 --- 08 40 11 19.5 77.4 -5.9 -39.4 251 236 22 14 01 22 33 30 J1430+2303 08 55 13 21.7 80.3 -5.6 -39.8 891 236 22 33 30 22 36 30 --- 08 58 14 22.2 80.9 -5.6 -39.9 180 259 22 33 31 22 36 30 P1427+2348 08 58 14 23.2 81.0 -5.5 -40.2 -20 259 No stop 22 38 00 --- 08 59 44 23.4 81.3 -5.5 -40.2 70 271 22 36 31 22 38 00 J1430+2303 08 59 44 22.4 81.2 -5.5 -40.0 -19 271 No stop 22 42 30 --- 09 04 15 23.0 82.0 -5.5 -40.1 251 305 22 38 01 22 42 30 P1427+2348 09 04 15 24.1 82.1 -5.4 -40.4 -20 305 No stop 22 44 00 --- 09 05 45 24.3 82.4 -5.4 -40.4 70 317 22 42 31 22 44 00 J1430+2303 09 05 45 23.3 82.3 -5.4 -40.1 -19 317 No stop 22 48 30 --- 09 10 16 23.9 83.2 -5.4 -40.2 251 352 22 44 01 Schedule for JODRELL1 (Code Jb ) Page 3 e-EVN observation of a possibly imminent merger of SMBH binary 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 ---------------------------------------------------------------------------------------- --- Sun 27 Feb 2022 Day 58 --- 23 03 30 J1430+2303 09 25 18 26.2 86.1 -5.1 -40.4 891 352 23 03 30 23 06 30 --- 09 28 19 26.6 86.7 -5.0 -40.5 180 375 23 03 31 23 06 30 P1427+2348 09 28 19 27.7 86.8 -5.0 -40.7 -20 375 No stop 23 08 00 --- 09 29 49 27.9 87.1 -5.0 -40.8 70 386 23 06 31 23 08 00 J1430+2303 09 29 49 26.9 87.0 -5.0 -40.5 -19 386 No stop 23 12 30 --- 09 34 20 27.5 87.9 -4.9 -40.5 251 421 23 08 01 23 12 30 P1427+2348 09 34 20 28.6 88.0 -4.9 -40.8 -20 421 No stop 23 14 00 --- 09 35 50 28.8 88.3 -4.9 -40.8 70 433 23 12 31 23 14 00 J1430+2303 09 35 50 27.8 88.2 -4.9 -40.5 -19 433 No stop 23 18 30 --- 09 40 21 28.4 89.1 -4.8 -40.5 251 468 23 14 01 23 33 30 J1430+2303 09 55 23 30.7 92.1 -4.6 -40.5 891 468 23 33 30 23 36 30 --- 09 58 24 31.1 92.7 -4.5 -40.5 180 491 23 33 31 23 36 30 P1427+2348 09 58 24 32.2 92.8 -4.5 -40.8 -20 491 No stop 23 38 00 --- 09 59 54 32.4 93.1 -4.5 -40.7 70 502 23 36 31 23 38 00 J1430+2303 09 59 54 31.4 93.0 -4.5 -40.5 -19 502 No stop 23 42 30 --- 10 04 24 32.0 93.9 -4.4 -40.4 251 537 23 38 01 23 42 30 P1427+2348 10 04 24 33.1 94.0 -4.4 -40.7 -20 537 No stop 23 44 00 --- 10 05 55 33.3 94.3 -4.4 -40.7 70 549 23 42 31 23 44 00 J1430+2303 10 05 55 32.3 94.2 -4.4 -40.4 -19 549 No stop 23 48 30 --- 10 10 25 32.9 95.2 -4.3 -40.3 251 584 23 44 01 --- Mon 28 Feb 2022 Day 59 --- 00 03 30 J1430+2303 10 25 28 35.2 98.4 -4.1 -40.0 891 584 00 03 30 00 06 30 --- 10 28 28 35.6 99.0 -4.0 -39.9 180 607 00 03 31 00 06 30 P1427+2348 10 28 28 36.7 99.1 -4.0 -40.2 -20 607 No stop 00 08 00 --- 10 29 59 36.9 99.5 -4.0 -40.1 70 618 00 06 31 00 10 00 3C345 10 31 59 29.3 61.6 -6.2 -43.3 -46 618 00 10 00 00 15 00 --- 10 37 00 29.9 62.4 -6.1 -43.7 254 657 00 10 01 00 16 30 P1427+2348 10 38 30 38.1 101.4 -3.8 -39.9 -82 657 00 16 30 00 18 00 --- 10 40 00 38.3 101.7 -3.8 -39.8 8 669 00 16 31 Schedule for JODRELL1 (Code Jb ) Page 4 e-EVN observation of a possibly imminent merger of SMBH binary 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 ---------------------------------------------------------------------------------------- --- Mon 28 Feb 2022 Day 59 --- 00 18 00 J1430+2303 10 40 00 37.3 101.6 -3.9 -39.6 -19 669 No stop 00 22 30 --- 10 44 31 38.0 102.6 -3.8 -39.4 251 703 00 18 01 00 22 30 P1427+2348 10 44 31 39.0 102.7 -3.7 -39.6 -20 703 No stop 00 24 00 --- 10 46 01 39.2 103.1 -3.7 -39.5 70 715 00 22 31 00 24 00 J1430+2303 10 46 01 38.2 102.9 -3.8 -39.3 -19 715 No stop 00 28 30 --- 10 50 32 38.8 103.9 -3.7 -39.1 251 750 00 24 01 00 43 30 J1430+2303 11 05 35 41.0 107.5 -3.4 -38.3 890 750 00 43 30 00 46 30 --- 11 08 35 41.4 108.2 -3.4 -38.1 180 773 00 43 31 00 46 30 P1427+2348 11 08 35 42.5 108.4 -3.3 -38.3 -20 773 No stop 00 48 00 --- 11 10 05 42.7 108.7 -3.3 -38.2 70 785 00 46 31 00 48 00 J1430+2303 11 10 05 41.6 108.6 -3.4 -38.0 -19 785 No stop 00 52 30 --- 11 14 36 42.3 109.7 -3.3 -37.7 251 819 00 48 01 00 52 30 P1427+2348 11 14 36 43.3 109.8 -3.2 -37.9 -20 819 No stop 00 54 00 --- 11 16 06 43.5 110.2 -3.2 -37.8 70 831 00 52 31 00 54 00 J1430+2303 11 16 06 42.5 110.0 -3.3 -37.6 -19 831 No stop 00 58 30 --- 11 20 37 43.1 111.1 -3.2 -37.3 251 866 00 54 01 01 13 30 J1430+2303 11 35 39 45.2 115.0 -2.9 -36.1 890 866 01 13 30 01 16 30 --- 11 38 40 45.6 115.8 -2.9 -35.8 180 889 01 13 31 01 16 30 P1427+2348 11 38 40 46.6 116.1 -2.8 -36.0 -20 889 No stop 01 18 00 --- 11 40 10 46.8 116.5 -2.8 -35.8 70 900 01 16 31 01 18 00 J1430+2303 11 40 10 45.8 116.2 -2.9 -35.7 -19 900 No stop 01 22 30 --- 11 44 41 46.4 117.4 -2.8 -35.2 251 935 01 18 01 01 22 30 P1427+2348 11 44 41 47.4 117.7 -2.7 -35.4 -20 935 No stop 01 24 00 --- 11 46 11 47.6 118.1 -2.7 -35.2 70 947 01 22 31 01 24 00 J1430+2303 11 46 11 46.6 117.8 -2.8 -35.1 -19 947 No stop 01 28 30 --- 11 50 42 47.2 119.1 -2.7 -34.6 251 982 01 24 01 01 43 30 J1430+2303 12 05 44 49.1 123.4 -2.4 -32.9 890 982 01 43 30 01 46 30 --- 12 08 45 49.5 124.3 -2.4 -32.5 180 1005 01 43 31 01 46 30 P1427+2348 12 08 45 50.5 124.7 -2.3 -32.5 -20 1005 No stop 01 48 00 --- 12 10 15 50.7 125.1 -2.3 -32.3 70 1016 01 46 31 Schedule for JODRELL1 (Code Jb ) Page 5 e-EVN observation of a possibly imminent merger of SMBH binary 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 ---------------------------------------------------------------------------------------- --- Mon 28 Feb 2022 Day 59 --- 01 48 00 J1430+2303 12 10 15 49.7 124.8 -2.4 -32.3 -19 1016 No stop 01 52 30 --- 12 14 46 50.2 126.1 -2.3 -31.7 251 1051 01 48 01 01 52 30 P1427+2348 12 14 46 51.3 126.5 -2.2 -31.7 -20 1051 No stop 01 54 00 --- 12 16 16 51.4 127.0 -2.2 -31.5 70 1063 01 52 31 01 54 00 J1430+2303 12 16 16 50.4 126.6 -2.3 -31.5 -19 1063 No stop 01 58 30 --- 12 20 47 51.0 128.0 -2.2 -30.8 251 1098 01 54 01 02 13 30 J1430+2303 12 35 49 52.7 132.9 -1.9 -28.5 889 1098 02 13 30 02 16 30 --- 12 38 50 53.0 133.9 -1.9 -27.9 180 1121 02 13 31 02 16 30 P1427+2348 12 38 50 54.0 134.4 -1.8 -27.8 -19 1121 No stop 02 18 00 --- 12 40 20 54.2 134.9 -1.8 -27.6 71 1132 02 16 31 02 18 00 J1430+2303 12 40 20 53.2 134.4 -1.8 -27.7 -19 1132 No stop 02 22 30 --- 12 44 51 53.6 135.9 -1.8 -26.9 251 1167 02 18 01 02 22 30 P1427+2348 12 44 51 54.6 136.5 -1.7 -26.7 -19 1167 No stop 02 24 00 --- 12 46 21 54.8 137.0 -1.7 -26.5 71 1179 02 22 31 02 24 00 J1430+2303 12 46 21 53.8 136.5 -1.7 -26.6 -19 1179 No stop 02 28 30 --- 12 50 52 54.2 138.0 -1.7 -25.8 251 1213 02 24 01 02 43 30 J1430+2303 13 05 54 55.7 143.5 -1.4 -22.7 889 1213 02 43 30 02 46 30 --- 13 08 55 55.9 144.7 -1.4 -22.1 180 1237 02 43 31 02 46 30 P1427+2348 13 08 55 56.9 145.4 -1.3 -21.8 -19 1237 No stop 02 48 00 --- 13 10 25 57.0 146.0 -1.3 -21.4 71 1248 02 46 31 02 48 00 J1430+2303 13 10 25 56.1 145.3 -1.3 -21.7 -19 1248 No stop 02 52 30 --- 13 14 56 56.4 147.0 -1.3 -20.7 251 1283 02 48 01 02 52 30 P1427+2348 13 14 56 57.4 147.8 -1.2 -20.4 -19 1283 No stop 02 54 00 --- 13 16 26 57.5 148.4 -1.2 -20.0 71 1295 02 52 31 02 55 00 3C345 13 17 26 53.0 90.0 -3.4 -51.1 -187 1295 02 55 00 03 00 00 --- 13 22 27 53.7 91.0 -3.4 -51.1 113 1333 02 55 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess122.L1024 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 6 Station: JODRELL1 Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 14 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 14 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) * J1430+2303 14 27 59.601806 * 14 30 16.055000 14 31 16.596793 0.00 23 17 02.67583 * 23 03 45.47000 22 57 41.15066 0.00 From catalog imbedded in main SCHED input file. from FIRST survey, ~ 1 mJy * P1427+2348 14 24 44.222647 * 14 27 00.391800 14 28 00.833226 0.00 24 01 25.78988 * 23 48 00.03800 23 41 51.89033 0.00 From catalog imbedded in main SCHED input file. 1.05 deg, S-K >100 mJy * 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 26.794070 0.31 J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 35.74524 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 observations. * 3C345 16 41 17.606229 * 16 42 58.809967 16 43 43.111234 0.79 J1642+3948 39 54 10.81492 * 39 48 36.99399 39 45 49.57111 0.59 1641+399 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1642+39 GSFC 2016a X/S astro solution, 53724 observations. 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 J1430+2303 sess122.L1024 1 2 3 4 5 6 7 8 9 10 13 14 + 3.575 324.895 P1427+2348 sess122.L1024 1 2 3 4 5 6 7 8 9 10 13 14 + 1.325 101.966 4C39.25 sess122.L1024 1 2 3 4 5 7 8 9 10 13 14 15 0.083 7.583 3C345 sess122.L1024 1 2 3 4 5 6 7 8 9 10 13 14 + 0.167 12.338 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) J1430+2303 123.6 P1427+2348 124.2 4C39.25 144.8 3C345 95.2 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