COVER INFORMATION Station: HART (Code Hh ) Experiment: Does Cygnus A harbor a binary black hole? Exp. Code: EB064G Schedule Version: 3.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Uwe Bach Address: Max-Planck-Institut fuer Radioastronomie Auf dem Huegel 69 53121 Bonn Germany Phone: 0049-2257-301-168 EMAIL: ubach@mpifr-bonn.mpg.de Fax: 0049-2257-301-106 Phone during observation: 0049-2257-301-155 Observing mode: Notes: Use 2013+370 as fring tracer and BL Lac as 2nd calibrators COVER LETTER: This is the schedule for epoch G of EB064 at 1.3cm. It involves 17 antennas EF, MC, Nt, O60, T6, Ur, Tr, Sr, Ys, Sv, Zc, Bd, Hh, Mh, Kt, Ky, and Ku and runs at a standard 1 Gbps continuum mode. Gaps between scans are adjusted to allow time for Tsys measurements on source and some pointing time every 1.5 hours at Effelsberg. Fringe finders are 2013+370 and BL Lac. Schedule for HART (Code Hh ) Page 2 Does Cygnus A harbor a binary black hole? 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 ---------------------------------------------------------------------------------------- --- Fri 5 Jun 2020 Day 157 --- Next scan frequencies: 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 Next BBC frequencies: 659.49 659.49 659.49 659.49 723.49 723.49 723.49 723.49 787.49 787.49 787.49 787.49 851.49 851.49 851.49 851.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 22 00 00 CYG-A 16 49 53 10.0 34.6 -3.2 0.0 0 0 22 00 00 22 08 00 --- 16 57 55 11.0 33.4 -3.0 0.0 480 124 22 00 01 22 09 00 2013+370 16 58 55 11.7 38.1 -3.3 0.0 25 124 22 09 00 22 14 00 --- 17 03 56 12.4 37.3 -3.2 0.0 300 201 22 09 01 22 15 00 CYG-A 17 04 56 11.9 32.4 -2.9 0.0 25 201 22 15 00 22 25 00 --- 17 14 57 13.1 30.9 -2.8 0.0 600 356 22 15 01 22 25 30 CYG-A 17 15 27 13.1 30.8 -2.7 0.0 9 356 22 25 30 22 35 30 --- 17 25 29 14.3 29.2 -2.6 0.0 600 510 22 25 31 22 36 00 CYG-A 17 25 59 14.3 29.1 -2.6 0.0 9 510 22 36 00 22 46 00 --- 17 36 01 15.4 27.5 -2.4 0.0 600 665 22 36 01 22 46 30 CYG-A 17 36 31 15.5 27.4 -2.4 0.0 9 665 22 46 30 22 56 30 --- 17 46 32 16.5 25.8 -2.2 0.0 600 819 22 46 31 22 57 00 CYG-A 17 47 03 16.5 25.7 -2.2 0.0 9 819 22 57 00 23 07 00 --- 17 57 04 17.5 24.0 -2.1 0.0 600 974 22 57 01 23 07 30 CYG-A 17 57 34 17.5 23.9 -2.0 0.0 9 974 23 07 30 23 17 30 --- 18 07 36 18.4 22.1 -1.9 0.0 600 1128 23 07 31 ---------- 5-min gap for pointing ---------- 23 23 30 2013+370 18 13 37 20.6 25.7 -2.0 0.0 325 1128 23 23 30 23 28 30 --- 18 18 38 21.1 24.8 -2.0 0.0 300 1206 23 23 31 23 30 15 CYG-A 18 20 23 19.4 19.8 -1.7 0.0 70 1206 23 30 15 23 40 15 --- 18 30 25 20.1 17.9 -1.5 0.0 600 1360 23 30 16 23 40 45 CYG-A 18 30 55 20.2 17.8 -1.5 0.0 9 1360 23 40 45 23 50 45 --- 18 40 56 20.8 15.9 -1.3 0.0 600 1515 23 40 46 --- Start: Fri 5 Jun 2020 Day 157 -- Stop: Sat 6 Jun 2020 Day 158 --- 23 51 15 CYG-A 18 41 26 20.9 15.8 -1.3 0.0 9 1515 23 51 15 00 01 15 --- 18 51 28 21.4 13.9 -1.1 0.0 600 1669 23 51 16 Schedule for HART (Code Hh ) Page 3 Does Cygnus A harbor a binary black hole? 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 6 Jun 2020 Day 158 --- 00 01 45 CYG-A 18 51 58 21.5 13.8 -1.1 0.0 9 1669 00 01 45 00 11 45 --- 19 02 00 22.0 11.8 -1.0 0.0 600 1824 00 01 46 00 12 15 CYG-A 19 02 30 22.0 11.7 -1.0 0.0 9 1824 00 12 15 00 22 15 --- 19 12 32 22.4 9.7 -0.8 0.0 600 1979 00 12 16 00 22 45 CYG-A 19 13 02 22.4 9.6 -0.8 0.0 9 1979 00 22 45 00 32 45 --- 19 23 03 22.8 7.6 -0.6 0.0 600 2133 00 22 46 00 33 15 CYG-A 19 23 33 22.8 7.5 -0.6 0.0 9 2133 00 33 15 00 43 15 --- 19 33 35 23.0 5.5 -0.4 0.0 600 2288 00 33 16 ---------- 5-min gap for pointing ---------- 00 50 15 BLLAC 19 40 36 14.2 26.4 -2.4 0.0 332 2288 00 50 15 00 55 15 --- 19 45 37 14.7 25.6 -2.3 0.0 300 2365 00 50 16 00 57 08 CYG-A 19 47 30 23.3 2.6 -0.2 0.0 24 2365 00 57 08 01 07 08 --- 19 57 32 23.3 0.5 -0.0 0.0 600 2520 00 57 09 01 07 38 CYG-A 19 58 02 23.3 0.4 -0.0 0.0 9 2520 01 07 38 01 17 38 --- 20 08 03 23.3 358.4 0.1 0.0 600 2674 01 07 39 01 18 08 CYG-A 20 08 34 23.3 358.3 0.1 0.0 9 2674 01 18 08 01 28 08 --- 20 18 35 23.2 356.2 0.3 0.0 600 2829 01 18 09 01 28 38 CYG-A 20 19 05 23.2 356.1 0.3 0.0 9 2829 01 28 38 01 38 38 --- 20 29 07 23.0 354.1 0.5 0.0 600 2983 01 28 39 01 39 08 CYG-A 20 29 37 23.0 354.0 0.5 0.0 9 2983 01 39 08 01 49 08 --- 20 39 39 22.7 351.9 0.7 0.0 600 3138 01 39 09 01 49 38 CYG-A 20 40 09 22.7 351.8 0.7 0.0 9 3138 01 49 38 01 59 38 --- 20 50 10 22.3 349.8 0.8 0.0 600 3293 01 49 39 02 00 08 CYG-A 20 50 40 22.3 349.7 0.8 0.0 9 3293 02 00 08 02 10 08 --- 21 00 42 21.9 347.7 1.0 0.0 600 3447 02 00 09 ---------- 5-min gap for pointing ---------- 02 19 48 BLLAC 21 10 24 20.6 10.5 -0.9 0.0 492 3447 02 19 48 02 24 48 --- 21 15 25 20.8 9.5 -0.8 0.0 300 3524 02 19 49 02 28 33 CYG-A 21 19 11 20.8 344.1 1.3 0.0 136 3524 02 28 33 02 38 33 --- 21 29 12 20.2 342.2 1.5 0.0 600 3679 02 28 34 Schedule for HART (Code Hh ) Page 4 Does Cygnus A harbor a binary black hole? 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 6 Jun 2020 Day 158 --- 02 39 03 CYG-A 21 29 42 20.2 342.1 1.5 0.0 9 3679 02 39 03 02 49 03 --- 21 39 44 19.4 340.3 1.7 0.0 600 3834 02 39 04 02 49 33 CYG-A 21 40 14 19.4 340.2 1.7 0.0 9 3834 02 49 33 02 59 33 --- 21 50 16 18.6 338.3 1.8 0.0 600 3988 02 49 34 03 00 03 CYG-A 21 50 46 18.6 338.3 1.8 0.0 9 3988 03 00 03 03 10 03 --- 22 00 48 17.7 336.5 2.0 0.0 600 4143 03 00 04 03 10 33 CYG-A 22 01 18 17.6 336.4 2.0 0.0 9 4143 03 10 33 03 20 33 --- 22 11 19 16.7 334.7 2.2 0.0 600 4297 03 10 34 03 22 23 2013+370 22 13 10 21.1 335.4 1.9 0.0 75 4297 03 22 23 03 27 23 --- 22 18 10 20.7 334.4 2.0 0.0 300 4375 03 22 24 03 28 53 CYG-A 22 19 41 15.9 333.3 2.3 0.0 55 4375 03 28 53 03 38 53 --- 22 29 42 14.8 331.6 2.5 0.0 600 4529 03 28 54 03 39 23 CYG-A 22 30 12 14.8 331.5 2.5 0.0 9 4529 03 39 23 03 49 23 --- 22 40 14 13.7 329.9 2.7 0.0 600 4684 03 39 24 03 49 53 CYG-A 22 40 44 13.6 329.9 2.7 0.0 9 4684 03 49 53 03 59 53 --- 22 50 46 12.5 328.3 2.8 0.0 600 4838 03 49 54 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess220.K2048 --- 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: 7 Station: HART Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 21480.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 5 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 BBC fr= 659.49 659.49 659.49 659.49 723.49 723.49 723.49 723.49 787.49 787.49 787.49 787.49 851.49 851.49 851.49 851.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 5 9 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) CYGNUS-A 19 57 44.440790 * 19 59 28.356468 20 00 11.340635 0.80 J1959+4044 40 35 46.36227 * 40 44 02.09608 40 47 12.78871 0.53 * CYG-A /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1959+40 GSFC 2016a X/S astro solution, 27 observations. 1957+405 1957+404 1957+40 * 2013+370 20 13 37.014517 * 20 15 28.729803 20 16 14.704553 0.09 J2015+3710 37 01 44.45878 * 37 10 59.51466 37 14 34.05191 0.12 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 131 observations. VR422201 22 00 39.362504 * 22 02 43.291371 22 03 33.600499 0.01 J2202+4216 42 02 08.59075 * 42 16 39.97988 42 22 16.78112 0.00 * BLLAC /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc 2200+420 GSFC 2016a X/S astro solution, 52189 observations. J2202+42 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 CYG-A sess220.K2048 1 2 3 4 5 6 7 8 10 15 16 4.800 606.475 2013+370 sess220.K2048 1 2 3 4 5 6 7 8 10 15 16 0.250 32.019 BLLAC sess220.K2048 1 2 3 4 5 6 7 8 10 15 16 0.167 24.083 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) CYG-A 103.8 2013+370 104.1 BLLAC 84.4 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