COVER INFORMATION Station: HART (Code Hh ) Experiment: Does Cygnus A harbor a binary black hole? Exp. Code: EB064E Schedule Version: 2.00 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 E of EB064 at 1.3cm. It involves 14 antennas Jb2, EF, MC, Nt, O60, Ur, Tr, Sr, Ys, Sv, Zc, Bd, Hh, and Mh 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, because the observation happen during sunrise 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 ---------------------------------------------------------------------------------------- --- Tue 11 Jun 2019 Day 162 --- Next scan frequencies: 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 Next BBC frequencies: 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 02 00 00 CYG-A 21 07 16 21.5 346.4 1.1 0.0 0 0 02 00 00 02 10 00 --- 21 17 18 21.0 344.5 1.3 0.0 600 77 02 00 01 02 10 30 CYG-A 21 17 48 20.9 344.4 1.3 0.0 9 77 02 10 30 02 20 30 --- 21 27 50 20.3 342.5 1.5 0.0 600 155 02 10 31 02 21 00 CYG-A 21 28 20 20.3 342.4 1.5 0.0 9 155 02 21 00 02 31 00 --- 21 38 21 19.5 340.5 1.6 0.0 600 232 02 21 01 02 31 30 CYG-A 21 38 51 19.5 340.4 1.6 0.0 9 232 02 31 30 02 41 30 --- 21 48 53 18.7 338.6 1.8 0.0 600 309 02 31 31 02 43 00 2013+370 21 50 23 23.1 339.8 1.6 0.0 55 309 02 43 00 02 48 00 --- 21 55 24 22.7 338.8 1.7 0.0 300 348 02 43 01 02 49 30 CYG-A 21 56 54 18.0 337.2 1.9 0.0 55 348 02 49 30 02 59 30 --- 22 06 56 17.1 335.4 2.1 0.0 600 425 02 49 31 03 00 00 CYG-A 22 07 26 17.1 335.3 2.1 0.0 9 425 03 00 00 03 10 00 --- 22 17 28 16.1 333.6 2.3 0.0 600 502 03 00 01 03 10 30 CYG-A 22 17 58 16.1 333.5 2.3 0.0 9 502 03 10 30 03 20 30 --- 22 27 59 15.0 331.9 2.5 0.0 600 580 03 10 31 03 21 00 CYG-A 22 28 29 15.0 331.8 2.5 0.0 9 580 03 21 00 03 31 00 --- 22 38 31 13.9 330.2 2.6 0.0 600 657 03 21 01 03 31 30 CYG-A 22 39 01 13.8 330.1 2.6 0.0 9 657 03 31 30 03 41 30 --- 22 49 03 12.7 328.6 2.8 0.0 600 734 03 31 31 03 42 00 CYG-A 22 49 33 12.6 328.5 2.8 0.0 9 734 03 42 00 03 52 00 --- 22 59 35 11.4 327.0 3.0 0.0 600 812 03 42 01 ---------- 5-min gap for pointing ---------- 03 58 00 2013+370 23 05 36 15.4 326.2 2.8 0.0 325 812 03 58 00 04 03 00 --- 23 10 36 14.7 325.4 2.9 0.0 300 850 03 58 01 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 ---------------------------------------------------------------------------------------- --- Tue 11 Jun 2019 Day 162 --- 04 04 45 CYG-A 23 12 22 9.8 325.1 3.2 0.0 70 850 04 04 45 04 14 45 --- 23 22 23 8.5 323.8 3.4 H 0.0 0 927 04 04 46 04 15 15 CYG-A 23 22 53 8.4 323.7 3.4 H 0.0 9 927 04 15 15 04 25 15 --- 23 32 55 7.1 322.4 3.5 D 0.0 0 1005 04 15 16 ---------- 5-min gap for pointing ---------- 05 24 30 BLLAC 00 32 20 13.6 332.6 2.5 0.0 3467 1005 05 24 30 05 29 30 --- 00 37 21 13.1 331.9 2.6 0.0 300 1043 05 24 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.K1024 --- 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: 1024 Format: VDIF Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 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: 9 Setup file default. Used with PCAL = off LO sum= 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 BBC fr= 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 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 09.503805 0.80 J1959+4044 40 35 46.36227 * 40 44 02.09608 40 47 06.71587 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 12.717190 0.09 J2015+3710 37 01 44.45878 * 37 10 59.51466 37 14 26.65487 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 31.480006 0.01 J2202+4216 42 02 08.59075 * 42 16 39.97988 42 22 01.97656 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 sess219.K1024 1 2 3 4 5 6 7 8 9 10 13 4.858 332.739 2013+370 sess219.K1024 1 2 3 4 5 6 7 8 9 10 13 0.250 18.667 BLLAC sess219.K1024 1 2 3 4 5 6 7 8 9 10 13 0.167 12.167 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 105.7 2013+370 106.4 BLLAC 87.1 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