COVER INFORMATION Station: HART (Code Hh ) Experiment: Does Cygnus A harbor a binary black hole? Exp. Code: EB064D Schedule Version: 1.00 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 D 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 ---------------------------------------------------------------------------------------- --- Thu 8 Nov 2018 Day 312 --- 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 16 00 00 CYG-A 21 01 55 21.8 347.5 1.0 0.0 0 0 16 00 00 16 10 00 --- 21 11 56 21.3 345.5 1.2 0.0 600 77 16 00 01 16 10 30 CYG-A 21 12 26 21.2 345.4 1.2 0.0 9 77 16 10 30 16 20 30 --- 21 22 28 20.6 343.5 1.4 0.0 600 155 16 10 31 16 21 00 CYG-A 21 22 58 20.6 343.4 1.4 0.0 9 155 16 21 00 16 36 00 --- 21 38 01 19.6 340.6 1.6 0.0 900 271 16 21 01 16 37 30 2013+370 21 39 31 23.9 342.0 1.4 0.0 55 271 16 37 30 16 42 30 --- 21 44 32 23.5 340.9 1.5 0.0 300 309 16 37 31 16 44 00 CYG-A 21 46 02 18.9 339.1 1.8 0.0 55 309 16 44 00 16 54 00 --- 21 56 04 18.1 337.3 1.9 0.0 600 386 16 44 01 16 54 30 CYG-A 21 56 34 18.0 337.2 1.9 0.0 9 386 16 54 30 17 04 30 --- 22 06 35 17.1 335.5 2.1 0.0 600 464 16 54 31 17 05 00 CYG-A 22 07 05 17.1 335.4 2.1 0.0 9 464 17 05 00 17 15 00 --- 22 17 07 16.1 333.7 2.3 0.0 600 541 17 05 01 17 15 30 CYG-A 22 17 37 16.1 333.6 2.3 0.0 9 541 17 15 30 17 25 30 --- 22 27 39 15.0 331.9 2.5 0.0 600 618 17 15 31 17 26 00 CYG-A 22 28 09 15.0 331.8 2.5 0.0 9 618 17 26 00 17 36 00 --- 22 38 11 13.9 330.2 2.6 0.0 600 696 17 26 01 17 36 30 CYG-A 22 38 41 13.8 330.2 2.6 0.0 9 696 17 36 30 17 46 30 --- 22 48 42 12.7 328.6 2.8 0.0 600 773 17 36 31 ---------- 5-min gap for pointing ---------- 17 53 25 2013+370 22 55 38 16.6 327.8 2.7 0.0 380 773 17 53 25 17 58 25 --- 23 00 39 16.0 327.0 2.7 0.0 300 812 17 53 26 18 00 10 CYG-A 23 02 24 11.0 326.6 3.0 0.0 70 812 18 00 10 18 10 10 --- 23 12 26 9.8 325.1 3.2 0.0 600 889 18 00 11 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 ---------------------------------------------------------------------------------------- --- Thu 8 Nov 2018 Day 312 --- 18 10 40 CYG-A 23 12 56 9.7 325.1 3.2 0.0 9 889 18 10 40 18 20 40 --- 23 22 57 8.4 323.7 3.4 H 0.0 0 966 18 10 41 18 21 10 CYG-A 23 23 27 8.3 323.6 3.4 H 0.0 9 966 18 21 10 18 31 10 --- 23 33 29 7.0 322.3 3.6 D 0.0 0 1043 18 21 11 ---------- 5-min gap for pointing ---------- 19 19 55 BLLAC 00 22 22 14.6 334.2 2.3 0.0 2837 1043 19 19 55 19 24 55 --- 00 27 23 14.1 333.4 2.4 0.0 300 1082 19 19 56 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess318.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: 12 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: 12 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 06.377263 0.80 J1959+4044 40 35 46.36227 * 40 44 02.09608 40 47 27.97847 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 09.783715 0.09 J2015+3710 37 01 44.45878 * 37 10 59.51466 37 14 46.81774 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 29.845094 0.01 J2202+4216 42 02 08.59075 * 42 16 39.97988 42 22 23.52081 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 sess318.K1024 1 2 3 4 5 6 7 8 9 12 13 4.833 332.948 2013+370 sess318.K1024 1 2 3 4 5 6 7 8 9 12 13 0.250 18.667 BLLAC sess318.K1024 1 2 3 4 5 6 7 8 9 12 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 90.8 2013+370 92.5 BLLAC 113.6 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