COVER INFORMATION Station: HART (Code Hh ) Experiment: Does Cygnus A harbor a binary black hole? Exp. Code: EB064F 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 F of EB064 at 1.3cm. It involves 17 antennas Jb2, 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, 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 22 00 00 CYG-A 17 10 33 12.6 31.5 -2.8 0.0 0 0 22 00 00 22 08 00 --- 17 18 35 13.5 30.3 -2.7 0.0 480 62 22 00 01 22 09 00 2013+370 17 19 35 14.5 34.9 -2.9 0.0 25 62 22 09 00 22 14 00 --- 17 24 36 15.1 34.1 -2.9 0.0 300 100 22 09 01 22 15 00 CYG-A 17 25 36 14.3 29.2 -2.6 0.0 25 100 22 15 00 22 25 00 --- 17 35 37 15.4 27.6 -2.4 0.0 600 178 22 15 01 22 25 30 CYG-A 17 36 07 15.4 27.5 -2.4 0.0 9 178 22 25 30 22 35 30 --- 17 46 09 16.4 25.8 -2.2 0.0 600 255 22 25 31 22 36 00 CYG-A 17 46 39 16.5 25.7 -2.2 0.0 9 255 22 36 00 22 46 00 --- 17 56 41 17.4 24.0 -2.1 0.0 600 332 22 36 01 22 46 30 CYG-A 17 57 11 17.5 23.9 -2.0 0.0 9 332 22 46 30 22 56 30 --- 18 07 13 18.4 22.2 -1.9 0.0 600 410 22 46 31 22 57 00 CYG-A 18 07 43 18.4 22.1 -1.9 0.0 9 410 22 57 00 23 07 00 --- 18 17 44 19.2 20.3 -1.7 0.0 600 487 22 57 01 23 07 30 CYG-A 18 18 14 19.3 20.2 -1.7 0.0 9 487 23 07 30 23 17 30 --- 18 28 16 20.0 18.3 -1.5 0.0 600 564 23 07 31 ---------- 5-min gap for pointing ---------- 23 23 30 2013+370 18 34 17 22.5 21.8 -1.7 0.0 325 564 23 23 30 23 28 30 --- 18 39 18 22.9 20.8 -1.6 0.0 300 603 23 23 31 23 30 15 CYG-A 18 41 03 20.8 15.9 -1.3 0.0 70 603 23 30 15 23 40 15 --- 18 51 05 21.4 14.0 -1.2 0.0 600 680 23 30 16 23 40 45 CYG-A 18 51 35 21.4 13.9 -1.1 0.0 9 680 23 40 45 23 50 45 --- 19 01 36 22.0 11.9 -1.0 0.0 600 757 23 40 46 --- Start: Tue 11 Jun 2019 Day 162 -- Stop: Wed 12 Jun 2019 Day 163 --- 23 51 15 CYG-A 19 02 07 22.0 11.8 -1.0 0.0 9 757 23 51 15 00 01 15 --- 19 12 08 22.4 9.8 -0.8 0.0 600 835 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 ---------------------------------------------------------------------------------------- --- Wed 12 Jun 2019 Day 163 --- 00 01 45 CYG-A 19 12 38 22.4 9.7 -0.8 0.0 9 835 00 01 45 00 11 45 --- 19 22 40 22.8 7.7 -0.6 0.0 600 912 00 01 46 00 12 15 CYG-A 19 23 10 22.8 7.6 -0.6 0.0 9 912 00 12 15 00 22 15 --- 19 33 12 23.0 5.5 -0.4 0.0 600 989 00 12 16 00 22 45 CYG-A 19 33 42 23.0 5.4 -0.4 0.0 9 989 00 22 45 00 32 45 --- 19 43 43 23.2 3.4 -0.3 0.0 600 1067 00 22 46 00 33 15 CYG-A 19 44 13 23.2 3.3 -0.3 0.0 9 1067 00 33 15 00 43 15 --- 19 54 15 23.3 1.2 -0.1 0.0 600 1144 00 33 16 ---------- 5-min gap for pointing ---------- 00 50 15 BLLAC 20 01 16 16.1 23.0 -2.0 0.0 332 1144 00 50 15 00 55 15 --- 20 06 17 16.6 22.2 -2.0 0.0 300 1183 00 50 16 00 58 30 CYG-A 20 09 32 23.3 358.1 0.2 0.0 105 1183 00 58 30 01 08 30 --- 20 19 34 23.2 356.0 0.3 0.0 600 1260 00 58 31 01 09 00 CYG-A 20 20 04 23.2 355.9 0.3 0.0 9 1260 01 09 00 01 19 00 --- 20 30 06 23.0 353.9 0.5 0.0 600 1337 01 09 01 01 19 30 CYG-A 20 30 36 23.0 353.7 0.5 0.0 9 1337 01 19 30 01 29 30 --- 20 40 37 22.7 351.7 0.7 0.0 600 1414 01 19 31 01 30 00 CYG-A 20 41 07 22.6 351.6 0.7 0.0 9 1414 01 30 00 01 40 00 --- 20 51 09 22.3 349.6 0.8 0.0 600 1492 01 30 01 01 40 30 CYG-A 20 51 39 22.3 349.5 0.9 0.0 9 1492 01 40 30 01 50 30 --- 21 01 41 21.8 347.5 1.0 0.0 600 1569 01 40 31 01 51 00 CYG-A 21 02 11 21.8 347.4 1.0 0.0 9 1569 01 51 00 02 01 00 --- 21 12 13 21.3 345.4 1.2 0.0 600 1646 01 51 01 02 01 30 CYG-A 21 12 43 21.2 345.4 1.2 0.0 9 1646 02 01 30 02 11 30 --- 21 22 44 20.6 343.4 1.4 0.0 600 1724 02 01 31 ---------- 5-min gap for pointing ---------- 02 21 10 BLLAC 21 32 26 21.4 6.2 -0.5 0.0 492 1724 02 21 10 02 26 10 --- 21 37 27 21.5 5.2 -0.4 0.0 300 1762 02 21 11 02 30 41 CYG-A 21 41 59 19.3 339.8 1.7 0.0 182 1762 02 30 41 02 40 41 --- 21 52 00 18.4 338.0 1.9 0.0 600 1840 02 30 42 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 ---------------------------------------------------------------------------------------- --- Wed 12 Jun 2019 Day 163 --- 02 41 11 CYG-A 21 52 31 18.4 337.9 1.9 0.0 9 1840 02 41 11 02 52 41 --- 22 04 02 17.4 335.9 2.1 0.0 690 1928 02 41 12 02 53 11 CYG-A 22 04 33 17.3 335.8 2.1 0.0 9 1928 02 53 11 03 04 41 --- 22 16 04 16.2 333.8 2.3 0.0 690 2017 02 53 12 03 05 11 CYG-A 22 16 35 16.2 333.8 2.3 0.0 9 2017 03 05 11 03 16 41 --- 22 28 06 15.0 331.9 2.5 0.0 690 2106 03 05 12 03 17 11 CYG-A 22 28 36 15.0 331.8 2.5 0.0 9 2106 03 17 11 03 28 41 --- 22 40 08 13.7 329.9 2.7 0.0 690 2195 03 17 12 03 29 11 CYG-A 22 40 38 13.6 329.9 2.7 0.0 9 2195 03 29 11 03 40 41 --- 22 52 10 12.3 328.1 2.9 0.0 690 2284 03 29 12 03 41 11 CYG-A 22 52 40 12.2 328.0 2.9 0.0 9 2284 03 41 11 03 52 41 --- 23 04 12 10.8 326.3 3.1 0.0 690 2373 03 41 12 03 54 26 2013+370 23 05 58 15.3 326.2 2.8 0.0 70 2373 03 54 26 03 59 56 --- 23 11 29 14.6 325.3 2.9 0.0 330 2415 03 54 27 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: 10 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: 10 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 09.520958 0.80 J1959+4044 40 35 46.36227 * 40 44 02.09608 40 47 06.94085 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 12.734927 0.09 J2015+3710 37 01 44.45878 * 37 10 59.51466 37 14 26.86856 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 31.505028 0.01 J2202+4216 42 02 08.59075 * 42 16 39.97988 42 22 02.13525 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 11 15 + 4.783 583.066 2013+370 sess219.K1024 1 2 3 4 5 6 7 8 9 10 11 15 + 0.258 33.842 BLLAC sess219.K1024 1 2 3 4 5 6 7 8 9 10 11 15 + 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 106.1 2013+370 106.8 BLLAC 87.6 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