COVER INFORMATION Station: ZELENCHK (Code Zc ) 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 ZELENCHK (Code Zc ) 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: 267.49 267.49 267.49 267.49 299.49 299.49 299.49 299.49 331.49 331.49 331.49 331.49 363.49 363.49 363.49 363.49 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 22 02 47 67.3 633.1 2.0 72.2 0 0 02 00 00 02 10 00 --- 22 12 49 65.4 634.6 2.2 71.9 600 77 02 00 01 02 10 30 CYG-A 22 13 19 65.4 634.6 2.2 71.9 24 77 02 10 30 02 20 30 --- 22 23 21 63.6 636.0 2.4 71.5 600 154 02 10 31 02 21 00 CYG-A 22 23 51 63.5 636.1 2.4 71.5 24 154 02 21 00 02 31 00 --- 22 33 52 61.7 637.4 2.6 71.0 600 231 02 21 01 02 31 30 CYG-A 22 34 22 61.6 637.5 2.6 71.0 24 231 02 31 30 02 41 30 --- 22 44 24 59.8 638.7 2.7 70.5 600 308 02 31 31 02 43 00 2013+370 22 45 54 61.1 629.9 2.5 65.1 58 308 02 43 00 02 48 00 --- 22 50 55 60.2 630.8 2.6 65.1 300 346 02 43 01 02 49 30 CYG-A 22 52 25 58.4 639.7 2.9 70.0 58 346 02 49 30 02 59 30 --- 23 02 27 56.6 641.0 3.0 69.4 600 423 02 49 31 03 00 00 CYG-A 23 02 57 56.5 641.0 3.0 69.4 24 423 03 00 00 03 10 00 --- 23 12 59 54.7 642.2 3.2 68.7 600 500 03 00 01 03 10 30 CYG-A 23 13 29 54.6 642.3 3.2 68.7 24 500 03 10 30 03 20 30 --- 23 23 31 52.9 643.5 3.4 68.0 600 577 03 10 31 03 21 00 CYG-A 23 24 01 52.8 643.5 3.4 68.0 24 577 03 21 00 03 31 00 --- 23 34 02 51.0 644.7 3.6 67.2 600 654 03 21 01 03 31 30 CYG-A 23 34 32 50.9 644.8 3.6 67.2 24 654 03 31 30 03 41 30 --- 23 44 34 49.2 645.9 3.7 66.5 600 731 03 31 31 03 42 00 CYG-A 23 45 04 49.1 646.0 3.7 66.4 24 731 03 42 00 03 52 00 --- 23 55 06 47.4 647.1 3.9 65.7 600 808 03 42 01 ---------- 5-min gap for pointing ---------- 03 58 00 2013+370 00 01 07 47.6 641.2 3.7 62.8 332 808 03 58 00 04 03 00 --- 00 06 08 46.7 641.8 3.8 62.6 300 846 03 58 01 Schedule for ZELENCHK (Code Zc ) 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 00 07 53 45.2 648.6 4.1 64.6 77 846 04 04 45 04 14 45 --- 00 17 54 43.5 649.8 4.3 63.8 600 923 04 04 46 04 15 15 CYG-A 00 18 25 43.4 649.8 4.3 63.8 24 923 04 15 15 04 25 15 --- 00 28 26 41.7 651.0 4.5 62.9 600 1000 04 15 16 04 25 45 CYG-A 00 28 56 41.6 651.0 4.5 62.9 24 1000 04 25 45 04 35 45 --- 00 38 58 39.9 652.2 4.6 62.0 600 1077 04 25 46 04 36 15 CYG-A 00 39 28 39.8 652.3 4.7 61.9 24 1077 04 36 15 04 46 15 --- 00 49 30 38.2 653.4 4.8 61.0 600 1154 04 36 16 04 46 45 CYG-A 00 50 00 38.1 653.5 4.8 61.0 24 1154 04 46 45 04 56 45 --- 01 00 01 36.4 654.7 5.0 60.1 600 1231 04 46 46 04 57 15 CYG-A 01 00 31 36.3 654.7 5.0 60.0 24 1231 04 57 15 05 07 15 --- 01 10 33 34.7 655.9 5.2 59.1 600 1308 04 57 16 05 07 45 CYG-A 01 11 03 34.6 656.0 5.2 59.0 24 1308 05 07 45 05 17 45 --- 01 21 05 33.0 657.1 5.3 58.0 600 1385 05 07 46 ---------- 5-min gap for pointing ---------- 05 24 30 BLLAC 01 27 51 53.3 646.0 3.4 69.9 347 1385 05 24 30 05 29 30 --- 01 32 52 52.4 646.6 3.5 69.5 300 1423 05 24 31 05 32 25 CYG-A 01 35 47 30.7 658.9 5.6 56.6 117 1423 05 32 25 05 42 25 --- 01 45 48 29.1 660.1 5.8 55.5 600 1500 05 32 26 05 42 55 CYG-A 01 46 18 29.0 660.2 5.8 55.5 24 1500 05 42 55 05 52 55 --- 01 56 20 27.5 661.4 5.9 54.4 600 1577 05 42 56 05 53 25 CYG-A 01 56 50 27.4 661.5 5.9 54.4 24 1577 05 53 25 06 03 25 --- 02 06 52 25.9 662.8 6.1 53.3 600 1654 05 53 26 06 03 55 CYG-A 02 07 22 25.8 662.8 6.1 53.3 24 1654 06 03 55 06 13 55 --- 02 17 24 24.3 664.1 6.3 52.2 600 1731 06 03 56 06 14 25 CYG-A 02 17 54 24.2 664.2 6.3 52.1 24 1731 06 14 25 06 24 25 --- 02 27 55 22.7 665.4 6.5 51.0 600 1808 06 14 26 06 24 55 CYG-A 02 28 25 22.6 665.5 6.5 50.9 24 1808 06 24 55 06 34 55 --- 02 38 27 21.2 666.8 6.6 49.8 600 1885 06 24 56 Schedule for ZELENCHK (Code Zc ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Jun 2019 Day 162 --- 06 35 25 CYG-A 02 38 57 21.1 666.9 6.6 49.7 24 1885 06 35 25 06 45 25 --- 02 48 59 19.7 668.2 6.8 48.5 600 1962 06 35 26 ---------- 5-min gap for pointing ---------- 06 51 25 2013+370 02 55 00 18.8 664.0 6.6 48.7 335 1962 06 51 25 06 56 25 --- 03 00 01 18.0 664.7 6.7 48.2 300 2000 06 51 26 06 58 10 CYG-A 03 01 46 17.9 669.9 7.0 47.0 80 2000 06 58 10 07 08 10 --- 03 11 47 16.5 671.3 7.2 45.8 600 2077 06 58 11 07 08 40 CYG-A 03 12 18 16.4 671.4 7.2 45.7 24 2077 07 08 40 07 18 40 --- 03 22 19 15.1 672.7 7.4 44.4 600 2154 07 08 41 07 19 10 CYG-A 03 22 49 15.0 672.8 7.4 44.4 24 2154 07 19 10 07 29 10 --- 03 32 51 13.7 674.2 7.5 43.1 600 2231 07 19 11 07 31 10 BLLAC 03 34 51 32.2 660.0 5.5 57.8 68 2231 07 31 10 07 36 10 --- 03 39 52 31.4 660.6 5.6 57.3 300 2269 07 31 11 07 38 00 CYG-A 03 41 42 12.6 675.5 7.7 41.9 58 2269 07 38 00 07 49 30 --- 03 53 14 11.1 677.2 7.9 40.4 690 2358 07 38 01 07 50 00 CYG-A 03 53 44 11.1 677.3 7.9 40.3 24 2358 07 50 00 08 00 00 --- 04 03 46 9.9 678.7 8.1 D 39.0 0 2435 07 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.K1024 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: kvzr_k Added by Des Small, 24 February 2012 Setup group: 2 Station: ZELENCHK Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 21920.00 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 = A B A B A B A B A B A B A B A B 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= 267.49 267.49 267.49 267.49 299.49 299.49 299.49 299.49 331.49 331.49 331.49 331.49 363.49 363.49 363.49 363.49 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 11 12 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 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