COVER INFORMATION Station: YEBES40M (Code Ys ) Experiment: Does Cygnus A harbor a binary black hole? Exp. Code: EB064B Schedule Version: 2.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 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 B of EB064 at 1.3cm. It involves 13 antennas Jb2, EF, MC, Nt, O60, Ur, Tr, 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 YEBES40M (Code Ys ) 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 ---------------------------------------------------------------------------------------- --- Wed 14 Mar 2018 Day 73 --- 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: 637.49 637.49 637.49 637.49 669.49 669.49 669.49 669.49 701.49 701.49 701.49 701.49 733.49 733.49 733.49 733.49 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 08 00 00 CYG-A 19 15 14 81.5 84.6 -0.7 -88.1 0 0 08 00 00 08 10 00 --- 19 25 15 83.4 84.9 -0.6 -89.4 600 77 08 00 01 08 10 30 CYG-A 19 25 46 83.5 85.0 -0.6 -89.5 15 77 08 10 30 08 20 30 --- 19 35 47 85.4 84.8 -0.4 -91.2 600 155 08 10 31 08 22 00 2013+370 19 37 17 81.8 110.4 -0.6 -63.5 50 155 08 22 00 08 27 00 --- 19 42 18 82.6 113.8 -0.6 -60.8 300 193 08 22 01 08 28 30 CYG-A 19 43 48 86.9 83.9 -0.3 -93.4 45 193 08 28 30 08 38 30 --- 19 53 50 88.8 77.3 -0.1 D -101.7 0 271 08 28 31 09 00 00 CYG-A 20 15 24 87.1 276.3 0.3 93.8 932 271 09 00 00 09 10 00 --- 20 25 25 85.2 635.1 0.4 D 91.0 0 348 09 00 01 09 10 30 CYG-A 20 25 55 85.1 275.1 0.4 90.9 -130 348 09 10 30 09 20 30 --- 20 35 57 83.2 275.1 0.6 89.2 470 425 09 10 31 09 21 00 CYG-A 20 36 27 83.1 275.1 0.6 89.2 15 425 09 21 00 09 31 00 --- 20 46 29 81.2 275.4 0.8 87.9 600 502 09 21 01 ---------- 5-min gap for pointing ---------- 09 37 00 2013+370 20 52 30 82.2 248.0 0.6 62.3 313 502 09 37 00 09 42 00 --- 20 57 31 81.3 251.1 0.7 64.6 300 541 09 37 01 09 43 45 CYG-A 20 59 16 78.8 276.1 1.0 86.5 65 541 09 43 45 09 53 45 --- 21 09 17 76.9 276.8 1.2 85.4 600 618 09 43 46 09 54 15 CYG-A 21 09 48 76.8 276.8 1.2 85.4 15 618 09 54 15 10 04 15 --- 21 19 49 74.9 277.5 1.3 84.4 600 696 09 54 16 10 04 45 CYG-A 21 20 19 74.8 277.5 1.3 84.4 15 696 10 04 45 10 14 45 --- 21 30 21 72.9 278.3 1.5 83.4 600 773 10 04 46 10 15 15 CYG-A 21 30 51 72.8 278.3 1.5 83.4 15 773 10 15 15 10 25 15 --- 21 40 53 70.9 279.0 1.7 82.5 600 850 10 15 16 Schedule for YEBES40M (Code Ys ) 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 14 Mar 2018 Day 73 --- 10 25 45 CYG-A 21 41 23 70.9 279.1 1.7 82.4 15 850 10 25 45 10 35 45 --- 21 51 24 69.0 279.9 1.9 81.5 600 927 10 25 46 10 36 15 CYG-A 21 51 54 68.9 279.9 1.9 81.5 15 927 10 36 15 10 46 15 --- 22 01 56 67.0 280.7 2.0 80.6 600 1005 10 36 16 10 46 45 CYG-A 22 02 26 66.9 280.7 2.0 80.5 15 1005 10 46 45 10 56 45 --- 22 12 28 65.0 281.5 2.2 79.6 600 1082 10 46 46 ---------- 5-min gap for pointing ---------- 11 03 30 BLLAC 22 19 14 86.5 303.1 0.3 120.5 354 1082 11 03 30 11 08 30 --- 22 24 15 85.7 296.9 0.3 113.5 300 1121 11 03 31 11 11 42 CYG-A 22 27 28 62.3 282.8 2.5 78.3 154 1121 11 11 42 11 21 42 --- 22 37 29 60.4 283.6 2.6 77.4 600 1198 11 11 43 11 22 12 CYG-A 22 37 59 60.3 283.6 2.6 77.3 15 1198 11 22 12 11 32 12 --- 22 48 01 58.5 284.5 2.8 76.4 600 1275 11 22 13 11 32 42 CYG-A 22 48 31 58.4 284.5 2.8 76.4 15 1275 11 32 42 11 42 42 --- 22 58 33 56.5 285.4 3.0 75.4 600 1353 11 32 43 11 43 12 CYG-A 22 59 03 56.4 285.4 3.0 75.4 15 1353 11 43 12 11 53 12 --- 23 09 04 54.6 286.3 3.1 74.5 600 1430 11 43 13 11 53 42 CYG-A 23 09 34 54.5 286.3 3.2 74.4 15 1430 11 53 42 12 03 42 --- 23 19 36 52.7 287.2 3.3 73.5 600 1507 11 53 43 12 04 12 CYG-A 23 20 06 52.6 287.3 3.3 73.5 15 1507 12 04 12 12 14 12 --- 23 30 08 50.8 288.2 3.5 72.5 600 1584 12 04 13 12 14 42 CYG-A 23 30 38 50.7 288.2 3.5 72.5 15 1584 12 14 42 12 24 42 --- 23 40 40 48.9 289.1 3.7 71.5 600 1662 12 14 43 ---------- 5-min gap for pointing ---------- 12 30 42 2013+370 23 46 41 49.5 283.0 3.5 68.5 338 1662 12 30 42 12 35 42 --- 23 51 41 48.6 283.6 3.6 68.1 300 1700 12 30 43 12 37 27 CYG-A 23 53 27 46.6 290.3 3.9 70.3 83 1700 12 37 27 12 47 27 --- 00 03 28 44.8 291.2 4.1 69.4 600 1778 12 37 28 12 47 57 CYG-A 00 03 58 44.7 291.3 4.1 69.3 15 1778 12 47 57 12 57 57 --- 00 14 00 43.0 292.2 4.2 68.3 600 1855 12 47 58 Schedule for YEBES40M (Code Ys ) 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 14 Mar 2018 Day 73 --- 12 58 27 CYG-A 00 14 30 42.9 292.3 4.2 68.3 15 1855 12 58 27 13 08 27 --- 00 24 32 41.1 293.2 4.4 67.3 600 1932 12 58 28 13 10 27 BLLAC 00 26 32 63.3 285.9 2.4 81.7 82 1932 13 10 27 13 15 27 --- 00 31 33 62.4 286.2 2.5 81.2 300 1971 13 10 28 13 17 09 CYG-A 00 33 15 39.6 294.1 4.6 66.4 65 1971 13 17 09 13 27 09 --- 00 43 17 37.9 295.1 4.7 65.4 600 2048 13 17 10 13 27 39 CYG-A 00 43 47 37.8 295.1 4.7 65.3 15 2048 13 27 39 13 38 09 --- 00 54 19 36.0 296.2 4.9 64.3 630 2129 13 27 40 13 38 39 CYG-A 00 54 49 35.9 296.2 4.9 64.2 15 2129 13 38 39 13 49 09 --- 01 05 21 34.1 297.3 5.1 63.1 630 2211 13 38 40 13 49 39 CYG-A 01 05 51 34.0 297.4 5.1 63.1 15 2211 13 49 39 14 00 09 --- 01 16 22 32.2 298.5 5.3 61.9 630 2292 13 49 40 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess118.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: 10 Station: YEBES40M 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= 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 21550.00 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 3 11 3 11 5 13 5 13 7 15 7 15 BBC SB= L L U U L L U U L L U U L L U U IF = A4 C4 A4 C4 A4 C4 A4 C4 B4 D4 B4 D4 B4 D4 B4 D4 The following frequency sets based on these setups were used. Frequency Set: 8 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= 637.49 637.49 637.49 637.49 669.49 669.49 669.49 669.49 701.49 701.49 701.49 701.49 733.49 733.49 733.49 733.49 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: 8 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 44.440804 * 19 59 28.356482 20 00 04.789940 0.80 J1959+4044 40 35 46.36249 * 40 44 02.09630 40 46 50.76732 0.53 * CYG-A /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc J1959+40 GSFC 2015a astro solution, unpublished 27 observations. 1957+405 1957+404 * 2013+370 20 13 37.014511 * 20 15 28.729797 20 16 07.932179 0.13 J2015+3710 37 01 44.45895 * 37 10 59.51482 37 14 10.24201 0.18 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 131 observations. VR422201 22 00 39.362505 * 22 02 43.291372 22 03 26.546492 0.00 J2202+4216 42 02 08.59077 * 42 16 39.97990 42 21 46.17784 0.00 * BLLAC /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc 2200+420 GSFC 2015a astro solution, unpublished 51226 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 sess118.K1024 1 2 3 4 5 6 7 8 9 12 13 4.858 277.375 2013+370 sess118.K1024 1 2 3 4 5 6 7 8 9 12 13 0.250 16.750 BLLAC sess118.K1024 1 2 3 4 5 6 7 8 9 12 13 0.167 10.250 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 65.6 2013+370 61.2 BLLAC 49.6 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