COVER INFORMATION Station: BADARY (Code Bd ) Experiment: 6cm global VLBI observations of Arp220 Exp. Code: GV022B Schedule Version: 3.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Eskil Varenius Address: Department of Earth and Space Sciences, Chalmers University of T Onsala Space Observatory 439 92 Onsala Sweden Phone: +46 31 772 55 45 EMAIL: varenius@chalmers.se Fax: +46(0)31 772 5590 Phone during observation: +46 31 772 55 45 Observing mode: 6cm 2Gbps global VLBI with phased C-array VLA Notes: Phase calibrator: J1532+2344 Fringe finder / pol. cal / bandpass cal: J1516+1932 VLA phase-up calibrator: J1516+1932 Schedule for BADARY (Code Bd ) Page 2 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- ---------- pre-VLA block ---------- Next scan frequencies: 4772.25 4772.25 4772.25 4772.25 4836.25 4836.25 4836.25 4836.25 4900.25 4900.25 4900.25 4900.25 4964.25 4964.25 4964.25 4964.25 Next BBC frequencies: 272.25 272.25 272.25 272.25 336.25 336.25 336.25 336.25 400.25 400.25 400.25 400.25 464.25 464.25 464.25 464.25 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 21 00 00 J1516+1932 20 54 43 18.7 278.0 5.6 40.5 0 0 21 00 00 21 03 00 =1514+197 20 57 44 18.2 278.6 5.7 40.5 180 46 21 00 01 21 04 01 J1532+2344 20 58 45 23.7 278.8 5.4 41.9 35 46 21 04 01 21 05 31 =1530+239 21 00 25 23.4 279.1 5.4 41.9 90 69 21 04 02 21 05 57 ARP220 21 00 41 23.5 278.6 5.4 41.8 14 69 21 05 57 21 10 27 --- 21 05 12 22.8 279.4 5.5 41.7 270 138 21 05 58 21 11 02 J1532+2344 21 05 48 22.6 280.1 5.5 41.7 24 138 21 11 02 21 12 32 =1530+239 21 07 28 22.3 280.4 5.6 41.7 90 162 21 11 03 21 12 58 ARP220 21 07 44 22.4 279.9 5.5 41.6 14 162 21 12 58 21 17 28 --- 21 12 14 21.8 280.7 5.6 41.5 270 231 21 12 59 21 18 04 J1532+2344 21 12 50 21.5 281.4 5.7 41.5 24 231 21 18 04 21 19 34 =1530+239 21 14 30 21.3 281.7 5.7 41.4 90 254 21 18 05 21 19 59 ARP220 21 14 46 21.4 281.2 5.7 41.4 14 254 21 19 59 21 24 29 --- 21 19 17 20.7 282.0 5.7 41.3 270 323 21 20 00 21 25 05 J1532+2344 21 19 53 20.4 282.7 5.8 41.2 24 323 21 25 05 21 26 35 =1530+239 21 21 33 20.2 283.0 5.8 41.2 90 346 21 25 06 21 27 01 ARP220 21 21 48 20.3 282.5 5.8 41.2 14 346 21 27 01 21 31 31 --- 21 26 19 19.6 283.3 5.8 41.0 270 415 21 27 02 21 32 06 J1532+2344 21 26 55 19.4 284.0 5.9 41.0 24 415 21 32 06 21 33 36 =1530+239 21 28 35 19.1 284.3 5.9 40.9 90 438 21 32 07 21 34 02 ARP220 21 28 51 19.2 283.8 5.9 40.9 14 438 21 34 02 21 38 32 --- 21 33 22 18.6 284.6 6.0 40.8 270 508 21 34 03 21 39 08 J1532+2344 21 33 57 18.3 285.3 6.0 40.7 24 508 21 39 08 21 40 38 =1530+239 21 35 38 18.1 285.6 6.0 40.6 90 531 21 39 09 Schedule for BADARY (Code Bd ) Page 3 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- 21 41 03 ARP220 21 35 53 18.2 285.1 6.0 40.6 14 531 21 41 03 21 45 33 --- 21 40 24 17.5 285.9 6.1 40.4 270 600 21 41 04 21 46 09 J1532+2344 21 41 00 17.3 286.5 6.1 40.4 24 600 21 46 09 21 47 39 =1530+239 21 42 40 17.0 286.9 6.2 40.3 90 623 21 46 10 21 48 05 ARP220 21 42 56 17.1 286.3 6.1 40.3 14 623 21 48 05 21 52 35 --- 21 47 27 16.5 287.2 6.2 40.1 270 692 21 48 06 ---------- 2nd rpt7 (6+1) + rpt5 (1+2+2) ---------- 21 53 36 J1516+1932 21 48 28 10.6 288.1 6.5 38.6 35 692 21 53 36 21 56 26 =1514+197 21 51 29 10.2 288.7 6.6 38.5 170 736 21 53 37 21 57 23 J1532+2344 21 52 16 15.6 288.6 6.3 39.8 31 736 21 57 23 21 58 53 =1530+239 21 53 56 15.4 288.9 6.3 39.7 90 759 21 57 24 21 59 18 ARP220 21 54 11 15.5 288.4 6.3 39.8 14 759 21 59 18 22 03 18 --- 21 58 12 14.9 289.1 6.4 39.6 240 821 21 59 19 22 03 54 J1532+2344 21 58 48 14.7 289.8 6.4 39.5 24 821 22 03 54 22 05 24 =1530+239 22 00 28 14.4 290.1 6.4 39.4 90 844 22 03 55 22 05 50 ARP220 22 00 44 14.5 289.6 6.4 39.5 14 844 22 05 50 22 09 50 --- 22 04 44 13.9 290.3 6.5 39.2 240 905 22 05 51 22 10 25 J1532+2344 22 05 20 13.7 291.0 6.5 39.1 24 905 22 10 25 22 11 55 =1530+239 22 07 01 13.5 291.3 6.6 39.0 90 928 22 10 26 22 12 21 ARP220 22 07 16 13.6 290.8 6.5 39.1 14 928 22 12 21 22 16 21 --- 22 11 17 13.0 291.5 6.6 38.9 240 990 22 12 22 22 16 57 J1532+2344 22 11 53 12.8 292.2 6.6 38.7 24 990 22 16 57 22 18 27 =1530+239 22 13 33 12.5 292.5 6.7 38.6 90 1013 22 16 58 22 18 52 ARP220 22 13 49 12.6 292.0 6.6 38.7 14 1013 22 18 52 22 22 52 --- 22 17 49 12.1 292.7 6.7 38.5 240 1074 22 18 53 22 23 28 J1532+2344 22 18 25 11.8 293.4 6.7 38.3 24 1074 22 23 28 22 24 58 =1530+239 22 20 05 11.6 293.7 6.8 38.2 90 1097 22 23 29 22 25 23 ARP220 22 20 21 11.7 293.2 6.7 38.3 14 1097 22 25 23 22 29 23 --- 22 24 22 11.1 293.9 6.8 38.1 240 1159 22 25 24 Schedule for BADARY (Code Bd ) Page 4 6cm global VLBI observations of Arp220 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 7 Jun 2017 Day 158 --- 22 29 59 J1532+2344 22 24 57 10.9 294.6 6.9 37.9 24 1159 22 29 59 22 31 29 =1530+239 22 26 38 10.7 294.9 6.9 37.8 90 1182 22 30 00 22 31 55 ARP220 22 26 53 10.8 294.4 6.9 37.9 14 1182 22 31 55 22 35 55 --- 22 30 54 10.2 295.1 6.9 37.6 240 1244 22 31 56 22 36 30 J1532+2344 22 31 30 10.0 295.8 7.0 37.5 24 1244 22 36 30 22 38 00 =1530+239 22 33 10 9.8 296.1 7.0 D 37.4 0 1267 22 36 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess217.C2048glob Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 15 Station: BADARY Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 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= 4772.25 4772.25 4772.25 4772.25 4836.25 4836.25 4836.25 4836.25 4900.25 4900.25 4900.25 4900.25 4964.25 4964.25 4964.25 4964.25 BBC fr= 272.25 272.25 272.25 272.25 336.25 336.25 336.25 336.25 400.25 400.25 400.25 400.25 464.25 464.25 464.25 464.25 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 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) * ARP220 15 32 46.905485 * 15 34 57.250000 15 35 43.359734 0.00 23 40 07.75728 * 23 30 11.33000 23 26 55.86293 0.00 From catalog imbedded in main SCHED input file. Pos. from Batejat. et al 2011 * 3C286 13 28 49.657758 * 13 31 08.288051 13 31 56.602521 0.18 J1331+3030 30 45 58.64059 * 30 30 32.95924 30 25 24.79116 0.17 1328+307 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc J1331+30 GSFC 2015a astro solution, unpublished 225 observations. 1514+197 15 14 40.985840 * 15 16 56.796162 15 17 44.720916 0.01 * J1516+1932 19 43 10.94252 * 19 32 12.99209 19 28 35.77580 0.02 J1516+19 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 2699 observations. 1530+239 15 30 36.092767 * 15 32 46.345222 15 33 32.415948 0.10 * J1532+2344 23 54 09.32921 * 23 44 05.26804 23 40 47.21139 0.17 /home/guest/rmc/SCHED/sched11.4/catalogs/sources.gsfc GSFC 2015a astro solution, unpublished 90 observations. 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 ARP220 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 6.750 962.311 3C286 sess217.C2048glob 22 0.067 0.000 J1516+1932 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 1.456 115.850 J1532+2344 sess217.C2048glob 1 2 3 4 5 6 7 8 9 10 13 15 + 2.541 356.089 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) ARP220 128.8 3C286 106.0 J1516+1932 130.1 J1532+2344 128.3 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