COVER INFORMATION Station: BADARY (Code Bd ) Experiment: 18cm global VLBI observations of Arp220 Exp. Code: GV022A Schedule Version: 5.00 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: 18cm 2Gbps global VLBI with phased D-array VLA Notes: Phase calibrator : J1532+2344 Fringe finder / pol. cal / bandpass cal : J1516+1932 VLA phase-up calibrator: J1520+2016 (3C318) Schedule for BADARY (Code Bd ) Page 2 18cm 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 ---------------------------------------------------------------------------------------- --- Sun 26 Feb 2017 Day 57 --- Next scan frequencies: 1584.25 1584.25 1584.25 1584.25 1616.25 1616.25 1616.25 1616.25 1648.25 1648.25 1648.25 1648.25 1680.25 1680.25 1680.25 1680.25 Next BBC frequencies: 324.25 324.25 324.25 324.25 356.25 356.25 356.25 356.25 388.25 388.25 388.25 388.25 420.25 420.25 420.25 420.25 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 03 30 00 J1532+2344 20 43 39 26.0 635.9 5.2 42.2 0 0 03 30 00 03 33 00 =1530+239 20 46 39 25.5 636.5 5.2 42.2 180 23 03 30 01 03 33 25 ARP220 20 47 05 25.6 636.0 5.2 42.1 14 23 03 33 25 03 43 25 --- 20 57 06 24.1 637.9 5.4 41.9 600 100 03 33 26 03 43 51 J1532+2344 20 57 32 23.8 638.6 5.4 41.9 14 100 03 43 51 03 46 51 =1530+239 21 00 33 23.4 639.1 5.5 41.8 180 123 03 43 52 03 47 17 ARP220 21 00 58 23.5 638.6 5.4 41.8 14 123 03 47 17 03 57 17 --- 21 11 00 21.9 640.5 5.6 41.5 600 200 03 47 18 03 57 42 J1532+2344 21 11 26 21.7 641.1 5.6 41.5 14 200 03 57 42 04 00 42 =1530+239 21 14 26 21.3 641.7 5.7 41.4 180 223 03 57 43 04 01 08 ARP220 21 14 52 21.4 641.2 5.7 41.4 14 223 04 01 08 04 11 08 --- 21 24 53 19.8 643.0 5.8 41.1 600 300 04 01 09 04 11 33 J1532+2344 21 25 19 19.6 643.7 5.9 41.0 14 300 04 11 33 04 14 33 =1530+239 21 28 19 19.2 644.2 5.9 40.9 180 323 04 11 34 04 14 59 ARP220 21 28 45 19.3 643.7 5.9 40.9 14 323 04 14 59 04 24 59 --- 21 38 47 17.8 645.6 6.1 40.5 600 400 04 15 00 04 25 52 J1516+1932 21 39 40 11.9 646.4 6.4 39.0 27 400 04 25 52 04 27 52 =1514+197 21 41 40 11.6 646.8 6.4 38.9 120 415 04 25 53 04 28 40 J1532+2344 21 42 28 17.1 646.8 6.1 40.3 22 415 04 28 40 04 31 40 =1530+239 21 45 29 16.6 647.4 6.2 40.2 180 438 04 28 41 04 32 05 ARP220 21 45 54 16.7 646.9 6.2 40.2 14 438 04 32 05 04 42 05 --- 21 55 56 15.2 648.7 6.3 39.7 600 515 04 32 06 04 42 31 J1532+2344 21 56 22 15.0 649.4 6.4 39.6 14 515 04 42 31 04 45 31 =1530+239 21 59 22 14.6 649.9 6.4 39.4 180 538 04 42 32 04 45 56 ARP220 21 59 48 14.7 649.4 6.4 39.5 14 538 04 45 56 04 55 56 --- 22 09 49 13.2 651.3 6.6 38.9 600 615 04 45 57 Schedule for BADARY (Code Bd ) Page 3 18cm 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 ---------------------------------------------------------------------------------------- --- Sun 26 Feb 2017 Day 57 --- 04 56 22 J1532+2344 22 10 15 13.0 651.9 6.6 38.8 14 615 04 56 22 04 59 22 =1530+239 22 13 15 12.6 652.4 6.7 38.6 180 638 04 56 23 04 59 47 ARP220 22 13 41 12.6 652.0 6.6 38.7 14 638 04 59 47 05 09 47 --- 22 23 43 11.2 653.8 6.8 38.1 600 715 04 59 48 05 10 13 J1532+2344 22 24 08 11.0 654.4 6.8 38.0 14 715 05 10 13 05 13 13 =1530+239 22 27 09 10.6 655.0 6.9 37.8 180 738 05 10 14 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess117.L2048glob Matching groups in /home/guest/rmc/SCHED/sched11.4/catalogs/freq_RDBE.dat: kvzr_l passed by Alexey Melnikov, Mar2014 Setup group: 15 Station: BADARY 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= 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 1260.00 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: 8 Setup file default. Used with PCAL = off LO sum= 1584.25 1584.25 1584.25 1584.25 1616.25 1616.25 1616.25 1616.25 1648.25 1648.25 1648.25 1648.25 1680.25 1680.25 1680.25 1680.25 BBC fr= 324.25 324.25 324.25 324.25 356.25 356.25 356.25 356.25 388.25 388.25 388.25 388.25 420.25 420.25 420.25 420.25 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 9 10 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) * 3C318 15 17 50.628003 * 15 20 05.489700 15 20 51.619460 0.00 20 26 53.10030 * 20 16 05.61100 20 12 19.37298 0.00 From catalog imbedded in main SCHED input file. Pos. from https://science.nrao.edu/facilities/vla/observing/callist#R15 * ARP220 15 32 46.905485 * 15 34 57.250000 15 35 41.749984 0.00 23 40 07.75728 * 23 30 11.33000 23 26 41.88094 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 56.137992 0.18 J1331+3030 30 45 58.64059 * 30 30 32.95924 30 25 07.99101 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 43.268587 0.01 * J1516+1932 19 43 10.94252 * 19 32 12.99209 19 28 23.33097 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 30.823776 0.10 * J1532+2344 23 54 09.32921 * 23 44 05.26804 23 40 33.11927 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. 'Core' scans are those for which PREEMPT is not 'EXTRA'. The 'DOSCANS' columns are for scans in the range selected by DOSCANS Those are the scans sent to the Vex and other files Source Setup file Frequency sets Core scans (Hours) DOSCANS (duplicates not shown) Scan Baseline Scan Baseline 3C318 sess117.L2048glob 12 18 0.350 0.917 0.433 0.917 ARP220 sess117.L2048glob 1 2 3 4 5 6 7 8 11 12 18 23 8.331 866.845 9.606 914.411 3C286 sess117.L2048glob 18 0.083 0.000 0.083 0.000 J1516+1932 sess117.L2048glob 1 2 3 4 5 6 7 8 11 12 18 23 0.367 34.836 0.433 36.969 J1532+2344 sess117.L2048glob 1 2 3 4 5 6 7 8 11 12 18 23 2.467 256.869 2.917 272.768 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) 3C318 111.1 ARP220 107.8 3C286 134.1 J1516+1932 111.9 J1532+2344 108.3 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