COVER INFORMATION Station: ZELENCHK (Code Zc ) 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 ZELENCHK (Code Zc ) 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 16 40 58 65.6 580.0 1.1 30.4 0 0 03 30 00 03 33 00 =1530+239 16 43 59 65.2 581.4 1.2 31.4 180 23 03 30 01 03 33 25 ARP220 16 44 24 65.2 580.3 1.1 30.6 10 23 03 33 25 03 43 25 --- 16 54 26 64.0 584.9 1.3 33.7 600 100 03 33 26 03 43 51 J1532+2344 16 54 52 63.9 586.3 1.4 34.7 10 100 03 43 51 03 46 51 =1530+239 16 57 52 63.5 587.6 1.4 35.6 180 123 03 43 52 03 47 17 ARP220 16 58 18 63.5 586.5 1.4 34.8 11 123 03 47 17 03 57 17 --- 17 08 19 62.2 590.6 1.5 37.4 600 200 03 47 18 03 57 42 J1532+2344 17 08 45 62.0 591.9 1.6 38.3 11 200 03 57 42 04 00 42 =1530+239 17 11 46 61.5 593.0 1.6 39.0 180 223 03 57 43 04 01 08 ARP220 17 12 11 61.6 592.1 1.6 38.4 11 223 04 01 08 04 11 08 --- 17 22 13 60.2 595.7 1.8 40.6 600 300 04 01 09 04 11 33 J1532+2344 17 22 38 59.9 596.9 1.8 41.3 11 300 04 11 33 04 14 33 =1530+239 17 25 39 59.5 597.9 1.9 41.9 180 323 04 11 34 04 14 59 ARP220 17 26 04 59.6 597.1 1.8 41.3 12 323 04 14 59 04 24 59 --- 17 36 06 58.0 600.3 2.0 43.1 600 400 04 15 00 04 25 52 J1516+1932 17 36 59 52.1 601.3 2.3 42.2 27 400 04 25 52 04 27 52 =1514+197 17 39 00 51.8 601.8 2.4 42.5 120 415 04 25 53 04 28 40 J1532+2344 17 39 48 57.3 602.5 2.1 44.3 22 415 04 28 40 04 31 40 =1530+239 17 42 48 56.8 603.4 2.2 44.8 180 438 04 28 41 04 32 05 ARP220 17 43 14 56.9 602.5 2.1 44.3 12 438 04 32 05 04 42 05 --- 17 53 15 55.3 605.5 2.3 45.7 600 515 04 32 06 04 42 31 J1532+2344 17 53 41 55.0 606.5 2.3 46.3 12 515 04 42 31 04 45 31 =1530+239 17 56 42 54.5 607.3 2.4 46.6 180 538 04 42 32 04 45 56 ARP220 17 57 07 54.6 606.5 2.4 46.2 12 538 04 45 56 04 55 56 --- 18 07 09 53.0 609.2 2.5 47.4 600 615 04 45 57 Schedule for ZELENCHK (Code Zc ) 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 18 07 34 52.7 610.1 2.6 47.8 12 615 04 56 22 04 59 22 =1530+239 18 10 35 52.2 610.9 2.6 48.1 180 638 04 56 23 04 59 47 ARP220 18 11 00 52.3 610.2 2.6 47.8 12 638 04 59 47 05 09 47 --- 18 21 02 50.6 612.6 2.8 48.7 600 715 04 59 48 05 10 13 J1532+2344 18 21 28 50.3 613.5 2.8 49.1 13 715 05 10 13 05 13 13 =1530+239 18 24 28 49.8 614.2 2.8 49.3 180 738 05 10 14 05 13 38 ARP220 18 24 54 49.9 613.5 2.8 49.0 13 738 05 13 38 05 23 38 --- 18 34 55 48.2 615.8 3.0 49.7 600 815 05 13 39 05 24 25 J1516+1932 18 35 42 42.3 615.7 3.3 47.9 20 815 05 24 25 05 26 25 =1514+197 18 37 42 41.9 616.1 3.3 48.0 120 831 05 24 26 05 27 10 J1532+2344 18 38 28 47.3 617.4 3.1 50.3 19 831 05 27 10 05 30 10 =1530+239 18 41 28 46.8 618.0 3.1 50.4 180 854 05 27 11 05 30 36 ARP220 18 41 54 47.0 617.4 3.1 50.2 13 854 05 30 36 05 40 36 --- 18 51 56 45.2 619.5 3.3 50.7 600 931 05 30 37 05 41 01 J1532+2344 18 52 21 44.9 620.3 3.3 51.0 13 931 05 41 01 05 44 01 =1530+239 18 55 22 44.3 620.9 3.4 51.1 180 954 05 41 02 05 44 27 ARP220 18 55 47 44.5 620.3 3.3 50.9 13 954 05 44 27 05 54 27 --- 19 05 49 42.7 622.3 3.5 51.2 600 1031 05 44 28 05 54 53 J1532+2344 19 06 15 42.4 623.0 3.5 51.5 13 1031 05 54 53 05 57 53 =1530+239 19 09 15 41.8 623.6 3.6 51.6 180 1054 05 54 54 05 58 18 ARP220 19 09 41 42.0 623.0 3.6 51.4 13 1054 05 58 18 06 08 18 --- 19 19 42 40.2 624.9 3.7 51.6 600 1131 05 58 19 06 08 44 J1532+2344 19 20 08 39.9 625.6 3.8 51.8 13 1131 06 08 44 06 11 44 =1530+239 19 23 09 39.3 626.2 3.8 51.9 180 1154 06 08 45 06 12 09 ARP220 19 23 34 39.5 625.6 3.8 51.7 13 1154 06 12 09 06 22 09 --- 19 33 36 37.7 627.4 4.0 51.8 600 1231 06 12 10 06 22 35 J1532+2344 19 34 01 37.4 628.1 4.0 52.0 14 1231 06 22 35 06 25 35 =1530+239 19 37 02 36.8 628.7 4.1 52.0 180 1254 06 22 36 06 26 00 ARP220 19 37 27 37.0 628.1 4.0 51.9 14 1254 06 26 00 06 36 00 --- 19 47 29 35.2 629.9 4.2 51.9 600 1331 06 26 01 Schedule for ZELENCHK (Code Zc ) Page 4 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 --- 06 36 00 J1516+1932 19 47 29 29.5 629.4 4.5 50.0 -27 1331 No stop 06 37 00 =1514+197 19 48 29 29.3 629.5 4.5 50.0 33 1338 06 36 01 06 37 21 J1516+1932 19 48 51 29.2 629.6 4.5 50.0 16 1338 06 37 14 06 38 21 =1514+197 19 49 51 29.0 629.8 4.5 50.0 60 1347 06 37 15 06 39 12 J1532+2344 19 50 42 34.4 631.0 4.3 52.0 25 1347 06 39 12 06 42 12 =1530+239 19 53 42 33.8 631.6 4.3 52.0 180 1370 06 39 13 06 42 38 ARP220 19 54 08 34.0 631.0 4.3 51.9 14 1370 06 42 38 06 52 38 --- 20 04 09 32.2 632.7 4.5 51.8 600 1447 06 42 39 06 53 04 J1532+2344 20 04 35 31.9 633.4 4.5 51.9 14 1447 06 53 04 06 56 04 =1530+239 20 07 36 31.3 633.9 4.6 51.9 180 1470 06 53 05 06 56 29 ARP220 20 08 01 31.5 633.4 4.5 51.8 14 1470 06 56 29 07 06 29 --- 20 18 03 29.7 635.0 4.7 51.6 600 1547 06 56 30 07 06 55 J1532+2344 20 18 29 29.4 635.7 4.7 51.7 14 1547 07 06 55 07 07 55 =1530+239 20 19 29 29.2 635.8 4.8 51.6 60 1555 07 06 56 07 08 15 J1532+2344 20 19 49 29.1 635.9 4.8 51.6 14 1555 07 08 15 07 10 15 =1530+239 20 21 49 28.8 636.2 4.8 51.6 120 1570 07 08 16 07 10 40 ARP220 20 22 15 28.9 635.7 4.8 51.5 14 1570 07 10 40 07 20 40 --- 20 32 16 27.1 637.3 4.9 51.3 600 1647 07 10 41 07 21 06 J1532+2344 20 32 42 26.8 638.0 5.0 51.3 14 1647 07 21 06 07 24 06 =1530+239 20 35 42 26.3 638.4 5.0 51.2 180 1670 07 21 07 07 24 31 ARP220 20 36 08 26.5 638.0 5.0 51.2 14 1670 07 24 31 07 34 31 --- 20 46 10 24.7 639.6 5.2 50.9 600 1747 07 24 32 07 35 25 J1516+1932 20 47 04 18.8 639.3 5.5 49.1 28 1747 07 35 25 07 36 25 =1514+197 20 48 04 18.6 639.5 5.5 49.0 60 1755 07 35 26 07 36 45 J1516+1932 20 48 24 18.5 639.6 5.5 49.0 14 1755 07 36 45 07 37 45 =1514+197 20 49 25 18.3 639.7 5.5 49.0 60 1763 07 36 46 07 38 38 J1532+2344 20 50 17 23.7 640.8 5.3 50.7 27 1763 07 38 38 07 41 38 =1530+239 20 53 18 23.2 641.2 5.3 50.6 180 1786 07 38 39 07 41 59 ARP220 20 53 39 23.3 640.8 5.3 50.6 9 1786 07 41 59 07 51 59 --- 21 03 40 21.6 642.3 5.5 50.2 600 1863 07 42 00 Schedule for ZELENCHK (Code Zc ) Page 5 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 --- 07 52 20 J1532+2344 21 04 02 21.3 642.9 5.5 50.2 10 1863 07 52 20 07 55 20 =1530+239 21 07 02 20.7 643.4 5.6 50.1 180 1886 07 52 21 07 55 41 ARP220 21 07 23 20.9 642.9 5.5 50.1 9 1886 07 55 41 08 05 41 --- 21 17 25 19.2 644.5 5.7 49.6 600 1963 07 55 42 08 06 02 J1532+2344 21 17 46 18.9 645.1 5.7 49.6 10 1963 08 06 02 08 07 02 =1530+239 21 18 46 18.7 645.2 5.8 49.5 60 1970 08 06 03 08 07 12 J1532+2344 21 18 56 18.7 645.3 5.8 49.5 4 1970 08 07 12 08 09 12 =1530+239 21 20 57 18.3 645.6 5.8 49.4 120 1986 08 07 13 08 09 33 ARP220 21 21 17 18.5 645.1 5.8 49.4 9 1986 08 09 33 08 19 33 --- 21 31 19 16.7 646.7 5.9 48.9 600 2063 08 09 34 08 19 54 J1532+2344 21 31 40 16.5 647.3 6.0 48.8 9 2063 08 19 54 08 22 54 =1530+239 21 34 40 15.9 647.7 6.0 48.7 180 2086 08 19 55 08 23 14 ARP220 21 35 01 16.1 647.3 6.0 48.7 9 2086 08 23 14 08 33 14 --- 21 45 02 14.4 648.9 6.2 48.1 600 2163 08 23 15 08 37 12 J1532+2344 21 49 01 13.5 650.0 6.3 47.8 226 2163 08 37 12 08 40 12 =1530+239 21 52 02 13.0 650.5 6.3 47.6 180 2186 08 37 13 08 40 33 ARP220 21 52 22 13.1 650.0 6.3 47.7 9 2186 08 40 33 08 50 33 --- 22 02 24 11.4 651.6 6.4 47.0 600 2263 08 40 34 08 50 53 J1532+2344 22 02 44 11.2 652.2 6.5 46.9 9 2263 08 50 53 08 53 53 =1530+239 22 05 45 10.7 652.7 6.5 46.7 180 2286 08 50 54 08 54 13 ARP220 22 06 05 10.8 652.2 6.5 46.8 9 2286 08 54 13 09 04 13 --- 22 16 06 9.2 653.8 6.7 D 46.0 0 2363 08 54 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: 14 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= 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