COVER INFORMATION Station: URUMQI (Code Ur ) 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 URUMQI (Code Ur ) 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: 4884.25 4884.25 4884.25 4884.25 4916.25 4916.25 4916.25 4916.25 4948.25 4948.25 4948.25 4948.25 4980.25 4980.25 4980.25 4980.25 Next BBC frequencies: 264.25 264.25 264.25 264.25 296.25 296.25 296.25 296.25 328.25 328.25 328.25 328.25 360.25 360.25 360.25 360.25 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 21 00 00 J1516+1932 19 54 30 28.2 270.7 4.6 50.3 0 0 21 00 00 21 03 00 =1514+197 19 57 31 27.6 271.3 4.7 50.3 180 23 21 00 04 21 04 01 J1532+2344 19 58 32 33.0 272.6 4.4 52.3 47 23 21 04 01 21 05 31 =1530+239 20 00 12 32.7 272.9 4.4 52.3 90 35 21 04 05 21 05 57 ARP220 20 00 28 32.9 272.3 4.4 52.2 21 35 21 05 57 21 10 27 --- 20 04 58 32.0 273.1 4.5 52.2 270 69 21 06 01 21 11 02 J1532+2344 20 05 34 31.7 273.7 4.5 52.3 32 69 21 11 02 21 12 32 =1530+239 20 07 15 31.4 274.0 4.6 52.2 90 81 21 11 06 21 12 58 ARP220 20 07 30 31.6 273.5 4.5 52.1 21 81 21 12 58 21 17 28 --- 20 12 01 30.8 274.2 4.6 52.1 270 115 21 13 02 21 18 04 J1532+2344 20 12 37 30.4 274.9 4.7 52.1 32 115 21 18 04 21 19 34 =1530+239 20 14 17 30.1 275.2 4.7 52.1 90 127 21 18 08 21 19 59 ARP220 20 14 33 30.3 274.6 4.6 52.0 21 127 21 19 59 21 24 29 --- 20 19 03 29.5 275.4 4.7 52.0 270 162 21 20 03 21 25 05 J1532+2344 20 19 39 29.1 276.0 4.8 52.0 32 162 21 25 05 21 26 35 =1530+239 20 21 19 28.8 276.3 4.8 52.0 90 173 21 25 09 21 27 01 ARP220 20 21 35 29.0 275.8 4.8 51.9 21 173 21 27 01 21 31 31 --- 20 26 06 28.2 276.5 4.8 51.8 270 208 21 27 05 21 32 06 J1532+2344 20 26 42 27.9 277.2 4.9 51.8 32 208 21 32 06 21 33 36 =1530+239 20 28 22 27.6 277.4 4.9 51.8 90 219 21 32 10 21 34 02 ARP220 20 28 38 27.8 276.9 4.9 51.7 21 219 21 34 02 21 38 32 --- 20 33 08 27.0 277.6 5.0 51.6 270 254 21 34 06 21 39 08 J1532+2344 20 33 44 26.6 278.3 5.0 51.6 32 254 21 39 08 21 40 38 =1530+239 20 35 24 26.3 278.6 5.0 51.6 90 265 21 39 12 Schedule for URUMQI (Code Ur ) 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 20 35 40 26.5 278.0 5.0 51.6 21 265 21 41 03 21 45 33 --- 20 40 11 25.7 278.8 5.1 51.4 270 300 21 41 07 21 46 09 J1532+2344 20 40 46 25.3 279.4 5.1 51.4 32 300 21 46 09 21 47 39 =1530+239 20 42 27 25.0 279.7 5.1 51.4 90 312 21 46 13 21 48 05 ARP220 20 42 42 25.2 279.2 5.1 51.3 22 312 21 48 05 21 52 35 --- 20 47 13 24.4 279.9 5.2 51.2 270 346 21 48 09 ---------- 2nd rpt7 (6+1) + rpt5 (1+2+2) ---------- 21 53 36 J1516+1932 20 48 15 18.5 279.6 5.5 49.4 47 346 21 53 36 21 56 26 =1514+197 20 51 15 18.0 280.1 5.6 49.3 170 368 21 53 40 21 57 23 J1532+2344 20 52 02 23.3 281.2 5.3 51.0 43 368 21 57 23 21 58 53 =1530+239 20 53 42 23.0 281.4 5.3 51.0 90 379 21 57 27 21 59 18 ARP220 20 53 58 23.2 280.9 5.3 51.0 22 379 21 59 18 22 03 18 --- 20 57 59 22.5 281.6 5.4 50.8 240 410 21 59 22 22 03 54 J1532+2344 20 58 35 22.2 282.2 5.4 50.8 32 410 22 03 54 22 05 24 =1530+239 21 00 15 21.9 282.5 5.4 50.7 90 422 22 03 58 22 05 50 ARP220 21 00 30 22.1 282.0 5.4 50.7 22 422 22 05 50 22 09 50 --- 21 04 31 21.4 282.6 5.5 50.5 240 453 22 05 54 22 10 25 J1532+2344 21 05 07 21.0 283.2 5.5 50.5 32 453 22 10 25 22 11 55 =1530+239 21 06 47 20.7 283.5 5.6 50.4 90 464 22 10 29 22 12 21 ARP220 21 07 03 20.9 283.0 5.5 50.4 22 464 22 12 21 22 16 21 --- 21 11 03 20.2 283.6 5.6 50.2 240 495 22 12 25 22 16 57 J1532+2344 21 11 39 19.9 284.2 5.6 50.2 32 495 22 16 57 22 18 27 =1530+239 21 13 20 19.6 284.5 5.7 50.1 90 506 22 17 01 22 18 52 ARP220 21 13 35 19.8 284.0 5.6 50.1 22 506 22 18 52 22 22 52 --- 21 17 36 19.0 284.6 5.7 49.9 240 537 22 18 56 22 23 28 J1532+2344 21 18 12 18.7 285.3 5.7 49.9 32 537 22 23 28 22 24 58 =1530+239 21 19 52 18.4 285.5 5.8 49.8 90 549 22 23 32 22 25 23 ARP220 21 20 08 18.6 285.0 5.7 49.8 22 549 22 25 23 22 29 23 --- 21 24 08 17.9 285.7 5.8 49.6 240 579 22 25 27 Schedule for URUMQI (Code Ur ) 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 21 24 44 17.6 286.3 5.9 49.5 32 579 22 29 59 22 31 29 =1530+239 21 26 24 17.3 286.5 5.9 49.4 90 591 22 30 03 22 31 55 ARP220 21 26 40 17.5 286.1 5.8 49.5 22 591 22 31 55 22 35 55 --- 21 30 41 16.8 286.7 5.9 49.3 240 622 22 31 59 22 36 30 J1532+2344 21 31 16 16.4 287.3 6.0 49.2 32 622 22 36 30 22 38 00 =1530+239 21 32 57 16.1 287.6 6.0 49.1 90 633 22 36 34 22 38 26 ARP220 21 33 12 16.3 287.1 6.0 49.1 22 633 22 38 26 22 42 26 --- 21 37 13 15.6 287.7 6.0 48.9 240 664 22 38 30 22 43 02 J1532+2344 21 37 49 15.3 288.3 6.1 48.8 32 664 22 43 02 22 44 32 =1530+239 21 39 29 15.0 288.6 6.1 48.7 90 676 22 43 06 22 44 57 ARP220 21 39 45 15.2 288.1 6.1 48.8 22 676 22 44 57 22 48 57 --- 21 43 45 14.5 288.7 6.1 48.5 240 706 22 45 01 22 49 33 J1532+2344 21 44 21 14.2 289.3 6.2 48.4 32 706 22 49 33 22 51 03 =1530+239 21 46 01 13.9 289.6 6.2 48.3 90 718 22 49 37 22 51 29 ARP220 21 46 17 14.1 289.1 6.2 48.4 22 718 22 51 29 22 55 29 --- 21 50 18 13.4 289.8 6.2 48.1 240 749 22 51 33 22 56 04 J1532+2344 21 50 53 13.1 290.4 6.3 48.0 32 749 22 56 04 22 57 34 =1530+239 21 52 34 12.8 290.6 6.3 47.9 90 760 22 56 08 22 58 00 ARP220 21 52 49 13.0 290.2 6.3 48.0 22 760 22 58 00 23 02 00 --- 21 56 50 12.3 290.8 6.4 47.7 240 791 22 58 04 23 02 36 J1532+2344 21 57 26 12.0 291.4 6.4 47.5 32 791 23 02 36 23 04 06 =1530+239 21 59 06 11.7 291.7 6.4 47.4 90 803 23 02 40 23 04 31 ARP220 21 59 22 11.8 291.2 6.4 47.5 22 803 23 04 31 23 08 31 --- 22 03 22 11.2 291.8 6.5 47.3 240 833 23 04 35 23 09 07 J1532+2344 22 03 58 10.9 292.4 6.5 47.1 32 833 23 09 07 23 10 37 =1530+239 22 05 38 10.6 292.7 6.5 47.0 90 845 23 09 11 23 11 03 ARP220 22 05 54 10.7 292.2 6.5 47.1 22 845 23 11 03 23 15 03 --- 22 09 55 10.1 292.9 6.6 46.8 240 876 23 11 07 23 19 38 J1532+2344 22 14 31 9.1 294.1 6.7 46.3 272 876 23 19 38 23 21 08 =1530+239 22 16 12 8.8 294.4 6.7 46.2 90 887 23 19 42 Schedule for URUMQI (Code Ur ) Page 5 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 --- 23 21 34 ARP220 22 16 27 9.0 293.9 6.7 46.3 22 887 23 21 34 23 25 34 --- 22 20 28 8.3 294.6 6.7 46.0 240 918 23 21 38 23 26 10 J1532+2344 22 21 04 8.0 295.2 6.8 45.8 32 918 23 26 10 23 27 40 =1530+239 22 22 44 7.7 295.4 6.8 45.7 90 929 23 26 14 23 28 05 ARP220 22 23 00 7.9 295.0 6.8 45.8 22 929 23 28 05 23 32 05 --- 22 27 00 7.2 295.6 6.9 45.5 240 960 23 28 09 ---------- 2nd post-VLA block ---------- 23 32 41 J1532+2344 22 27 36 6.9 296.2 6.9 45.3 32 960 23 32 41 23 34 11 =1530+239 22 29 16 6.7 296.5 6.9 45.2 90 972 23 32 45 23 34 37 ARP220 22 29 32 6.8 296.0 6.9 45.3 22 972 23 34 37 23 38 37 --- 22 33 33 6.2 296.7 7.0 45.0 240 1003 23 34 41 23 39 12 J1532+2344 22 34 08 5.9 297.3 7.0 44.8 32 1003 23 39 12 23 40 32 =1530+239 22 35 39 5.6 297.5 7.0 44.6 80 1013 23 39 16 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: ur6cm Setup group: 12 Station: URUMQI 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= 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 4620.00 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 = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 7 Setup file default. Used with PCAL = off LO sum= 4884.25 4884.25 4884.25 4884.25 4916.25 4916.25 4916.25 4916.25 4948.25 4948.25 4948.25 4948.25 4980.25 4980.25 4980.25 4980.25 BBC fr= 264.25 264.25 264.25 264.25 296.25 296.25 296.25 296.25 328.25 328.25 328.25 328.25 360.25 360.25 360.25 360.25 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: 7 Track assignments are: track1= 20, 18, 4, 2, 24, 22, 8, 6, 28, 26, 12, 10, 32, 30, 16, 14 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