COVER INFORMATION Station: TIANMA65 (Code T6 ) 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 TIANMA65 (Code T6 ) 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 ---------------------------------------------------------------------------------------- --- Thu 8 Jun 2017 Day 159 --- 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: 572.25 572.25 572.25 572.25 636.25 636.25 636.25 636.25 700.25 700.25 700.25 700.25 764.25 764.25 764.25 764.25 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 08 01 58 J1532+2344 09 14 07 8.1 67.2 -6.3 -59.5 0 0 08 01 58 08 03 28 =1530+239 09 15 47 8.4 67.4 -6.3 -59.7 90 23 08 01 59 08 03 38 ARP220 09 15 47 7.9 67.3 -6.3 -59.5 5 23 No stop 08 07 38 --- 09 19 47 8.7 67.8 -6.3 -59.8 240 87 08 03 29 08 08 13 J1516+1932 09 20 22 10.5 73.5 -6.0 -60.5 22 87 08 08 13 08 09 13 =1514+197 09 21 32 10.7 73.6 -5.9 -60.6 60 102 08 08 14 08 09 29 J1516+1932 09 21 39 10.7 73.6 -5.9 -60.6 15 102 08 09 29 08 11 19 =1514+197 09 23 40 11.1 73.8 -5.9 -60.7 110 131 08 09 30 08 11 58 J1532+2344 09 24 08 10.1 68.3 -6.2 -60.3 25 131 08 11 58 08 13 28 =1530+239 09 25 48 10.4 68.5 -6.1 -60.5 90 154 08 11 59 08 13 37 ARP220 09 25 48 9.9 68.5 -6.2 -60.3 5 154 No stop 08 17 37 --- 09 29 49 10.7 68.9 -6.1 -60.6 240 218 08 13 29 08 17 57 J1532+2344 09 30 09 11.3 69.0 -6.1 -60.8 16 218 08 17 57 08 19 27 =1530+239 09 31 49 11.6 69.2 -6.0 -61.0 90 241 08 17 58 08 19 38 ARP220 09 31 49 11.1 69.2 -6.1 -60.7 6 241 08 19 38 08 23 38 --- 09 35 50 11.9 69.6 -6.0 -61.1 240 302 08 19 39 08 23 58 J1532+2344 09 36 11 12.5 69.7 -6.0 -61.3 16 302 08 23 58 08 25 24 =1530+239 09 37 47 12.8 69.9 -5.9 -61.4 86 324 08 23 59 08 25 35 ARP220 09 37 48 12.3 69.9 -6.0 -61.2 7 324 08 25 35 08 29 05 --- 09 41 18 13.0 70.3 -5.9 -61.5 210 378 08 25 36 08 29 26 J1532+2344 09 41 40 13.6 70.3 -5.9 -61.7 17 378 08 29 26 08 30 51 =1530+239 09 43 15 13.9 70.5 -5.8 -61.8 85 400 08 29 27 08 31 03 ARP220 09 43 16 13.4 70.5 -5.9 -61.6 7 400 08 31 03 08 34 33 --- 09 46 47 14.1 70.9 -5.8 -61.9 210 454 08 31 04 08 34 55 J1532+2344 09 47 09 14.7 70.9 -5.8 -62.1 18 454 08 34 55 08 36 20 =1530+239 09 48 45 15.0 71.1 -5.7 -62.2 85 476 08 34 56 Schedule for TIANMA65 (Code T6 ) 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 ---------------------------------------------------------------------------------------- --- Thu 8 Jun 2017 Day 159 --- 08 36 33 ARP220 09 48 47 14.5 71.1 -5.8 -62.0 8 476 08 36 33 08 40 03 --- 09 52 18 15.2 71.5 -5.7 -62.3 210 529 08 36 34 08 43 01 J1516+1932 09 55 16 17.7 77.5 -5.4 -62.5 165 529 08 43 01 08 44 01 =1514+197 09 56 26 17.9 77.6 -5.4 -62.5 60 545 08 43 02 08 44 18 J1516+1932 09 56 33 18.0 77.6 -5.4 -62.5 15 545 08 44 18 08 46 08 =1514+197 09 58 34 18.4 77.9 -5.3 -62.6 110 573 08 44 19 08 47 32 J1532+2344 09 59 48 17.3 72.3 -5.6 -63.0 71 573 08 47 32 08 48 57 =1530+239 10 01 23 17.6 72.5 -5.5 -63.1 85 595 08 47 33 08 49 10 ARP220 10 01 26 17.1 72.5 -5.6 -62.9 9 595 08 49 10 08 52 40 --- 10 04 57 17.8 72.9 -5.5 -63.1 210 649 08 49 11 08 53 03 J1532+2344 10 05 20 18.4 72.9 -5.5 -63.4 18 649 08 53 03 08 54 28 =1530+239 10 06 55 18.7 73.1 -5.4 -63.5 85 671 08 53 04 08 54 40 ARP220 10 06 57 18.2 73.1 -5.5 -63.3 8 671 08 54 40 08 58 10 --- 10 10 27 18.9 73.5 -5.4 -63.5 210 724 08 54 41 08 58 30 J1532+2344 10 10 48 19.5 73.5 -5.4 -63.7 17 724 08 58 30 09 00 00 =1530+239 10 12 29 19.9 73.7 -5.4 -63.8 90 747 08 58 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 --- 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: 23 Station: TIANMA65 Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 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 = A2 C1 A2 C1 A2 C1 A2 C1 B2 D1 B2 D1 B2 D1 B2 D1 The following frequency sets based on these setups were used. Frequency Set: 26 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= 572.25 572.25 572.25 572.25 636.25 636.25 636.25 636.25 700.25 700.25 700.25 700.25 764.25 764.25 764.25 764.25 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: 26 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