COVER INFORMATION Station: KUNMING (Code Km ) Experiment: 3.6cm global VLBI observations of Arp220 Exp. Code: GV023 Schedule Version: 2.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Eskil Varenius Address: Jodrell Bank Observatory, The University of Manchester Lower Withington, Macclesfield Cheshire, SK11 9DL UK Phone: +46706755341 EMAIL: eskil.varenius@manchester.ac.uk Fax: Phone during observation: +46706755341 Observing mode: 3.6cm 2Gbps global VLBI (EVN+VLBA) Notes: Phase calibrator: J1532+2344 Fringe finder / pol. cal / bandpass cal: J1516+1932 Schedule for KUNMING (Code Km ) Page 2 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 ---------------------------------------------------------------------------------------- --- Fri 20 Oct 2017 Day 293 --- Next scan frequencies: 8272.00 8272.00 8272.00 8272.00 8336.00 8336.00 8336.00 8336.00 8400.00 8400.00 8400.00 8400.00 8464.00 8464.00 8464.00 8464.00 Next BBC frequencies: 172.00 172.00 172.00 172.00 236.00 236.00 236.00 236.00 300.00 300.00 300.00 300.00 364.00 364.00 364.00 364.00 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 12 00 00 J1516+1932 20 47 45 14.6 -75.0 5.5 68.2 0 0 12 00 00 12 03 00 =1514+197 20 50 45 14.0 -74.7 5.6 68.0 180 46 12 00 01 12 04 01 J1532+2344 20 51 47 18.7 -71.9 5.3 70.2 50 46 12 04 01 12 05 51 =1530+239 20 53 47 18.2 -71.8 5.3 70.0 110 74 12 04 02 12 06 17 ARP220 20 54 03 18.6 -72.2 5.3 70.1 21 74 12 06 17 12 10 17 --- 20 58 03 17.7 -71.8 5.4 69.8 240 136 12 06 18 12 10 53 J1532+2344 20 58 39 17.2 -71.4 5.4 69.6 31 136 12 10 53 12 12 43 =1530+239 21 00 39 16.8 -71.2 5.5 69.5 110 164 12 10 54 12 13 08 ARP220 21 00 55 17.1 -71.6 5.4 69.6 21 164 12 13 08 12 17 08 --- 21 04 56 16.2 -71.2 5.5 69.3 240 226 12 13 09 12 17 44 J1532+2344 21 05 31 15.7 -70.8 5.5 69.1 31 226 12 17 44 12 19 34 =1530+239 21 07 32 15.3 -70.6 5.6 69.0 110 254 12 17 45 12 20 00 ARP220 21 07 47 15.6 -71.0 5.5 69.1 21 254 12 20 00 12 24 00 --- 21 11 48 14.8 -70.7 5.6 68.7 240 315 12 20 01 12 24 35 J1532+2344 21 12 24 14.3 -70.2 5.6 68.6 31 315 12 24 35 12 26 25 =1530+239 21 14 24 13.8 -70.0 5.7 68.4 110 344 12 24 36 12 26 51 ARP220 21 14 40 14.2 -70.4 5.6 68.5 21 344 12 26 51 12 30 51 --- 21 18 41 13.3 -70.1 5.7 68.2 240 405 12 26 52 12 31 27 J1532+2344 21 19 16 12.8 -69.6 5.8 68.0 31 405 12 31 27 12 33 17 =1530+239 21 21 17 12.4 -69.4 5.8 67.9 110 433 12 31 28 12 33 42 ARP220 21 21 32 12.7 -69.8 5.8 68.0 21 433 12 33 42 12 37 42 --- 21 25 33 11.8 -69.5 5.8 67.7 240 495 12 33 43 12 38 18 J1532+2344 21 26 09 11.3 -69.0 5.9 67.5 31 495 12 38 18 12 40 08 =1530+239 21 28 09 10.9 -68.8 5.9 67.3 110 523 12 38 19 12 40 33 ARP220 21 28 25 11.2 -69.2 5.9 67.4 21 523 12 40 33 12 44 33 --- 21 32 25 10.4 -68.8 5.9 67.1 240 585 12 40 34 Schedule for KUNMING (Code Km ) Page 3 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 ---------------------------------------------------------------------------------------- --- Fri 20 Oct 2017 Day 293 --- 12 45 09 J1532+2344 21 33 01 9.9 -68.4 6.0 66.9 31 585 12 45 09 12 46 59 =1530+239 21 35 01 9.5 -68.2 6.0 66.7 110 613 12 45 10 12 47 25 ARP220 21 35 17 9.8 -68.6 6.0 66.8 21 613 12 47 25 12 51 25 --- 21 39 18 8.9 -68.2 6.1 66.5 240 674 12 47 26 12 52 00 J1532+2344 21 39 54 8.4 -67.7 6.1 66.3 31 674 12 52 00 12 53 50 =1530+239 21 41 54 8.0 -67.6 6.1 66.1 110 703 12 52 01 12 54 16 ARP220 21 42 10 8.3 -67.9 6.1 66.3 21 703 12 54 16 12 58 16 --- 21 46 10 7.5 -67.6 6.2 65.9 240 764 12 54 17 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess317.X2048glob --- 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: 22 Station: KUNMING 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= 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 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 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 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: 15 Setup file default. Used with PCAL = off LO sum= 8272.00 8272.00 8272.00 8272.00 8336.00 8336.00 8336.00 8336.00 8400.00 8400.00 8400.00 8400.00 8464.00 8464.00 8464.00 8464.00 BBC fr= 172.00 172.00 172.00 172.00 236.00 236.00 236.00 236.00 300.00 300.00 300.00 300.00 364.00 364.00 364.00 364.00 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: 15 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 41.600758 0.00 23 40 07.75728 * 23 30 11.33000 23 26 58.91920 0.00 From catalog imbedded in main SCHED input file. Pos. from Batejat. et al 2011 1514+197 15 14 40.985840 * 15 16 56.796162 15 17 43.074973 0.01 * J1516+1932 19 43 10.94252 * 19 32 12.99209 19 28 37.83567 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 30.652858 0.10 * J1532+2344 23 54 09.32921 * 23 44 05.26804 23 40 50.07377 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 sess317.X2048glob 1 2 3 4 5 6 7 8 11 13 15 24 6.667 712.929 J1516+1932 sess317.X2048glob 1 2 3 4 5 6 7 8 11 13 15 24 0.650 66.000 J1532+2344 sess317.X2048glob 1 2 3 4 5 6 7 8 11 13 15 24 3.167 334.583 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 43.9 J1516+1932 38.2 J1532+2344 43.8 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