COVER INFORMATION Station: TIANMA65 (Code T6 ) 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 TIANMA65 (Code T6 ) 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 23 11 17 J1532+2344 09 14 13 8.1 67.2 -6.3 -59.5 0 0 23 11 08 23 13 17 =1530+239 09 16 14 8.5 67.4 -6.3 -59.7 120 33 23 11 09 23 13 26 ARP220 09 16 23 8.0 67.4 -6.3 -59.5 5 33 No stop 23 17 26 --- 09 20 24 8.8 67.9 -6.3 -59.8 240 97 23 13 18 23 17 36 J1532+2344 09 20 33 9.4 67.9 -6.2 -60.1 5 97 No stop 23 19 36 =1530+239 09 22 33 9.8 68.2 -6.2 -60.2 120 130 23 17 27 23 19 45 ARP220 09 22 43 9.3 68.1 -6.2 -60.0 5 130 No stop 23 23 45 --- 09 26 44 10.1 68.6 -6.1 -60.3 240 194 23 19 37 ---------- BLOCK 12 FINISHED ---------- 23 24 13 J1516+1932 09 27 12 11.9 74.3 -5.8 -61.0 15 194 23 24 13 23 27 13 =1514+197 09 30 12 12.5 74.6 -5.8 -61.1 180 240 23 24 14 23 27 46 J1532+2344 09 30 45 11.4 69.1 -6.0 -60.9 20 240 23 27 46 23 29 46 =1530+239 09 32 46 11.8 69.3 -6.0 -61.0 120 271 23 27 47 23 29 56 ARP220 09 32 56 11.3 69.3 -6.0 -60.8 6 271 23 29 56 23 33 56 --- 09 36 57 12.1 69.8 -6.0 -61.1 240 333 23 29 57 23 34 07 J1532+2344 09 37 07 12.7 69.8 -5.9 -61.4 7 333 23 34 07 23 36 07 =1530+239 09 39 08 13.1 70.0 -5.9 -61.5 120 363 23 34 08 23 36 18 ARP220 09 39 19 12.6 70.0 -5.9 -61.3 7 363 23 36 18 23 40 18 --- 09 43 19 13.4 70.5 -5.9 -61.6 240 425 23 36 19 23 40 30 J1532+2344 09 43 31 14.0 70.5 -5.8 -61.8 7 425 23 40 30 23 42 30 =1530+239 09 45 31 14.4 70.8 -5.8 -62.0 120 456 23 40 31 23 42 42 ARP220 09 45 43 13.9 70.8 -5.8 -61.8 8 456 23 42 42 23 46 42 --- 09 49 44 14.7 71.2 -5.8 -62.1 240 517 23 42 43 23 46 54 J1532+2344 09 49 57 15.3 71.3 -5.7 -62.3 9 517 23 46 54 23 48 54 =1530+239 09 51 57 15.7 71.5 -5.7 -62.4 120 548 23 46 55 Schedule for TIANMA65 (Code T6 ) 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 --- 23 49 07 ARP220 09 52 10 15.2 71.5 -5.7 -62.3 9 548 23 49 07 23 53 07 --- 09 56 10 16.0 71.9 -5.7 -62.5 240 609 23 49 08 23 53 21 J1532+2344 09 56 24 16.6 72.0 -5.6 -62.8 9 609 23 53 21 23 55 21 =1530+239 09 58 24 17.0 72.2 -5.6 -62.9 120 640 23 53 22 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: 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= 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 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 = A4 C3 A4 C3 A4 C3 A4 C3 B4 D3 B4 D3 B4 D3 B4 D3 The following frequency sets based on these setups were used. Frequency Set: 24 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: 24 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