COVER INFORMATION Station: URUMQI (Code Ur ) 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 URUMQI (Code Ur ) 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 19 45 16 29.9 269.2 4.5 50.3 0 0 12 00 00 12 03 00 =1514+197 19 48 17 29.3 269.7 4.5 50.3 180 46 12 00 01 12 04 01 J1532+2344 19 49 18 34.6 271.0 4.3 52.4 47 46 12 04 01 12 05 51 =1530+239 19 51 19 34.3 271.4 4.3 52.4 110 74 12 04 02 12 06 17 ARP220 19 51 34 34.5 270.8 4.3 52.3 21 74 12 06 17 12 10 17 --- 19 55 35 33.7 271.5 4.3 52.3 240 136 12 06 18 12 10 53 J1532+2344 19 56 11 33.4 272.2 4.4 52.4 31 136 12 10 53 12 12 43 =1530+239 19 58 11 33.0 272.5 4.4 52.3 110 164 12 10 54 12 13 08 ARP220 19 58 27 33.2 272.0 4.4 52.2 21 164 12 13 08 12 17 08 --- 20 02 27 32.5 272.7 4.4 52.2 240 226 12 13 09 12 17 44 J1532+2344 20 03 03 32.1 273.3 4.5 52.3 31 226 12 17 44 12 19 34 =1530+239 20 05 03 31.8 273.7 4.5 52.3 110 254 12 17 45 12 20 00 ARP220 20 05 19 32.0 273.1 4.5 52.2 21 254 12 20 00 12 24 00 --- 20 09 20 31.2 273.8 4.6 52.1 240 315 12 20 01 12 24 35 J1532+2344 20 09 56 30.9 274.5 4.6 52.2 32 315 12 24 35 12 26 25 =1530+239 20 11 56 30.5 274.8 4.6 52.2 110 344 12 24 36 12 26 51 ARP220 20 12 12 30.7 274.3 4.6 52.1 21 344 12 26 51 12 30 51 --- 20 16 12 30.0 274.9 4.7 52.0 240 405 12 26 52 12 31 27 J1532+2344 20 16 48 29.6 275.6 4.7 52.1 32 405 12 31 27 12 33 17 =1530+239 20 18 48 29.3 275.9 4.8 52.0 110 433 12 31 28 12 33 42 ARP220 20 19 04 29.5 275.4 4.7 52.0 21 433 12 33 42 12 37 42 --- 20 23 05 28.8 276.0 4.8 51.9 240 495 12 33 43 12 38 18 J1532+2344 20 23 40 28.4 276.7 4.8 51.9 32 495 12 38 18 12 40 08 =1530+239 20 25 41 28.0 277.0 4.9 51.9 110 523 12 38 19 12 40 33 ARP220 20 25 56 28.2 276.5 4.8 51.8 21 523 12 40 33 12 44 33 --- 20 29 57 27.5 277.1 4.9 51.7 240 585 12 40 34 Schedule for URUMQI (Code Ur ) 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 20 30 33 27.2 277.8 5.0 51.7 32 585 12 45 09 12 46 59 =1530+239 20 32 33 26.8 278.1 5.0 51.7 110 613 12 45 10 12 47 25 ARP220 20 32 49 27.0 277.6 5.0 51.6 21 613 12 47 25 12 51 25 --- 20 36 50 26.3 278.2 5.0 51.5 240 674 12 47 26 12 52 00 J1532+2344 20 37 25 25.9 278.9 5.1 51.5 32 674 12 52 00 12 53 50 =1530+239 20 39 26 25.6 279.2 5.1 51.5 110 703 12 52 01 12 54 16 ARP220 20 39 41 25.8 278.7 5.1 51.4 22 703 12 54 16 12 58 16 --- 20 43 42 25.1 279.3 5.1 51.3 240 764 12 54 17 ---------- BLOCK 1 FINISHED ---------- 12 59 08 J1516+1932 20 44 34 19.1 279.0 5.4 49.5 37 764 12 59 08 13 02 08 =1514+197 20 47 34 18.6 279.5 5.5 49.4 180 810 12 59 09 13 03 05 J1532+2344 20 48 32 24.0 280.6 5.3 51.2 43 810 13 03 05 13 04 55 =1530+239 20 50 32 23.6 280.9 5.3 51.1 110 838 13 03 06 13 05 20 ARP220 20 50 48 23.8 280.4 5.3 51.1 22 838 13 05 20 13 09 20 --- 20 54 48 23.1 281.1 5.3 50.9 240 900 13 05 21 13 09 56 J1532+2344 20 55 24 22.7 281.7 5.4 50.9 32 900 13 09 56 13 11 46 =1530+239 20 57 24 22.4 282.0 5.4 50.8 110 928 13 09 57 13 12 12 ARP220 20 57 40 22.6 281.5 5.4 50.8 22 928 13 12 12 13 16 12 --- 21 01 41 21.9 282.2 5.4 50.7 240 990 13 12 13 13 16 47 J1532+2344 21 02 16 21.5 282.8 5.5 50.6 32 990 13 16 47 13 18 37 =1530+239 21 04 17 21.2 283.1 5.5 50.5 110 1018 13 16 48 13 19 03 ARP220 21 04 32 21.3 282.6 5.5 50.5 22 1018 13 19 03 13 23 03 --- 21 08 33 20.6 283.2 5.5 50.4 240 1079 13 19 04 13 23 39 J1532+2344 21 09 09 20.3 283.9 5.6 50.3 32 1079 13 23 39 13 25 29 =1530+239 21 11 09 19.9 284.2 5.6 50.2 110 1108 13 23 40 13 25 54 ARP220 21 11 25 20.1 283.7 5.6 50.2 22 1108 13 25 54 13 29 54 --- 21 15 25 19.4 284.3 5.7 50.0 240 1169 13 25 55 13 30 30 J1532+2344 21 16 01 19.1 284.9 5.7 50.0 32 1169 13 30 30 13 32 20 =1530+239 21 18 02 18.7 285.2 5.7 49.9 110 1197 13 30 31 Schedule for URUMQI (Code Ur ) Page 4 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 --- 13 32 46 ARP220 21 18 17 18.9 284.8 5.7 49.9 22 1197 13 32 46 13 36 46 --- 21 22 18 18.2 285.4 5.8 49.7 240 1259 13 32 47 13 37 21 J1532+2344 21 22 54 17.9 286.0 5.8 49.6 32 1259 13 37 21 13 39 11 =1530+239 21 24 54 17.5 286.3 5.9 49.5 110 1287 13 37 22 13 39 37 ARP220 21 25 10 17.7 285.8 5.8 49.6 22 1287 13 39 37 13 43 37 --- 21 29 10 17.0 286.5 5.9 49.3 240 1349 13 39 38 13 44 13 J1532+2344 21 29 46 16.7 287.1 5.9 49.2 32 1349 13 44 13 13 46 03 =1530+239 21 31 46 16.3 287.4 6.0 49.1 110 1377 13 44 14 13 46 28 ARP220 21 32 02 16.5 286.9 5.9 49.2 22 1377 13 46 28 13 50 28 --- 21 36 03 15.8 287.5 6.0 49.0 240 1438 13 46 29 13 51 04 J1532+2344 21 36 38 15.5 288.1 6.1 48.9 32 1438 13 51 04 13 52 54 =1530+239 21 38 39 15.2 288.5 6.1 48.7 110 1467 13 51 05 13 53 20 ARP220 21 38 54 15.3 288.0 6.1 48.8 22 1467 13 53 20 13 57 20 --- 21 42 55 14.6 288.6 6.1 48.6 240 1528 13 53 21 ---------- BLOCK 2 FINISHED ---------- 13 58 02 J1516+1932 21 43 38 8.8 288.6 6.4 46.9 28 1528 13 58 02 14 01 02 =1514+197 21 46 39 8.2 289.1 6.5 46.7 180 1574 13 58 03 14 01 54 J1532+2344 21 47 31 13.6 289.8 6.2 48.2 38 1574 14 01 54 14 03 44 =1530+239 21 49 31 13.3 290.2 6.3 48.1 110 1603 14 01 55 14 04 10 ARP220 21 49 47 13.5 289.7 6.2 48.1 22 1603 14 04 10 14 08 10 --- 21 53 47 12.8 290.3 6.3 47.9 240 1664 14 04 11 14 08 46 J1532+2344 21 54 23 12.5 290.9 6.3 47.7 32 1664 14 08 46 14 10 36 =1530+239 21 56 23 12.1 291.2 6.4 47.6 110 1692 14 08 47 14 11 01 ARP220 21 56 39 12.3 290.8 6.3 47.7 22 1692 14 11 01 14 15 01 --- 22 00 40 11.6 291.4 6.4 47.4 240 1754 14 11 02 14 15 37 J1532+2344 22 01 16 11.3 292.0 6.5 47.3 32 1754 14 15 37 14 17 27 =1530+239 22 03 16 11.0 292.3 6.5 47.1 110 1782 14 15 38 14 17 53 ARP220 22 03 32 11.1 291.9 6.5 47.2 22 1782 14 17 53 14 21 53 --- 22 07 32 10.5 292.5 6.5 47.0 240 1844 14 17 54 Schedule for URUMQI (Code Ur ) Page 5 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 --- 14 22 28 J1532+2344 22 08 08 10.2 293.1 6.6 46.8 32 1844 14 22 28 14 24 18 =1530+239 22 10 08 9.8 293.4 6.6 46.6 110 1872 14 22 29 14 24 44 ARP220 22 10 24 10.0 292.9 6.6 46.8 22 1872 14 24 44 14 28 44 --- 22 14 25 9.3 293.6 6.6 46.5 240 1933 14 24 45 14 29 20 J1532+2344 22 15 00 9.0 294.2 6.7 46.3 32 1933 14 29 20 14 31 10 =1530+239 22 17 01 8.7 294.5 6.7 46.1 110 1962 14 29 21 14 31 35 ARP220 22 17 16 8.8 294.0 6.7 46.3 22 1962 14 31 35 14 35 35 --- 22 21 17 8.2 294.7 6.8 45.9 240 2023 14 31 36 14 36 11 J1532+2344 22 21 53 7.9 295.3 6.8 45.8 32 2023 14 36 11 14 38 01 =1530+239 22 23 53 7.6 295.6 6.8 45.6 110 2051 14 36 12 14 38 26 ARP220 22 24 09 7.7 295.2 6.8 45.7 22 2051 14 38 26 14 42 26 --- 22 28 09 7.0 295.8 6.9 45.4 240 2113 14 38 27 14 43 02 J1532+2344 22 28 45 6.8 296.4 6.9 45.2 32 2113 14 43 02 14 44 52 =1530+239 22 30 46 6.4 296.7 7.0 45.0 110 2141 14 43 03 14 45 18 ARP220 22 31 01 6.6 296.3 6.9 45.2 22 2141 14 45 18 14 49 18 --- 22 35 02 5.9 296.9 7.0 44.9 240 2203 14 45 19 14 49 53 J1532+2344 22 35 38 5.6 297.5 7.0 44.6 32 2203 14 49 53 14 51 43 =1530+239 22 37 38 5.3 297.9 7.1 44.5 110 2231 14 49 54 14 52 09 ARP220 22 37 54 5.5 297.4 7.0 44.6 22 2231 14 52 09 14 56 09 --- 22 41 54 4.8 298.1 7.1 D 44.3 0 2292 14 52 10 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: 21 Station: URUMQI 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 = A1 C2 A1 C2 A1 C2 A1 C2 B1 D2 B1 D2 B1 D2 B1 D2 The following frequency sets based on these setups were used. Frequency Set: 6 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: 6 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