COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113D Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: F. Panessa Address: INAF-IAPS via del Fosso del Cavaliere, 100 00133 - Rome Italy Phone: +39 06 4548 8456 EMAIL: francesca.panessa@iaps.inaf.it Fax: --- Phone during observation: +39 06 4548 8456 Observing mode: Phase-referencing of a source at 1.3cm (1024 Mb/s) Notes: Target: NGC4151 Phase calibrator : J1209+4119 D-terms calibrator : -- Fringe finder : 3C286 Schedule for URUMQI (Code Ur ) Page 2 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Mon 11 Mar 2019 Day 70 --- Next scan frequencies: 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 Next BBC frequencies: 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 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 23 00 00 3C286 16 05 58 56.9 259.7 2.6 55.9 0 0 23 00 00 23 02 00 --- 16 07 59 56.6 260.2 2.6 56.0 120 15 23 00 01 23 04 20 J1209+4119 16 10 19 46.6 288.6 4.0 66.1 108 15 23 04 20 23 06 20 =1206+416 16 12 19 46.2 288.8 4.0 65.9 120 31 23 04 21 23 06 20 NGC4151 16 12 19 45.6 286.2 4.0 64.2 -7 31 No stop 23 10 20 --- 16 16 20 44.9 286.7 4.1 63.9 233 62 23 06 21 23 10 20 J1209+4119 16 16 20 45.6 289.3 4.1 65.6 -7 62 No stop 23 12 20 =1206+416 16 18 20 45.2 289.5 4.1 65.4 113 77 23 10 21 23 12 20 NGC4151 16 18 20 44.6 286.9 4.1 63.8 -7 77 No stop 23 16 20 --- 16 22 21 43.9 287.4 4.2 63.5 233 108 23 12 21 23 17 00 J1209+4119 16 23 01 44.4 290.0 4.2 65.0 33 108 23 17 00 23 19 00 =1206+416 16 25 01 44.1 290.2 4.2 64.9 120 123 23 17 01 23 19 00 NGC4151 16 25 01 43.4 287.7 4.2 63.3 -7 123 No stop 23 23 00 --- 16 29 02 42.7 288.2 4.3 63.0 233 154 23 19 01 23 23 00 J1209+4119 16 29 02 43.4 290.7 4.3 64.5 -7 154 No stop 23 25 00 =1206+416 16 31 02 43.0 290.9 4.3 64.3 113 169 23 23 01 23 25 00 NGC4151 16 31 02 42.4 288.4 4.3 62.8 -6 169 No stop 23 29 00 --- 16 35 03 41.7 288.9 4.4 62.5 234 200 23 25 01 23 29 40 J1209+4119 16 35 43 42.3 291.4 4.4 63.9 34 200 23 29 40 23 31 40 =1206+416 16 37 44 41.9 291.7 4.5 63.7 120 215 23 29 41 23 31 40 NGC4151 16 37 44 41.2 289.2 4.4 62.3 -6 215 No stop 23 35 40 --- 16 41 44 40.6 289.7 4.5 62.0 234 246 23 31 41 23 35 40 J1209+4119 16 41 44 41.2 292.1 4.5 63.4 -6 246 No stop 23 37 40 =1206+416 16 43 44 40.9 292.3 4.6 63.2 114 262 23 35 41 23 37 40 NGC4151 16 43 44 40.2 290.0 4.5 61.8 -6 262 No stop 23 41 40 --- 16 47 45 39.5 290.4 4.6 61.5 234 292 23 37 41 Schedule for URUMQI (Code Ur ) Page 3 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Mon 11 Mar 2019 Day 70 --- 23 42 20 J1209+4119 16 48 25 40.1 292.9 4.6 62.7 34 292 23 42 20 23 44 20 =1206+416 16 50 26 39.8 293.1 4.7 62.6 120 308 23 42 21 23 44 20 NGC4151 16 50 26 39.1 290.8 4.6 61.3 -6 308 No stop 23 48 20 --- 16 54 26 38.4 291.2 4.7 60.9 234 338 23 44 21 23 48 20 J1209+4119 16 54 26 39.1 293.5 4.7 62.2 -6 338 No stop 23 50 20 =1206+416 16 56 27 38.8 293.8 4.8 62.0 114 354 23 48 21 23 50 20 NGC4151 16 56 27 38.1 291.5 4.7 60.8 -6 354 No stop 23 54 20 --- 17 00 27 37.4 292.0 4.8 60.4 234 385 23 50 21 23 55 00 J1209+4119 17 01 07 38.0 294.3 4.8 61.6 34 385 23 55 00 23 57 00 =1206+416 17 03 08 37.7 294.5 4.9 61.4 120 400 23 55 01 --- Start: Mon 11 Mar 2019 Day 70 -- Stop: Tue 12 Mar 2019 Day 71 --- 23 57 00 NGC4151 17 03 08 36.9 292.3 4.9 60.2 -6 400 No stop 00 01 00 --- 17 07 08 36.3 292.8 4.9 59.9 234 431 23 57 01 00 01 00 J1209+4119 17 07 08 37.0 295.0 4.9 61.0 -6 431 No stop 00 03 00 =1206+416 17 09 09 36.7 295.2 5.0 60.8 114 446 00 01 01 00 03 00 NGC4151 17 09 09 35.9 293.0 5.0 59.7 -6 446 No stop 00 07 00 --- 17 13 09 35.3 293.5 5.0 59.3 234 477 00 03 01 00 07 40 J1209+4119 17 13 49 35.9 295.8 5.1 60.3 34 477 00 07 40 00 09 40 =1206+416 17 15 50 35.6 296.0 5.1 60.1 120 492 00 07 41 00 09 40 NGC4151 17 15 50 34.8 293.8 5.1 59.1 -6 492 No stop 00 13 40 --- 17 19 50 34.1 294.3 5.1 58.7 234 523 00 09 41 00 13 40 J1209+4119 17 19 50 34.9 296.4 5.2 59.8 -6 523 No stop 00 15 40 =1206+416 17 21 51 34.6 296.7 5.2 59.6 114 538 00 13 41 00 15 40 NGC4151 17 21 51 33.8 294.5 5.2 58.5 -6 538 No stop 00 19 40 --- 17 25 51 33.2 295.0 5.2 58.2 234 569 00 15 41 00 20 20 J1209+4119 17 26 31 33.9 297.2 5.3 59.1 34 569 00 20 20 00 22 20 =1206+416 17 28 32 33.5 297.5 5.3 58.9 120 585 00 20 21 00 22 20 NGC4151 17 28 32 32.7 295.4 5.3 57.9 -6 585 No stop 00 26 20 --- 17 32 32 32.1 295.9 5.4 57.6 234 615 00 22 21 Schedule for URUMQI (Code Ur ) Page 4 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Tue 12 Mar 2019 Day 71 --- 00 26 20 J1209+4119 17 32 32 32.9 297.9 5.4 58.5 -6 615 No stop 00 28 20 =1206+416 17 34 33 32.6 298.2 5.4 58.3 114 631 00 26 21 00 28 20 NGC4151 17 34 33 31.7 296.1 5.4 57.4 -6 631 No stop 00 32 20 --- 17 38 33 31.1 296.6 5.5 57.0 234 662 00 28 21 00 33 00 J1209+4119 17 39 14 31.8 298.7 5.5 57.8 34 662 00 33 00 00 35 00 =1206+416 17 41 14 31.5 298.9 5.5 57.6 120 677 00 33 01 00 37 20 3C286 17 43 34 39.3 277.2 4.2 56.6 114 677 00 37 20 00 40 00 --- 17 46 15 38.8 277.6 4.2 56.5 160 697 00 37 21 00 42 00 J1209+4119 17 48 15 30.4 299.8 5.6 56.9 94 697 00 42 00 00 44 00 =1206+416 17 50 15 30.1 300.0 5.7 56.7 120 713 00 42 01 00 44 00 NGC4151 17 50 15 29.2 298.0 5.6 55.9 -6 713 No stop 00 48 00 --- 17 54 16 28.6 298.5 5.7 55.5 234 744 00 44 01 00 48 40 J1209+4119 17 54 56 29.3 300.6 5.7 56.2 34 744 00 48 40 00 50 40 =1206+416 17 56 56 29.0 300.8 5.8 56.0 120 759 00 48 41 00 50 40 NGC4151 17 56 56 28.1 298.9 5.8 55.2 -6 759 No stop 00 54 40 --- 18 00 57 27.5 299.4 5.8 54.8 234 790 00 50 41 00 54 40 J1209+4119 18 00 57 28.4 301.3 5.8 55.5 -6 790 No stop 00 56 40 =1206+416 18 02 57 28.1 301.5 5.9 55.3 114 805 00 54 41 00 56 40 NGC4151 18 02 57 27.2 299.6 5.9 54.6 -6 805 No stop 01 00 40 --- 18 06 58 26.5 300.1 5.9 54.2 234 836 00 56 41 01 01 20 J1209+4119 18 07 38 27.4 302.1 6.0 54.8 34 836 01 01 20 01 03 20 =1206+416 18 09 39 27.1 302.4 6.0 54.6 120 851 01 01 21 01 03 20 NGC4151 18 09 39 26.1 300.5 6.0 53.9 -6 851 No stop 01 07 20 --- 18 13 39 25.5 301.0 6.0 53.5 234 882 01 03 21 01 07 20 J1209+4119 18 13 39 26.5 302.9 6.1 54.1 -6 882 No stop 01 09 20 =1206+416 18 15 40 26.2 303.1 6.1 53.9 114 897 01 07 21 01 09 20 NGC4151 18 15 40 25.2 301.2 6.1 53.3 -6 897 No stop 01 13 20 --- 18 19 40 24.6 301.7 6.1 52.9 234 928 01 09 21 01 14 00 J1209+4119 18 20 20 25.4 303.7 6.2 53.4 34 928 01 14 00 01 16 00 =1206+416 18 22 21 25.1 303.9 6.2 53.2 120 944 01 14 01 Schedule for URUMQI (Code Ur ) Page 5 The variable VLBI core of NGC 4151 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 ---------------------------------------------------------------------------------------- --- Tue 12 Mar 2019 Day 71 --- 01 16 00 NGC4151 18 22 21 24.2 302.1 6.2 52.6 -6 944 No stop 01 20 00 --- 18 26 21 23.5 302.6 6.2 52.2 234 974 01 16 01 01 20 00 J1209+4119 18 26 21 24.5 304.4 6.3 52.7 -6 974 No stop 01 22 00 =1206+416 18 28 22 24.2 304.7 6.3 52.5 114 990 01 20 01 01 22 00 NGC4151 18 28 22 23.2 302.9 6.3 52.0 -6 990 No stop 01 26 00 --- 18 32 22 22.6 303.4 6.3 51.5 234 1021 01 22 01 01 26 40 J1209+4119 18 33 02 23.5 305.3 6.4 52.0 34 1021 01 26 40 01 28 40 =1206+416 18 35 03 23.2 305.5 6.4 51.7 120 1036 01 26 41 01 28 40 NGC4151 18 35 03 22.2 303.7 6.4 51.2 -6 1036 No stop 01 32 40 --- 18 39 03 21.6 304.3 6.5 50.8 234 1067 01 28 41 01 32 40 J1209+4119 18 39 03 22.7 306.0 6.5 51.3 -6 1067 No stop 01 34 40 =1206+416 18 41 04 22.4 306.3 6.5 51.0 114 1082 01 32 41 01 34 40 NGC4151 18 41 04 21.3 304.5 6.5 50.6 -6 1082 No stop 01 38 40 --- 18 45 04 20.7 305.1 6.6 50.1 234 1113 01 34 41 01 39 20 J1209+4119 18 45 44 21.7 306.9 6.6 50.5 34 1113 01 39 20 01 41 20 =1206+416 18 47 45 21.4 307.1 6.6 50.3 120 1128 01 39 21 01 41 20 NGC4151 18 47 45 20.3 305.4 6.6 49.8 -6 1128 No stop 01 45 20 --- 18 51 45 19.7 306.0 6.7 49.4 234 1159 01 41 21 01 45 20 J1209+4119 18 51 45 20.8 307.7 6.7 49.8 -6 1159 No stop 01 47 20 =1206+416 18 53 46 20.5 307.9 6.7 49.6 114 1174 01 45 21 01 47 20 NGC4151 18 53 46 19.4 306.2 6.7 49.2 -6 1174 No stop 01 51 20 --- 18 57 46 18.9 306.8 6.8 48.7 234 1205 01 47 21 01 52 00 J1209+4119 18 58 27 19.9 308.5 6.8 49.0 34 1205 01 52 00 01 54 00 =1206+416 19 00 27 19.6 308.8 6.8 48.8 120 1221 01 52 01 01 54 00 NGC4151 19 00 27 18.5 307.1 6.8 48.4 -6 1221 No stop 01 58 00 --- 19 04 28 17.9 307.7 6.9 47.9 234 1251 01 54 01 01 58 00 J1209+4119 19 04 28 19.0 309.3 6.9 48.3 -6 1251 No stop 02 00 00 =1206+416 19 06 28 18.7 309.6 6.9 48.0 114 1267 01 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess119.K1024 --- 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: 13 Station: URUMQI Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 22000.00 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 2 10 2 10 3 11 3 11 4 12 4 12 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 A2 C1 A2 C1 A2 C1 A2 C1 The following frequency sets based on these setups were used. Frequency Set: 7 Setup file default. Used with PCAL = off LO sum= 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 BBC fr= 187.49 187.49 187.49 187.49 219.49 219.49 219.49 219.49 251.49 251.49 251.49 251.49 283.49 283.49 283.49 283.49 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= 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) * NGC4151 12 08 01.055801 * 12 10 32.583400 12 11 31.060957 0.00 39 41 02.10308 * 39 24 21.03100 39 17 54.18012 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 21.343591 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 14.53916 0.16 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 150 observations. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 01.677600 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 33.31208 0.16 1328+307 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 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 NGC4151 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 1.733 140.223 J1209+4119 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.933 77.892 3C286 sess119.K1024 1 2 3 4 5 6 7 8 9 10 14 15 0.078 9.942 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) NGC4151 142.8 J1209+4119 141.1 3C286 140.2 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