COVER INFORMATION Station: EFLSBERG (Code Ef ) 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 EFLSBERG (Code Ef ) 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: 687.49 687.49 687.49 687.49 719.49 719.49 719.49 719.49 751.49 751.49 751.49 751.49 783.49 783.49 783.49 783.49 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 10 44 48 53.1 106.9 -2.8 -44.9 0 0 23 00 00 23 02 00 --- 10 46 48 53.4 107.4 -2.8 -44.7 120 15 23 00 01 23 04 20 J1209+4119 10 49 08 73.2 115.7 -1.4 -49.6 31 15 23 04 20 23 06 20 =1206+416 10 51 09 73.4 116.6 -1.3 -49.1 120 31 23 04 21 23 06 20 NGC4151 10 51 09 72.0 120.8 -1.3 -44.9 -47 31 No stop 23 10 20 --- 10 55 09 72.5 122.6 -1.3 -43.8 193 62 23 06 21 23 10 20 J1209+4119 10 55 09 74.0 118.3 -1.3 -48.1 -46 62 No stop 23 12 20 =1206+416 10 57 10 74.3 119.3 -1.2 -47.5 74 77 23 10 21 23 12 20 NGC4151 10 57 10 72.8 123.5 -1.2 -43.2 -48 77 No stop 23 16 20 --- 11 01 10 73.3 125.5 -1.2 -42.0 192 108 23 12 21 23 17 00 J1209+4119 11 01 50 74.9 121.5 -1.1 -46.1 -6 108 23 17 00 23 19 00 =1206+416 11 03 51 75.2 122.6 -1.1 -45.4 114 124 23 17 01 23 19 00 NGC4151 11 03 51 73.7 126.9 -1.1 -41.1 -48 124 No stop 23 23 00 --- 11 07 51 74.2 129.0 -1.1 -39.7 192 155 23 19 01 23 23 00 J1209+4119 11 07 51 75.7 124.7 -1.0 -44.0 -46 155 No stop 23 25 00 =1206+416 11 09 52 76.0 125.8 -1.0 -43.3 74 170 23 23 01 23 25 00 NGC4151 11 09 52 74.4 130.1 -1.0 -38.9 -48 170 No stop 23 29 00 --- 11 13 52 74.9 132.4 -1.0 -37.3 192 201 23 25 01 23 29 40 J1209+4119 11 14 32 76.6 128.6 -0.9 -41.4 -6 201 23 29 40 23 31 40 =1206+416 11 16 33 76.8 129.8 -0.9 -40.5 114 216 23 29 41 23 31 40 NGC4151 11 16 33 75.2 134.0 -0.9 -36.2 -48 216 No stop 23 35 40 --- 11 20 33 75.6 136.5 -0.8 -34.4 192 247 23 31 41 23 35 40 J1209+4119 11 20 33 77.3 132.4 -0.8 -38.6 -45 247 No stop 23 37 40 =1206+416 11 22 34 77.5 133.8 -0.8 -37.6 75 263 23 35 41 23 37 40 NGC4151 11 22 34 75.9 137.8 -0.8 -33.5 -47 263 No stop 23 41 40 --- 11 26 34 76.3 140.5 -0.7 -31.5 193 294 23 37 41 Schedule for EFLSBERG (Code Ef ) 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 11 27 15 78.1 137.1 -0.7 -35.1 -4 294 23 42 20 23 44 20 =1206+416 11 29 15 78.3 138.6 -0.7 -34.0 116 309 23 42 21 23 44 20 NGC4151 11 29 15 76.5 142.4 -0.7 -30.1 -46 309 No stop 23 48 20 --- 11 33 16 76.9 145.4 -0.6 -27.8 194 340 23 44 21 23 48 20 J1209+4119 11 33 16 78.7 141.8 -0.6 -31.5 -43 340 No stop 23 50 20 =1206+416 11 35 16 78.9 143.5 -0.6 -30.2 77 356 23 48 21 23 50 20 NGC4151 11 35 16 77.1 146.9 -0.6 -26.6 -45 356 No stop 23 54 20 --- 11 39 17 77.4 150.1 -0.5 -24.2 195 386 23 50 21 23 55 00 J1209+4119 11 39 57 79.3 147.6 -0.5 -27.0 -1 386 23 55 00 23 57 00 =1206+416 11 41 57 79.5 149.4 -0.5 -25.5 119 402 23 55 01 --- Start: Mon 11 Mar 2019 Day 70 -- Stop: Tue 12 Mar 2019 Day 71 --- 23 57 00 NGC4151 11 41 57 77.6 152.3 -0.5 -22.4 -43 402 No stop 00 01 00 --- 11 45 58 77.9 155.7 -0.4 -19.7 197 433 23 57 01 00 01 00 J1209+4119 11 45 58 79.8 153.2 -0.4 -22.4 -38 433 No stop 00 03 00 =1206+416 11 47 58 79.9 155.2 -0.4 -20.7 82 448 00 01 01 00 03 00 NGC4151 11 47 58 78.0 157.5 -0.4 -18.3 -40 448 No stop 00 07 00 --- 11 51 59 78.3 161.1 -0.3 -15.4 200 479 00 03 01 00 07 40 J1209+4119 11 52 39 80.2 160.0 -0.3 -16.8 3 479 00 07 40 00 09 40 =1206+416 11 54 39 80.3 162.2 -0.3 -15.0 120 495 00 07 41 00 09 40 NGC4151 11 54 39 78.4 163.6 -0.3 -13.4 -37 495 No stop 00 13 40 --- 11 58 40 78.5 167.4 -0.2 -10.3 203 526 00 09 41 00 13 40 J1209+4119 11 58 40 80.5 166.6 -0.2 -11.3 -37 526 No stop 00 15 40 =1206+416 12 00 40 80.5 168.8 -0.2 -9.4 83 541 00 13 41 00 15 40 NGC4151 12 00 40 78.6 169.3 -0.2 -8.8 -37 541 No stop 00 19 40 --- 12 04 41 78.7 173.2 -0.1 -5.6 203 572 00 15 41 00 20 20 J1209+4119 12 05 21 80.7 174.2 -0.1 -4.9 3 572 00 20 20 00 22 20 =1206+416 12 07 21 80.7 176.5 -0.1 -2.9 120 587 00 20 21 00 22 20 NGC4151 12 07 21 78.7 175.9 -0.1 -3.4 -37 587 No stop 00 26 20 --- 12 11 22 78.8 179.8 -0.0 -0.1 203 618 00 22 21 Schedule for EFLSBERG (Code Ef ) 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 12 11 22 80.7 181.2 0.0 1.0 -37 618 No stop 00 28 20 =1206+416 12 13 22 80.7 183.5 0.1 3.0 83 634 00 26 21 00 28 20 NGC4151 12 13 22 78.8 181.8 0.0 1.5 -37 634 No stop 00 32 20 --- 12 17 23 78.7 185.8 0.1 4.8 203 665 00 28 21 00 33 00 J1209+4119 12 18 03 80.6 188.9 0.1 7.5 -1 665 00 33 00 00 35 00 =1206+416 12 20 03 80.5 191.2 0.2 9.4 119 680 00 33 01 00 37 20 3C286 12 22 24 66.0 140.5 -1.2 -27.9 -21 680 00 37 20 00 40 00 --- 12 25 04 66.3 141.8 -1.1 -27.1 139 701 00 37 21 00 42 00 J1209+4119 12 27 04 80.3 198.9 0.3 15.9 -58 701 00 42 00 00 44 00 =1206+416 12 29 05 80.1 201.0 0.3 17.6 62 716 00 42 01 00 44 00 NGC4151 12 29 05 78.4 197.1 0.3 14.0 -44 716 No stop 00 48 00 --- 12 33 05 78.1 200.7 0.4 16.9 196 747 00 44 01 00 48 40 J1209+4119 12 33 45 79.9 205.8 0.4 21.6 -9 747 00 48 40 00 50 40 =1206+416 12 35 46 79.7 207.8 0.4 23.2 111 763 00 48 41 00 50 40 NGC4151 12 35 46 78.0 203.1 0.4 18.8 -46 763 No stop 00 54 40 --- 12 39 46 77.7 206.6 0.5 21.6 194 794 00 50 41 00 54 40 J1209+4119 12 39 46 79.4 211.5 0.5 26.2 -51 794 No stop 00 56 40 =1206+416 12 41 47 79.2 213.3 0.5 27.7 69 809 00 54 41 00 56 40 NGC4151 12 41 47 77.6 208.3 0.5 22.9 -48 809 No stop 01 00 40 --- 12 45 47 77.3 211.5 0.6 25.4 192 840 00 56 41 01 01 20 J1209+4119 12 46 28 78.8 217.4 0.6 30.9 -12 840 01 01 20 01 03 20 =1206+416 12 48 28 78.6 219.0 0.6 32.1 108 855 01 01 21 01 03 20 NGC4151 12 48 28 77.0 213.6 0.6 27.0 -49 855 No stop 01 07 20 --- 12 52 29 76.7 216.6 0.7 29.3 191 886 01 03 21 01 07 20 J1209+4119 12 52 29 78.2 222.1 0.7 34.6 -52 886 No stop 01 09 20 =1206+416 12 54 29 78.0 223.6 0.7 35.7 68 902 01 07 21 01 09 20 NGC4151 12 54 29 76.5 218.1 0.7 30.4 -50 902 No stop 01 13 20 --- 12 58 30 76.1 220.8 0.8 32.5 190 933 01 09 21 01 14 00 J1209+4119 12 59 10 77.4 226.9 0.8 38.1 -13 933 01 14 00 01 16 00 =1206+416 13 01 10 77.2 228.3 0.8 39.1 107 948 01 14 01 Schedule for EFLSBERG (Code Ef ) 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 13 01 10 75.8 222.6 0.8 33.8 -50 948 No stop 01 20 00 --- 13 05 11 75.3 225.2 0.9 35.6 190 979 01 16 01 01 20 00 J1209+4119 13 05 11 76.7 230.8 0.9 40.9 -53 979 No stop 01 22 00 =1206+416 13 07 11 76.5 232.1 0.9 41.8 67 994 01 20 01 01 22 00 NGC4151 13 07 11 75.1 226.4 0.9 36.5 -50 994 No stop 01 26 00 --- 13 11 12 74.6 228.8 1.0 38.2 190 1025 01 22 01 01 26 40 J1209+4119 13 11 52 75.9 234.8 1.0 43.7 -12 1025 01 26 40 01 28 40 =1206+416 13 13 52 75.6 235.9 1.1 44.4 108 1041 01 26 41 01 28 40 NGC4151 13 13 52 74.3 230.3 1.0 39.2 -50 1041 No stop 01 32 40 --- 13 17 53 73.8 232.5 1.1 40.6 190 1072 01 28 41 01 32 40 J1209+4119 13 17 53 75.1 238.0 1.1 45.8 -52 1072 No stop 01 34 40 =1206+416 13 19 53 74.8 239.0 1.2 46.4 68 1087 01 32 41 01 34 40 NGC4151 13 19 53 73.6 233.5 1.1 41.3 -50 1087 No stop 01 38 40 --- 13 23 54 73.0 235.5 1.2 42.6 190 1118 01 34 41 01 39 20 J1209+4119 13 24 34 74.2 241.2 1.2 47.8 -11 1118 01 39 20 01 41 20 =1206+416 13 26 34 73.9 242.1 1.3 48.3 109 1134 01 39 21 01 41 20 NGC4151 13 26 34 72.7 236.8 1.3 43.4 -50 1134 No stop 01 45 20 --- 13 30 35 72.2 238.6 1.3 44.5 190 1165 01 41 21 01 45 20 J1209+4119 13 30 35 73.3 243.9 1.3 49.4 -51 1165 No stop 01 47 20 =1206+416 13 32 35 73.0 244.7 1.4 49.8 69 1180 01 45 21 01 47 20 NGC4151 13 32 35 71.9 239.5 1.4 45.1 -49 1180 No stop 01 51 20 --- 13 36 36 71.3 241.3 1.4 46.1 191 1211 01 47 21 01 52 00 J1209+4119 13 37 16 72.3 246.6 1.4 50.9 -10 1211 01 52 00 01 54 00 =1206+416 13 39 16 72.0 247.4 1.5 51.3 110 1226 01 52 01 01 54 00 NGC4151 13 39 16 71.0 242.4 1.5 46.7 -49 1226 No stop 01 58 00 --- 13 43 17 70.4 244.0 1.5 47.6 191 1257 01 54 01 01 58 00 J1209+4119 13 43 17 71.5 248.9 1.5 52.0 -50 1257 No stop 02 00 00 =1206+416 13 45 17 71.2 249.6 1.6 52.4 70 1273 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 Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: ef1cm_d 1.3cm secondary focus, IF 500-1000 MHz ****** Only 128.00 of 256.00 MHz total bandwidth is within the IFs in the setup file before any FREQ or DOPPLER shifts. Setup group: 4 Station: EFLSBERG Total bit rate: 1024 Format: VDIF 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= 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 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 = A1 C3 A1 C3 A1 C3 A1 C3 A1 C3 A1 C3 A1 C3 A1 C3 The following frequency sets based on these setups were used. Frequency Set: 2 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= 687.49 687.49 687.49 687.49 719.49 719.49 719.49 719.49 751.49 751.49 751.49 751.49 783.49 783.49 783.49 783.49 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: 2 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 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