COVER INFORMATION Station: JODRELL2 (Code Jb ) Experiment: The variable VLBI core of NGC 4151 Exp. Code: EP113E 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 Notes: Target: NGC4151 Phase calibrator : J1209+4119 D-terms calibrator : -- Fringe finder : 3C286 Schedule for JODRELL2 (Code Jb ) 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 10 Jun 2019 Day 161 --- Next scan frequencies: 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 Next BBC frequencies: 884.51 884.51 884.51 884.51 820.51 820.51 820.51 820.51 756.51 756.51 756.51 756.51 692.51 692.51 692.51 692.51 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 17 00 00 3C286 10 05 50 46.6 100.6 -3.4 -43.0 0 0 17 00 00 17 02 00 --- 10 07 50 46.9 101.1 -3.4 -42.9 120 31 17 00 01 17 04 20 J1209+4119 10 10 11 66.6 108.7 -2.0 -48.9 64 31 17 04 20 17 06 20 =1206+416 10 12 11 66.9 109.3 -2.0 -48.7 120 62 17 04 21 17 06 20 NGC4151 10 12 11 65.4 112.4 -2.0 -45.7 -31 62 No stop 17 10 20 --- 10 16 12 65.9 113.7 -1.9 -45.1 209 124 17 06 21 17 10 20 J1209+4119 10 16 12 67.4 110.6 -1.9 -48.2 -29 124 No stop 17 12 20 =1206+416 10 18 12 67.7 111.2 -1.9 -47.9 91 155 17 10 21 17 12 20 NGC4151 10 18 12 66.2 114.4 -1.9 -44.8 -31 155 No stop 17 16 20 --- 10 22 13 66.8 115.8 -1.8 -44.1 209 216 17 12 21 17 17 00 J1209+4119 10 22 53 68.4 112.8 -1.8 -47.2 10 216 17 17 00 17 19 00 =1206+416 10 24 53 68.6 113.5 -1.8 -46.9 120 247 17 17 01 17 19 00 NGC4151 10 24 53 67.1 116.7 -1.8 -43.7 -31 247 No stop 17 23 00 --- 10 28 54 67.7 118.2 -1.7 -43.0 209 309 17 19 01 17 23 00 J1209+4119 10 28 54 69.2 115.0 -1.7 -46.2 -30 309 No stop 17 25 00 =1206+416 10 30 54 69.5 115.7 -1.7 -45.8 90 340 17 23 01 17 25 00 NGC4151 10 30 54 67.9 119.0 -1.7 -42.6 -31 340 No stop 17 29 00 --- 10 34 55 68.4 120.5 -1.6 -41.8 209 402 17 25 01 17 29 40 J1209+4119 10 35 35 70.1 117.5 -1.6 -44.9 10 402 17 29 40 17 31 40 =1206+416 10 37 35 70.3 118.3 -1.5 -44.5 120 433 17 29 41 17 31 40 NGC4151 10 37 35 68.8 121.6 -1.6 -41.2 -31 433 No stop 17 35 40 --- 10 41 36 69.3 123.2 -1.5 -40.3 209 495 17 31 41 17 35 40 J1209+4119 10 41 36 70.9 119.9 -1.5 -43.6 -30 495 No stop 17 37 40 =1206+416 10 43 36 71.1 120.8 -1.4 -43.1 90 526 17 35 41 17 37 40 NGC4151 10 43 36 69.5 124.1 -1.5 -39.9 -32 526 No stop 17 41 40 --- 10 47 37 70.0 125.8 -1.4 -38.9 208 587 17 37 41 Schedule for JODRELL2 (Code Jb ) 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 10 Jun 2019 Day 161 --- 17 42 20 J1209+4119 10 48 17 71.7 122.8 -1.4 -42.0 10 587 17 42 20 17 44 20 =1206+416 10 50 17 72.0 123.7 -1.3 -41.5 120 618 17 42 21 17 44 20 NGC4151 10 50 17 70.4 127.0 -1.4 -38.2 -32 618 No stop 17 48 20 --- 10 54 18 70.8 128.8 -1.3 -37.1 208 680 17 44 21 17 48 20 J1209+4119 10 54 18 72.5 125.6 -1.3 -40.3 -30 680 No stop 17 50 20 =1206+416 10 56 18 72.7 126.5 -1.2 -39.8 90 711 17 48 21 17 50 20 NGC4151 10 56 18 71.1 129.8 -1.3 -36.5 -32 711 No stop 17 54 20 --- 11 00 19 71.5 131.7 -1.2 -35.2 208 773 17 50 21 17 55 00 J1209+4119 11 00 59 73.3 128.9 -1.2 -38.3 11 773 17 55 00 17 57 00 =1206+416 11 02 59 73.5 129.9 -1.1 -37.6 120 804 17 55 01 17 57 00 NGC4151 11 02 59 71.8 133.1 -1.1 -34.4 -31 804 No stop 18 01 00 --- 11 07 00 72.2 135.2 -1.1 -33.0 209 866 17 57 01 18 01 00 J1209+4119 11 07 00 74.0 132.1 -1.1 -36.2 -29 866 No stop 18 03 00 =1206+416 11 09 00 74.2 133.2 -1.0 -35.5 91 897 18 01 01 18 03 00 NGC4151 11 09 00 72.5 136.3 -1.0 -32.3 -31 897 No stop 18 07 00 --- 11 13 01 72.9 138.5 -1.0 -30.8 209 958 18 03 01 18 07 40 J1209+4119 11 13 41 74.7 135.9 -0.9 -33.6 12 958 18 07 40 18 09 40 =1206+416 11 15 41 74.9 137.1 -0.9 -32.8 120 989 18 07 41 18 09 40 NGC4151 11 15 41 73.1 140.0 -0.9 -29.8 -30 989 No stop 18 13 40 --- 11 19 42 73.5 142.4 -0.9 -28.2 210 1051 18 09 41 18 13 40 J1209+4119 11 19 42 75.3 139.6 -0.8 -31.1 -27 1051 No stop 18 15 40 =1206+416 11 21 42 75.5 140.8 -0.8 -30.2 93 1082 18 13 41 18 15 40 NGC4151 11 21 42 73.7 143.6 -0.8 -27.3 -29 1082 No stop 18 19 40 --- 11 25 43 74.0 146.1 -0.8 -25.6 211 1144 18 15 41 18 20 20 J1209+4119 11 26 23 75.9 144.0 -0.7 -27.9 14 1144 18 20 20 18 22 20 =1206+416 11 28 24 76.1 145.3 -0.7 -26.9 120 1175 18 20 21 18 22 20 NGC4151 11 28 24 74.2 147.8 -0.7 -24.3 -28 1175 No stop 18 26 20 --- 11 32 24 74.5 150.4 -0.7 -22.4 212 1237 18 22 21 18 26 20 J1209+4119 11 32 24 76.4 148.2 -0.6 -24.8 -24 1237 No stop 18 28 20 =1206+416 11 34 25 76.6 149.7 -0.6 -23.7 96 1268 18 26 21 Schedule for JODRELL2 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- 18 28 20 NGC4151 11 34 25 74.7 151.8 -0.6 -21.4 -27 1268 No stop 18 32 20 --- 11 38 25 75.0 154.6 -0.6 -19.4 213 1329 18 28 21 18 33 00 J1209+4119 11 39 05 76.9 153.2 -0.5 -21.0 18 1329 18 33 00 18 35 00 =1206+416 11 41 06 77.0 154.8 -0.5 -19.8 120 1360 18 33 01 18 37 20 3C286 11 43 26 59.9 128.4 -1.8 -33.0 37 1360 18 37 20 18 40 00 --- 11 46 06 60.2 129.4 -1.8 -32.5 160 1402 18 37 21 ---------- Ef out for pointing ---------- 18 43 00 J1209+4119 11 49 07 77.5 161.3 -0.4 -14.8 64 1402 18 43 00 18 45 00 =1206+416 11 51 07 77.6 163.0 -0.3 -13.5 120 1432 18 43 01 18 45 00 NGC4151 11 51 07 75.6 163.9 -0.3 -12.4 -21 1432 No stop 18 48 30 --- 11 54 38 75.8 166.6 -0.3 -10.3 189 1487 18 45 01 18 49 10 J1209+4119 11 55 18 77.7 166.6 -0.3 -10.6 19 1487 18 49 10 18 51 10 =1206+416 11 57 18 77.8 168.3 -0.2 -9.3 120 1517 18 49 11 ---------- Ef back ---------- 18 51 10 NGC4151 11 57 18 75.9 168.7 -0.2 -8.7 -21 1517 No stop 18 54 40 --- 12 00 49 75.9 171.4 -0.2 -6.6 189 1572 18 51 11 18 54 40 J1209+4119 12 00 49 77.9 171.4 -0.2 -6.8 -21 1572 No stop 18 56 40 =1206+416 12 02 49 77.9 173.2 -0.1 -5.4 99 1603 18 54 41 18 56 40 NGC4151 12 02 49 76.0 173.0 -0.1 -5.4 -21 1603 No stop 19 00 40 --- 12 06 50 76.0 176.2 -0.1 -2.9 219 1664 18 56 41 19 01 20 J1209+4119 12 07 30 78.0 177.4 -0.0 -2.0 19 1664 19 01 20 19 03 20 =1206+416 12 09 30 78.0 179.2 -0.0 -0.6 120 1695 19 01 21 19 03 20 NGC4151 12 09 30 76.1 178.4 -0.0 -1.2 -21 1695 No stop 19 07 20 --- 12 13 31 76.1 181.6 0.0 1.2 219 1757 19 03 21 19 07 20 J1209+4119 12 13 31 78.0 182.9 0.1 2.3 -22 1757 No stop 19 09 20 =1206+416 12 15 31 78.0 184.7 0.1 3.7 98 1788 19 07 21 19 09 20 NGC4151 12 15 31 76.1 183.2 0.1 2.5 -21 1788 No stop 19 13 20 --- 12 19 32 76.0 186.4 0.1 5.0 219 1850 19 09 21 19 14 00 J1209+4119 12 20 12 77.9 188.9 0.2 7.0 15 1850 19 14 00 19 16 00 =1206+416 12 22 12 77.8 190.6 0.2 8.4 120 1881 19 14 01 Schedule for JODRELL2 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Mon 10 Jun 2019 Day 161 --- 19 16 00 NGC4151 12 22 12 75.9 188.6 0.2 6.6 -23 1881 No stop 19 20 00 --- 12 26 13 75.8 191.7 0.2 9.0 217 1943 19 16 01 19 20 00 J1209+4119 12 26 13 77.7 194.1 0.3 11.2 -28 1943 No stop 19 22 00 =1206+416 12 28 13 77.6 195.9 0.3 12.6 92 1974 19 20 01 19 22 00 NGC4151 12 28 13 75.8 193.3 0.3 10.2 -26 1974 No stop 19 26 00 --- 12 32 14 75.6 196.3 0.3 12.6 214 2035 19 22 01 19 26 40 J1209+4119 12 32 54 77.4 199.8 0.4 15.6 9 2035 19 26 40 19 28 40 =1206+416 12 34 54 77.3 201.5 0.4 16.9 120 2066 19 26 41 19 28 40 NGC4151 12 34 54 75.5 198.4 0.4 14.1 -28 2066 No stop 19 32 40 --- 12 38 55 75.3 201.3 0.5 16.3 212 2128 19 28 41 19 32 40 J1209+4119 12 38 55 77.1 204.7 0.5 19.4 -33 2128 No stop 19 34 40 =1206+416 12 40 55 76.9 206.3 0.5 20.6 87 2159 19 32 41 19 34 40 NGC4151 12 40 55 75.2 202.8 0.5 17.4 -30 2159 No stop 19 38 40 --- 12 44 56 74.9 205.7 0.6 19.6 210 2221 19 34 41 19 39 20 J1209+4119 12 45 36 76.6 209.8 0.6 23.3 6 2221 19 39 20 19 41 20 =1206+416 12 47 37 76.5 211.3 0.6 24.4 120 2252 19 39 21 19 41 20 NGC4151 12 47 37 74.8 207.5 0.6 20.9 -31 2252 No stop 19 45 20 --- 12 51 37 74.5 210.2 0.7 22.9 209 2314 19 41 21 19 45 20 J1209+4119 12 51 37 76.1 214.2 0.7 26.6 -35 2314 No stop 19 47 20 =1206+416 12 53 37 76.0 215.6 0.7 27.6 85 2345 19 45 21 19 47 20 NGC4151 12 53 37 74.3 211.5 0.7 23.9 -32 2345 No stop 19 51 20 --- 12 57 38 74.0 214.1 0.8 25.7 208 2406 19 47 21 19 52 00 J1209+4119 12 58 18 75.5 218.7 0.8 29.9 4 2406 19 52 00 19 54 00 =1206+416 13 00 19 75.3 220.0 0.8 30.8 120 2437 19 52 01 19 54 00 NGC4151 13 00 19 73.8 215.8 0.8 26.9 -33 2437 No stop 19 58 00 --- 13 04 19 73.4 218.2 0.9 28.6 207 2499 19 54 01 19 58 00 J1209+4119 13 04 19 74.9 222.5 0.9 32.5 -36 2499 No stop 20 00 00 =1206+416 13 06 20 74.7 223.7 0.9 33.4 84 2530 19 58 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess219.K2048 --- 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: 5 Station: JODRELL2 Total bit rate: 2048 Format: VDIF 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= 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 23024.00 Net SB= L L U U L L U U L L U U L L U U IF SB = L L L L L L L L L L L L L L L L 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= U U L L U U L L U U L L U U L L IF = A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 A2 B2 The following frequency sets based on these setups were used. Frequency Set: 1 Setup file default. Used with PCAL = off LO sum= 22139.49 22139.49 22139.49 22139.49 22203.49 22203.49 22203.49 22203.49 22267.49 22267.49 22267.49 22267.49 22331.49 22331.49 22331.49 22331.49 BBC fr= 884.51 884.51 884.51 884.51 820.51 820.51 820.51 820.51 756.51 756.51 756.51 756.51 692.51 692.51 692.51 692.51 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: 1 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 30.529205 0.00 39 41 02.10308 * 39 24 21.03100 39 18 09.96813 0.00 From catalog imbedded in main SCHED input file. 1206+416 12 06 51.117947 * 12 09 22.788006 12 10 20.765794 0.17 * J1209+4119 41 36 22.62761 * 41 19 41.37011 41 13 30.75115 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 01.923103 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 24 48.76043 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 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 1.717 158.398 J1209+4119 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.933 90.198 3C286 sess219.K2048 1 2 3 4 5 6 7 8 9 10 14 15 + 0.078 11.259 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 85.8 J1209+4119 84.7 3C286 104.4 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