COVER INFORMATION Station: PICKMERE (Code Pi ) Experiment: Collimation and acceleration of the M84 jet: synergy with EVN+e-MERLIN a Exp. Code: EN016A Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Dhanya G. Nair Address: Department of Astronomy, University of Concepcion Avenida Esteban Iturra s/n Casilla 160-C Concepcion, Chile Phone: 0056-412661646 EMAIL: dhanyagnair01@gmail.com, dhanyanair@astro-udec.cl Fax: Phone during observation: Observing mode: evn Notes: 18 cm 1024 Mbps 1024 Mbps, 8x32 MHz, RCP & LCP, 2 bit sampling Schedule for PICKMERE (Code Pi ) Page 2 Collimation and acceleration of the M84 jet: synergy with EVN+e-MERLIN a 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- Next scan frequencies: 1626.49 1626.49 Next BBC frequencies: 645.51 645.51 Next scan bandwidths: 64.00 64.00 21 00 00 1156+295 07 02 17 31.9 82.9 -5.0 -42.8 0 0 21 00 00 21 04 30 --- 07 06 48 32.6 83.7 -4.9 -42.8 270 17 21 00 01 21 06 59 M84 07 09 17 16.6 90.8 -5.3 -37.8 78 17 21 06 59 21 16 59 --- 07 19 19 18.1 92.8 -5.1 -37.7 600 56 21 07 00 21 17 31 M84 07 19 51 18.2 93.0 -5.1 -37.7 28 56 21 17 31 21 27 31 --- 07 29 52 19.7 95.0 -4.9 -37.6 600 95 21 17 32 21 28 03 M84 07 30 24 19.7 95.1 -4.9 -37.6 28 95 21 28 03 21 38 03 --- 07 40 26 21.2 97.2 -4.8 -37.5 600 133 21 28 04 21 38 47 M87 07 41 10 20.1 96.5 -4.8 -37.4 25 133 21 38 47 21 41 47 --- 07 44 11 20.5 97.1 -4.8 -37.4 180 145 21 38 48 21 42 31 M84 07 44 55 21.9 98.1 -4.7 -37.4 24 145 21 42 31 21 52 31 --- 07 54 56 23.4 100.2 -4.5 -37.1 600 184 21 42 32 21 53 03 M84 07 55 29 23.4 100.3 -4.5 -37.1 28 184 21 53 03 22 03 03 --- 08 05 30 24.9 102.5 -4.3 -36.8 600 222 21 53 04 22 03 35 M84 08 06 02 25.0 102.6 -4.3 -36.7 28 222 22 03 35 22 13 35 --- 08 16 04 26.4 104.8 -4.2 -36.3 600 261 22 03 36 22 14 18 M87 08 16 47 25.3 104.0 -4.3 -36.4 24 261 22 14 18 22 17 18 --- 08 19 48 25.8 104.7 -4.2 -36.3 180 272 22 14 19 22 18 02 M84 08 20 32 27.1 105.8 -4.1 -36.1 24 272 22 18 02 22 28 02 --- 08 30 33 28.5 108.0 -3.9 -35.7 600 311 22 18 03 22 28 34 M84 08 31 05 28.6 108.1 -3.9 -35.6 28 311 22 28 34 22 38 34 --- 08 41 07 30.0 110.4 -3.8 -35.1 600 350 22 28 35 22 39 06 M84 08 41 39 30.1 110.5 -3.7 -35.0 28 350 22 39 06 22 49 06 --- 08 51 41 31.5 112.9 -3.6 -34.4 600 388 22 39 07 22 49 49 M87 08 52 24 30.4 112.0 -3.7 -34.6 24 388 22 49 49 22 52 49 --- 08 55 24 30.8 112.7 -3.6 -34.4 180 400 22 49 50 22 53 33 M84 08 56 09 32.1 113.9 -3.5 -34.1 24 400 22 53 33 23 03 33 --- 09 06 10 33.5 116.3 -3.3 -33.3 600 439 22 53 34 Schedule for PICKMERE (Code Pi ) Page 3 Collimation and acceleration of the M84 jet: synergy with EVN+e-MERLIN a 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 ---------------------------------------------------------------------------------------- --- Sat 22 Feb 2025 Day 53 --- 23 04 05 M84 09 06 42 33.5 116.5 -3.3 -33.3 28 439 23 04 05 23 14 05 --- 09 16 44 34.9 119.0 -3.2 -32.4 600 477 23 04 06 23 14 37 M84 09 17 16 34.9 119.1 -3.2 -32.4 28 477 23 14 37 23 19 07 --- 09 21 47 35.5 120.2 -3.1 -32.0 270 495 23 14 38 23 19 50 M87 09 22 30 34.4 119.3 -3.2 -32.2 24 495 23 19 50 23 22 50 --- 09 25 30 34.8 120.0 -3.1 -32.0 180 506 23 19 51 23 25 30 1156+295 09 28 11 53.2 115.7 -2.5 -38.1 83 506 23 25 30 23 30 00 --- 09 32 42 53.8 117.0 -2.5 -37.6 270 524 23 25 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.L1024 --- 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: PICKMERE Total bit rate: 512 Format: VDIF Bits per sample: 2 Sample rate:128.000 Number of channels: 2 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2272.00 2272.00 Net SB= U U IF SB = L L Pol. = RCP LCP BBC = 1 9 BBC SB= L L IF = A1 B1 The following frequency sets based on these setups were used. Frequency Set: 10 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 BBC fr= 645.51 645.51 Bandwd= 64.00 64.00 Matching frequency sets: 10 11 12 13 14 Track assignments are: track1= 1, 2 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * M84 12 22 31.582023 * 12 25 03.743339 12 26 21.521627 0.00 13 09 49.76860 * 12 53 13.13921 12 44 41.09172 0.00 From catalog imbedded in main SCHED input file. * M87 12 28 17.569282 * 12 30 49.423384 12 32 07.025228 0.00 12 40 01.74886 * 12 23 28.04369 12 14 57.33582 0.00 From catalog imbedded in main SCHED input file. * 1156+295 11 56 57.786213 * 11 59 31.833914 12 00 50.873467 0.00 29 31 25.73872 * 29 14 43.82682 29 06 08.35408 0.00 From catalog imbedded in main SCHED input file. 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 M84 sess125.L1024 1 2 3 4 5 6 7 8 9 10 1.908 171.757 M87 sess125.L1024 1 2 3 4 5 6 7 8 9 10 0.200 18.200 1156+295 sess125.L1024 1 2 3 4 5 6 7 8 9 10 0.150 13.650 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) M84 150.3 M87 148.9 1156+295 150.6 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