COVER INFORMATION Station: WSTRBORK (Code Wb ) Experiment: Collimation and acceleration of the M84 jet: synergy with EVN+e-MERLIN a Exp. Code: EN016C 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: 3.6 cm 2048 Mbps 2048 Mbps, 16x32 MHz, RCP & LCP, 2 bit sampling Schedule for WSTRBORK (Code Wb ) 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 ---------------------------------------------------------------------------------------- --- Wed 5 Mar 2025 Day 64 --- Next scan frequencies: 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 Next BBC frequencies: 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 20 30 00 1156+295 07 51 43 39.3 92.3 -4.2 0.0 0 0 20 30 00 20 34 30 --- 07 56 14 40.0 93.2 -4.1 0.0 270 35 20 30 01 20 36 13 M84 07 57 58 23.9 100.7 -4.5 0.0 35 35 20 36 13 20 46 13 --- 08 07 59 25.4 102.8 -4.3 0.0 600 112 20 36 14 20 46 45 M84 08 08 31 25.4 103.0 -4.3 0.0 21 112 20 46 45 20 56 45 --- 08 18 33 26.9 105.1 -4.1 0.0 600 189 20 46 46 20 57 17 M84 08 19 05 27.0 105.3 -4.1 0.0 21 189 20 57 17 21 07 17 --- 08 29 07 28.4 107.5 -4.0 0.0 600 267 20 57 18 21 08 00 M87 08 29 50 27.3 106.7 -4.0 0.0 25 267 21 08 00 21 11 00 --- 08 32 50 27.7 107.4 -4.0 0.0 180 290 21 08 01 21 11 44 M84 08 33 34 29.1 108.5 -3.9 0.0 26 290 21 11 44 21 21 44 --- 08 43 36 30.5 110.8 -3.7 0.0 600 367 21 11 45 21 22 16 M84 08 44 08 30.6 110.9 -3.7 0.0 21 367 21 22 16 21 32 16 --- 08 54 10 32.0 113.2 -3.5 0.0 600 444 21 22 17 21 32 48 M84 08 54 42 32.0 113.4 -3.5 0.0 21 444 21 32 48 21 42 48 --- 09 04 43 33.4 115.8 -3.4 0.0 600 522 21 32 49 21 43 31 M87 09 05 27 32.3 114.9 -3.4 0.0 25 522 21 43 31 21 46 31 --- 09 08 27 32.7 115.6 -3.4 0.0 180 545 21 43 32 21 47 15 M84 09 09 11 34.0 116.9 -3.3 0.0 26 545 21 47 15 21 57 15 --- 09 19 13 35.4 119.4 -3.1 0.0 600 622 21 47 16 21 57 47 M84 09 19 45 35.4 119.5 -3.1 0.0 21 622 21 57 47 22 07 47 --- 09 29 47 36.7 122.0 -2.9 0.0 600 699 21 57 48 22 08 19 M84 09 30 19 36.8 122.2 -2.9 0.0 21 699 22 08 19 22 18 19 --- 09 40 20 38.1 124.8 -2.8 0.0 600 777 22 08 20 22 19 04 M87 09 41 05 37.0 123.8 -2.9 0.0 27 777 22 19 04 22 22 04 --- 09 44 06 37.4 124.6 -2.8 0.0 180 800 22 19 05 22 22 48 M84 09 44 50 38.6 126.0 -2.7 0.0 26 800 22 22 48 22 32 48 --- 09 54 52 39.8 128.8 -2.5 0.0 600 877 22 22 49 Schedule for WSTRBORK (Code Wb ) 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 ---------------------------------------------------------------------------------------- --- Wed 5 Mar 2025 Day 64 --- 22 33 20 M84 09 55 24 39.9 128.9 -2.5 0.0 21 877 22 33 20 22 43 20 --- 10 05 25 41.0 131.8 -2.3 0.0 600 955 22 33 21 22 43 52 M84 10 05 57 41.1 131.9 -2.3 0.0 21 955 22 43 52 22 49 52 --- 10 11 58 41.7 133.7 -2.2 0.0 360 1001 22 43 53 22 50 36 M87 10 12 43 40.8 132.5 -2.3 0.0 26 1001 22 50 36 22 53 36 --- 10 15 43 41.1 133.4 -2.3 0.0 180 1024 22 50 37 22 55 30 1156+295 10 17 37 59.6 131.3 -1.7 0.0 45 1024 22 55 30 23 00 00 --- 10 22 08 60.1 133.0 -1.6 0.0 270 1059 22 55 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess125.X2048 --- 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: 10 Station: WSTRBORK Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 8012.00 Net SB= L L U U L L U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= L L U U L L U U IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 1 Setup file default. Used with PCAL = off LO sum= 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 BBC fr= 371.49 371.49 371.49 371.49 435.49 435.49 435.49 435.49 Bandwd= 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 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 21.712298 0.00 13 09 49.76860 * 12 53 13.13921 12 44 40.84073 0.00 From catalog imbedded in main SCHED input file. * M87 12 28 17.569282 * 12 30 49.423384 12 32 07.221475 0.00 12 40 01.74886 * 12 23 28.04369 12 14 57.04204 0.00 From catalog imbedded in main SCHED input file. * 1156+295 11 56 57.786213 * 11 59 31.833914 12 00 51.051072 0.00 29 31 25.73872 * 29 14 43.82682 29 06 09.19600 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.X2048 1 2 3 4 5 6 7 8 9 10 11 1.933 104.168 M87 sess125.X2048 1 2 3 4 5 6 7 8 9 10 11 0.200 11.000 1156+295 sess125.X2048 1 2 3 4 5 6 7 8 9 10 11 0.150 8.250 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 159.2 M87 158.0 1156+295 153.3 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