COVER INFORMATION Station: DARNHALL (Code Da ) Experiment: A dual AGN candidate with 0.13 arcsec separation Exp. Code: EG109A Schedule Version: 2.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Krisztina Gabanyi Address: MTA-ELTE Extragalactic Astrophysics Research Group ELTE TTK, Pazmany Peter setany 1/a H-1117 Budapest Hungary Phone: +36 1 3919322 EMAIL: krisztina.g@gmail.com Fax: Phone during observation: Observing mode: 6 cm 2 Gb/s Notes: Schedule for DARNHALL (Code Da ) Page 2 A dual AGN candidate with 0.13 arcsec separation 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 26 Feb 2020 Day 57 --- Next scan frequencies: 4958.49 4958.49 Next BBC frequencies: 705.51 705.51 Next scan bandwidths: 64.00 64.00 19 00 00 J0956+2515 05 14 15 31.2 88.8 -4.7 -41.5 0 0 19 00 00 19 07 00 =0953+254 05 21 16 32.2 90.2 -4.6 -41.5 420 27 19 00 01 19 08 25 J1007+1356 05 22 41 22.1 96.4 -4.8 -37.9 32 27 19 08 25 19 09 35 =1004+141 05 23 52 22.3 96.6 -4.7 -37.8 70 32 19 08 26 19 09 35 J1010+1413 05 23 52 22.1 95.9 -4.8 -38.0 -15 32 No stop 19 13 05 --- 05 27 22 22.6 96.6 -4.7 -37.9 195 45 19 09 36 19 13 05 J1007+1356 05 27 22 22.8 97.3 -4.7 -37.8 -16 45 No stop 19 14 35 =1004+141 05 28 52 23.0 97.7 -4.7 -37.7 74 51 19 13 06 19 14 35 J1010+1413 05 28 52 22.8 96.9 -4.7 -37.9 -15 51 No stop 19 18 05 --- 05 32 23 23.3 97.6 -4.7 -37.8 195 64 19 14 36 19 18 50 J1007+1356 05 33 08 23.6 98.5 -4.6 -37.6 29 64 19 18 50 19 20 00 =1004+141 05 34 18 23.8 98.8 -4.6 -37.6 70 69 19 18 51 19 20 00 J1010+1413 05 34 18 23.6 98.0 -4.6 -37.8 -15 69 No stop 19 23 30 --- 05 37 49 24.1 98.8 -4.6 -37.7 195 82 19 20 01 19 23 30 J1007+1356 05 37 49 24.3 99.5 -4.5 -37.5 -16 82 No stop 19 25 00 =1004+141 05 39 19 24.6 99.8 -4.5 -37.5 74 88 19 23 31 19 25 00 J1010+1413 05 39 19 24.4 99.1 -4.5 -37.6 -15 88 No stop 19 28 30 --- 05 42 50 24.9 99.8 -4.5 -37.5 195 102 19 25 01 19 29 15 J1007+1356 05 43 35 25.2 100.8 -4.4 -37.4 29 102 19 29 15 19 30 25 =1004+141 05 44 45 25.4 101.0 -4.4 -37.3 70 106 19 29 16 19 30 25 J1010+1413 05 44 45 25.2 100.2 -4.4 -37.5 -15 106 No stop 19 33 55 --- 05 48 16 25.7 101.0 -4.4 -37.4 195 120 19 30 26 19 33 55 J1007+1356 05 48 16 25.9 101.8 -4.3 -37.2 -16 120 No stop 19 35 25 =1004+141 05 49 46 26.1 102.1 -4.3 -37.1 74 126 19 33 56 19 35 25 J1010+1413 05 49 46 25.9 101.3 -4.4 -37.3 -15 126 No stop 19 38 55 --- 05 53 16 26.4 102.1 -4.3 -37.2 195 139 19 35 26 19 39 40 J1007+1356 05 54 02 26.7 103.0 -4.2 -37.0 29 139 19 39 40 19 40 50 =1004+141 05 55 12 26.9 103.3 -4.2 -36.9 70 144 19 39 41 Schedule for DARNHALL (Code Da ) Page 3 A dual AGN candidate with 0.13 arcsec separation 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 26 Feb 2020 Day 57 --- 19 40 50 J1010+1413 05 55 12 26.7 102.5 -4.3 -37.1 -15 144 No stop 19 44 20 --- 05 58 42 27.2 103.2 -4.2 -37.0 195 157 19 40 51 19 44 20 J1007+1356 05 58 42 27.4 104.0 -4.2 -36.8 -16 157 No stop 19 45 50 =1004+141 06 00 13 27.6 104.4 -4.1 -36.7 74 163 19 44 21 19 45 50 J1010+1413 06 00 13 27.4 103.6 -4.2 -36.9 -15 163 No stop 19 49 20 --- 06 03 43 28.0 104.3 -4.1 -36.8 195 176 19 45 51 19 50 05 J1007+1356 06 04 28 28.2 105.3 -4.1 -36.6 29 176 19 50 05 19 51 15 =1004+141 06 05 38 28.4 105.5 -4.1 -36.5 70 181 19 50 06 19 51 15 J1010+1413 06 05 38 28.2 104.8 -4.1 -36.7 -16 181 No stop 19 54 45 --- 06 09 09 28.7 105.5 -4.0 -36.6 194 195 19 51 16 19 54 45 J1007+1356 06 09 09 28.9 106.3 -4.0 -36.3 -16 195 No stop 19 56 15 =1004+141 06 10 39 29.1 106.7 -4.0 -36.3 74 200 19 54 46 19 56 15 J1010+1413 06 10 39 29.0 105.9 -4.0 -36.5 -16 200 No stop 19 59 45 --- 06 14 10 29.5 106.7 -4.0 -36.3 194 214 19 56 16 20 00 30 J1007+1356 06 14 55 29.7 107.6 -3.9 -36.1 28 214 20 00 30 20 01 40 =1004+141 06 16 05 29.9 107.9 -3.9 -36.0 70 218 20 00 31 20 01 40 J1010+1413 06 16 05 29.7 107.1 -3.9 -36.2 -16 218 No stop 20 05 10 --- 06 19 36 30.2 107.9 -3.9 -36.0 194 232 20 01 41 20 05 10 J1007+1356 06 19 36 30.4 108.7 -3.8 -35.8 -17 232 No stop 20 06 40 =1004+141 06 21 06 30.6 109.0 -3.8 -35.7 73 238 20 05 11 20 06 40 J1010+1413 06 21 06 30.5 108.2 -3.8 -36.0 -16 238 No stop 20 10 10 --- 06 24 37 31.0 109.0 -3.8 -35.8 194 251 20 06 41 20 10 55 J1007+1356 06 25 22 31.2 110.0 -3.7 -35.5 28 251 20 10 55 20 12 05 =1004+141 06 26 32 31.4 110.3 -3.7 -35.4 70 256 20 10 56 20 12 05 J1010+1413 06 26 32 31.2 109.5 -3.7 -35.7 -16 256 No stop 20 15 35 --- 06 30 02 31.7 110.3 -3.7 -35.4 194 269 20 12 06 20 15 35 J1007+1356 06 30 02 31.9 111.1 -3.6 -35.2 -17 269 No stop 20 17 05 =1004+141 06 31 33 32.1 111.5 -3.6 -35.1 73 275 20 15 36 20 17 05 J1010+1413 06 31 33 31.9 110.6 -3.7 -35.4 -16 275 No stop 20 20 35 --- 06 35 03 32.4 111.5 -3.6 -35.1 194 289 20 17 06 Schedule for DARNHALL (Code Da ) Page 4 A dual AGN candidate with 0.13 arcsec separation 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 26 Feb 2020 Day 57 --- 20 21 20 J1007+1356 06 35 48 32.7 112.5 -3.5 -34.8 28 289 20 21 20 20 22 30 =1004+141 06 36 59 32.8 112.7 -3.5 -34.7 70 293 20 21 21 20 22 30 J1010+1413 06 36 59 32.7 111.9 -3.6 -35.0 -16 293 No stop 20 26 00 --- 06 40 29 33.2 112.7 -3.5 -34.8 194 307 20 22 31 20 26 00 J1007+1356 06 40 29 33.3 113.6 -3.5 -34.5 -17 307 No stop 20 27 30 =1004+141 06 41 59 33.5 113.9 -3.4 -34.4 73 312 20 26 01 20 27 30 J1010+1413 06 41 59 33.4 113.1 -3.5 -34.7 -16 312 No stop 20 31 00 --- 06 45 30 33.9 113.9 -3.4 -34.4 194 326 20 27 31 20 31 45 J1007+1356 06 46 15 34.1 115.0 -3.4 -34.0 28 326 20 31 45 20 32 55 =1004+141 06 47 25 34.3 115.2 -3.4 -34.0 70 330 20 31 46 20 32 55 J1010+1413 06 47 25 34.1 114.4 -3.4 -34.3 -16 330 No stop 20 36 25 --- 06 50 56 34.6 115.3 -3.3 -34.0 194 344 20 32 56 20 36 25 J1007+1356 06 50 56 34.7 116.1 -3.3 -33.7 -17 344 No stop 20 37 55 =1004+141 06 52 26 34.9 116.5 -3.3 -33.6 73 350 20 36 26 20 37 55 J1010+1413 06 52 26 34.8 115.6 -3.3 -33.9 -16 350 No stop 20 41 25 --- 06 55 57 35.3 116.5 -3.3 -33.6 194 363 20 37 56 20 42 10 J1007+1356 06 56 42 35.5 117.5 -3.2 -33.2 28 363 20 42 10 20 43 20 =1004+141 06 57 52 35.7 117.8 -3.2 -33.1 70 368 20 42 11 20 43 20 J1010+1413 06 57 52 35.5 117.0 -3.2 -33.4 -16 368 No stop 20 46 50 --- 07 01 23 36.0 117.8 -3.2 -33.1 194 381 20 43 21 20 46 50 J1007+1356 07 01 23 36.1 118.7 -3.1 -32.8 -17 381 No stop 20 48 20 =1004+141 07 02 53 36.3 119.1 -3.1 -32.7 73 387 20 46 51 20 48 20 J1010+1413 07 02 53 36.2 118.2 -3.1 -33.0 -16 387 No stop 20 51 50 --- 07 06 23 36.7 119.1 -3.1 -32.7 194 401 20 48 21 20 51 50 J1007+1356 07 06 23 36.8 120.0 -3.0 -32.3 -17 401 No stop 20 53 20 =1004+141 07 07 54 37.0 120.4 -3.0 -32.2 73 406 20 51 51 20 54 00 J0956+2515 07 08 34 47.8 114.7 -2.8 -37.0 -16 406 20 54 00 21 00 00 =0953+254 07 14 35 48.7 116.3 -2.7 -36.4 344 430 20 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess120.C2048 --- 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: 16 Station: DARNHALL 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= 5664.00 5664.00 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: 15 Setup file default. Used with PCAL = off LO sum= 4958.49 4958.49 BBC fr= 705.51 705.51 Bandwd= 64.00 64.00 Matching frequency sets: 15 16 17 18 19 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) * J1010+1413 10 07 41.257077 * 10 10 22.957500 10 11 28.322132 0.00 14 27 47.72580 * 14 13 00.87500 14 07 00.31895 0.00 From catalog imbedded in main SCHED input file. 0953+254 09 53 59.738485 * 09 56 49.875379 09 57 58.619738 0.11 * J0956+2515 25 29 33.58574 * 25 15 16.04984 25 09 27.93847 0.10 /home/guest/rmc/SCHED/sched11.5/catalogs/rfc_2018a_cat.key rfc_2018a Petrov and Kovalev, in preparation 29729 observations 1004+141 10 04 59.783934 * 10 07 41.498088 10 08 46.866828 0.10 * J1007+1356 14 11 10.91501 * 13 56 29.60078 13 50 31.24655 0.10 /home/guest/rmc/SCHED/sched11.5/catalogs/rfc_2018a_cat.key rfc_2018a Petrov and Kovalev, in preparation 4729 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 J1010+1413 sess120.C2048 1 2 3 4 5 6 7 8 9 10 14 15 1.167 182.230 J0956+2515 sess120.C2048 1 2 3 4 5 6 7 8 9 10 14 15 0.217 36.393 J1007+1356 sess120.C2048 1 2 3 4 5 6 7 8 9 10 14 15 0.469 70.622 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) J1010+1413 171.6 J0956+2515 161.0 J1007+1356 171.3 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