COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: Characterizing OCRs in dwarf galaxies Exp. Code: ev026g Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Dany Vohl Address: Anton Pannekoek Institute for Astronomy, University of Amsterdam 1098 XH Amsterdam Amsterdam The Netherlands Phone: +31 6 1887 9982 EMAIL: d.vohl@uva.nl Fax: Phone during observation: +31 6 1887 9982 Observing mode: vlbi Notes: # Please, make sure PHASE CAL is OFF # COVER LETTER: This observation is to observe ILT ILTJ231715.38+184339.0 first identified in the LoTSS DR2 data as potential analogue to persistent radio sources associated to some fast radio bursts. With the observation, we wish to constrain it s source size, and evalute if the radio emission is due to star formation processes or not. Schedule for JODRELL1 (Code Jb ) Page 2 Characterizing OCRs in dwarf galaxies 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 29 May 2024 Day 150 --- ---------- Fringe-finder ---------- Next scan frequencies: 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 Next BBC frequencies: 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 02 08 10 J2253+1608 18 27 20 26.7 98.6 -4.5 -38.1 0 0 02 08 10 02 12 20 =3C454.3 18 31 31 27.3 99.5 -4.4 -38.0 250 32 02 08 11 ---------- Going to ILTJ2317 ---------- 02 13 20 J2320+1829 18 32 31 25.3 92.5 -4.8 -39.1 16 32 02 13 20 02 15 20 =2318+182 18 34 32 25.6 92.9 -4.8 -39.1 120 48 02 13 21 02 15 20 ILTJ2317 18 34 32 26.3 93.4 -4.7 -39.1 -17 48 No stop 02 20 20 --- 18 39 32 27.1 94.5 -4.6 -39.1 283 86 02 15 21 02 22 10 ILTJ2317 18 41 23 27.3 94.8 -4.6 -39.1 102 86 02 22 10 02 27 10 --- 18 46 23 28.1 95.9 -4.5 -39.0 300 125 02 22 11 02 27 40 J2320+1829 18 46 54 27.5 95.4 -4.6 -39.0 13 125 02 27 40 02 29 00 =2318+182 18 48 14 27.7 95.7 -4.6 -38.9 80 135 02 27 41 02 29 00 ILTJ2317 18 48 14 28.4 96.3 -4.5 -39.0 -17 135 No stop 02 34 00 --- 18 53 15 29.1 97.3 -4.4 -38.9 283 174 02 29 01 02 40 30 J2320+1829 18 59 46 29.4 98.1 -4.4 -38.7 373 174 02 40 30 02 41 50 =2318+182 19 01 06 29.6 98.4 -4.3 -38.7 80 184 02 40 31 02 41 50 ILTJ2317 19 01 06 30.3 99.0 -4.3 -38.7 -17 184 No stop 02 46 50 --- 19 06 07 31.0 100.1 -4.2 -38.5 283 223 02 41 51 02 47 20 J2320+1829 19 06 37 30.4 99.6 -4.3 -38.5 13 223 02 47 20 02 48 40 =2318+182 19 07 57 30.6 99.9 -4.2 -38.5 80 233 02 47 21 02 48 40 ILTJ2317 19 07 57 31.3 100.5 -4.2 -38.5 -17 233 No stop 02 53 40 --- 19 12 58 32.0 101.5 -4.1 -38.3 283 272 02 48 41 02 55 30 ILTJ2317 19 14 48 32.3 102.0 -4.1 -38.2 102 272 02 55 30 03 00 30 --- 19 19 49 33.0 103.1 -4.0 -38.0 300 310 02 55 31 03 01 00 J2320+1829 19 20 19 32.4 102.6 -4.0 -38.1 13 310 03 01 00 03 02 20 =2318+182 19 21 39 32.6 102.9 -4.0 -38.0 80 321 03 01 01 03 02 20 ILTJ2317 19 21 39 33.3 103.5 -3.9 -38.0 -17 321 No stop 03 07 20 --- 19 26 40 34.0 104.6 -3.9 -37.7 283 359 03 02 21 Schedule for JODRELL1 (Code Jb ) Page 3 Characterizing OCRs in dwarf galaxies 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 29 May 2024 Day 150 --- 03 13 50 J2320+1829 19 33 11 34.3 105.4 -3.8 -37.5 373 359 03 13 50 03 15 10 =2318+182 19 34 31 34.5 105.8 -3.8 -37.4 80 370 03 13 51 03 15 10 ILTJ2317 19 34 31 35.2 106.4 -3.7 -37.4 -17 370 No stop 03 20 10 --- 19 39 32 35.9 107.5 -3.6 -37.1 283 408 03 15 11 03 20 40 J2320+1829 19 40 02 35.3 107.0 -3.7 -37.2 13 408 03 20 40 03 22 00 =2318+182 19 41 23 35.4 107.3 -3.7 -37.1 80 419 03 20 41 ---------- Fringe-finder ---------- 03 23 00 J2253+1608 19 42 23 37.4 115.7 -3.2 -34.2 11 419 03 23 00 03 27 00 =3C454.3 19 46 23 37.9 116.7 -3.1 -33.8 240 450 03 23 01 ---------- Going to ILTJ2317 ---------- 03 28 00 J2320+1829 19 47 23 36.3 108.7 -3.6 -36.7 12 450 03 28 00 03 30 00 =2318+182 19 49 24 36.6 109.2 -3.5 -36.6 120 465 03 28 01 03 30 00 ILTJ2317 19 49 24 37.3 109.9 -3.5 -36.5 -17 465 No stop 03 35 00 --- 19 54 25 38.0 111.1 -3.4 -36.2 283 504 03 30 01 03 36 50 ILTJ2317 19 56 15 38.2 111.5 -3.4 -36.0 102 504 03 36 50 03 41 50 --- 20 01 16 38.9 112.8 -3.3 -35.7 300 542 03 36 51 03 42 20 J2320+1829 20 01 46 38.3 112.2 -3.3 -35.8 13 542 03 42 20 03 43 40 =2318+182 20 03 06 38.5 112.5 -3.3 -35.7 80 553 03 42 21 03 43 40 ILTJ2317 20 03 06 39.2 113.2 -3.3 -35.5 -17 553 No stop 03 48 40 --- 20 08 07 39.9 114.5 -3.2 -35.1 283 591 03 43 41 03 55 10 J2320+1829 20 14 38 40.1 115.4 -3.1 -34.8 373 591 03 55 10 03 56 30 =2318+182 20 15 58 40.3 115.7 -3.1 -34.7 80 602 03 55 11 03 56 30 ILTJ2317 20 15 58 40.9 116.5 -3.0 -34.5 -17 602 No stop 04 01 30 --- 20 20 59 41.6 117.8 -3.0 -34.0 283 640 03 56 31 04 02 00 J2320+1829 20 21 29 41.0 117.2 -3.0 -34.2 13 640 04 02 00 04 03 20 =2318+182 20 22 49 41.2 117.5 -3.0 -34.1 80 651 04 02 01 04 03 20 ILTJ2317 20 22 49 41.8 118.3 -2.9 -33.9 -17 651 No stop 04 08 20 --- 20 27 50 42.5 119.6 -2.8 -33.4 283 689 04 03 21 04 10 10 ILTJ2317 20 29 40 42.7 120.1 -2.8 -33.2 102 689 04 10 10 04 15 10 --- 20 34 41 43.4 121.4 -2.7 -32.7 300 728 04 10 11 Schedule for JODRELL1 (Code Jb ) Page 4 Characterizing OCRs in dwarf galaxies 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 29 May 2024 Day 150 --- 04 15 40 J2320+1829 20 35 11 42.8 120.8 -2.8 -32.9 13 728 04 15 40 04 17 00 =2318+182 20 36 32 43.0 121.2 -2.8 -32.7 80 738 04 15 41 04 17 00 ILTJ2317 20 36 32 43.6 121.9 -2.7 -32.5 -17 738 No stop 04 22 00 --- 20 41 32 44.2 123.3 -2.6 -31.9 283 777 04 17 01 04 28 30 J2320+1829 20 48 03 44.4 124.4 -2.6 -31.4 373 777 04 28 30 04 29 50 =2318+182 20 49 24 44.6 124.7 -2.5 -31.3 80 787 04 28 31 04 29 50 ILTJ2317 20 49 24 45.2 125.6 -2.5 -31.0 -18 787 No stop 04 34 50 --- 20 54 24 45.8 127.0 -2.4 -30.3 282 826 04 29 51 04 35 20 J2320+1829 20 54 55 45.2 126.3 -2.5 -30.6 13 826 04 35 20 04 36 40 =2318+182 20 56 15 45.4 126.7 -2.4 -30.4 80 836 04 35 21 04 36 40 ILTJ2317 20 56 15 46.0 127.6 -2.4 -30.1 -18 836 No stop 04 41 40 --- 21 01 16 46.6 129.1 -2.3 -29.4 282 875 04 36 41 04 43 30 ILTJ2317 21 03 06 46.8 129.6 -2.3 -29.2 101 875 04 43 30 04 48 30 --- 21 08 07 47.4 131.1 -2.2 -28.4 300 913 04 43 31 04 49 00 J2320+1829 21 08 37 46.9 130.4 -2.2 -28.8 13 913 04 49 00 04 50 20 =2318+182 21 09 57 47.0 130.8 -2.2 -28.6 80 924 04 49 01 04 50 20 ILTJ2317 21 09 57 47.6 131.7 -2.1 -28.2 -18 924 No stop 04 55 20 --- 21 14 58 48.2 133.3 -2.1 -27.4 282 962 04 50 21 05 01 50 J2320+1829 21 21 29 48.3 134.4 -2.0 -26.8 372 962 05 01 50 05 03 10 =2318+182 21 22 49 48.4 134.8 -2.0 -26.6 80 973 05 01 51 05 03 10 ILTJ2317 21 22 49 49.0 135.8 -1.9 -26.2 -19 973 No stop 05 08 10 --- 21 27 50 49.5 137.4 -1.8 -25.3 281 1011 05 03 11 05 08 40 J2320+1829 21 28 20 49.0 136.6 -1.9 -25.7 12 1011 05 08 40 05 10 00 =2318+182 21 29 40 49.1 137.0 -1.9 -25.5 80 1022 05 08 41 05 10 00 ILTJ2317 21 29 40 49.7 138.0 -1.8 -25.0 -19 1022 No stop 05 15 00 --- 21 34 41 50.2 139.7 -1.7 -24.1 281 1060 05 10 01 05 16 50 ILTJ2317 21 36 31 50.4 140.3 -1.7 -23.8 101 1060 05 16 50 05 21 50 --- 21 41 32 50.8 142.0 -1.6 -22.9 300 1099 05 16 51 05 22 20 J2320+1829 21 42 02 50.3 141.2 -1.7 -23.3 12 1099 05 22 20 05 23 40 =2318+182 21 43 22 50.5 141.6 -1.6 -23.1 80 1109 05 22 21 Schedule for JODRELL1 (Code Jb ) Page 5 Characterizing OCRs in dwarf galaxies 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 29 May 2024 Day 150 --- 05 23 40 ILTJ2317 21 43 22 51.0 142.7 -1.6 -22.5 -19 1109 No stop 05 28 40 --- 21 48 23 51.5 144.4 -1.5 -21.6 281 1148 05 23 41 05 35 10 J2320+1829 21 54 54 51.5 145.6 -1.5 -20.9 371 1148 05 35 10 05 36 30 =2318+182 21 56 15 51.6 146.1 -1.4 -20.6 80 1158 05 35 11 05 36 30 ILTJ2317 21 56 15 52.1 147.2 -1.4 -20.0 -20 1158 No stop 05 41 30 --- 22 01 15 52.5 149.1 -1.3 -19.0 280 1197 05 36 31 05 42 00 J2320+1829 22 01 46 52.1 148.1 -1.3 -19.5 11 1197 05 42 00 05 43 20 =2318+182 22 03 06 52.2 148.6 -1.3 -19.2 80 1207 05 42 01 05 43 20 ILTJ2317 22 03 06 52.7 149.7 -1.3 -18.6 -20 1207 No stop 05 48 20 --- 22 08 07 53.0 151.6 -1.2 -17.5 280 1246 05 43 21 05 50 10 ILTJ2317 22 09 57 53.1 152.3 -1.1 -17.1 101 1246 05 50 10 05 55 10 --- 22 14 58 53.5 154.2 -1.1 -16.0 300 1284 05 50 11 05 55 40 J2320+1829 22 15 28 53.1 153.2 -1.1 -16.6 11 1284 05 55 40 05 57 00 =2318+182 22 16 48 53.1 153.7 -1.1 -16.3 80 1295 05 55 41 05 57 00 ILTJ2317 22 16 48 53.6 154.9 -1.0 -15.6 -20 1295 No stop 06 02 00 --- 22 21 49 53.9 156.9 -0.9 -14.4 280 1333 05 57 01 06 08 30 J2320+1829 22 28 20 53.9 158.1 -0.9 -13.6 371 1333 06 08 30 06 09 50 =2318+182 22 29 40 53.9 158.6 -0.9 -13.3 80 1344 06 08 31 06 09 50 ILTJ2317 22 29 40 54.3 159.9 -0.8 -12.5 -21 1344 No stop 06 14 50 --- 22 34 41 54.6 161.9 -0.7 -11.3 279 1382 06 09 51 06 15 20 J2320+1829 22 35 11 54.2 160.8 -0.8 -12.0 10 1382 06 15 20 06 16 40 =2318+182 22 36 31 54.3 161.3 -0.8 -11.7 80 1393 06 15 21 06 16 40 ILTJ2317 22 36 31 54.7 162.7 -0.7 -10.9 -21 1393 No stop 06 21 40 --- 22 41 32 54.9 164.7 -0.6 -9.6 279 1431 06 16 41 06 23 30 ILTJ2317 22 43 22 55.0 165.4 -0.6 -9.1 101 1431 06 23 30 06 28 30 --- 22 48 23 55.1 167.5 -0.5 -7.9 300 1470 06 23 31 06 29 00 J2320+1829 22 48 53 54.8 166.3 -0.6 -8.6 10 1470 06 29 00 06 30 20 =2318+182 22 50 13 54.8 166.9 -0.5 -8.3 80 1480 06 29 01 06 30 20 ILTJ2317 22 50 13 55.2 168.2 -0.5 -7.4 -21 1480 No stop 06 35 20 --- 22 55 14 55.3 170.3 -0.4 -6.1 279 1519 06 30 21 Schedule for JODRELL1 (Code Jb ) Page 6 Characterizing OCRs in dwarf galaxies 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 29 May 2024 Day 150 --- 06 41 50 J2320+1829 23 01 45 55.2 171.6 -0.3 -5.3 370 1519 06 41 50 06 43 10 =2318+182 23 03 06 55.2 172.1 -0.3 -5.0 80 1529 06 41 51 06 43 10 ILTJ2317 23 03 06 55.5 173.6 -0.3 -4.1 -21 1529 No stop 06 48 10 --- 23 08 06 55.6 175.7 -0.2 -2.7 279 1568 06 43 11 06 48 40 J2320+1829 23 08 36 55.3 174.4 -0.2 -3.5 10 1568 06 48 40 06 50 00 =2318+182 23 09 57 55.3 175.0 -0.2 -3.2 80 1578 06 48 41 ---------- Fringe-finder ---------- 06 56 00 J2253+1608 23 15 58 52.8 188.3 0.3 5.1 299 1578 06 56 00 07 00 00 =3C454.3 23 19 58 52.7 189.9 0.4 6.1 240 1609 06 56 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess224.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: 3 Station: JODRELL1 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= 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 2272.00 Net SB= L L U U L L U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 9 1 9 2 10 2 10 BBC SB= U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 14 Setup file default. Used with PCAL = off LO sum= 1626.49 1626.49 1626.49 1626.49 1690.49 1690.49 1690.49 1690.49 BBC fr= 645.51 645.51 645.51 645.51 581.51 581.51 581.51 581.51 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 14 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) * ILTJ2317 23 14 45.892345 * 23 17 15.380000 23 18 27.698821 0.00 18 27 15.44487 * 18 43 39.10000 18 51 27.48916 0.00 From catalog imbedded in main SCHED input file. * B2319+60_D 23 19 41.329180 * 23 21 55.200000 23 22 59.103077 0.00 60 08 03.45038 * 60 24 30.70000 60 32 11.63925 0.00 From catalog imbedded in main SCHED input file. 2234+282 22 34 01.728802 * 22 36 22.470847 22 37 30.696616 0.34 * J2236+2828 28 13 23.21045 * 28 28 57.41317 28 36 17.90081 0.31 J2236+28 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 91001 observations. 3C454.3 22 51 29.519739 * 22 53 57.747939 22 55 09.602203 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 16 30.32517 0.73 2251+158 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 observations. 2318+182 23 18 16.895310 * 23 20 46.775967 23 21 59.268461 0.13 * J2320+1829 18 12 59.29947 * 18 29 25.77527 18 37 15.69772 0.18 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 136 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 ILTJ2317 sess224.L1024 1 2 3 4 5 6 7 8 13 14 2.722 230.361 B2319+60_D sess224.L1024 1 2 3 4 5 6 7 8 0.075 4.831 J2236+2828 sess224.L1024 1 2 3 4 5 6 7 8 13 0.467 24.791 J2253+1608 sess224.L1024 1 2 3 4 5 6 7 8 13 14 0.203 18.433 J2320+1829 sess224.L1024 1 2 3 4 5 6 7 8 13 14 0.972 82.780 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) ILTJ2317 71.5 B2319+60_D 64.3 J2236+2828 77.5 J2253+1608 77.5 J2320+1829 70.7 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