COVER INFORMATION Station: BADARY (Code Bd ) Experiment: Probing the radio jets in GRS1915+105 in a new puzzling accretion state Exp. Code: EM144A Schedule Version: 2.50 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: S.E.Motta Address: INAF - Osservatorio Astronomico di Brera Via E. Bianchi 46, I-23807 Merate Italy Phone: +39 3339445713 EMAIL: sara.motta@inaf.it Fax: Phone during observation: +39 3339445713 Observing mode: EVN, 6 GHz continuum Notes: Target (phase ref): GRS 1915+105 (J1905+0952) Fringe finders: J1800+3848, J2253+1608 Check source: J1913+0932 Schedule for BADARY (Code Bd ) Page 2 Probing the radio jets in GRS1915+105 in a new puzzling accretion state 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 ---------------------------------------------------------------------------------------- --- Fri 30 Oct 2020 Day 304 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 330.49 330.49 330.49 330.49 394.49 394.49 394.49 394.49 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 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 12 30 00 J1800+3848 21 56 05 47.9 636.0 3.9 52.2 0 0 12 30 00 12 35 00 =1758+388 22 01 06 47.2 636.9 4.0 52.0 300 77 12 30 01 12 37 00 J1905+0952 22 03 06 34.9 596.8 2.9 31.7 55 77 12 37 00 12 39 30 =1903+097 22 05 36 34.6 597.4 3.0 32.0 150 115 12 37 01 12 39 30 GRS1915 22 05 36 36.8 595.7 2.8 31.4 -18 115 No stop 12 43 00 --- 22 09 07 36.3 596.6 2.9 31.7 192 169 12 39 31 12 43 00 J1905+0952 22 09 07 34.2 598.3 3.0 32.3 -18 169 No stop 12 45 30 =1903+097 22 11 37 33.8 598.9 3.1 32.6 132 208 12 43 01 12 45 30 GRS1915 22 11 37 36.0 597.2 2.9 32.0 -18 208 No stop 12 49 00 --- 22 15 08 35.5 598.1 3.0 32.4 192 262 12 45 31 12 49 40 J1905+0952 22 15 48 33.3 600.0 3.2 32.9 22 262 12 49 40 12 51 30 =1903+097 22 17 38 33.0 600.4 3.2 33.1 110 290 12 49 41 12 51 30 GRS1915 22 17 38 35.2 598.8 3.0 32.6 -18 290 No stop 12 55 00 --- 22 21 09 34.7 599.6 3.1 33.0 192 344 12 51 31 12 55 00 J1905+0952 22 21 09 32.5 601.3 3.2 33.4 -18 344 No stop 12 57 30 =1903+097 22 23 39 32.2 601.9 3.3 33.6 132 382 12 55 01 12 57 30 GRS1915 22 23 39 34.4 600.3 3.1 33.2 -18 382 No stop 13 01 00 --- 22 27 10 33.9 601.1 3.2 33.5 192 436 12 57 31 13 01 40 J1905+0952 22 27 50 31.6 602.9 3.4 34.0 22 436 13 01 40 13 03 30 =1903+097 22 29 40 31.4 603.3 3.4 34.2 110 464 13 01 41 13 03 30 GRS1915 22 29 40 33.6 601.8 3.2 33.7 -18 464 No stop 13 07 00 --- 22 33 11 33.1 602.6 3.3 34.0 192 518 13 03 31 13 07 00 J1905+0952 22 33 11 30.9 604.2 3.4 34.4 -18 518 No stop 13 09 30 =1903+097 22 35 41 30.5 604.8 3.5 34.6 132 556 13 07 01 13 09 30 GRS1915 22 35 41 32.8 603.2 3.3 34.2 -18 556 No stop 13 13 00 --- 22 39 12 32.3 604.1 3.4 34.5 192 610 13 09 31 Schedule for BADARY (Code Bd ) Page 3 Probing the radio jets in GRS1915+105 in a new puzzling accretion state 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 ---------------------------------------------------------------------------------------- --- Fri 30 Oct 2020 Day 304 --- 13 13 40 J1905+0952 22 39 52 30.0 605.7 3.6 34.9 22 610 13 13 40 13 15 30 =1903+097 22 41 42 29.7 606.2 3.6 35.1 110 638 13 13 41 13 15 30 GRS1915 22 41 42 31.9 604.7 3.4 34.7 -18 638 No stop 13 19 00 --- 22 45 13 31.4 605.5 3.5 35.0 192 692 13 15 31 13 19 00 J1905+0952 22 45 13 29.2 607.0 3.6 35.3 -18 692 No stop 13 21 30 =1903+097 22 47 43 28.8 607.6 3.7 35.5 132 731 13 19 01 13 21 30 GRS1915 22 47 43 31.1 606.1 3.5 35.2 -18 731 No stop 13 25 00 --- 22 51 14 30.6 606.9 3.6 35.4 192 785 13 21 31 13 25 40 J1905+0952 22 51 54 28.2 608.5 3.8 35.8 22 785 13 25 40 13 27 30 =1903+097 22 53 44 28.0 608.9 3.8 35.9 110 813 13 25 41 13 27 30 J1913+0932 22 53 44 28.8 607.0 3.7 35.3 -17 813 No stop 13 30 00 --- 22 56 15 28.5 607.5 3.7 35.4 133 851 13 27 31 13 30 40 J1905+0952 22 56 55 27.5 609.6 3.8 36.1 22 851 13 30 40 13 32 40 =1903+097 22 58 55 27.2 610.1 3.9 36.2 120 882 13 30 41 13 32 40 GRS1915 22 58 55 29.5 608.7 3.7 36.0 -18 882 No stop 13 36 10 --- 23 02 26 29.0 609.5 3.8 36.2 192 936 13 32 41 13 36 10 J1905+0952 23 02 26 26.7 610.9 3.9 36.4 -19 936 No stop 13 38 40 =1903+097 23 04 56 26.3 611.4 4.0 36.5 131 974 13 36 11 13 38 40 GRS1915 23 04 56 28.6 610.0 3.8 36.3 -18 974 No stop 13 42 10 --- 23 08 27 28.1 610.8 3.9 36.5 192 1028 13 38 41 13 42 50 J1905+0952 23 09 07 25.7 612.3 4.0 36.8 21 1028 13 42 50 13 44 40 =1903+097 23 10 57 25.5 612.7 4.1 36.9 110 1056 13 42 51 13 44 40 GRS1915 23 10 57 27.7 611.4 3.9 36.7 -18 1056 No stop 13 48 10 --- 23 14 28 27.2 612.2 4.0 36.9 192 1110 13 44 41 13 48 10 J1905+0952 23 14 28 24.9 613.5 4.1 37.0 -19 1110 No stop 13 50 40 =1903+097 23 16 58 24.6 614.1 4.2 37.2 131 1149 13 48 11 13 50 40 GRS1915 23 16 58 26.8 612.7 4.0 37.0 -18 1149 No stop 13 54 10 --- 23 20 29 26.3 613.5 4.1 37.2 192 1203 13 50 41 13 54 50 J1905+0952 23 21 09 23.9 615.0 4.2 37.3 21 1203 13 54 50 13 56 40 =1903+097 23 22 59 23.7 615.3 4.3 37.4 110 1231 13 54 51 Schedule for BADARY (Code Bd ) Page 4 Probing the radio jets in GRS1915+105 in a new puzzling accretion state 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 ---------------------------------------------------------------------------------------- --- Fri 30 Oct 2020 Day 304 --- 13 56 40 GRS1915 23 22 59 26.0 614.0 4.1 37.3 -18 1231 No stop 14 00 10 --- 23 26 30 25.4 614.8 4.2 37.5 192 1285 13 56 41 14 00 10 J1905+0952 23 26 30 23.1 616.1 4.3 37.6 -19 1285 No stop 14 02 40 =1903+097 23 29 00 22.8 616.6 4.4 37.7 131 1323 14 00 11 14 02 40 GRS1915 23 29 00 25.1 615.3 4.2 37.6 -18 1323 No stop 14 06 10 --- 23 32 31 24.5 616.1 4.3 37.7 192 1377 14 02 41 14 06 50 J1905+0952 23 33 11 22.1 617.5 4.4 37.8 21 1377 14 06 50 14 08 40 =1903+097 23 35 01 21.9 617.9 4.5 37.9 110 1405 14 06 51 14 08 40 GRS1915 23 35 01 24.2 616.6 4.3 37.8 -18 1405 No stop 14 12 10 --- 23 38 32 23.6 617.3 4.4 38.0 192 1459 14 08 41 14 12 10 J1905+0952 23 38 32 21.3 618.6 4.5 38.0 -19 1459 No stop 14 14 40 =1903+097 23 41 02 20.9 619.1 4.6 38.1 131 1497 14 12 11 14 14 40 GRS1915 23 41 02 23.2 617.9 4.4 38.0 -18 1497 No stop 14 18 10 --- 23 44 33 22.7 618.6 4.5 38.2 192 1551 14 14 41 14 18 50 J1905+0952 23 45 13 20.3 620.0 4.6 38.2 21 1551 14 18 50 14 20 40 =1903+097 23 47 03 20.0 620.4 4.7 38.3 110 1579 14 18 51 14 20 40 J1913+0932 23 47 03 21.0 618.6 4.5 38.0 -17 1579 No stop 14 23 10 --- 23 49 33 20.6 619.1 4.6 38.0 133 1618 14 20 41 14 23 50 J1905+0952 23 50 14 19.5 621.0 4.7 38.4 23 1618 14 23 50 14 25 50 =1903+097 23 52 14 19.2 621.4 4.8 38.4 120 1649 14 23 51 14 25 50 GRS1915 23 52 14 21.5 620.2 4.6 38.4 -18 1649 No stop 14 29 20 --- 23 55 44 21.0 620.9 4.7 38.5 192 1703 14 25 51 14 29 20 J1905+0952 23 55 44 18.7 622.2 4.8 38.5 -19 1703 No stop 14 31 50 =1903+097 23 58 15 18.3 622.7 4.9 38.5 131 1741 14 29 21 14 31 50 GRS1915 23 58 15 20.6 621.4 4.7 38.6 -18 1741 No stop 14 35 20 --- 00 01 45 20.1 622.2 4.8 38.6 192 1795 14 31 51 14 36 00 J1905+0952 00 02 26 17.7 623.5 4.9 38.6 21 1795 14 36 00 14 37 50 =1903+097 00 04 16 17.4 623.9 5.0 38.7 110 1823 14 36 01 14 37 50 GRS1915 00 04 16 19.7 622.7 4.8 38.7 -18 1823 No stop 14 41 20 --- 00 07 46 19.2 623.4 4.9 38.8 192 1877 14 37 51 Schedule for BADARY (Code Bd ) Page 5 Probing the radio jets in GRS1915+105 in a new puzzling accretion state 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 ---------------------------------------------------------------------------------------- --- Fri 30 Oct 2020 Day 304 --- 14 41 20 J1905+0952 00 07 46 16.9 624.6 5.0 38.7 -19 1877 No stop 14 43 50 =1903+097 00 10 17 16.5 625.1 5.1 38.7 131 1915 14 41 21 14 43 50 GRS1915 00 10 17 18.8 623.9 4.9 38.8 -18 1915 No stop 14 47 20 --- 00 13 47 18.2 624.6 5.0 38.9 192 1969 14 43 51 14 48 00 J1905+0952 00 14 28 15.8 625.9 5.1 38.8 21 1969 14 48 00 14 49 50 =1903+097 00 16 18 15.5 626.3 5.2 38.8 110 1997 14 48 01 14 49 50 GRS1915 00 16 18 17.9 625.1 5.0 38.9 -18 1997 No stop 14 53 20 --- 00 19 48 17.3 625.8 5.1 39.0 192 2051 14 49 51 14 53 20 J1905+0952 00 19 48 15.0 627.0 5.2 38.9 -19 2051 No stop 14 55 50 =1903+097 00 22 19 14.6 627.5 5.3 38.9 131 2090 14 53 21 14 55 50 GRS1915 00 22 19 16.9 626.3 5.1 39.0 -18 2090 No stop 14 59 20 --- 00 25 49 16.4 627.0 5.2 39.0 192 2144 14 55 51 15 00 00 J1905+0952 00 26 30 14.0 628.3 5.3 38.9 21 2144 15 00 00 15 01 50 =1903+097 00 28 20 13.7 628.7 5.4 38.9 110 2172 15 00 01 15 01 50 GRS1915 00 28 20 16.0 627.5 5.2 39.0 -18 2172 No stop 15 05 20 --- 00 31 50 15.5 628.2 5.3 39.1 192 2226 15 01 51 15 05 20 J1905+0952 00 31 50 13.1 629.4 5.4 38.9 -19 2226 No stop 15 07 50 =1903+097 00 34 21 12.7 629.9 5.5 38.9 131 2264 15 05 21 15 07 50 GRS1915 00 34 21 15.1 628.7 5.3 39.1 -18 2264 No stop 15 11 20 --- 00 37 51 14.5 629.4 5.4 39.1 192 2318 15 07 51 15 12 00 J1905+0952 00 38 31 12.1 630.7 5.5 38.9 21 2318 15 12 00 15 13 50 =1903+097 00 40 22 11.8 631.1 5.6 38.9 110 2346 15 12 01 15 13 50 J1913+0932 00 40 22 12.8 629.3 5.4 38.9 -17 2346 No stop 15 16 20 --- 00 42 52 12.4 629.8 5.5 38.9 133 2385 15 13 51 15 17 00 J1905+0952 00 43 32 11.3 631.7 5.6 38.9 23 2385 15 17 00 15 19 00 =1903+097 00 45 33 11.0 632.1 5.6 38.9 120 2415 15 17 01 15 19 00 GRS1915 00 45 33 13.3 630.9 5.5 39.1 -18 2415 No stop 15 22 30 --- 00 49 03 12.8 631.6 5.5 39.1 192 2469 15 19 01 15 22 30 J1905+0952 00 49 03 10.5 632.7 5.7 38.9 -19 2469 No stop 15 25 00 =1903+097 00 51 34 10.1 633.2 5.7 38.8 131 2508 15 22 31 Schedule for BADARY (Code Bd ) Page 6 Probing the radio jets in GRS1915+105 in a new puzzling accretion state 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 ---------------------------------------------------------------------------------------- --- Fri 30 Oct 2020 Day 304 --- 15 25 00 GRS1915 00 51 34 12.4 632.1 5.6 39.0 -18 2508 No stop 15 28 30 --- 00 55 04 11.9 632.8 5.6 39.0 192 2562 15 25 01 15 31 00 GRS1915 00 57 35 11.5 633.2 5.7 39.0 144 2562 15 31 00 15 34 30 --- 01 01 05 10.9 633.9 5.7 39.0 210 2615 15 31 01 15 37 00 GRS1915 01 03 36 10.5 634.4 5.8 38.9 144 2615 15 37 00 15 40 30 --- 01 07 06 10.0 635.1 5.8 38.9 210 2669 15 37 01 16 10 00 J1800+3848 01 36 41 17.3 671.8 7.6 36.3 1713 2669 16 10 00 16 15 00 =1758+388 01 41 42 16.7 672.6 7.7 35.8 300 2746 16 10 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess320.C2048 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 3 Station: BADARY Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 4500.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U 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= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 330.49 330.49 330.49 330.49 394.49 394.49 394.49 394.49 458.49 458.49 458.49 458.49 522.49 522.49 522.49 522.49 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: 11 12 19 Track assignments are: track1= 18, 26, 2, 10, 20, 28, 4, 12, 22, 30, 6, 14, 24, 32, 8, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * GRS1915 19 12 49.958613 * 19 15 11.544821 19 16 08.946282 0.00 GRS1915+105 10 51 26.57111 * 10 56 44.62477 10 59 05.89093 0.00 From catalog imbedded in main SCHED input file. * J1913+0932 19 11 00.869981 * 19 13 24.025348 19 14 22.061653 0.00 09 27 34.81592 * 09 32 45.37648 09 35 03.19161 0.00 From catalog imbedded in main SCHED input file. 1758+388 17 58 44.703954 * 18 00 24.765363 18 01 04.600553 0.01 * J1800+3848 38 48 32.47350 * 38 48 30.69748 38 48 44.84096 0.01 J1800+38 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 5095 observations. 1903+097 19 03 17.231910 * 19 05 39.898972 19 06 37.696026 0.13 * J1905+0952 09 47 30.15815 * 09 52 08.40750 09 54 13.05426 0.22 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 104 observations. 3C454.3 22 51 29.519739 * 22 53 57.747939 22 54 59.130379 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 37.30815 0.73 2251+158 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J2253+16 GSFC 2016a X/S astro solution, 41272 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 GRS1915 sess320.C2048 1 2 3 4 5 6 7 8 9 10 11 14 3.967 475.462 J1913+0932 sess320.C2048 1 2 3 4 5 6 7 8 9 10 11 14 0.375 40.584 J1800+3848 sess320.C2048 1 2 3 4 5 6 7 8 9 10 11 14 0.167 21.144 J1905+0952 sess320.C2048 1 2 3 4 5 6 7 8 9 10 11 14 2.850 343.015 J2253+1608 sess320.C2048 1 2 3 4 5 7 8 9 10 11 14 0.100 9.530 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) GRS1915 77.2 J1913+0932 76.4 J1800+3848 73.6 J1905+0952 74.7 J2253+1608 130.3 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