COVER INFORMATION Station: BADARY (Code Bd ) Experiment: Probing the radio jets in GRS1915+105 in a new puzzling accretion state Exp. Code: EM144B Schedule Version: 2.40 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 5 Mar 2021 Day 64 --- 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 04 00 00 J1800+3848 21 41 27 50.2 633.4 3.7 52.4 0 0 04 00 00 04 05 00 =1758+388 21 46 28 49.4 634.3 3.8 52.4 300 77 04 00 01 04 07 00 J1905+0952 21 48 28 36.8 593.0 2.7 30.1 53 77 04 07 00 04 09 30 =1903+097 21 50 59 36.5 593.6 2.7 30.4 150 115 04 07 01 04 09 30 GRS1915 21 50 59 38.6 591.7 2.6 29.7 -18 115 No stop 04 13 00 --- 21 54 29 38.2 592.7 2.6 30.1 192 169 04 09 31 04 13 00 J1905+0952 21 54 29 36.0 594.5 2.8 30.8 -18 169 No stop 04 15 30 =1903+097 21 57 00 35.7 595.2 2.8 31.1 132 208 04 13 01 04 15 30 GRS1915 21 57 00 37.8 593.4 2.7 30.4 -18 208 No stop 04 19 00 --- 22 00 30 37.4 594.3 2.7 30.8 192 262 04 15 31 04 19 40 J1905+0952 22 01 10 35.2 596.3 2.9 31.5 22 262 04 19 40 04 21 30 =1903+097 22 03 01 35.0 596.7 2.9 31.7 110 290 04 19 41 04 21 30 GRS1915 22 03 01 37.1 595.0 2.8 31.1 -18 290 No stop 04 25 00 --- 22 06 31 36.6 595.9 2.8 31.5 192 344 04 21 31 04 25 00 J1905+0952 22 06 31 34.5 597.6 3.0 32.0 -18 344 No stop 04 27 30 =1903+097 22 09 02 34.2 598.3 3.0 32.3 132 382 04 25 01 04 27 30 GRS1915 22 09 02 36.3 596.5 2.9 31.7 -18 382 No stop 04 31 00 --- 22 12 32 35.9 597.5 2.9 32.1 192 436 04 27 31 04 31 40 J1905+0952 22 13 12 33.6 599.3 3.1 32.7 22 436 04 31 40 04 33 30 =1903+097 22 15 03 33.4 599.8 3.1 32.9 110 464 04 31 41 04 33 30 GRS1915 22 15 03 35.5 598.1 3.0 32.4 -18 464 No stop 04 37 00 --- 22 18 33 35.1 599.0 3.0 32.7 192 518 04 33 31 04 37 00 J1905+0952 22 18 33 32.9 600.6 3.2 33.2 -18 518 No stop 04 39 30 =1903+097 22 21 04 32.6 601.3 3.2 33.4 132 556 04 37 01 04 39 30 GRS1915 22 21 04 34.7 599.6 3.1 32.9 -18 556 No stop 04 43 00 --- 22 24 34 34.3 600.5 3.1 33.3 192 610 04 39 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 5 Mar 2021 Day 64 --- 04 43 40 J1905+0952 22 25 14 32.0 602.3 3.3 33.8 22 610 04 43 40 04 45 30 =1903+097 22 27 05 31.7 602.7 3.3 33.9 110 638 04 43 41 04 45 30 GRS1915 22 27 05 33.9 601.1 3.2 33.5 -18 638 No stop 04 49 00 --- 22 30 35 33.5 602.0 3.2 33.8 192 692 04 45 31 04 49 00 J1905+0952 22 30 35 31.3 603.6 3.4 34.2 -18 692 No stop 04 51 30 =1903+097 22 33 06 30.9 604.1 3.4 34.4 132 731 04 49 01 04 51 30 GRS1915 22 33 06 33.1 602.6 3.3 34.0 -18 731 No stop 04 55 00 --- 22 36 36 32.6 603.4 3.3 34.3 192 785 04 51 31 04 55 40 J1905+0952 22 37 16 30.3 605.1 3.5 34.7 22 785 04 55 40 04 57 30 =1903+097 22 39 07 30.1 605.6 3.5 34.9 110 813 04 55 41 04 57 30 J1913+0932 22 39 07 30.9 603.5 3.4 34.2 -18 813 No stop 05 00 00 --- 22 41 37 30.5 604.1 3.5 34.4 132 851 04 57 31 05 00 40 J1905+0952 22 42 17 29.6 606.3 3.6 35.1 22 851 05 00 40 05 02 40 =1903+097 22 44 17 29.3 606.8 3.6 35.3 120 882 05 00 41 05 02 40 GRS1915 22 44 17 31.6 605.3 3.5 34.9 -18 882 No stop 05 06 10 --- 22 47 48 31.1 606.1 3.5 35.2 192 936 05 02 41 05 06 10 J1905+0952 22 47 48 28.8 607.6 3.7 35.5 -18 936 No stop 05 08 40 =1903+097 22 50 18 28.5 608.1 3.7 35.7 132 974 05 06 11 05 08 40 GRS1915 22 50 18 30.7 606.7 3.6 35.4 -18 974 No stop 05 12 10 --- 22 53 49 30.2 607.5 3.6 35.6 192 1028 05 08 41 05 12 50 J1905+0952 22 54 29 27.9 609.1 3.8 35.9 22 1028 05 12 50 05 14 40 =1903+097 22 56 19 27.6 609.5 3.8 36.0 110 1056 05 12 51 05 14 40 GRS1915 22 56 19 29.8 608.1 3.7 35.8 -18 1056 No stop 05 18 10 --- 22 59 50 29.3 608.9 3.7 36.0 192 1110 05 14 41 05 18 10 J1905+0952 22 59 50 27.1 610.3 3.9 36.3 -19 1110 No stop 05 20 40 =1903+097 23 02 20 26.7 610.8 3.9 36.4 131 1149 05 18 11 05 20 40 GRS1915 23 02 20 29.0 609.4 3.8 36.2 -18 1149 No stop 05 24 10 --- 23 05 51 28.5 610.2 3.8 36.4 192 1203 05 20 41 05 24 50 J1905+0952 23 06 31 26.1 611.8 4.0 36.6 21 1203 05 24 50 05 26 40 =1903+097 23 08 21 25.8 612.2 4.0 36.7 110 1231 05 24 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 5 Mar 2021 Day 64 --- 05 26 40 GRS1915 23 08 21 28.1 610.8 3.9 36.5 -18 1231 No stop 05 30 10 --- 23 11 52 27.6 611.6 3.9 36.7 192 1285 05 26 41 05 30 10 J1905+0952 23 11 52 25.3 612.9 4.1 36.9 -19 1285 No stop 05 32 40 =1903+097 23 14 22 25.0 613.5 4.1 37.0 131 1323 05 30 11 05 32 40 GRS1915 23 14 22 27.2 612.1 4.0 36.9 -18 1323 No stop 05 36 10 --- 23 17 53 26.7 612.9 4.0 37.0 192 1377 05 32 41 05 36 50 J1905+0952 23 18 33 24.3 614.4 4.2 37.2 21 1377 05 36 50 05 38 40 =1903+097 23 20 23 24.1 614.8 4.2 37.3 110 1405 05 36 51 05 38 40 GRS1915 23 20 23 26.3 613.4 4.1 37.2 -18 1405 No stop 05 42 10 --- 23 23 54 25.8 614.2 4.1 37.3 192 1459 05 38 41 05 42 10 J1905+0952 23 23 54 23.5 615.5 4.3 37.5 -19 1459 No stop 05 44 40 =1903+097 23 26 24 23.2 616.1 4.3 37.6 131 1497 05 42 11 05 44 40 GRS1915 23 26 24 25.4 614.8 4.2 37.5 -18 1497 No stop 05 48 10 --- 23 29 55 24.9 615.5 4.2 37.6 192 1551 05 44 41 05 48 50 J1905+0952 23 30 35 22.5 617.0 4.4 37.7 21 1551 05 48 50 05 50 40 =1903+097 23 32 25 22.3 617.3 4.4 37.8 110 1579 05 48 51 05 50 40 J1913+0932 23 32 25 23.2 615.5 4.3 37.4 -17 1579 No stop 05 53 10 --- 23 34 56 22.8 616.0 4.3 37.5 133 1618 05 50 41 05 53 50 J1905+0952 23 35 36 21.8 618.0 4.5 37.9 23 1618 05 53 50 05 55 50 =1903+097 23 37 36 21.5 618.4 4.5 38.0 120 1649 05 53 51 05 55 50 GRS1915 23 37 36 23.8 617.1 4.4 37.9 -18 1649 No stop 05 59 20 --- 23 41 07 23.2 617.9 4.4 38.0 192 1703 05 55 51 05 59 20 J1905+0952 23 41 07 20.9 619.2 4.6 38.1 -19 1703 No stop 06 01 50 =1903+097 23 43 37 20.6 619.7 4.6 38.2 131 1741 05 59 21 06 01 50 GRS1915 23 43 37 22.8 618.4 4.5 38.1 -18 1741 No stop 06 05 20 --- 23 47 08 22.3 619.1 4.5 38.2 192 1795 06 01 51 06 06 00 J1905+0952 23 47 48 19.9 620.5 4.7 38.3 21 1795 06 06 00 06 07 50 =1903+097 23 49 38 19.6 620.9 4.7 38.3 110 1823 06 06 01 06 07 50 GRS1915 23 49 38 21.9 619.7 4.6 38.3 -18 1823 No stop 06 11 20 --- 23 53 09 21.4 620.4 4.6 38.4 192 1877 06 07 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 5 Mar 2021 Day 64 --- 06 11 20 J1905+0952 23 53 09 19.1 621.6 4.8 38.4 -19 1877 No stop 06 13 50 =1903+097 23 55 39 18.7 622.1 4.8 38.5 131 1915 06 11 21 06 13 50 GRS1915 23 55 39 21.0 620.9 4.7 38.5 -18 1915 No stop 06 17 20 --- 23 59 10 20.5 621.6 4.7 38.6 192 1969 06 13 51 06 18 00 J1905+0952 23 59 50 18.1 623.0 4.9 38.6 21 1969 06 18 00 06 19 50 =1903+097 00 01 40 17.8 623.4 4.9 38.6 110 1997 06 18 01 06 19 50 GRS1915 00 01 40 20.1 622.1 4.8 38.6 -18 1997 No stop 06 23 20 --- 00 05 11 19.6 622.9 4.8 38.7 192 2051 06 19 51 06 23 20 J1905+0952 00 05 11 17.3 624.1 5.0 38.7 -19 2051 No stop 06 25 50 =1903+097 00 07 41 16.9 624.6 5.0 38.7 131 2090 06 23 21 06 25 50 GRS1915 00 07 41 19.2 623.4 4.9 38.8 -18 2090 No stop 06 29 20 --- 00 11 12 18.6 624.1 4.9 38.8 192 2144 06 25 51 06 30 00 J1905+0952 00 11 52 16.2 625.4 5.1 38.8 21 2144 06 30 00 06 31 50 =1903+097 00 13 42 15.9 625.8 5.1 38.8 110 2172 06 30 01 06 31 50 GRS1915 00 13 42 18.2 624.6 5.0 38.9 -18 2172 No stop 06 35 20 --- 00 17 13 17.7 625.3 5.0 38.9 192 2226 06 31 51 06 35 20 J1905+0952 00 17 13 15.4 626.5 5.2 38.8 -19 2226 No stop 06 37 50 =1903+097 00 19 43 15.0 627.0 5.2 38.9 131 2264 06 35 21 06 37 50 GRS1915 00 19 43 17.3 625.8 5.1 39.0 -18 2264 No stop 06 41 20 --- 00 23 14 16.8 626.5 5.1 39.0 192 2318 06 37 51 06 42 00 J1905+0952 00 23 54 14.4 627.8 5.3 38.9 21 2318 06 42 00 06 43 50 =1903+097 00 25 44 14.1 628.2 5.3 38.9 110 2346 06 42 01 06 43 50 J1913+0932 00 25 44 15.0 626.4 5.2 38.8 -17 2346 No stop 06 46 20 --- 00 28 14 14.6 626.9 5.2 38.8 133 2385 06 43 51 06 47 00 J1905+0952 00 28 54 13.6 628.8 5.4 38.9 23 2385 06 47 00 06 49 00 =1903+097 00 30 55 13.3 629.2 5.4 38.9 120 2415 06 47 01 06 49 00 GRS1915 00 30 55 15.6 628.0 5.2 39.0 -18 2415 No stop 06 52 30 --- 00 34 25 15.0 628.7 5.3 39.1 192 2469 06 49 01 06 52 30 J1905+0952 00 34 25 12.7 629.9 5.5 38.9 -19 2469 No stop 06 55 00 =1903+097 00 36 56 12.3 630.4 5.5 38.9 131 2508 06 52 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 5 Mar 2021 Day 64 --- 06 55 00 GRS1915 00 36 56 14.7 629.2 5.3 39.1 -18 2508 No stop 06 58 30 --- 00 40 26 14.1 629.9 5.4 39.1 192 2562 06 55 01 06 59 10 J1905+0952 00 41 06 11.7 631.2 5.6 38.9 21 2562 06 59 10 07 01 00 =1903+097 00 42 57 11.4 631.5 5.6 38.9 110 2590 06 59 11 07 01 00 GRS1915 00 42 57 13.7 630.4 5.4 39.1 -18 2590 No stop 07 04 30 --- 00 46 27 13.2 631.1 5.5 39.1 192 2644 07 01 01 07 04 30 J1905+0952 00 46 27 10.9 632.2 5.7 38.9 -19 2644 No stop 07 07 00 =1903+097 00 48 58 10.5 632.7 5.7 38.9 131 2682 07 04 31 07 07 00 GRS1915 00 48 58 12.8 631.6 5.5 39.1 -18 2682 No stop 07 10 30 --- 00 52 28 12.3 632.2 5.6 39.0 192 2736 07 07 01 07 13 00 GRS1915 00 54 59 11.9 632.7 5.6 39.0 144 2736 07 13 00 07 16 30 --- 00 58 29 11.3 633.4 5.7 39.0 210 2790 07 13 01 07 19 00 GRS1915 01 01 00 10.9 633.9 5.7 39.0 144 2790 07 19 00 07 22 30 --- 01 04 30 10.4 634.6 5.8 38.9 210 2844 07 19 01 07 25 00 GRS1915 01 07 01 10.0 635.1 5.8 38.9 144 2844 07 25 00 07 28 30 --- 01 10 31 9.5 635.8 5.9 D 38.8 0 2897 07 25 01 07 40 00 J1800+3848 01 22 03 19.0 669.4 7.3 37.9 633 2897 07 40 00 07 45 00 =1758+388 01 27 04 18.4 670.2 7.4 37.4 300 2974 07 40 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess121.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 09.784147 0.00 GRS1915+105 10 51 26.57111 * 10 56 44.62477 10 58 46.80895 0.00 From catalog imbedded in main SCHED input file. * J1913+0932 19 11 00.869981 * 19 13 24.025348 19 14 22.931578 0.00 09 27 34.81592 * 09 32 45.37648 09 34 44.78753 0.00 From catalog imbedded in main SCHED input file. 1758+388 17 58 44.703954 * 18 00 24.765363 18 01 05.985930 0.01 * J1800+3848 38 48 32.47350 * 38 48 30.69748 38 48 11.69985 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 38.639105 0.13 * J1905+0952 09 47 30.15815 * 09 52 08.40750 09 53 54.19200 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 58.214842 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 26.32748 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 sess121.C2048 1 2 3 4 5 6 7 8 9 10 11 14 3.967 484.265 J1913+0932 sess121.C2048 1 2 3 4 5 6 7 8 9 10 11 14 0.375 42.444 J1800+3848 sess121.C2048 1 2 3 4 5 6 7 8 9 10 11 14 0.167 21.481 J1905+0952 sess121.C2048 1 2 3 4 5 6 7 8 9 10 11 14 2.850 348.727 J2253+1608 sess121.C2048 1 2 3 4 5 7 8 9 10 11 14 0.100 9.360 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 59.3 J1913+0932 59.4 J1800+3848 82.9 J1905+0952 61.3 J2253+1608 22.3 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