COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: Probing the radio jets in GRS1915+105 in a new puzzling accretion state Exp. Code: EM144C Schedule Version: 3.40 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 JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Wed 16 Jun 2021 Day 167 --- 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: 833.51 833.51 833.51 833.51 769.51 769.51 769.51 769.51 705.51 705.51 705.51 705.51 641.51 641.51 641.51 641.51 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 21 30 00 J1800+3848 15 02 15 56.5 97.1 -3.0 -49.7 0 0 21 30 00 21 35 00 =1758+388 15 07 15 57.2 98.3 -2.9 -49.5 300 77 21 30 01 21 37 00 J1905+0952 15 09 16 26.0 109.5 -4.0 -35.0 -124 77 21 37 00 21 39 30 =1903+097 15 11 46 26.3 110.0 -3.9 -34.8 26 116 21 37 01 21 39 30 GRS1915 15 11 46 25.9 107.2 -4.1 -35.6 -27 116 No stop 21 43 00 --- 15 15 17 26.4 108.0 -4.0 -35.4 183 170 21 39 31 21 43 40 J1905+0952 15 15 57 26.9 111.0 -3.8 -34.6 13 170 21 43 40 21 45 30 =1903+097 15 17 47 27.2 111.4 -3.8 -34.5 110 198 21 43 41 21 45 30 GRS1915 15 17 47 26.7 108.5 -4.0 -35.3 -27 198 No stop 21 49 00 --- 15 21 18 27.2 109.3 -3.9 -35.1 183 252 21 45 31 21 51 30 GRS1915 15 23 48 27.6 109.9 -3.9 -35.0 142 252 21 51 30 21 55 00 --- 15 27 19 28.1 110.7 -3.8 -34.8 210 307 21 51 31 21 55 40 J1905+0952 15 27 59 28.6 113.7 -3.6 -33.8 12 307 21 55 40 21 57 30 =1903+097 15 29 49 28.8 114.2 -3.6 -33.7 110 335 21 55 41 21 57 30 GRS1915 15 29 49 28.4 111.3 -3.8 -34.6 -27 335 No stop 22 01 00 --- 15 33 20 28.9 112.1 -3.7 -34.4 183 389 21 57 31 22 03 30 GRS1915 15 35 50 29.3 112.7 -3.7 -34.2 142 389 22 03 30 22 07 00 --- 15 39 21 29.7 113.5 -3.6 -34.0 210 443 22 03 31 22 07 40 J1905+0952 15 40 01 30.2 116.6 -3.4 -32.9 12 443 22 07 40 22 09 30 =1903+097 15 41 51 30.5 117.0 -3.4 -32.8 110 471 22 07 41 22 09 30 GRS1915 15 41 51 30.1 114.1 -3.6 -33.8 -27 471 No stop 22 13 00 --- 15 45 22 30.6 114.9 -3.5 -33.6 183 526 22 09 31 22 15 30 GRS1915 15 47 52 30.9 115.5 -3.5 -33.4 142 526 22 15 30 22 19 00 --- 15 51 23 31.4 116.3 -3.4 -33.1 210 580 22 15 31 22 19 40 J1905+0952 15 52 03 31.8 119.5 -3.2 -31.9 12 580 22 19 40 22 21 30 =1903+097 15 53 53 32.1 119.9 -3.2 -31.8 110 608 22 19 41 Schedule for JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Wed 16 Jun 2021 Day 167 --- 22 21 30 GRS1915 15 53 53 31.7 116.9 -3.4 -32.9 -27 608 No stop 22 25 00 --- 15 57 24 32.2 117.8 -3.3 -32.6 183 662 22 21 31 22 27 30 GRS1915 15 59 54 32.5 118.4 -3.3 -32.4 142 662 22 27 30 22 31 00 --- 16 03 25 33.0 119.3 -3.2 -32.1 210 716 22 27 31 22 31 40 J1905+0952 16 04 05 33.4 122.5 -3.0 -30.8 12 716 22 31 40 22 33 30 =1903+097 16 05 55 33.6 123.0 -3.0 -30.6 110 745 22 31 41 22 33 30 J1913+0932 16 05 55 32.3 121.2 -3.1 -31.3 -22 745 No stop 22 37 00 --- 16 09 26 32.8 122.1 -3.1 -30.9 188 799 22 33 31 22 38 00 J1905+0952 16 10 26 34.2 124.1 -2.9 -30.2 37 799 22 38 00 22 40 30 =1903+097 16 12 56 34.5 124.8 -2.9 -29.9 150 837 22 38 01 22 40 30 GRS1915 16 12 56 34.2 121.7 -3.1 -31.3 -28 837 No stop 22 44 00 --- 16 16 27 34.6 122.6 -3.0 -30.9 182 891 22 40 31 22 44 00 J1905+0952 16 16 27 34.9 125.7 -2.8 -29.6 -28 891 No stop 22 46 30 =1903+097 16 18 57 35.2 126.3 -2.8 -29.3 122 930 22 44 01 22 46 30 GRS1915 16 18 57 35.0 123.2 -3.0 -30.7 -28 930 No stop 22 50 00 --- 16 22 28 35.4 124.1 -2.9 -30.3 182 984 22 46 31 22 52 30 GRS1915 16 24 58 35.7 124.8 -2.9 -30.1 141 984 22 52 30 22 56 00 --- 16 28 29 36.1 125.7 -2.8 -29.7 210 1038 22 52 31 22 56 00 J1905+0952 16 28 29 36.3 128.9 -2.6 -28.2 -29 1038 No stop 22 58 30 =1903+097 16 30 59 36.6 129.5 -2.6 -27.9 121 1077 22 56 01 22 58 30 GRS1915 16 30 59 36.4 126.3 -2.8 -29.4 -28 1077 No stop 23 02 00 --- 16 34 30 36.9 127.3 -2.7 -29.0 182 1131 22 58 31 23 04 30 GRS1915 16 37 00 37.2 128.0 -2.7 -28.7 141 1131 23 04 30 23 08 00 --- 16 40 31 37.6 128.9 -2.6 -28.3 210 1185 23 04 31 23 08 00 J1905+0952 16 40 31 37.7 132.2 -2.4 -26.8 -29 1185 No stop 23 10 30 =1903+097 16 43 01 38.0 132.9 -2.4 -26.4 121 1224 23 08 01 23 10 30 GRS1915 16 43 01 37.9 129.6 -2.6 -28.0 -28 1224 No stop 23 14 00 --- 16 46 32 38.3 130.6 -2.5 -27.6 182 1278 23 10 31 23 16 30 GRS1915 16 49 02 38.5 131.3 -2.5 -27.3 141 1278 23 16 30 23 20 00 --- 16 52 33 38.9 132.2 -2.4 -26.8 210 1332 23 16 31 Schedule for JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Wed 16 Jun 2021 Day 167 --- 23 20 00 J1905+0952 16 52 33 39.0 135.6 -2.2 -25.2 -29 1332 No stop 23 22 30 =1903+097 16 55 03 39.3 136.3 -2.2 -24.8 121 1371 23 20 01 23 22 30 GRS1915 16 55 03 39.2 132.9 -2.4 -26.5 -28 1371 No stop 23 26 00 --- 16 58 34 39.6 133.9 -2.3 -26.0 182 1425 23 22 31 23 28 30 GRS1915 17 01 04 39.9 134.7 -2.3 -25.7 141 1425 23 28 30 23 32 00 --- 17 04 35 40.2 135.7 -2.2 -25.2 210 1479 23 28 31 23 32 00 J1905+0952 17 04 35 40.2 139.1 -2.0 -23.5 -30 1479 No stop 23 34 30 =1903+097 17 07 05 40.5 139.8 -2.0 -23.1 120 1517 23 32 01 23 34 30 J1913+0932 17 07 05 39.4 137.7 -2.1 -24.1 -24 1517 No stop 23 38 00 --- 17 10 36 39.7 138.7 -2.1 -23.6 186 1572 23 34 31 23 39 00 J1905+0952 17 11 36 40.9 141.2 -1.9 -22.4 35 1572 23 39 00 23 41 30 =1903+097 17 14 06 41.1 141.9 -1.9 -22.0 150 1610 23 39 01 23 41 30 GRS1915 17 14 06 41.2 138.5 -2.0 -23.8 -29 1610 No stop 23 45 00 --- 17 17 37 41.5 139.5 -2.0 -23.3 181 1664 23 41 31 23 45 00 J1905+0952 17 17 37 41.4 143.0 -1.8 -21.5 -30 1664 No stop 23 47 30 =1903+097 17 20 07 41.7 143.7 -1.8 -21.1 120 1703 23 45 01 23 47 30 GRS1915 17 20 07 41.8 140.3 -1.9 -22.9 -29 1703 No stop 23 51 00 --- 17 23 38 42.1 141.4 -1.9 -22.4 181 1757 23 47 31 23 53 30 GRS1915 17 26 08 42.4 142.1 -1.8 -22.0 141 1757 23 53 30 23 57 00 --- 17 29 39 42.7 143.2 -1.8 -21.4 210 1811 23 53 31 23 57 00 J1905+0952 17 29 39 42.5 146.7 -1.6 -19.5 -30 1811 No stop 23 59 30 =1903+097 17 32 09 42.7 147.5 -1.6 -19.0 120 1850 23 57 01 --- Start: Wed 16 Jun 2021 Day 167 -- Stop: Thu 17 Jun 2021 Day 168 --- 23 59 30 GRS1915 17 32 09 42.9 144.0 -1.7 -21.0 -29 1850 No stop 00 03 00 --- 17 35 40 43.2 145.1 -1.7 -20.4 181 1904 23 59 31 00 05 30 GRS1915 17 38 10 43.4 145.9 -1.6 -20.0 141 1904 00 05 30 00 09 00 --- 17 41 41 43.7 147.0 -1.6 -19.4 210 1958 00 05 31 00 09 00 J1905+0952 17 41 41 43.4 150.6 -1.4 -17.4 -30 1958 No stop 00 11 30 =1903+097 17 44 11 43.6 151.4 -1.4 -16.9 120 1997 00 09 01 Schedule for JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 00 11 30 GRS1915 17 44 11 43.9 147.8 -1.5 -18.9 -29 1997 No stop 00 15 00 --- 17 47 42 44.2 149.0 -1.5 -18.3 181 2051 00 11 31 00 17 30 GRS1915 17 50 12 44.4 149.8 -1.4 -17.9 141 2051 00 17 30 00 21 00 --- 17 53 43 44.6 150.9 -1.4 -17.2 210 2105 00 17 31 00 21 00 J1905+0952 17 53 43 44.2 154.5 -1.2 -15.2 -30 2105 No stop 00 23 30 =1903+097 17 56 13 44.4 155.3 -1.2 -14.7 120 2144 00 21 01 00 23 30 GRS1915 17 56 13 44.8 151.8 -1.3 -16.8 -29 2144 No stop 00 27 00 --- 17 59 44 45.1 152.9 -1.3 -16.1 181 2198 00 23 31 00 29 30 GRS1915 18 02 14 45.2 153.8 -1.2 -15.6 141 2198 00 29 30 00 33 00 --- 18 05 45 45.4 154.9 -1.2 -15.0 210 2252 00 29 31 00 33 00 J1905+0952 18 05 45 45.0 158.5 -1.0 -12.8 -31 2252 No stop 00 35 30 =1903+097 18 08 15 45.1 159.4 -1.0 -12.3 119 2290 00 33 01 00 35 30 J1913+0932 18 08 15 44.4 156.9 -1.1 -13.8 -25 2290 No stop 00 39 00 --- 18 11 46 44.6 158.1 -1.0 -13.1 185 2345 00 35 31 00 40 00 J1905+0952 18 12 46 45.3 160.9 -0.9 -11.4 34 2345 00 40 00 00 42 30 =1903+097 18 15 16 45.4 161.8 -0.9 -10.9 150 2383 00 40 01 00 42 30 GRS1915 18 15 16 46.0 158.2 -1.0 -13.1 -29 2383 No stop 00 46 00 --- 18 18 47 46.2 159.4 -1.0 -12.4 181 2437 00 42 31 00 46 00 J1905+0952 18 18 47 45.6 163.0 -0.8 -10.2 -31 2437 No stop 00 48 30 =1903+097 18 21 17 45.7 163.9 -0.8 -9.7 119 2476 00 46 01 00 48 30 GRS1915 18 21 17 46.3 160.3 -0.9 -11.9 -29 2476 No stop 00 52 00 --- 18 24 48 46.5 161.5 -0.9 -11.2 181 2530 00 48 31 00 54 30 GRS1915 18 27 18 46.6 162.4 -0.8 -10.6 141 2530 00 54 30 00 58 00 --- 18 30 49 46.8 163.6 -0.8 -9.9 210 2584 00 54 31 00 58 00 J1905+0952 18 30 49 46.1 167.2 -0.6 -7.7 -31 2584 No stop 01 00 30 =1903+097 18 33 19 46.1 168.1 -0.6 -7.2 119 2623 00 58 01 01 00 30 GRS1915 18 33 19 46.9 164.5 -0.7 -9.4 -29 2623 No stop 01 04 00 --- 18 36 50 47.0 165.7 -0.7 -8.6 181 2677 01 00 31 01 06 30 GRS1915 18 39 20 47.1 166.6 -0.6 -8.1 141 2677 01 06 30 01 10 00 --- 18 42 51 47.2 167.9 -0.6 -7.3 210 2731 01 06 31 Schedule for JODRELL1 (Code Jb ) 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 01 10 00 J1905+0952 18 42 51 46.4 171.5 -0.4 -5.2 -30 2731 No stop 01 12 30 =1903+097 18 45 21 46.5 172.4 -0.4 -4.6 120 2770 01 10 01 01 12 30 GRS1915 18 45 21 47.3 168.8 -0.5 -6.8 -29 2770 No stop 01 16 00 --- 18 48 52 47.4 170.1 -0.5 -6.0 181 2824 01 12 31 01 18 30 GRS1915 18 51 22 47.5 171.0 -0.4 -5.5 141 2824 01 18 30 01 22 00 --- 18 54 53 47.5 172.2 -0.4 -4.7 210 2878 01 18 31 01 22 00 J1905+0952 18 54 53 46.6 175.8 -0.2 -2.6 -30 2878 No stop 01 24 30 =1903+097 18 57 23 46.6 176.7 -0.2 -2.0 120 2916 01 22 01 01 24 30 GRS1915 18 57 23 47.6 173.1 -0.3 -4.2 -29 2916 No stop 01 28 00 --- 19 00 54 47.6 174.4 -0.3 -3.4 181 2971 01 24 31 01 30 30 GRS1915 19 03 24 47.7 175.3 -0.2 -2.8 141 2971 01 30 30 01 34 00 --- 19 06 55 47.7 176.6 -0.2 -2.1 210 3025 01 30 31 01 34 40 J1905+0952 19 07 35 46.7 180.3 0.0 0.2 10 3025 01 34 40 01 36 30 =1903+097 19 09 25 46.7 181.0 0.0 0.6 110 3053 01 34 41 01 42 00 J1800+3848 19 14 56 70.8 228.6 1.2 35.2 128 3053 01 42 00 01 47 00 =1758+388 19 19 57 70.2 231.0 1.3 36.7 300 3130 01 42 01 01 49 00 J1905+0952 19 21 57 46.6 185.5 0.3 3.3 -76 3130 01 49 00 01 51 30 =1903+097 19 24 28 46.5 186.4 0.3 3.9 74 3169 01 49 01 01 51 30 GRS1915 19 24 28 47.7 183.0 0.1 1.8 -28 3169 No stop 01 55 00 --- 19 27 58 47.7 184.3 0.2 2.6 182 3223 01 51 31 01 55 00 J1905+0952 19 27 58 46.5 187.6 0.4 4.6 -29 3223 No stop 01 57 30 =1903+097 19 30 28 46.4 188.5 0.4 5.2 121 3262 01 55 01 01 57 30 GRS1915 19 30 28 47.6 185.2 0.2 3.2 -28 3262 No stop 02 01 00 --- 19 33 59 47.6 186.5 0.3 3.9 182 3316 01 57 31 02 03 30 GRS1915 19 36 29 47.6 187.4 0.3 4.5 141 3316 02 03 30 02 07 00 --- 19 40 00 47.5 188.7 0.4 5.3 210 3370 02 03 31 02 07 00 J1905+0952 19 40 00 46.1 191.9 0.6 7.2 -29 3370 No stop 02 09 30 =1903+097 19 42 30 46.1 192.8 0.6 7.7 121 3409 02 07 01 02 09 30 GRS1915 19 42 30 47.4 189.6 0.4 5.8 -28 3409 No stop 02 13 00 --- 19 46 01 47.3 190.8 0.5 6.6 182 3463 02 09 31 Schedule for JODRELL1 (Code Jb ) Page 7 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 02 15 30 GRS1915 19 48 31 47.3 191.7 0.5 7.1 141 3463 02 15 30 02 19 00 --- 19 52 02 47.1 193.0 0.6 7.9 210 3517 02 15 31 02 19 00 J1905+0952 19 52 02 45.7 196.1 0.8 9.7 -29 3517 No stop 02 21 30 =1903+097 19 54 32 45.6 197.0 0.8 10.2 121 3555 02 19 01 02 21 30 GRS1915 19 54 32 47.1 193.9 0.6 8.4 -27 3555 No stop 02 25 00 --- 19 58 03 46.9 195.1 0.7 9.2 183 3610 02 21 31 02 27 30 GRS1915 20 00 33 46.8 196.0 0.7 9.7 141 3610 02 27 30 02 31 00 --- 20 04 04 46.7 197.3 0.8 10.4 210 3664 02 27 31 02 31 00 J1905+0952 20 04 04 45.2 200.2 1.0 12.1 -28 3664 No stop 02 33 30 =1903+097 20 06 34 45.0 201.1 1.0 12.6 122 3702 02 31 01 02 33 30 GRS1915 20 06 34 46.6 198.1 0.8 10.9 -27 3702 No stop 02 37 00 --- 20 10 05 46.4 199.4 0.9 11.7 183 3756 02 33 31 02 39 30 GRS1915 20 12 35 46.3 200.2 0.9 12.2 141 3756 02 39 30 02 43 00 --- 20 16 06 46.1 201.4 1.0 12.9 210 3810 02 39 31 02 43 00 J1905+0952 20 16 06 44.5 204.3 1.2 14.5 -28 3810 No stop 02 45 30 =1903+097 20 18 36 44.3 205.1 1.2 15.0 122 3849 02 43 01 02 45 30 J1913+0932 20 18 36 44.5 202.5 1.1 13.4 -26 3849 No stop 02 49 00 --- 20 22 07 44.3 203.6 1.1 14.1 184 3903 02 45 31 02 50 00 J1905+0952 20 23 07 44.0 206.6 1.3 15.8 33 3903 02 50 00 02 52 30 =1903+097 20 25 38 43.8 207.5 1.3 16.3 150 3942 02 50 01 02 52 30 GRS1915 20 25 38 45.5 204.7 1.2 14.8 -26 3942 No stop 02 56 00 --- 20 29 08 45.3 205.9 1.2 15.4 184 3996 02 52 31 02 56 00 J1905+0952 20 29 08 43.6 208.6 1.4 16.9 -27 3996 No stop 02 58 30 =1903+097 20 31 39 43.4 209.4 1.4 17.4 123 4035 02 56 01 02 58 30 GRS1915 20 31 39 45.1 206.7 1.3 15.9 -26 4035 No stop 03 02 00 --- 20 35 09 44.9 207.9 1.3 16.6 184 4089 02 58 31 03 04 30 GRS1915 20 37 39 44.7 208.7 1.4 17.0 141 4089 03 04 30 03 08 00 --- 20 41 10 44.4 209.9 1.4 17.7 210 4143 03 04 31 03 08 00 J1905+0952 20 41 10 42.7 212.5 1.6 19.0 -26 4143 No stop 03 10 30 =1903+097 20 43 40 42.5 213.3 1.6 19.5 124 4181 03 08 01 Schedule for JODRELL1 (Code Jb ) Page 8 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 03 10 30 GRS1915 20 43 40 44.3 210.7 1.5 18.1 -25 4181 No stop 03 14 00 --- 20 47 11 44.0 211.8 1.5 18.8 185 4236 03 10 31 03 16 30 GRS1915 20 49 41 43.8 212.6 1.6 19.2 141 4236 03 16 30 03 20 00 --- 20 53 12 43.5 213.8 1.6 19.8 210 4290 03 16 31 03 20 00 J1905+0952 20 53 12 41.7 216.2 1.8 21.0 -26 4290 No stop 03 22 30 =1903+097 20 55 42 41.4 217.0 1.8 21.4 124 4328 03 20 01 03 22 30 GRS1915 20 55 42 43.3 214.6 1.7 20.2 -25 4328 No stop 03 26 00 --- 20 59 13 43.0 215.7 1.7 20.8 185 4382 03 22 31 03 28 30 GRS1915 21 01 43 42.8 216.4 1.8 21.2 141 4382 03 28 30 03 32 00 --- 21 05 14 42.4 217.5 1.8 21.8 210 4437 03 28 31 03 32 00 J1905+0952 21 05 14 40.6 219.9 2.0 22.9 -26 4437 No stop 03 34 30 =1903+097 21 07 44 40.3 220.6 2.0 23.3 124 4475 03 32 01 03 34 30 GRS1915 21 07 44 42.2 218.3 1.9 22.2 -26 4475 No stop 03 38 00 --- 21 11 15 41.9 219.4 1.9 22.8 184 4529 03 34 31 03 40 30 GRS1915 21 13 45 41.6 220.1 2.0 23.1 141 4529 03 40 30 03 44 00 --- 21 17 16 41.3 221.2 2.0 23.7 210 4583 03 40 31 03 44 00 J1905+0952 21 17 16 39.4 223.4 2.2 24.7 -27 4583 No stop 03 46 30 =1903+097 21 19 46 39.1 224.1 2.2 25.0 123 4622 03 44 01 03 46 30 J1913+0932 21 19 46 39.6 221.7 2.1 23.8 -25 4622 No stop 03 50 00 --- 21 23 17 39.2 222.7 2.1 24.3 185 4676 03 46 31 03 51 00 J1905+0952 21 24 17 38.6 225.4 2.3 25.6 34 4676 03 51 00 03 53 30 =1903+097 21 26 48 38.4 226.1 2.3 26.0 150 4715 03 51 01 03 53 30 GRS1915 21 26 48 40.3 224.0 2.2 25.1 -26 4715 No stop 03 57 00 --- 21 30 18 40.0 225.0 2.2 25.6 184 4769 03 53 31 03 57 00 J1905+0952 21 30 18 38.0 227.1 2.4 26.4 -27 4769 No stop 03 59 30 =1903+097 21 32 49 37.7 227.8 2.4 26.8 123 4808 03 57 01 03 59 30 GRS1915 21 32 49 39.7 225.8 2.3 25.9 -27 4808 No stop 04 03 00 --- 21 36 19 39.3 226.8 2.3 26.4 183 4862 03 59 31 04 05 30 GRS1915 21 38 50 39.1 227.5 2.4 26.7 141 4862 04 05 30 04 09 00 --- 21 42 20 38.7 228.4 2.4 27.1 210 4916 04 05 31 Schedule for JODRELL1 (Code Jb ) Page 9 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 04 09 00 J1905+0952 21 42 20 36.6 230.4 2.6 27.9 -27 4916 No stop 04 11 30 =1903+097 21 44 51 36.3 231.1 2.6 28.2 123 4954 04 09 01 04 11 30 GRS1915 21 44 51 38.4 229.1 2.5 27.5 -27 4954 No stop 04 15 00 --- 21 48 21 38.0 230.1 2.5 27.9 183 5008 04 11 31 04 17 30 GRS1915 21 50 51 37.7 230.8 2.6 28.2 141 5008 04 17 30 04 21 00 --- 21 54 22 37.3 231.8 2.6 28.6 210 5063 04 17 31 04 21 00 J1905+0952 21 54 22 35.2 233.7 2.8 29.3 -28 5063 No stop 04 23 30 =1903+097 21 56 52 34.9 234.3 2.8 29.6 122 5101 04 21 01 04 23 30 GRS1915 21 56 52 37.0 232.4 2.7 28.9 -27 5101 No stop 04 27 00 --- 22 00 23 36.6 233.4 2.7 29.3 183 5155 04 23 31 04 29 30 GRS1915 22 02 53 36.3 234.0 2.8 29.6 141 5155 04 29 30 04 33 00 --- 22 06 24 35.8 235.0 2.8 29.9 210 5209 04 29 31 04 33 00 J1905+0952 22 06 24 33.7 236.8 3.0 30.5 -28 5209 No stop 04 35 30 =1903+097 22 08 54 33.4 237.4 3.0 30.8 122 5248 04 33 01 04 35 30 GRS1915 22 08 54 35.5 235.6 2.9 30.2 -27 5248 No stop 04 39 00 --- 22 12 25 35.1 236.5 2.9 30.6 183 5302 04 35 31 04 41 30 GRS1915 22 14 55 34.8 237.2 3.0 30.8 141 5302 04 41 30 04 45 00 --- 22 18 26 34.3 238.1 3.0 31.2 210 5356 04 41 31 04 45 00 J1905+0952 22 18 26 32.2 239.8 3.2 31.7 -28 5356 No stop 04 47 30 =1903+097 22 20 56 31.9 240.4 3.2 31.9 122 5395 04 45 01 04 47 30 J1913+0932 22 20 56 32.6 238.3 3.1 31.1 -24 5395 No stop 04 51 00 --- 22 24 27 32.1 239.2 3.2 31.4 186 5449 04 47 31 04 52 00 J1905+0952 22 25 27 31.3 241.5 3.3 32.3 36 5449 04 52 00 04 54 30 =1903+097 22 27 58 30.9 242.1 3.4 32.5 150 5488 04 52 01 04 54 30 GRS1915 22 27 58 33.1 240.5 3.2 32.0 -28 5488 No stop 04 58 00 --- 22 31 28 32.7 241.3 3.3 32.3 182 5542 04 54 31 04 58 00 J1905+0952 22 31 28 30.5 243.0 3.4 32.8 -28 5542 No stop 05 00 30 =1903+097 22 33 59 30.1 243.6 3.5 33.0 122 5580 04 58 01 05 00 30 GRS1915 22 33 59 32.3 242.0 3.3 32.6 -28 5580 No stop 05 04 00 --- 22 37 29 31.9 242.8 3.4 32.8 182 5635 05 00 31 Schedule for JODRELL1 (Code Jb ) Page 10 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 ---------------------------------------------------------------------------------------- --- Thu 17 Jun 2021 Day 168 --- 05 06 30 GRS1915 22 40 00 31.5 243.4 3.4 33.0 142 5635 05 06 30 05 10 00 --- 22 43 30 31.0 244.3 3.5 33.3 210 5689 05 06 31 05 10 00 J1905+0952 22 43 30 28.9 245.8 3.6 33.7 -29 5689 No stop 05 12 30 =1903+097 22 46 01 28.5 246.4 3.7 33.8 121 5727 05 10 01 05 12 30 GRS1915 22 46 01 30.7 244.9 3.5 33.5 -28 5727 No stop 05 16 00 --- 22 49 31 30.2 245.7 3.6 33.8 182 5781 05 12 31 05 16 40 J1905+0952 22 50 11 27.9 247.4 3.7 34.1 11 5781 05 16 40 05 18 30 =1903+097 22 52 02 27.7 247.8 3.8 34.2 110 5810 05 16 41 05 18 30 J1913+0932 22 52 02 28.5 245.8 3.6 33.6 -23 5810 No stop 05 21 00 --- 22 54 32 28.1 246.4 3.7 33.8 127 5848 05 18 31 05 21 00 J1905+0952 22 54 32 27.3 248.4 3.8 34.4 -24 5848 No stop 05 23 30 =1903+097 22 57 02 27.0 248.9 3.8 34.5 126 5887 05 21 01 05 23 30 J2253+1608 22 57 02 53.0 180.8 0.0 0.5 -281 5887 No stop 05 30 00 =3C454.3 23 03 33 53.0 183.4 0.1 2.1 109 5988 05 23 31 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess221.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: 5 Station: JODRELL1 Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 5664.00 Net SB= L L U U L L U U L L U U L L U U IF SB = L L L L L L L L L L L L L L L L 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= U U L L U U L L U U L L U U L L IF = A1 B1 A1 B1 A1 B1 A1 B1 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= 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= 833.51 833.51 833.51 833.51 769.51 769.51 769.51 769.51 705.51 705.51 705.51 705.51 641.51 641.51 641.51 641.51 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: 1 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 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 12.613599 0.00 GRS1915+105 10 51 26.57111 * 10 56 44.62477 10 58 57.34646 0.00 From catalog imbedded in main SCHED input file. * J1913+0932 19 11 00.869981 * 19 13 24.025348 19 14 25.756814 0.00 09 27 34.81592 * 09 32 45.37648 09 34 55.17469 0.00 From catalog imbedded in main SCHED input file. 1758+388 17 58 44.703954 * 18 00 24.765363 18 01 08.766849 0.01 * J1800+3848 38 48 32.47350 * 38 48 30.69748 38 48 27.99045 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 41.444755 0.13 * J1905+0952 09 47 30.15815 * 09 52 08.40750 09 54 04.60661 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 55 00.676644 0.65 * J2253+1608 15 52 54.34808 * 16 08 53.56091 16 15 33.13978 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 sess221.C2048 1 2 3 4 5 6 7 8 9 10 11 12 + 3.908 526.698 J1913+0932 sess221.C2048 1 2 3 4 5 6 7 8 9 10 11 12 + 0.433 53.886 J1800+3848 sess221.C2048 1 2 3 4 5 6 7 8 9 10 11 12 + 0.167 23.790 J1905+0952 sess221.C2048 1 2 3 4 5 6 7 8 9 10 11 12 + 2.853 368.153 J2253+1608 sess221.C2048 1 2 3 4 5 6 8 9 10 11 12 15 0.108 8.729 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 138.8 J1913+0932 140.2 J1800+3848 117.7 J1905+0952 140.9 J2253+1608 94.1 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