COVER INFORMATION Station: MEDICINA (Code Mc ) 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 MEDICINA (Code Mc ) 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: 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 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 21 30 00 J1800+3848 15 58 04 66.5 453.2 -2.1 -66.0 0 0 21 30 00 21 35 00 =1758+388 16 03 05 67.4 454.3 -2.0 -65.8 300 77 21 30 01 21 37 00 J1905+0952 16 05 05 37.9 477.3 -3.0 -40.0 56 77 21 37 00 21 39 30 =1903+097 16 07 35 38.3 477.9 -3.0 -39.8 150 116 21 37 01 21 39 30 GRS1915 16 07 35 37.6 474.8 -3.1 -41.3 -8 116 No stop 21 43 00 --- 16 11 06 38.1 475.6 -3.1 -40.9 202 170 21 39 31 21 43 40 J1905+0952 16 11 46 38.9 478.9 -2.9 -39.3 32 170 21 43 40 21 45 30 =1903+097 16 13 36 39.2 479.4 -2.9 -39.1 110 198 21 43 41 21 45 30 GRS1915 16 13 36 38.5 476.2 -3.0 -40.7 -8 198 No stop 21 49 00 --- 16 17 07 39.1 477.0 -3.0 -40.3 202 252 21 45 31 21 49 00 J1905+0952 16 17 07 39.7 480.3 -2.8 -38.7 -8 252 No stop 21 51 30 =1903+097 16 19 37 40.1 480.9 -2.8 -38.4 142 291 21 49 01 21 51 30 GRS1915 16 19 37 39.5 477.6 -2.9 -40.0 -8 291 No stop 21 55 00 --- 16 23 08 40.0 478.5 -2.9 -39.7 202 345 21 51 31 21 55 40 J1905+0952 16 23 48 40.8 482.0 -2.7 -37.9 32 345 21 55 40 21 57 30 =1903+097 16 25 38 41.0 482.4 -2.7 -37.7 110 374 21 55 41 21 57 30 GRS1915 16 25 38 40.4 479.1 -2.8 -39.4 -8 374 No stop 22 01 00 --- 16 29 09 41.0 480.0 -2.8 -39.0 202 428 21 57 31 22 01 00 J1905+0952 16 29 09 41.6 483.3 -2.6 -37.2 -8 428 No stop 22 03 30 =1903+097 16 31 39 41.9 484.0 -2.6 -36.9 142 466 22 01 01 22 03 30 GRS1915 16 31 39 41.4 480.6 -2.7 -38.7 -8 466 No stop 22 07 00 --- 16 35 10 41.9 481.5 -2.7 -38.2 202 520 22 03 31 22 07 40 J1905+0952 16 35 50 42.5 485.1 -2.5 -36.3 32 520 22 07 40 22 09 30 =1903+097 16 37 40 42.8 485.6 -2.5 -36.0 110 549 22 07 41 22 09 30 GRS1915 16 37 40 42.3 482.2 -2.6 -37.9 -8 549 No stop 22 13 00 --- 16 41 11 42.8 483.1 -2.6 -37.5 202 603 22 09 31 Schedule for MEDICINA (Code Mc ) 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 13 00 J1905+0952 16 41 11 43.3 486.6 -2.4 -35.5 -9 603 No stop 22 15 30 =1903+097 16 43 41 43.7 487.3 -2.4 -35.2 141 642 22 13 01 22 15 30 GRS1915 16 43 41 43.2 483.8 -2.5 -37.1 -9 642 No stop 22 19 00 --- 16 47 12 43.7 484.7 -2.5 -36.6 201 696 22 15 31 22 19 40 J1905+0952 16 47 52 44.3 488.4 -2.3 -34.5 31 696 22 19 40 22 21 30 =1903+097 16 49 42 44.5 489.0 -2.3 -34.2 110 724 22 19 41 22 21 30 GRS1915 16 49 42 44.1 485.4 -2.4 -36.3 -9 724 No stop 22 25 00 --- 16 53 13 44.6 486.4 -2.4 -35.8 201 778 22 21 31 22 25 00 J1905+0952 16 53 13 45.0 490.0 -2.2 -33.7 -9 778 No stop 22 27 30 =1903+097 16 55 43 45.3 490.7 -2.2 -33.3 141 817 22 25 01 22 27 30 GRS1915 16 55 43 44.9 487.1 -2.3 -35.4 -9 817 No stop 22 31 00 --- 16 59 14 45.4 488.1 -2.3 -34.9 201 871 22 27 31 22 31 40 J1905+0952 16 59 54 45.9 491.9 -2.1 -32.6 31 871 22 31 40 22 33 30 =1903+097 17 01 44 46.1 492.5 -2.1 -32.3 110 899 22 31 41 22 33 30 J1913+0932 17 01 44 44.8 490.5 -2.2 -33.4 -7 899 No stop 22 37 00 --- 17 05 15 45.3 491.5 -2.2 -32.8 203 953 22 33 31 22 38 00 J1905+0952 17 06 15 46.7 493.9 -2.0 -31.5 53 953 22 38 00 22 40 30 =1903+097 17 08 45 47.1 494.6 -2.0 -31.0 150 992 22 38 01 22 40 30 GRS1915 17 08 45 46.7 490.9 -2.1 -33.3 -9 992 No stop 22 44 00 --- 17 12 16 47.2 491.9 -2.1 -32.7 201 1046 22 40 31 22 44 00 J1905+0952 17 12 16 47.5 495.7 -1.9 -30.3 -9 1046 No stop 22 46 30 =1903+097 17 14 46 47.8 496.5 -1.9 -29.9 141 1085 22 44 01 22 46 30 GRS1915 17 14 46 47.5 492.7 -2.0 -32.3 -9 1085 No stop 22 50 00 --- 17 18 17 48.0 493.8 -2.0 -31.6 201 1139 22 46 31 22 50 40 J1905+0952 17 18 57 48.3 497.9 -1.8 -29.1 31 1139 22 50 40 22 52 30 =1903+097 17 20 47 48.5 498.5 -1.8 -28.7 110 1167 22 50 41 22 52 30 GRS1915 17 20 47 48.3 494.6 -1.9 -31.1 -9 1167 No stop 22 56 00 --- 17 24 18 48.7 495.7 -1.9 -30.5 201 1221 22 52 31 22 56 00 J1905+0952 17 24 18 48.9 499.6 -1.7 -28.0 -9 1221 No stop 22 58 30 =1903+097 17 26 48 49.2 500.4 -1.7 -27.4 141 1260 22 56 01 Schedule for MEDICINA (Code Mc ) 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 --- 22 58 30 GRS1915 17 26 48 49.0 496.5 -1.8 -30.0 -9 1260 No stop 23 02 00 --- 17 30 19 49.5 497.7 -1.8 -29.3 201 1314 22 58 31 23 02 40 J1905+0952 17 30 59 49.7 501.9 -1.6 -26.6 31 1314 23 02 40 23 04 30 =1903+097 17 32 49 49.9 502.5 -1.6 -26.2 110 1342 23 02 41 23 04 30 GRS1915 17 32 49 49.8 498.5 -1.7 -28.8 -9 1342 No stop 23 08 00 --- 17 36 20 50.2 499.7 -1.7 -28.0 201 1396 23 04 31 23 08 00 J1905+0952 17 36 20 50.3 503.7 -1.5 -25.4 -9 1396 No stop 23 10 30 =1903+097 17 38 50 50.5 504.6 -1.5 -24.8 141 1435 23 08 01 23 10 30 GRS1915 17 38 50 50.5 500.5 -1.6 -27.5 -9 1435 No stop 23 14 00 --- 17 42 21 50.9 501.7 -1.6 -26.7 201 1489 23 10 31 23 14 40 J1905+0952 17 43 01 51.0 506.1 -1.4 -23.8 31 1489 23 14 40 23 16 30 =1903+097 17 44 51 51.1 506.7 -1.4 -23.4 110 1517 23 14 41 23 16 30 GRS1915 17 44 51 51.1 502.6 -1.5 -26.2 -9 1517 No stop 23 20 00 --- 17 48 22 51.5 503.9 -1.5 -25.4 201 1572 23 16 31 23 20 00 J1905+0952 17 48 22 51.5 508.0 -1.3 -22.6 -9 1572 No stop 23 22 30 =1903+097 17 50 52 51.7 508.9 -1.3 -21.9 141 1610 23 20 01 23 22 30 GRS1915 17 50 52 51.8 504.7 -1.4 -24.8 -9 1610 No stop 23 26 00 --- 17 54 23 52.1 506.0 -1.4 -23.9 201 1664 23 22 31 23 26 40 J1905+0952 17 55 03 52.1 510.5 -1.2 -20.9 30 1664 23 26 40 23 28 30 =1903+097 17 56 53 52.2 511.2 -1.2 -20.4 110 1693 23 26 41 23 28 30 GRS1915 17 56 53 52.4 506.9 -1.3 -23.3 -9 1693 No stop 23 32 00 --- 18 00 24 52.7 508.2 -1.3 -22.5 201 1747 23 28 31 23 32 00 J1905+0952 18 00 24 52.5 512.5 -1.1 -19.5 -10 1747 No stop 23 34 30 =1903+097 18 02 54 52.7 513.4 -1.1 -18.9 140 1785 23 32 01 23 34 30 J1913+0932 18 02 54 51.8 510.7 -1.2 -20.7 -8 1785 No stop 23 38 00 --- 18 06 25 52.1 512.0 -1.1 -19.8 202 1840 23 34 31 23 39 00 J1905+0952 18 07 25 53.1 515.2 -1.0 -17.7 52 1840 23 39 00 23 41 30 =1903+097 18 09 55 53.3 516.2 -0.9 -17.0 150 1878 23 39 01 23 41 30 GRS1915 18 09 55 53.6 511.9 -1.1 -20.0 -10 1878 No stop 23 45 00 --- 18 13 26 53.8 513.2 -1.0 -19.1 200 1932 23 41 31 Schedule for MEDICINA (Code Mc ) 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 ---------------------------------------------------------------------------------------- --- Wed 16 Jun 2021 Day 167 --- 23 45 00 J1905+0952 18 13 26 53.5 517.6 -0.9 -16.0 -10 1932 No stop 23 47 30 =1903+097 18 15 56 53.7 518.6 -0.8 -15.3 140 1971 23 45 01 23 47 30 GRS1915 18 15 56 54.0 514.2 -1.0 -18.4 -10 1971 No stop 23 51 00 --- 18 19 27 54.3 515.6 -0.9 -17.4 200 2025 23 47 31 23 51 40 J1905+0952 18 20 07 53.9 520.3 -0.8 -14.2 30 2025 23 51 40 23 53 30 =1903+097 18 21 57 54.1 521.0 -0.7 -13.6 110 2053 23 51 41 23 53 30 GRS1915 18 21 57 54.5 516.7 -0.9 -16.7 -10 2053 No stop 23 57 00 --- 18 25 28 54.7 518.1 -0.8 -15.7 200 2107 23 53 31 23 57 00 J1905+0952 18 25 28 54.3 522.4 -0.7 -12.6 -10 2107 No stop 23 59 30 =1903+097 18 27 58 54.4 523.5 -0.6 -11.9 140 2146 23 57 01 --- Start: Wed 16 Jun 2021 Day 167 -- Stop: Thu 17 Jun 2021 Day 168 --- 23 59 30 GRS1915 18 27 58 54.9 519.1 -0.8 -15.0 -10 2146 No stop 00 03 00 --- 18 31 29 55.1 520.6 -0.7 -14.0 200 2200 23 59 31 00 03 40 J1905+0952 18 32 09 54.6 525.2 -0.6 -10.6 30 2200 00 03 40 00 05 30 =1903+097 18 33 59 54.7 526.0 -0.5 -10.1 110 2229 00 03 41 00 05 30 GRS1915 18 33 59 55.3 521.6 -0.7 -13.2 -10 2229 No stop 00 09 00 --- 18 37 30 55.4 523.1 -0.6 -12.2 200 2283 00 05 31 00 09 00 J1905+0952 18 37 30 54.8 527.5 -0.5 -9.0 -10 2283 No stop 00 11 30 =1903+097 18 40 00 54.9 528.5 -0.4 -8.3 140 2321 00 09 01 00 11 30 GRS1915 18 40 00 55.6 524.1 -0.6 -11.4 -10 2321 No stop 00 15 00 --- 18 43 31 55.7 525.6 -0.5 -10.4 200 2375 00 11 31 00 15 40 J1905+0952 18 44 11 55.0 530.3 -0.4 -7.0 30 2375 00 15 40 00 17 30 =1903+097 18 46 01 55.1 531.1 -0.3 -6.4 110 2404 00 15 41 00 17 30 GRS1915 18 46 01 55.8 526.7 -0.5 -9.6 -10 2404 No stop 00 21 00 --- 18 49 32 56.0 528.2 -0.4 -8.5 200 2458 00 17 31 00 21 00 J1905+0952 18 49 32 55.2 532.6 -0.3 -5.4 -10 2458 No stop 00 23 30 =1903+097 18 52 02 55.2 533.7 -0.2 -4.6 140 2497 00 21 01 00 23 30 GRS1915 18 52 02 56.1 529.3 -0.4 -7.7 -10 2497 No stop 00 27 00 --- 18 55 33 56.2 530.9 -0.3 -6.6 200 2551 00 23 31 Schedule for MEDICINA (Code Mc ) 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 --- 00 27 40 J1905+0952 18 56 13 55.3 535.5 -0.2 -3.3 30 2551 00 27 40 00 29 30 =1903+097 18 58 03 55.3 536.3 -0.1 -2.7 110 2579 00 27 41 00 29 30 GRS1915 18 58 03 56.2 532.0 -0.3 -5.8 -10 2579 No stop 00 33 00 --- 19 01 34 56.3 533.5 -0.2 -4.7 200 2633 00 29 31 00 33 00 J1905+0952 19 01 34 55.4 537.8 -0.1 -1.6 -10 2633 No stop 00 35 30 =1903+097 19 04 04 55.4 538.9 -0.0 -0.8 140 2672 00 33 01 00 35 30 J1913+0932 19 04 04 55.0 535.5 -0.2 -3.2 -8 2672 No stop 00 39 00 --- 19 07 35 55.0 537.1 -0.1 -2.1 202 2726 00 35 31 00 40 00 J1905+0952 19 08 35 55.4 540.8 0.0 0.6 52 2726 00 40 00 00 42 30 =1903+097 19 11 05 55.4 541.9 0.1 1.4 150 2764 00 40 01 00 42 30 GRS1915 19 11 05 56.4 537.7 -0.1 -1.7 -9 2764 No stop 00 46 00 --- 19 14 36 56.5 539.3 -0.0 -0.5 201 2819 00 42 31 00 46 00 J1905+0952 19 14 36 55.3 543.4 0.1 2.5 -9 2819 No stop 00 48 30 =1903+097 19 17 06 55.3 544.5 0.2 3.3 141 2857 00 46 01 00 48 30 GRS1915 19 17 06 56.5 540.4 0.0 0.3 -9 2857 No stop 00 52 00 --- 19 20 37 56.4 542.0 0.1 1.4 201 2911 00 48 31 00 52 40 J1905+0952 19 21 17 55.2 546.3 0.2 4.6 31 2911 00 52 40 00 54 30 =1903+097 19 23 07 55.2 547.1 0.3 5.1 110 2940 00 52 41 00 54 30 GRS1915 19 23 07 56.4 543.1 0.1 2.2 -9 2940 No stop 00 58 00 --- 19 26 38 56.4 544.6 0.2 3.4 201 2994 00 54 31 00 58 00 J1905+0952 19 26 38 55.1 548.6 0.3 6.2 -9 2994 No stop 01 00 30 =1903+097 19 29 08 55.0 549.7 0.4 7.0 141 3032 00 58 01 01 00 30 GRS1915 19 29 08 56.3 545.7 0.2 4.2 -9 3032 No stop 01 04 00 --- 19 32 39 56.3 547.3 0.3 5.3 201 3087 01 00 31 01 04 40 J1905+0952 19 33 19 54.9 551.5 0.4 8.3 31 3087 01 04 40 01 06 30 =1903+097 19 35 09 54.8 552.2 0.5 8.8 110 3115 01 04 41 01 06 30 GRS1915 19 35 09 56.2 548.4 0.3 6.1 -9 3115 No stop 01 10 00 --- 19 38 40 56.1 549.9 0.4 7.2 201 3169 01 06 31 01 10 00 J1905+0952 19 38 40 54.7 553.7 0.5 9.9 -9 3169 No stop 01 12 30 =1903+097 19 41 10 54.6 554.8 0.6 10.6 141 3208 01 10 01 Schedule for MEDICINA (Code Mc ) 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 --- 01 12 30 GRS1915 19 41 10 56.0 551.0 0.4 8.0 -9 3208 No stop 01 16 00 --- 19 44 41 55.9 552.5 0.5 9.1 201 3262 01 12 31 01 16 40 J1905+0952 19 45 21 54.4 556.5 0.6 11.9 31 3262 01 16 40 01 18 30 =1903+097 19 47 11 54.3 557.3 0.7 12.4 110 3290 01 16 41 01 18 30 GRS1915 19 47 11 55.8 553.6 0.5 9.8 -9 3290 No stop 01 22 00 --- 19 50 42 55.7 555.1 0.6 10.9 201 3344 01 18 31 01 22 00 J1905+0952 19 50 42 54.1 558.7 0.7 13.4 -9 3344 No stop 01 24 30 =1903+097 19 53 12 54.0 559.7 0.8 14.1 141 3383 01 22 01 01 24 30 GRS1915 19 53 12 55.5 556.2 0.6 11.7 -9 3383 No stop 01 28 00 --- 19 56 43 55.3 557.7 0.7 12.7 201 3437 01 24 31 01 28 40 J1905+0952 19 57 23 53.7 561.4 0.8 15.3 31 3437 01 28 40 01 30 30 =1903+097 19 59 13 53.6 562.1 0.9 15.8 110 3465 01 28 41 01 30 30 GRS1915 19 59 13 55.2 558.7 0.7 13.5 -8 3465 No stop 01 34 00 --- 20 02 44 55.0 560.2 0.8 14.5 202 3519 01 30 31 01 34 40 J1905+0952 20 03 24 53.3 563.8 0.9 17.0 32 3519 01 34 40 01 36 30 =1903+097 20 05 14 53.1 564.5 1.0 17.5 110 3548 01 34 41 01 36 30 J1913+0932 20 05 14 53.4 561.3 0.8 15.2 -8 3548 No stop 01 39 00 --- 20 07 45 53.2 562.3 0.9 15.9 142 3586 01 36 31 01 39 00 J1905+0952 20 07 45 53.0 565.5 1.0 18.2 -8 3586 No stop 01 41 30 =1903+097 20 10 15 52.8 566.5 1.1 18.8 142 3625 01 39 01 01 42 00 J1800+3848 20 10 45 65.3 628.0 2.2 66.1 -56 3625 01 42 00 01 47 00 =1758+388 20 15 46 64.4 628.9 2.2 66.2 244 3702 01 42 01 01 49 00 J1905+0952 20 17 46 52.1 569.3 1.2 20.8 36 3702 01 49 00 01 51 30 =1903+097 20 20 17 51.9 570.3 1.2 21.4 150 3741 01 49 01 01 51 30 GRS1915 20 20 17 53.7 567.3 1.1 19.4 -8 3741 No stop 01 55 00 --- 20 23 47 53.4 568.6 1.1 20.4 202 3795 01 51 31 01 55 00 J1905+0952 20 23 47 51.6 571.6 1.3 22.3 -8 3795 No stop 01 57 30 =1903+097 20 26 18 51.4 572.5 1.3 22.9 142 3834 01 55 01 01 57 30 GRS1915 20 26 18 53.2 569.6 1.2 21.0 -8 3834 No stop 02 01 00 --- 20 29 48 52.9 570.9 1.2 21.9 202 3888 01 57 31 Schedule for MEDICINA (Code Mc ) 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 --- 02 01 40 J1905+0952 20 30 29 50.9 574.0 1.4 23.9 32 3888 02 01 40 02 03 30 =1903+097 20 32 19 50.8 574.6 1.4 24.3 110 3916 02 01 41 02 03 30 GRS1915 20 32 19 52.7 571.9 1.3 22.5 -8 3916 No stop 02 07 00 --- 20 35 49 52.3 573.2 1.3 23.4 202 3970 02 03 31 02 07 00 J1905+0952 20 35 49 50.4 575.9 1.5 25.1 -9 3970 No stop 02 09 30 =1903+097 20 38 20 50.1 576.7 1.5 25.7 141 4009 02 07 01 02 09 30 GRS1915 20 38 20 52.1 574.1 1.4 24.0 -9 4009 No stop 02 13 00 --- 20 41 50 51.7 575.4 1.4 24.9 201 4063 02 09 31 02 13 40 J1905+0952 20 42 30 49.7 578.2 1.6 26.6 31 4063 02 13 40 02 15 30 =1903+097 20 44 21 49.5 578.8 1.6 27.0 110 4091 02 13 41 02 15 30 GRS1915 20 44 21 51.5 576.3 1.5 25.4 -9 4091 No stop 02 19 00 --- 20 47 51 51.1 577.5 1.5 26.2 201 4145 02 15 31 02 19 00 J1905+0952 20 47 51 49.1 580.0 1.7 27.7 -9 4145 No stop 02 21 30 =1903+097 20 50 22 48.8 580.8 1.7 28.2 141 4184 02 19 01 02 21 30 GRS1915 20 50 22 50.8 578.4 1.6 26.8 -9 4184 No stop 02 25 00 --- 20 53 52 50.4 579.6 1.6 27.6 201 4238 02 21 31 02 25 40 J1905+0952 20 54 32 48.3 582.2 1.8 29.1 31 4238 02 25 40 02 27 30 =1903+097 20 56 23 48.1 582.8 1.8 29.4 110 4266 02 25 41 02 27 30 GRS1915 20 56 23 50.1 580.4 1.7 28.1 -9 4266 No stop 02 31 00 --- 20 59 53 49.7 581.6 1.7 28.8 201 4321 02 27 31 02 31 00 J1905+0952 20 59 53 47.6 583.9 1.9 30.1 -9 4321 No stop 02 33 30 =1903+097 21 02 24 47.3 584.7 1.9 30.6 141 4359 02 31 01 02 33 30 GRS1915 21 02 24 49.4 582.4 1.8 29.3 -9 4359 No stop 02 37 00 --- 21 05 54 49.0 583.6 1.8 30.0 201 4413 02 33 31 02 37 40 J1905+0952 21 06 34 46.8 586.0 2.0 31.4 31 4413 02 37 40 02 39 30 =1903+097 21 08 25 46.6 586.5 2.0 31.7 110 4442 02 37 41 02 39 30 GRS1915 21 08 25 48.7 584.4 1.9 30.5 -9 4442 No stop 02 43 00 --- 21 11 55 48.3 585.5 1.9 31.2 201 4496 02 39 31 02 43 00 J1905+0952 21 11 55 46.1 587.6 2.1 32.3 -9 4496 No stop 02 45 30 =1903+097 21 14 26 45.8 588.3 2.1 32.7 141 4534 02 43 01 Schedule for MEDICINA (Code Mc ) 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 --- 02 45 30 J1913+0932 21 14 26 46.5 585.8 2.0 31.2 -7 4534 No stop 02 49 00 --- 21 17 56 46.1 586.8 2.1 31.8 203 4589 02 45 31 02 50 00 J1905+0952 21 18 56 45.2 589.7 2.2 33.5 53 4589 02 50 00 02 52 30 =1903+097 21 21 27 44.8 590.4 2.2 33.9 150 4627 02 50 01 02 52 30 GRS1915 21 21 27 47.0 588.4 2.1 32.9 -9 4627 No stop 02 56 00 --- 21 24 57 46.5 589.5 2.1 33.5 201 4681 02 52 31 02 56 00 J1905+0952 21 24 57 44.3 591.4 2.3 34.4 -9 4681 No stop 02 58 30 =1903+097 21 27 28 44.0 592.1 2.3 34.8 141 4720 02 56 01 02 58 30 GRS1915 21 27 28 46.2 590.2 2.2 33.9 -9 4720 No stop 03 02 00 --- 21 30 58 45.7 591.3 2.2 34.5 201 4774 02 58 31 03 02 40 J1905+0952 21 31 39 43.4 593.3 2.4 35.5 31 4774 03 02 40 03 04 30 =1903+097 21 33 29 43.1 593.8 2.4 35.7 110 4802 03 02 41 03 04 30 GRS1915 21 33 29 45.4 592.0 2.3 34.9 -9 4802 No stop 03 08 00 --- 21 36 59 44.9 593.0 2.3 35.4 201 4856 03 04 31 03 08 00 J1905+0952 21 36 59 42.6 594.7 2.5 36.2 -9 4856 No stop 03 10 30 =1903+097 21 39 30 42.3 595.4 2.5 36.6 141 4895 03 08 01 03 10 30 GRS1915 21 39 30 44.5 593.7 2.4 35.8 -9 4895 No stop 03 14 00 --- 21 43 00 44.0 594.7 2.4 36.3 201 4949 03 10 31 03 14 40 J1905+0952 21 43 40 41.6 596.5 2.6 37.1 31 4949 03 14 40 03 16 30 =1903+097 21 45 31 41.4 597.0 2.6 37.4 110 4978 03 14 41 03 16 30 GRS1915 21 45 31 43.6 595.3 2.5 36.7 -9 4978 No stop 03 20 00 --- 21 49 01 43.1 596.3 2.5 37.2 201 5032 03 16 31 03 20 00 J1905+0952 21 49 01 40.8 597.9 2.7 37.8 -9 5032 No stop 03 22 30 =1903+097 21 51 32 40.5 598.5 2.7 38.1 141 5070 03 20 01 03 22 30 GRS1915 21 51 32 42.8 597.0 2.6 37.5 -9 5070 No stop 03 26 00 --- 21 55 02 42.2 597.9 2.6 38.0 201 5124 03 22 31 03 26 40 J1905+0952 21 55 42 39.8 599.6 2.8 38.6 31 5124 03 26 40 03 28 30 =1903+097 21 57 33 39.5 600.1 2.8 38.8 110 5153 03 26 41 03 28 30 GRS1915 21 57 33 41.8 598.5 2.7 38.3 -9 5153 No stop 03 32 00 --- 22 01 03 41.3 599.4 2.7 38.7 201 5207 03 28 31 Schedule for MEDICINA (Code Mc ) 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 --- 03 32 00 J1905+0952 22 01 03 39.0 600.9 2.9 39.2 -9 5207 No stop 03 34 30 =1903+097 22 03 34 38.6 601.5 2.9 39.5 141 5246 03 32 01 03 34 30 GRS1915 22 03 34 40.9 600.1 2.8 39.0 -9 5246 No stop 03 38 00 --- 22 07 04 40.4 600.9 2.8 39.4 201 5300 03 34 31 03 38 40 J1905+0952 22 07 44 37.9 602.5 3.0 40.0 31 5300 03 38 40 03 40 30 =1903+097 22 09 35 37.7 603.0 3.0 40.2 110 5328 03 38 41 03 40 30 GRS1915 22 09 35 40.0 601.6 2.9 39.7 -9 5328 No stop 03 44 00 --- 22 13 05 39.4 602.4 2.9 40.1 201 5382 03 40 31 03 44 00 J1905+0952 22 13 05 37.1 603.8 3.1 40.5 -9 5382 No stop 03 46 30 =1903+097 22 15 36 36.7 604.4 3.1 40.7 141 5421 03 44 01 03 46 30 J1913+0932 22 15 36 37.7 602.3 3.0 39.8 -7 5421 No stop 03 50 00 --- 22 19 06 37.1 603.1 3.1 40.2 203 5475 03 46 31 03 51 00 J1905+0952 22 20 06 36.0 605.4 3.2 41.2 53 5475 03 51 00 03 53 30 =1903+097 22 22 37 35.6 606.0 3.3 41.4 150 5513 03 51 01 03 53 30 GRS1915 22 22 37 37.9 604.7 3.1 41.0 -9 5513 No stop 03 57 00 --- 22 26 07 37.3 605.5 3.2 41.4 201 5568 03 53 31 03 57 00 J1905+0952 22 26 07 35.0 606.8 3.3 41.7 -9 5568 No stop 03 59 30 =1903+097 22 28 38 34.6 607.4 3.4 41.9 141 5606 03 57 01 03 59 30 GRS1915 22 28 38 36.9 606.1 3.2 41.6 -9 5606 No stop 04 03 00 --- 22 32 08 36.4 606.9 3.3 41.9 201 5660 03 59 31 04 03 40 J1905+0952 22 32 49 33.9 608.3 3.4 42.3 31 5660 04 03 40 04 05 30 =1903+097 22 34 39 33.6 608.7 3.5 42.4 110 5689 04 03 41 04 05 30 GRS1915 22 34 39 36.0 607.5 3.3 42.1 -9 5689 No stop 04 09 00 --- 22 38 09 35.4 608.3 3.4 42.4 201 5743 04 05 31 04 09 00 J1905+0952 22 38 09 33.0 609.5 3.5 42.7 -9 5743 No stop 04 11 30 =1903+097 22 40 40 32.6 610.0 3.6 42.9 141 5781 04 09 01 04 11 30 GRS1915 22 40 40 35.0 608.8 3.4 42.6 -9 5781 No stop 04 15 00 --- 22 44 10 34.4 609.6 3.5 42.9 201 5836 04 11 31 04 15 40 J1905+0952 22 44 51 31.9 610.9 3.6 43.1 31 5836 04 15 40 04 17 30 =1903+097 22 46 41 31.6 611.3 3.7 43.3 110 5864 04 15 41 Schedule for MEDICINA (Code Mc ) Page 11 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 17 30 GRS1915 22 46 41 34.0 610.1 3.5 43.1 -9 5864 No stop 04 21 00 --- 22 50 11 33.4 610.9 3.6 43.3 201 5918 04 17 31 04 21 00 J1905+0952 22 50 11 31.0 612.0 3.7 43.5 -9 5918 No stop 04 23 30 =1903+097 22 52 42 30.5 612.5 3.8 43.7 141 5957 04 21 01 04 23 30 GRS1915 22 52 42 32.9 611.4 3.6 43.5 -9 5957 No stop 04 27 00 --- 22 56 12 32.3 612.1 3.7 43.7 201 6011 04 23 31 04 27 40 J1905+0952 22 56 52 29.8 613.4 3.8 43.9 31 6011 04 27 40 04 29 30 =1903+097 22 58 43 29.5 613.8 3.9 44.0 110 6039 04 27 41 04 29 30 GRS1915 22 58 43 31.9 612.7 3.7 43.9 -9 6039 No stop 04 33 00 --- 23 02 13 31.3 613.4 3.8 44.1 201 6093 04 29 31 04 33 00 J1905+0952 23 02 13 28.9 614.5 3.9 44.2 -9 6093 No stop 04 35 30 =1903+097 23 04 44 28.5 615.0 4.0 44.3 141 6132 04 33 01 04 35 30 GRS1915 23 04 44 30.9 613.9 3.8 44.3 -9 6132 No stop 04 39 00 --- 23 08 14 30.3 614.6 3.9 44.5 201 6186 04 35 31 04 39 40 J1905+0952 23 08 54 27.8 615.8 4.0 44.6 31 6186 04 39 40 04 41 30 =1903+097 23 10 45 27.4 616.2 4.1 44.7 110 6214 04 39 41 04 41 30 GRS1915 23 10 45 29.9 615.1 3.9 44.6 -9 6214 No stop 04 45 00 --- 23 14 15 29.3 615.8 4.0 44.8 201 6268 04 41 31 04 45 00 J1905+0952 23 14 15 26.8 616.9 4.1 44.8 -9 6268 No stop 04 47 30 =1903+097 23 16 46 26.4 617.4 4.2 44.9 141 6307 04 45 01 04 47 30 J1913+0932 23 16 46 27.5 615.6 4.0 44.5 -7 6307 No stop 04 51 00 --- 23 20 16 26.9 616.3 4.1 44.6 203 6361 04 47 31 04 52 00 J1905+0952 23 21 16 25.6 618.2 4.2 45.1 53 6361 04 52 00 04 54 30 =1903+097 23 23 47 25.2 618.7 4.3 45.2 150 6400 04 52 01 04 54 30 GRS1915 23 23 47 27.6 617.7 4.1 45.2 -9 6400 No stop 04 58 00 --- 23 27 17 27.0 618.4 4.2 45.4 201 6454 04 54 31 04 58 00 J1905+0952 23 27 17 24.6 619.4 4.3 45.3 -10 6454 No stop 05 00 30 =1903+097 23 29 48 24.1 619.9 4.4 45.4 140 6492 04 58 01 05 00 30 GRS1915 23 29 48 26.6 618.9 4.2 45.5 -9 6492 No stop 05 04 00 --- 23 33 18 25.9 619.6 4.3 45.6 201 6547 05 00 31 Schedule for MEDICINA (Code Mc ) Page 12 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 04 40 J1905+0952 23 33 59 23.4 620.6 4.5 45.6 30 6547 05 04 40 05 06 30 =1903+097 23 35 49 23.1 621.0 4.5 45.6 110 6575 05 04 41 05 06 30 GRS1915 23 35 49 25.5 620.0 4.3 45.7 -9 6575 No stop 05 10 00 --- 23 39 19 24.9 620.7 4.4 45.8 201 6629 05 06 31 05 10 00 J1905+0952 23 39 19 22.5 621.6 4.5 45.7 -10 6629 No stop 05 12 30 =1903+097 23 41 50 22.0 622.1 4.6 45.8 140 6668 05 10 01 05 12 30 GRS1915 23 41 50 24.4 621.2 4.4 45.9 -9 6668 No stop 05 16 00 --- 23 45 20 23.8 621.8 4.5 46.0 201 6722 05 12 31 05 16 40 J1905+0952 23 46 01 21.3 622.9 4.7 45.9 30 6722 05 16 40 05 18 30 =1903+097 23 47 51 20.9 623.2 4.7 45.9 110 6750 05 16 41 05 18 30 J1913+0932 23 47 51 22.1 621.5 4.6 45.7 -7 6750 No stop 05 21 00 --- 23 50 21 21.6 622.0 4.6 45.7 143 6789 05 18 31 05 21 00 J1905+0952 23 50 21 20.5 623.7 4.7 46.0 -7 6789 No stop 05 23 30 =1903+097 23 52 52 20.1 624.1 4.8 46.1 143 6827 05 21 01 05 23 30 J2253+1608 23 52 52 59.2 567.9 1.0 20.4 -83 6827 No stop 05 30 00 =3C454.3 23 59 23 58.6 570.8 1.1 22.3 307 6928 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: 10 Station: MEDICINA 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= 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 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 = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 4 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= 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 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: 4 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