COVER INFORMATION Station: ZELENCHK (Code Zc ) 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 ZELENCHK (Code Zc ) 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: 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 21 37 00 J1905+0952 18 04 45 53.5 513.7 -1.0 -18.9 0 0 21 37 00 21 39 30 =1903+097 18 07 16 53.7 514.7 -1.0 -18.2 150 38 21 37 01 21 39 30 GRS1915 18 07 16 54.0 510.4 -1.1 -21.3 -23 38 No stop 21 43 00 --- 18 10 46 54.3 511.7 -1.1 -20.4 187 92 21 39 31 21 43 40 J1905+0952 18 11 26 54.1 516.4 -0.9 -17.1 16 92 21 43 40 21 45 30 =1903+097 18 13 17 54.2 517.1 -0.9 -16.6 110 121 21 43 41 21 45 30 GRS1915 18 13 17 54.5 512.7 -1.0 -19.7 -23 121 No stop 21 49 00 --- 18 16 47 54.8 514.1 -1.0 -18.7 187 174 21 45 31 21 49 00 J1905+0952 18 16 47 54.4 518.5 -0.8 -15.5 -24 174 No stop 21 51 30 =1903+097 18 19 18 54.6 519.6 -0.8 -14.8 126 213 21 49 01 21 51 30 GRS1915 18 19 18 55.0 515.1 -0.9 -18.0 -24 213 No stop 21 55 00 --- 18 22 48 55.2 516.6 -0.9 -17.0 186 267 21 51 31 21 55 40 J1905+0952 18 23 28 54.8 521.3 -0.7 -13.6 16 267 21 55 40 21 57 30 =1903+097 18 25 19 54.9 522.1 -0.7 -13.0 110 295 21 55 41 21 57 30 GRS1915 18 25 19 55.4 517.6 -0.8 -16.3 -24 295 No stop 22 01 00 --- 18 28 49 55.6 519.1 -0.8 -15.2 186 349 21 57 31 22 01 00 J1905+0952 18 28 49 55.1 523.5 -0.6 -12.0 -24 349 No stop 22 03 30 =1903+097 18 31 20 55.3 524.6 -0.6 -11.2 126 387 22 01 01 22 03 30 GRS1915 18 31 20 55.8 520.1 -0.7 -14.5 -24 387 No stop 22 07 00 --- 18 34 50 56.0 521.6 -0.7 -13.4 186 441 22 03 31 22 07 40 J1905+0952 18 35 30 55.4 526.4 -0.5 -9.9 16 441 22 07 40 22 09 30 =1903+097 18 37 21 55.5 527.2 -0.5 -9.4 110 469 22 07 41 22 09 30 GRS1915 18 37 21 56.1 522.7 -0.6 -12.6 -24 469 No stop 22 13 00 --- 18 40 51 56.3 524.2 -0.6 -11.5 186 523 22 09 31 22 13 00 J1905+0952 18 40 51 55.7 528.7 -0.4 -8.3 -24 523 No stop 22 15 30 =1903+097 18 43 22 55.7 529.8 -0.4 -7.5 126 562 22 13 01 Schedule for ZELENCHK (Code Zc ) 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 15 30 GRS1915 18 43 22 56.4 525.3 -0.5 -10.7 -24 562 No stop 22 19 00 --- 18 46 52 56.6 526.8 -0.5 -9.6 186 615 22 15 31 22 19 40 J1905+0952 18 47 32 55.9 531.6 -0.3 -6.2 16 615 22 19 40 22 21 30 =1903+097 18 49 23 55.9 532.4 -0.3 -5.6 110 644 22 19 41 22 21 30 GRS1915 18 49 23 56.7 527.9 -0.4 -8.8 -24 644 No stop 22 25 00 --- 18 52 53 56.8 529.5 -0.4 -7.7 186 697 22 21 31 22 25 00 J1905+0952 18 52 53 56.0 533.9 -0.2 -4.5 -24 697 No stop 22 27 30 =1903+097 18 55 24 56.0 535.0 -0.2 -3.6 126 736 22 25 01 22 27 30 GRS1915 18 55 24 56.9 530.6 -0.3 -6.9 -23 736 No stop 22 31 00 --- 18 58 54 57.0 532.2 -0.3 -5.7 187 790 22 27 31 22 31 40 J1905+0952 18 59 34 56.1 536.9 -0.1 -2.3 16 790 22 31 40 22 33 30 =1903+097 19 01 25 56.1 537.7 -0.1 -1.7 110 818 22 31 41 22 33 30 J1913+0932 19 01 25 55.7 534.3 -0.2 -4.2 -21 818 No stop 22 37 00 --- 19 04 55 55.7 535.8 -0.2 -3.0 189 872 22 33 31 22 38 00 J1905+0952 19 05 55 56.1 539.7 -0.0 -0.2 38 872 22 38 00 22 40 30 =1903+097 19 08 26 56.1 540.8 0.0 0.6 150 910 22 38 01 22 40 30 GRS1915 19 08 26 57.2 536.5 -0.1 -2.6 -23 910 No stop 22 44 00 --- 19 11 56 57.2 538.1 -0.1 -1.4 187 964 22 40 31 22 44 00 J1905+0952 19 11 56 56.1 542.3 0.1 1.7 -24 964 No stop 22 46 30 =1903+097 19 14 27 56.1 543.4 0.1 2.5 126 1003 22 44 01 22 46 30 GRS1915 19 14 27 57.2 539.2 -0.0 -0.6 -23 1003 No stop 22 50 00 --- 19 17 57 57.2 540.8 0.0 0.6 187 1056 22 46 31 22 50 40 J1905+0952 19 18 37 56.0 545.3 0.2 3.9 16 1056 22 50 40 22 52 30 =1903+097 19 20 28 56.0 546.1 0.2 4.4 110 1085 22 50 41 22 52 30 GRS1915 19 20 28 57.2 541.9 0.1 1.4 -23 1085 No stop 22 56 00 --- 19 23 58 57.2 543.5 0.1 2.6 187 1138 22 52 31 22 56 00 J1905+0952 19 23 58 55.9 547.6 0.3 5.6 -23 1138 No stop 22 58 30 =1903+097 19 26 29 55.8 548.7 0.3 6.4 127 1177 22 56 01 22 58 30 GRS1915 19 26 29 57.1 544.6 0.2 3.4 -23 1177 No stop 23 02 00 --- 19 29 59 57.1 546.2 0.2 4.6 187 1231 22 58 31 Schedule for ZELENCHK (Code Zc ) 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 02 40 J1905+0952 19 30 39 55.7 550.5 0.4 7.7 17 1231 23 02 40 23 04 30 =1903+097 19 32 30 55.7 551.3 0.4 8.3 110 1259 23 02 41 23 04 30 GRS1915 19 32 30 57.0 547.4 0.3 5.4 -22 1259 No stop 23 08 00 --- 19 36 00 56.9 548.9 0.3 6.6 188 1313 23 04 31 23 08 00 J1905+0952 19 36 00 55.5 552.8 0.5 9.4 -23 1313 No stop 23 10 30 =1903+097 19 38 31 55.4 553.9 0.5 10.1 127 1351 23 08 01 23 10 30 GRS1915 19 38 31 56.8 550.0 0.4 7.4 -22 1351 No stop 23 14 00 --- 19 42 01 56.7 551.6 0.4 8.5 188 1405 23 10 31 23 14 40 J1905+0952 19 42 41 55.2 555.7 0.6 11.4 17 1405 23 14 40 23 16 30 =1903+097 19 44 32 55.1 556.5 0.6 12.0 110 1433 23 14 41 23 16 30 GRS1915 19 44 32 56.6 552.7 0.5 9.3 -22 1433 No stop 23 20 00 --- 19 48 02 56.5 554.2 0.5 10.4 188 1487 23 16 31 23 20 00 J1905+0952 19 48 02 54.9 557.9 0.7 13.0 -22 1487 No stop 23 22 30 =1903+097 19 50 33 54.8 559.0 0.7 13.8 128 1526 23 20 01 23 22 30 GRS1915 19 50 33 56.4 555.3 0.6 11.2 -22 1526 No stop 23 26 00 --- 19 54 03 56.2 556.9 0.6 12.3 188 1579 23 22 31 23 26 40 J1905+0952 19 54 43 54.5 560.7 0.8 15.0 18 1579 23 26 40 23 28 30 =1903+097 19 56 34 54.4 561.4 0.8 15.5 110 1608 23 26 41 23 28 30 GRS1915 19 56 34 56.1 557.9 0.7 13.1 -21 1608 No stop 23 32 00 --- 20 00 04 55.9 559.4 0.7 14.2 189 1662 23 28 31 23 32 00 J1905+0952 20 00 04 54.2 562.9 0.9 16.5 -22 1662 No stop 23 34 30 =1903+097 20 02 35 54.0 563.9 0.9 17.3 128 1700 23 32 01 23 34 30 J1913+0932 20 02 35 54.2 560.6 0.8 14.9 -21 1700 No stop 23 38 00 --- 20 06 05 54.0 562.0 0.9 15.9 189 1754 23 34 31 23 39 00 J1905+0952 20 07 05 53.7 565.7 1.0 18.5 39 1754 23 39 00 23 41 30 =1903+097 20 09 36 53.5 566.7 1.0 19.2 150 1792 23 39 01 23 41 30 GRS1915 20 09 36 55.2 563.4 0.9 17.0 -21 1792 No stop 23 45 00 --- 20 13 06 55.0 564.8 0.9 18.0 189 1846 23 41 31 23 45 00 J1905+0952 20 13 06 53.2 568.0 1.1 20.1 -21 1846 No stop 23 47 30 =1903+097 20 15 37 53.0 569.0 1.1 20.8 129 1885 23 45 01 Schedule for ZELENCHK (Code Zc ) 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 47 30 GRS1915 20 15 37 54.8 565.9 1.0 18.7 -21 1885 No stop 23 51 00 --- 20 19 07 54.5 567.3 1.0 19.7 189 1938 23 47 31 23 51 40 J1905+0952 20 19 48 52.6 570.6 1.2 21.9 19 1938 23 51 40 23 53 30 =1903+097 20 21 38 52.4 571.2 1.2 22.3 110 1967 23 51 41 23 53 30 GRS1915 20 21 38 54.3 568.3 1.1 20.4 -20 1967 No stop 23 57 00 --- 20 25 08 54.0 569.6 1.1 21.3 190 2021 23 53 31 23 57 00 J1905+0952 20 25 08 52.1 572.6 1.3 23.2 -21 2021 No stop 23 59 30 =1903+097 20 27 39 51.8 573.5 1.3 23.8 129 2059 23 57 01 --- Start: Wed 16 Jun 2021 Day 167 -- Stop: Thu 17 Jun 2021 Day 168 --- 23 59 30 GRS1915 20 27 39 53.7 570.6 1.2 22.0 -20 2059 No stop 00 03 00 --- 20 31 09 53.4 571.9 1.2 22.9 190 2113 23 59 31 00 03 40 J1905+0952 20 31 49 51.4 575.0 1.4 24.8 20 2113 00 03 40 00 05 30 =1903+097 20 33 40 51.2 575.6 1.4 25.3 110 2141 00 03 41 00 05 30 GRS1915 20 33 40 53.2 572.9 1.3 23.5 -20 2141 No stop 00 09 00 --- 20 37 10 52.8 574.2 1.3 24.4 190 2195 00 05 31 00 09 00 J1905+0952 20 37 10 50.8 576.9 1.5 26.1 -20 2195 No stop 00 11 30 =1903+097 20 39 41 50.6 577.7 1.5 26.7 130 2233 00 09 01 00 11 30 GRS1915 20 39 41 52.6 575.1 1.4 25.0 -19 2233 No stop 00 15 00 --- 20 43 11 52.2 576.4 1.4 25.9 191 2287 00 11 31 00 15 40 J1905+0952 20 43 51 50.1 579.2 1.6 27.6 20 2287 00 15 40 00 17 30 =1903+097 20 45 42 49.9 579.8 1.7 28.0 110 2315 00 15 41 00 17 30 GRS1915 20 45 42 51.9 577.3 1.5 26.5 -19 2315 No stop 00 21 00 --- 20 49 12 51.5 578.5 1.5 27.3 191 2369 00 17 31 00 21 00 J1905+0952 20 49 12 49.5 581.0 1.7 28.7 -19 2369 No stop 00 23 30 =1903+097 20 51 43 49.2 581.8 1.8 29.2 131 2408 00 21 01 00 23 30 GRS1915 20 51 43 51.2 579.4 1.6 27.8 -19 2408 No stop 00 27 00 --- 20 55 13 50.8 580.6 1.7 28.6 191 2462 00 23 31 00 27 40 J1905+0952 20 55 53 48.7 583.2 1.8 30.1 21 2462 00 27 40 00 29 30 =1903+097 20 57 44 48.4 583.8 1.9 30.5 110 2490 00 27 41 Schedule for ZELENCHK (Code Zc ) 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 29 30 GRS1915 20 57 44 50.5 581.5 1.7 29.1 -18 2490 No stop 00 33 00 --- 21 01 14 50.1 582.6 1.8 29.9 192 2544 00 29 31 00 33 00 J1905+0952 21 01 14 48.0 584.9 1.9 31.1 -19 2544 No stop 00 35 30 =1903+097 21 03 45 47.7 585.7 2.0 31.6 131 2582 00 33 01 00 35 30 J1913+0932 21 03 45 48.4 583.0 1.8 29.9 -19 2582 No stop 00 39 00 --- 21 07 15 47.9 584.1 1.9 30.6 191 2636 00 35 31 00 40 00 J1905+0952 21 08 15 47.1 587.1 2.0 32.4 40 2636 00 40 00 00 42 30 =1903+097 21 10 46 46.8 587.8 2.1 32.9 150 2674 00 40 01 00 42 30 GRS1915 21 10 46 48.9 585.7 1.9 31.8 -18 2674 No stop 00 46 00 --- 21 14 16 48.5 586.8 2.0 32.4 192 2728 00 42 31 00 46 00 J1905+0952 21 14 16 46.3 588.9 2.1 33.5 -18 2728 No stop 00 48 30 =1903+097 21 16 47 45.9 589.6 2.2 33.9 132 2767 00 46 01 00 48 30 GRS1915 21 16 47 48.1 587.6 2.0 32.9 -18 2767 No stop 00 52 00 --- 21 20 17 47.7 588.7 2.1 33.5 192 2821 00 48 31 00 52 40 J1905+0952 21 20 58 45.4 590.8 2.2 34.6 22 2821 00 52 40 00 54 30 =1903+097 21 22 48 45.1 591.4 2.3 34.9 110 2849 00 52 41 00 54 30 GRS1915 21 22 48 47.3 589.4 2.1 34.0 -18 2849 No stop 00 58 00 --- 21 26 18 46.8 590.5 2.2 34.6 192 2903 00 54 31 00 58 00 J1905+0952 21 26 18 44.6 592.3 2.3 35.5 -18 2903 No stop 01 00 30 =1903+097 21 28 49 44.2 593.0 2.4 35.8 132 2941 00 58 01 01 00 30 GRS1915 21 28 49 46.5 591.2 2.2 35.0 -18 2941 No stop 01 04 00 --- 21 32 19 46.0 592.2 2.3 35.5 192 2995 01 00 31 01 04 40 J1905+0952 21 33 00 43.6 594.2 2.4 36.5 21 2995 01 04 40 01 06 30 =1903+097 21 34 50 43.4 594.7 2.5 36.7 110 3023 01 04 41 01 06 30 GRS1915 21 34 50 45.6 593.0 2.3 35.9 -18 3023 No stop 01 10 00 --- 21 38 20 45.1 593.9 2.4 36.5 192 3077 01 06 31 01 10 00 J1905+0952 21 38 20 42.8 595.7 2.5 37.2 -19 3077 No stop 01 12 30 =1903+097 21 40 51 42.5 596.3 2.6 37.6 131 3115 01 10 01 01 12 30 GRS1915 21 40 51 44.7 594.6 2.4 36.9 -18 3115 No stop 01 16 00 --- 21 44 21 44.2 595.6 2.5 37.4 192 3169 01 12 31 Schedule for ZELENCHK (Code Zc ) 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 16 40 J1905+0952 21 45 01 41.8 597.4 2.6 38.1 21 3169 01 16 40 01 18 30 =1903+097 21 46 52 41.6 597.9 2.7 38.4 110 3197 01 16 41 01 18 30 GRS1915 21 46 52 43.9 596.3 2.5 37.7 -18 3197 No stop 01 22 00 --- 21 50 22 43.3 597.2 2.6 38.2 192 3251 01 18 31 01 22 00 J1905+0952 21 50 22 41.0 598.8 2.7 38.8 -19 3251 No stop 01 24 30 =1903+097 21 52 53 40.6 599.4 2.8 39.1 131 3290 01 22 01 01 24 30 GRS1915 21 52 53 42.9 597.9 2.6 38.5 -18 3290 No stop 01 28 00 --- 21 56 23 42.4 598.8 2.7 39.0 192 3344 01 24 31 01 28 40 J1905+0952 21 57 03 40.0 600.5 2.8 39.6 21 3344 01 28 40 01 30 30 =1903+097 21 58 54 39.7 600.9 2.9 39.8 110 3372 01 28 41 01 30 30 GRS1915 21 58 54 42.0 599.4 2.7 39.3 -19 3372 No stop 01 34 00 --- 22 02 24 41.5 600.3 2.8 39.7 191 3426 01 30 31 01 34 40 J1905+0952 22 03 04 39.0 601.9 2.9 40.3 21 3426 01 34 40 01 36 30 =1903+097 22 04 55 38.7 602.4 3.0 40.5 110 3454 01 34 41 01 36 30 J1913+0932 22 04 55 39.7 600.2 2.8 39.5 -18 3454 No stop 01 39 00 --- 22 07 25 39.3 600.8 2.9 39.7 132 3492 01 36 31 01 39 00 J1905+0952 22 07 25 38.3 603.0 3.0 40.8 -18 3492 No stop 01 41 30 =1903+097 22 09 56 37.9 603.6 3.1 41.0 132 3531 01 39 01 01 42 00 J1800+3848 22 10 26 44.0 646.3 4.2 62.8 -38 3531 01 42 00 01 47 00 =1758+388 22 15 26 43.2 646.9 4.2 62.4 262 3608 01 42 01 01 49 00 J1905+0952 22 17 27 36.7 605.3 3.2 41.8 53 3608 01 49 00 01 51 30 =1903+097 22 19 57 36.3 605.9 3.2 42.0 150 3646 01 49 01 01 51 30 GRS1915 22 19 57 38.7 604.6 3.1 41.6 -19 3646 No stop 01 55 00 --- 22 23 28 38.1 605.4 3.1 42.0 191 3700 01 51 31 01 55 00 J1905+0952 22 23 28 35.7 606.7 3.3 42.3 -19 3700 No stop 01 57 30 =1903+097 22 25 58 35.3 607.2 3.3 42.5 131 3738 01 55 01 01 57 30 GRS1915 22 25 58 37.7 606.0 3.2 42.2 -19 3738 No stop 02 01 00 --- 22 29 29 37.1 606.8 3.2 42.5 191 3792 01 57 31 02 01 40 J1905+0952 22 30 09 34.6 608.2 3.4 42.9 21 3792 02 01 40 02 03 30 =1903+097 22 31 59 34.3 608.6 3.4 43.0 110 3821 02 01 41 Schedule for ZELENCHK (Code Zc ) 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 03 30 GRS1915 22 31 59 36.7 607.4 3.3 42.7 -19 3821 No stop 02 07 00 --- 22 35 30 36.1 608.2 3.3 43.0 191 3874 02 03 31 02 07 00 J1905+0952 22 35 30 33.7 609.3 3.5 43.3 -19 3874 No stop 02 09 30 =1903+097 22 38 00 33.3 609.9 3.5 43.5 131 3913 02 07 01 02 09 30 GRS1915 22 38 00 35.7 608.7 3.4 43.2 -19 3913 No stop 02 13 00 --- 22 41 31 35.1 609.5 3.4 43.5 191 3967 02 09 31 02 13 40 J1905+0952 22 42 11 32.6 610.8 3.6 43.8 21 3967 02 13 40 02 15 30 =1903+097 22 44 01 32.3 611.1 3.6 43.9 110 3995 02 13 41 02 15 30 GRS1915 22 44 01 34.7 610.0 3.5 43.7 -19 3995 No stop 02 19 00 --- 22 47 32 34.1 610.8 3.5 44.0 191 4049 02 15 31 02 19 00 J1905+0952 22 47 32 31.7 611.9 3.7 44.1 -19 4049 No stop 02 21 30 =1903+097 22 50 02 31.2 612.4 3.7 44.3 131 4087 02 19 01 02 21 30 GRS1915 22 50 02 33.6 611.3 3.6 44.2 -19 4087 No stop 02 25 00 --- 22 53 33 33.0 612.0 3.6 44.4 191 4141 02 21 31 02 25 40 J1905+0952 22 54 13 30.5 613.2 3.8 44.6 21 4141 02 25 40 02 27 30 =1903+097 22 56 03 30.2 613.6 3.8 44.7 110 4169 02 25 41 02 27 30 GRS1915 22 56 03 32.6 612.6 3.7 44.6 -19 4169 No stop 02 31 00 --- 22 59 34 32.0 613.3 3.7 44.8 191 4223 02 27 31 02 31 00 J1905+0952 22 59 34 29.6 614.3 3.9 44.9 -19 4223 No stop 02 33 30 =1903+097 23 02 04 29.1 614.8 3.9 45.0 131 4262 02 31 01 02 33 30 GRS1915 23 02 04 31.6 613.8 3.8 44.9 -19 4262 No stop 02 37 00 --- 23 05 35 30.9 614.5 3.8 45.1 191 4315 02 33 31 02 37 40 J1905+0952 23 06 15 28.4 615.7 4.0 45.2 21 4315 02 37 40 02 39 30 =1903+097 23 08 05 28.1 616.0 4.0 45.3 110 4344 02 37 41 02 39 30 GRS1915 23 08 05 30.5 615.0 3.9 45.3 -19 4344 No stop 02 43 00 --- 23 11 36 29.9 615.7 3.9 45.4 191 4397 02 39 31 02 43 00 J1905+0952 23 11 36 27.5 616.7 4.1 45.5 -19 4397 No stop 02 45 30 =1903+097 23 14 06 27.0 617.2 4.1 45.6 131 4436 02 43 01 02 45 30 J1913+0932 23 14 06 28.2 615.4 4.0 45.1 -17 4436 No stop 02 49 00 --- 23 17 37 27.5 616.1 4.1 45.3 193 4490 02 45 31 Schedule for ZELENCHK (Code Zc ) 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 50 00 J1905+0952 23 18 37 26.2 618.1 4.2 45.8 43 4490 02 50 00 02 52 30 =1903+097 23 21 07 25.8 618.5 4.2 45.9 150 4528 02 50 01 02 52 30 GRS1915 23 21 07 28.2 617.6 4.1 45.9 -19 4528 No stop 02 56 00 --- 23 24 38 27.6 618.3 4.1 46.1 191 4582 02 52 31 02 56 00 J1905+0952 23 24 38 25.2 619.2 4.3 46.0 -19 4582 No stop 02 58 30 =1903+097 23 27 08 24.7 619.7 4.3 46.1 131 4621 02 56 01 02 58 30 GRS1915 23 27 08 27.2 618.7 4.2 46.2 -19 4621 No stop 03 02 00 --- 23 30 39 26.5 619.4 4.2 46.3 191 4674 02 58 31 03 02 40 J1905+0952 23 31 19 24.0 620.5 4.4 46.3 21 4674 03 02 40 03 04 30 =1903+097 23 33 09 23.7 620.8 4.4 46.3 110 4703 03 02 41 03 04 30 GRS1915 23 33 09 26.1 619.9 4.3 46.4 -19 4703 No stop 03 08 00 --- 23 36 40 25.5 620.5 4.3 46.5 191 4756 03 04 31 03 08 00 J1905+0952 23 36 40 23.0 621.5 4.5 46.4 -19 4756 No stop 03 10 30 =1903+097 23 39 10 22.6 621.9 4.5 46.5 131 4795 03 08 01 03 10 30 GRS1915 23 39 10 25.0 621.0 4.4 46.6 -19 4795 No stop 03 14 00 --- 23 42 41 24.4 621.7 4.4 46.7 191 4849 03 10 31 03 14 40 J1905+0952 23 43 21 21.8 622.7 4.6 46.6 21 4849 03 14 40 03 16 30 =1903+097 23 45 11 21.5 623.0 4.6 46.7 110 4877 03 14 41 03 16 30 GRS1915 23 45 11 24.0 622.1 4.5 46.8 -19 4877 No stop 03 20 00 --- 23 48 42 23.3 622.8 4.5 46.8 191 4931 03 16 31 03 20 00 J1905+0952 23 48 42 20.9 623.6 4.7 46.7 -19 4931 No stop 03 22 30 =1903+097 23 51 12 20.4 624.1 4.7 46.8 131 4969 03 20 01 03 22 30 GRS1915 23 51 12 22.9 623.2 4.6 46.9 -19 4969 No stop 03 26 00 --- 23 54 43 22.2 623.9 4.6 47.0 191 5023 03 22 31 03 26 40 J1905+0952 23 55 23 19.7 624.8 4.8 46.9 21 5023 03 26 40 03 28 30 =1903+097 23 57 13 19.3 625.2 4.8 46.9 110 5051 03 26 41 03 28 30 GRS1915 23 57 13 21.8 624.3 4.7 47.0 -19 5051 No stop 03 32 00 --- 00 00 44 21.2 624.9 4.7 47.1 191 5105 03 28 31 03 32 00 J1905+0952 00 00 44 18.7 625.8 4.9 47.0 -19 5105 No stop 03 34 30 =1903+097 00 03 14 18.3 626.2 4.9 47.0 131 5144 03 32 01 Schedule for ZELENCHK (Code Zc ) 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 34 30 GRS1915 00 03 14 20.7 625.4 4.8 47.1 -19 5144 No stop 03 38 00 --- 00 06 45 20.1 626.0 4.8 47.2 191 5197 03 34 31 03 38 40 J1905+0952 00 07 25 17.5 627.0 5.0 47.0 21 5197 03 38 40 03 40 30 =1903+097 00 09 15 17.2 627.3 5.0 47.1 110 5226 03 38 41 03 40 30 GRS1915 00 09 15 19.6 626.5 4.9 47.2 -19 5226 No stop 03 44 00 --- 00 12 46 19.0 627.1 4.9 47.3 191 5279 03 40 31 03 44 00 J1905+0952 00 12 46 16.5 627.9 5.1 47.1 -19 5279 No stop 03 46 30 =1903+097 00 15 16 16.1 628.4 5.1 47.1 131 5318 03 44 01 03 46 30 J1913+0932 00 15 16 17.3 626.8 5.0 47.0 -16 5318 No stop 03 50 00 --- 00 18 47 16.6 627.4 5.1 47.0 194 5372 03 46 31 03 51 00 J1905+0952 00 19 47 15.3 629.1 5.2 47.1 44 5372 03 51 00 03 53 30 =1903+097 00 22 17 14.8 629.6 5.3 47.1 150 5410 03 51 01 03 53 30 GRS1915 00 22 17 17.3 628.8 5.1 47.3 -19 5410 No stop 03 57 00 --- 00 25 48 16.6 629.4 5.2 47.3 191 5464 03 53 31 03 57 00 J1905+0952 00 25 48 14.2 630.2 5.3 47.1 -19 5464 No stop 03 59 30 =1903+097 00 28 18 13.7 630.6 5.4 47.1 131 5503 03 57 01 03 59 30 GRS1915 00 28 18 16.2 629.8 5.2 47.3 -19 5503 No stop 04 03 00 --- 00 31 49 15.6 630.4 5.3 47.3 191 5556 03 59 31 04 03 40 J1905+0952 00 32 29 13.0 631.3 5.4 47.1 21 5556 04 03 40 04 05 30 =1903+097 00 34 19 12.7 631.7 5.5 47.1 110 5585 04 03 41 04 05 30 GRS1915 00 34 19 15.1 630.8 5.3 47.3 -19 5585 No stop 04 09 00 --- 00 37 50 14.5 631.4 5.4 47.3 191 5638 04 05 31 04 09 00 J1905+0952 00 37 50 12.0 632.3 5.5 47.1 -19 5638 No stop 04 11 30 =1903+097 00 40 20 11.6 632.7 5.6 47.1 131 5677 04 09 01 04 11 30 GRS1915 00 40 20 14.0 631.9 5.4 47.3 -19 5677 No stop 04 15 00 --- 00 43 51 13.4 632.5 5.5 47.3 191 5731 04 11 31 04 15 40 J1905+0952 00 44 31 10.8 633.4 5.6 47.0 21 5731 04 15 40 04 17 30 =1903+097 00 46 21 10.5 633.7 5.7 47.0 110 5759 04 15 41 04 17 30 GRS1915 00 46 21 12.9 632.9 5.5 47.3 -19 5759 No stop 04 21 00 --- 00 49 52 12.3 633.5 5.6 47.2 191 5813 04 17 31 Schedule for ZELENCHK (Code Zc ) 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 23 30 GRS1915 00 52 22 11.9 633.9 5.6 47.2 144 5813 04 23 30 04 27 00 --- 00 55 53 11.2 634.5 5.7 47.1 210 5867 04 23 31 04 29 30 GRS1915 00 58 23 10.8 634.9 5.7 47.1 144 5867 04 29 30 04 33 00 --- 01 01 54 10.1 635.5 5.8 47.0 210 5921 04 29 31 05 23 30 J2253+1608 01 52 32 43.6 607.9 3.0 44.2 2933 5921 05 23 30 05 30 00 =3C454.3 01 59 03 42.5 609.4 3.1 44.8 390 6021 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 Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: kvzr_c Added by Des Small, 24 February 2012 Setup group: 2 Station: ZELENCHK 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: 12 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: 12 13 20 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 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