COVER INFORMATION Station: URUMQI (Code Ur ) Experiment: 3.6cm global VLBI observations of the starburst galaxy Arp 220 Exp. Code: gv028b Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Eskil Varenius Address: Chalmers University of Technology Onsala Space Observatory 439 92 Onsala Sweden Phone: +46706755341 EMAIL: eskil.varenius@chalmers.se Fax: Phone during observation: +46706755341 Observing mode: vlbi Notes: VLA exclude outer 3 stations for each arm. Phase calibrator: J1532+2344 Fringe finder: J1516+1932 Pol. cal.: OQ208 COVER LETTER: This is one of three .key files to observe Arp 220 at 18cm, 6cm and 3.6cm during EVN session I 2023. Arp 220 has two nuclei 1 arcsec apart; we aim to point right in the middle of them, to get both at the same time. OPERATOR NOTES: VLA27: Please exclude outer 3 stations on each arm, to get C-array synthesized beam size. EF: Gaps for pointing at: from end of scan 107 at 03:54:29 to beginning of scan 111 at 04:02:12 from end of scan 236 at 08:04:05 to beginning of scan 243 at 08:13:31 Schedule for URUMQI (Code Ur ) Page 2 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 1 Mar 2023 Day 60 --- Next scan frequencies: 8272.00 8272.00 8272.00 8272.00 8336.00 8336.00 8336.00 8336.00 8400.00 8400.00 8400.00 8400.00 8464.00 8464.00 8464.00 8464.00 Next BBC frequencies: 172.00 172.00 172.00 172.00 236.00 236.00 236.00 236.00 300.00 300.00 300.00 300.00 364.00 364.00 364.00 364.00 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 23 30 00 J1516+1932 15 56 45 64.6 201.7 0.6 16.6 0 0 23 30 00 23 35 00 =1514+197 16 01 46 64.3 204.4 0.7 18.5 300 77 23 30 01 23 36 41 OQ208 16 03 27 62.4 246.4 1.9 49.1 55 77 23 36 41 23 41 41 --- 16 08 28 61.5 247.9 2.0 49.8 300 154 23 36 42 23 43 17 J1532+2344 16 10 04 68.8 203.6 0.6 18.5 48 154 23 43 17 23 44 17 =1530+239 16 11 05 68.7 204.2 0.6 18.9 60 169 23 43 18 23 44 44 ARP220 16 11 31 68.7 202.9 0.6 17.9 21 169 23 44 44 23 47 14 --- 16 14 01 68.5 204.4 0.6 19.1 150 208 23 44 45 23 47 41 J1532+2344 16 14 28 68.5 206.2 0.7 20.5 21 208 23 47 41 23 48 41 =1530+239 16 15 29 68.4 206.8 0.7 20.9 60 223 23 47 42 23 49 07 ARP220 16 15 55 68.3 205.5 0.7 19.9 21 223 23 49 07 23 51 37 --- 16 18 26 68.1 207.0 0.7 21.0 150 262 23 49 08 23 52 04 J1532+2344 16 18 53 68.1 208.7 0.8 22.4 21 262 23 52 04 23 53 04 =1530+239 16 19 53 68.0 209.3 0.8 22.8 60 277 23 52 05 23 53 30 ARP220 16 20 19 68.0 208.1 0.7 21.8 21 277 23 53 30 23 56 00 --- 16 22 50 67.7 209.5 0.8 22.9 150 315 23 53 31 23 56 27 J1532+2344 16 23 17 67.7 211.2 0.8 24.2 22 315 23 56 27 23 57 27 =1530+239 16 24 17 67.6 211.7 0.8 24.6 60 331 23 56 28 --- Start: Wed 1 Mar 2023 Day 60 -- Stop: Thu 2 Mar 2023 Day 61 --- 23 57 54 ARP220 16 24 43 67.6 210.5 0.8 23.7 21 331 23 57 54 00 00 24 --- 16 27 14 67.3 211.9 0.9 24.7 150 369 23 57 55 00 00 51 J1532+2344 16 27 41 67.3 213.6 0.9 26.0 22 369 00 00 51 00 01 51 =1530+239 16 28 41 67.2 214.1 0.9 26.4 60 385 00 00 52 00 02 17 ARP220 16 29 07 67.2 212.9 0.9 25.4 21 385 00 02 17 00 04 47 --- 16 31 38 66.9 214.2 0.9 26.4 150 423 00 02 18 Schedule for URUMQI (Code Ur ) Page 3 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 00 05 14 J1532+2344 16 32 05 66.8 215.9 1.0 27.7 22 423 00 05 14 00 06 14 =1530+239 16 33 05 66.7 216.4 1.0 28.0 60 438 00 05 15 00 06 40 ARP220 16 33 31 66.7 215.2 1.0 27.1 21 438 00 06 40 00 09 10 --- 16 36 02 66.4 216.5 1.0 28.1 150 477 00 06 41 00 09 37 J1532+2344 16 36 29 66.4 218.1 1.0 29.3 22 477 00 09 37 00 10 37 =1530+239 16 37 29 66.2 218.6 1.1 29.6 60 492 00 09 38 00 11 04 ARP220 16 37 55 66.2 217.5 1.0 28.7 21 492 00 11 04 00 13 34 --- 16 40 26 66.0 218.7 1.1 29.6 150 531 00 11 05 00 14 01 J1532+2344 16 40 53 65.9 220.3 1.1 30.8 22 531 00 14 01 00 15 01 =1530+239 16 41 53 65.7 220.7 1.1 31.1 60 546 00 14 02 00 15 27 ARP220 16 42 19 65.7 219.6 1.1 30.3 21 546 00 15 27 00 17 57 --- 16 44 50 65.4 220.8 1.1 31.1 150 585 00 15 28 00 18 24 J1532+2344 16 45 17 65.3 222.3 1.2 32.2 22 585 00 18 24 00 19 24 =1530+239 16 46 17 65.2 222.8 1.2 32.6 60 600 00 18 25 00 19 50 ARP220 16 46 44 65.2 221.7 1.2 31.7 21 600 00 19 50 00 22 20 --- 16 49 14 64.9 222.9 1.2 32.5 150 638 00 19 51 00 22 47 J1532+2344 16 49 41 64.8 224.3 1.3 33.6 22 638 00 22 47 00 23 47 =1530+239 16 50 41 64.6 224.8 1.3 33.9 60 654 00 22 48 00 24 14 ARP220 16 51 08 64.7 223.7 1.3 33.1 21 654 00 24 14 00 26 44 --- 16 53 38 64.4 224.8 1.3 33.9 150 692 00 24 15 00 27 11 J1532+2344 16 54 05 64.2 226.3 1.3 34.9 22 692 00 27 11 00 28 11 =1530+239 16 55 05 64.1 226.7 1.4 35.2 60 708 00 27 12 00 28 37 ARP220 16 55 32 64.1 225.7 1.3 34.4 21 708 00 28 37 00 31 07 --- 16 58 02 63.8 226.7 1.4 35.2 150 746 00 28 38 00 31 34 J1532+2344 16 58 29 63.6 228.1 1.4 36.2 22 746 00 31 34 00 32 34 =1530+239 16 59 29 63.5 228.6 1.4 36.4 60 762 00 31 35 00 33 00 ARP220 16 59 56 63.5 227.5 1.4 35.7 21 762 00 33 00 00 35 30 --- 17 02 26 63.2 228.6 1.4 36.4 150 800 00 33 01 00 35 57 J1532+2344 17 02 53 63.0 229.9 1.5 37.3 22 800 00 35 57 00 36 57 =1530+239 17 03 53 62.9 230.3 1.5 37.6 60 815 00 35 58 Schedule for URUMQI (Code Ur ) Page 4 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 00 38 34 OQ208 17 05 30 51.6 261.8 3.0 54.7 61 815 00 38 34 00 43 34 --- 17 10 31 50.7 262.8 3.0 54.9 300 892 00 38 35 00 45 08 J1532+2344 17 12 06 61.7 233.5 1.6 39.6 61 892 00 45 08 00 46 08 =1530+239 17 13 06 61.6 233.9 1.7 39.8 60 908 00 45 09 00 46 35 ARP220 17 13 32 61.6 232.9 1.6 39.1 21 908 00 46 35 00 49 05 --- 17 16 03 61.3 233.8 1.7 39.7 150 946 00 46 36 00 49 32 J1532+2344 17 16 30 61.1 235.1 1.7 40.5 22 946 00 49 32 00 50 32 =1530+239 17 17 30 60.9 235.5 1.7 40.7 60 962 00 49 33 00 50 58 ARP220 17 17 56 61.0 234.5 1.7 40.1 21 962 00 50 58 00 53 28 --- 17 20 27 60.6 235.4 1.7 40.6 150 1000 00 50 59 00 53 55 J1532+2344 17 20 54 60.4 236.7 1.8 41.4 22 1000 00 53 55 00 54 55 =1530+239 17 21 54 60.2 237.0 1.8 41.6 60 1015 00 53 56 00 55 21 ARP220 17 22 20 60.3 236.1 1.8 41.0 21 1015 00 55 21 00 57 51 --- 17 24 51 60.0 237.0 1.8 41.5 150 1054 00 55 22 00 58 18 J1532+2344 17 25 18 59.7 238.2 1.9 42.3 22 1054 00 58 18 00 59 18 =1530+239 17 26 18 59.6 238.5 1.9 42.5 60 1069 00 58 19 00 59 44 ARP220 17 26 44 59.7 237.6 1.8 41.9 21 1069 00 59 44 01 02 14 --- 17 29 15 59.3 238.5 1.9 42.4 150 1108 00 59 45 01 02 41 J1532+2344 17 29 42 59.0 239.6 1.9 43.1 22 1108 01 02 41 01 03 41 =1530+239 17 30 42 58.9 239.9 1.9 43.3 60 1123 01 02 42 01 04 08 ARP220 17 31 08 59.0 239.1 1.9 42.7 21 1123 01 04 08 01 06 38 --- 17 33 39 58.6 239.9 2.0 43.2 150 1162 01 04 09 01 07 04 J1532+2344 17 34 05 58.3 241.0 2.0 43.9 22 1162 01 07 04 01 08 04 =1530+239 17 35 06 58.2 241.3 2.0 44.0 60 1177 01 07 05 01 08 31 ARP220 17 35 32 58.3 240.5 2.0 43.5 22 1177 01 08 31 01 11 01 --- 17 38 02 57.9 241.3 2.0 43.9 150 1215 01 08 32 01 11 28 J1532+2344 17 38 29 57.6 242.4 2.1 44.6 22 1215 01 11 28 01 12 28 =1530+239 17 39 30 57.5 242.7 2.1 44.7 60 1231 01 11 29 01 12 54 ARP220 17 39 56 57.6 241.9 2.1 44.2 22 1231 01 12 54 01 15 24 --- 17 42 26 57.2 242.6 2.1 44.6 150 1269 01 12 55 Schedule for URUMQI (Code Ur ) Page 5 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 01 15 51 J1532+2344 17 42 53 56.9 243.7 2.2 45.3 22 1269 01 15 51 01 16 51 =1530+239 17 43 53 56.8 244.0 2.2 45.4 60 1285 01 15 52 01 17 17 ARP220 17 44 20 56.9 243.2 2.1 44.9 22 1285 01 17 17 01 19 47 --- 17 46 50 56.5 243.9 2.2 45.3 150 1323 01 17 18 01 20 14 J1532+2344 17 47 17 56.2 245.0 2.2 45.9 22 1323 01 20 14 01 21 14 =1530+239 17 48 17 56.1 245.3 2.2 46.0 60 1338 01 20 15 01 21 40 ARP220 17 48 44 56.2 244.5 2.2 45.5 22 1338 01 21 40 01 24 10 --- 17 51 14 55.8 245.2 2.3 45.9 150 1377 01 21 41 01 24 37 J1532+2344 17 51 41 55.5 246.2 2.3 46.5 22 1377 01 24 37 01 25 37 =1530+239 17 52 41 55.3 246.5 2.3 46.6 60 1392 01 24 38 01 26 03 ARP220 17 53 07 55.5 245.7 2.3 46.1 22 1392 01 26 03 01 28 33 --- 17 55 38 55.0 246.4 2.3 46.5 150 1431 01 26 04 01 29 00 J1532+2344 17 56 05 54.8 247.4 2.4 47.0 22 1431 01 29 00 01 30 00 =1530+239 17 57 05 54.6 247.7 2.4 47.1 60 1446 01 29 01 01 30 26 ARP220 17 57 31 54.7 246.9 2.4 46.7 22 1446 01 30 26 01 32 56 --- 18 00 02 54.3 247.6 2.4 47.0 150 1485 01 30 27 01 33 23 J1532+2344 18 00 29 54.0 248.6 2.4 47.5 22 1485 01 33 23 01 34 23 =1530+239 18 01 29 53.8 248.9 2.5 47.6 60 1500 01 33 24 01 34 49 ARP220 18 01 55 54.0 248.1 2.4 47.2 22 1500 01 34 49 01 37 19 --- 18 04 25 53.6 248.8 2.5 47.5 150 1538 01 34 50 01 37 46 J1532+2344 18 04 52 53.3 249.8 2.5 48.0 22 1538 01 37 46 01 38 46 =1530+239 18 05 52 53.1 250.0 2.5 48.1 60 1554 01 37 47 01 40 22 OQ208 18 07 29 40.3 273.0 4.0 55.4 68 1554 01 40 22 01 45 22 --- 18 12 30 39.4 273.9 4.1 55.4 300 1631 01 40 23 01 46 59 J1532+2344 18 14 07 51.7 252.1 2.7 48.9 69 1631 01 46 59 01 47 59 =1530+239 18 15 07 51.5 252.3 2.7 49.0 60 1646 01 47 00 01 48 25 ARP220 18 15 33 51.7 251.6 2.7 48.6 22 1646 01 48 25 01 50 55 --- 18 18 04 51.2 252.2 2.7 48.9 150 1685 01 48 26 01 51 22 J1532+2344 18 18 30 50.9 253.1 2.7 49.3 22 1685 01 51 22 01 52 22 =1530+239 18 19 30 50.8 253.3 2.8 49.4 60 1700 01 51 23 Schedule for URUMQI (Code Ur ) Page 6 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 01 52 48 ARP220 18 19 57 50.9 252.7 2.7 49.0 22 1700 01 52 48 01 55 18 --- 18 22 27 50.5 253.2 2.8 49.2 150 1738 01 52 49 01 55 45 J1532+2344 18 22 54 50.2 254.1 2.8 49.6 22 1738 01 55 45 01 56 45 =1530+239 18 23 54 50.0 254.4 2.8 49.7 60 1754 01 55 46 01 57 11 ARP220 18 24 20 50.1 253.7 2.8 49.4 22 1754 01 57 11 01 59 41 --- 18 26 51 49.7 254.3 2.8 49.6 150 1792 01 57 12 02 00 08 J1532+2344 18 27 17 49.4 255.1 2.9 50.0 22 1792 02 00 08 02 01 08 =1530+239 18 28 18 49.2 255.4 2.9 50.0 60 1808 02 00 09 02 01 34 ARP220 18 28 44 49.4 254.7 2.9 49.7 22 1808 02 01 34 02 04 04 --- 18 31 14 48.9 255.3 2.9 49.9 150 1846 02 01 35 02 04 30 J1532+2344 18 31 41 48.6 256.1 3.0 50.3 22 1846 02 04 30 02 05 30 =1530+239 18 32 41 48.4 256.3 3.0 50.3 60 1862 02 04 31 02 05 57 ARP220 18 33 07 48.6 255.7 3.0 50.0 22 1862 02 05 57 02 08 27 --- 18 35 38 48.2 256.2 3.0 50.2 150 1900 02 05 58 02 08 53 J1532+2344 18 36 04 47.8 257.1 3.0 50.6 22 1900 02 08 53 02 09 53 =1530+239 18 37 04 47.7 257.3 3.1 50.6 60 1915 02 08 54 02 10 19 ARP220 18 37 31 47.8 256.7 3.0 50.3 22 1915 02 10 19 02 12 49 --- 18 40 01 47.4 257.2 3.1 50.5 150 1954 02 10 20 02 13 16 J1532+2344 18 40 28 47.1 258.0 3.1 50.8 22 1954 02 13 16 02 14 16 =1530+239 18 41 28 46.9 258.2 3.1 50.9 60 1969 02 13 17 02 14 42 ARP220 18 41 54 47.1 257.6 3.1 50.6 22 1969 02 14 42 02 17 12 --- 18 44 24 46.6 258.1 3.1 50.7 150 2008 02 14 43 02 17 38 J1532+2344 18 44 51 46.3 259.0 3.2 51.0 22 2008 02 17 38 02 18 38 =1530+239 18 45 51 46.1 259.2 3.2 51.1 60 2023 02 17 39 02 19 05 ARP220 18 46 17 46.3 258.5 3.2 50.8 22 2023 02 19 05 02 21 35 --- 18 48 48 45.8 259.1 3.2 50.9 150 2062 02 19 06 02 22 01 J1532+2344 18 49 15 45.5 259.9 3.3 51.3 22 2062 02 22 01 02 23 01 =1530+239 18 50 15 45.3 260.1 3.3 51.3 60 2077 02 22 02 02 23 27 ARP220 18 50 41 45.5 259.4 3.2 51.0 22 2077 02 23 27 02 25 57 --- 18 53 11 45.0 260.0 3.3 51.1 150 2115 02 23 28 Schedule for URUMQI (Code Ur ) Page 7 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 02 26 24 J1532+2344 18 53 38 44.7 260.7 3.3 51.4 23 2115 02 26 24 02 27 24 =1530+239 18 54 39 44.5 261.0 3.3 51.5 60 2131 02 26 25 02 27 50 ARP220 18 55 05 44.7 260.3 3.3 51.2 22 2131 02 27 50 02 30 20 --- 18 57 35 44.3 260.9 3.4 51.3 150 2169 02 27 51 02 30 48 J1532+2344 18 58 02 43.9 261.6 3.4 51.6 23 2169 02 30 48 02 31 48 =1530+239 18 59 03 43.7 261.8 3.4 51.6 60 2185 02 30 49 02 32 14 ARP220 18 59 29 43.9 261.2 3.4 51.4 22 2185 02 32 14 02 34 44 --- 19 01 59 43.5 261.7 3.4 51.5 150 2223 02 32 15 02 35 11 J1532+2344 19 02 27 43.1 262.5 3.5 51.8 23 2223 02 35 11 02 36 11 =1530+239 19 03 27 43.0 262.7 3.5 51.8 60 2238 02 35 12 02 36 37 ARP220 19 03 53 43.1 262.1 3.5 51.6 22 2238 02 36 37 02 39 07 --- 19 06 23 42.7 262.6 3.5 51.7 150 2277 02 36 38 02 39 35 J1532+2344 19 06 51 42.3 263.3 3.6 51.9 23 2277 02 39 35 02 40 35 =1530+239 19 07 51 42.2 263.5 3.6 51.9 60 2292 02 39 36 02 42 41 OQ208 19 09 58 29.1 282.7 5.0 53.5 98 2292 02 42 41 02 47 41 --- 19 14 59 28.2 283.5 5.1 53.3 300 2369 02 42 42 02 49 47 J1532+2344 19 17 05 40.5 265.3 3.7 52.1 98 2369 02 49 47 02 50 47 =1530+239 19 18 05 40.3 265.4 3.7 52.2 60 2385 02 49 48 02 51 14 ARP220 19 18 32 40.5 264.9 3.7 52.0 23 2385 02 51 14 02 53 44 --- 19 21 03 40.0 265.3 3.8 52.0 150 2423 02 51 15 02 54 12 J1532+2344 19 21 31 39.7 266.1 3.8 52.2 24 2423 02 54 12 02 55 12 =1530+239 19 22 31 39.5 266.3 3.8 52.2 60 2438 02 54 13 02 55 39 ARP220 19 22 58 39.7 265.7 3.8 52.1 23 2438 02 55 39 02 58 09 --- 19 25 29 39.2 266.2 3.8 52.1 150 2477 02 55 40 02 58 38 J1532+2344 19 25 57 38.9 266.9 3.9 52.3 24 2477 02 58 38 02 59 38 =1530+239 19 26 57 38.7 267.1 3.9 52.3 60 2492 02 58 39 03 00 05 ARP220 19 27 25 38.9 266.5 3.9 52.1 23 2492 03 00 05 03 02 35 --- 19 29 55 38.4 267.0 3.9 52.2 150 2531 03 00 06 03 03 04 J1532+2344 19 30 24 38.1 267.7 3.9 52.3 25 2531 03 03 04 03 04 04 =1530+239 19 31 24 37.9 267.9 4.0 52.3 60 2546 03 03 05 Schedule for URUMQI (Code Ur ) Page 8 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 03 04 31 ARP220 19 31 52 38.1 267.3 3.9 52.2 23 2546 03 04 31 03 07 01 --- 19 34 22 37.6 267.8 4.0 52.2 150 2585 03 04 32 03 07 30 J1532+2344 19 34 51 37.3 268.5 4.0 52.4 25 2585 03 07 30 03 08 30 =1530+239 19 35 51 37.1 268.6 4.0 52.4 60 2600 03 07 31 03 08 58 ARP220 19 36 19 37.3 268.1 4.0 52.2 23 2600 03 08 58 03 11 28 --- 19 38 49 36.8 268.5 4.0 52.2 150 2638 03 08 59 03 11 57 J1532+2344 19 39 19 36.5 269.2 4.1 52.4 25 2638 03 11 57 03 12 57 =1530+239 19 40 19 36.3 269.4 4.1 52.4 60 2654 03 11 58 03 13 25 ARP220 19 40 47 36.5 268.9 4.1 52.3 24 2654 03 13 25 03 15 55 --- 19 43 17 36.0 269.3 4.1 52.3 150 2692 03 13 26 03 16 25 J1532+2344 19 43 47 35.7 270.0 4.2 52.4 25 2692 03 16 25 03 17 25 =1530+239 19 44 47 35.5 270.2 4.2 52.4 60 2708 03 16 26 03 17 53 ARP220 19 45 15 35.6 269.7 4.2 52.3 24 2708 03 17 53 03 20 23 --- 19 47 46 35.2 270.1 4.2 52.3 150 2746 03 17 54 03 20 52 J1532+2344 19 48 15 34.8 270.8 4.2 52.4 26 2746 03 20 52 03 21 52 =1530+239 19 49 15 34.7 270.9 4.3 52.4 60 2762 03 20 53 03 22 21 ARP220 19 49 44 34.8 270.4 4.2 52.3 24 2762 03 22 21 03 24 51 --- 19 52 14 34.4 270.9 4.3 52.3 150 2800 03 22 22 03 25 20 J1532+2344 19 52 44 34.0 271.5 4.3 52.4 26 2800 03 25 20 03 26 20 =1530+239 19 53 44 33.9 271.7 4.3 52.4 60 2815 03 25 21 03 26 49 ARP220 19 54 13 34.0 271.2 4.3 52.3 24 2815 03 26 49 03 29 19 --- 19 56 43 33.6 271.6 4.3 52.2 150 2854 03 26 50 03 29 49 J1532+2344 19 57 14 33.2 272.3 4.4 52.3 26 2854 03 29 49 03 30 49 =1530+239 19 58 14 33.0 272.5 4.4 52.3 60 2869 03 29 50 03 31 18 ARP220 19 58 42 33.2 272.0 4.4 52.2 24 2869 03 31 18 03 33 48 --- 20 01 13 32.8 272.4 4.4 52.2 150 2908 03 31 19 03 34 18 J1532+2344 20 01 43 32.4 273.0 4.5 52.3 26 2908 03 34 18 03 35 18 =1530+239 20 02 43 32.2 273.2 4.5 52.3 60 2923 03 34 19 03 35 47 ARP220 20 03 12 32.4 272.7 4.5 52.2 25 2923 03 35 47 03 38 17 --- 20 05 43 31.9 273.1 4.5 52.2 150 2962 03 35 48 Schedule for URUMQI (Code Ur ) Page 9 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 03 38 48 J1532+2344 20 06 14 31.6 273.8 4.5 52.2 26 2962 03 38 48 03 39 48 =1530+239 20 07 14 31.4 273.9 4.6 52.2 60 2977 03 38 49 03 40 17 ARP220 20 07 43 31.6 273.5 4.5 52.1 25 2977 03 40 17 03 42 47 --- 20 10 13 31.1 273.9 4.6 52.1 150 3015 03 40 18 03 43 17 J1532+2344 20 10 44 30.8 274.5 4.6 52.2 27 3015 03 43 17 03 44 17 =1530+239 20 11 44 30.6 274.7 4.6 52.2 60 3031 03 43 18 03 46 48 OQ208 20 14 15 18.0 292.3 6.1 49.7 123 3031 03 46 48 03 51 48 --- 20 19 16 17.2 293.1 6.2 49.3 300 3108 03 46 49 03 53 29 J1532+2344 20 20 58 28.9 276.2 4.8 52.0 74 3108 03 53 29 03 54 29 =1530+239 20 21 58 28.7 276.3 4.8 51.9 60 3123 03 53 30 03 54 55 ARP220 20 22 23 28.9 275.9 4.8 51.9 21 3123 03 54 55 03 57 25 --- 20 24 54 28.5 276.3 4.8 51.8 150 3162 03 54 56 03 57 51 J1532+2344 20 25 20 28.1 276.9 4.9 51.9 22 3162 03 57 51 03 58 51 =1530+239 20 26 20 28.0 277.0 4.9 51.8 60 3177 03 57 52 03 59 16 ARP220 20 26 45 28.1 276.6 4.8 51.8 21 3177 03 59 16 04 01 46 --- 20 29 16 27.7 277.0 4.9 51.7 150 3215 03 59 17 04 02 12 J1532+2344 20 29 41 27.4 277.6 4.9 51.8 22 3215 04 02 12 04 03 12 =1530+239 20 30 42 27.2 277.7 4.9 51.7 60 3231 04 02 13 04 03 42 ARP220 20 31 12 27.3 277.3 4.9 51.7 26 3231 04 03 42 04 06 12 --- 20 33 42 26.9 277.7 5.0 51.6 150 3269 04 03 43 04 06 43 J1532+2344 20 34 14 26.5 278.3 5.0 51.6 28 3269 04 06 43 04 07 43 =1530+239 20 35 14 26.4 278.5 5.0 51.6 60 3285 04 06 44 04 08 14 ARP220 20 35 44 26.5 278.0 5.0 51.6 26 3285 04 08 14 04 10 44 --- 20 38 15 26.1 278.4 5.0 51.5 150 3323 04 08 15 04 11 16 J1532+2344 20 38 47 25.7 279.0 5.1 51.5 28 3323 04 11 16 04 12 16 =1530+239 20 39 47 25.5 279.2 5.1 51.5 60 3338 04 11 17 04 12 46 ARP220 20 40 17 25.7 278.7 5.1 51.4 26 3338 04 12 46 04 15 16 --- 20 42 48 25.3 279.1 5.1 51.3 150 3377 04 12 47 04 15 48 J1532+2344 20 43 20 24.9 279.7 5.2 51.3 28 3377 04 15 48 04 16 48 =1530+239 20 44 20 24.7 279.9 5.2 51.3 60 3392 04 15 49 Schedule for URUMQI (Code Ur ) Page 10 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 04 17 18 ARP220 20 44 51 24.9 279.4 5.1 51.3 26 3392 04 17 18 04 19 48 --- 20 47 21 24.4 279.8 5.2 51.2 150 3431 04 17 19 04 20 21 J1532+2344 20 47 54 24.1 280.5 5.2 51.2 28 3431 04 20 21 04 21 21 =1530+239 20 48 54 23.9 280.6 5.3 51.1 60 3446 04 20 22 04 21 51 ARP220 20 49 24 24.1 280.2 5.2 51.1 26 3446 04 21 51 04 24 21 --- 20 51 55 23.6 280.6 5.3 51.0 150 3485 04 21 52 04 24 54 J1532+2344 20 52 27 23.3 281.2 5.3 51.0 28 3485 04 24 54 04 25 54 =1530+239 20 53 27 23.1 281.3 5.3 51.0 60 3500 04 24 55 04 26 24 ARP220 20 53 58 23.3 280.9 5.3 51.0 27 3500 04 26 24 04 28 54 --- 20 56 29 22.8 281.3 5.3 50.9 150 3538 04 26 25 04 29 27 J1532+2344 20 57 01 22.5 281.9 5.4 50.8 28 3538 04 29 27 04 30 27 =1530+239 20 58 01 22.3 282.1 5.4 50.8 60 3554 04 29 28 04 30 58 ARP220 20 58 32 22.4 281.6 5.4 50.8 27 3554 04 30 58 04 33 28 --- 21 01 03 22.0 282.0 5.4 50.7 150 3592 04 30 59 04 34 00 J1532+2344 21 01 35 21.7 282.6 5.5 50.6 29 3592 04 34 00 04 35 00 =1530+239 21 02 36 21.5 282.8 5.5 50.6 60 3608 04 34 01 04 35 31 ARP220 21 03 06 21.6 282.3 5.5 50.6 27 3608 04 35 31 04 38 01 --- 21 05 37 21.2 282.7 5.5 50.5 150 3646 04 35 32 04 38 34 J1532+2344 21 06 10 20.9 283.3 5.5 50.4 29 3646 04 38 34 04 39 34 =1530+239 21 07 10 20.7 283.5 5.6 50.4 60 3662 04 38 35 04 40 05 ARP220 21 07 41 20.8 283.0 5.5 50.4 27 3662 04 40 05 04 42 35 --- 21 10 11 20.4 283.4 5.6 50.3 150 3700 04 40 06 04 43 08 J1532+2344 21 10 44 20.0 284.0 5.6 50.2 29 3700 04 43 08 04 44 08 =1530+239 21 11 44 19.9 284.2 5.6 50.2 60 3715 04 43 09 04 44 39 ARP220 21 12 15 20.0 283.7 5.6 50.2 27 3715 04 44 39 04 47 09 --- 21 14 46 19.6 284.1 5.6 50.1 150 3754 04 44 40 04 47 41 J1532+2344 21 15 19 19.2 284.8 5.7 50.0 29 3754 04 47 41 04 48 41 =1530+239 21 16 19 19.1 284.9 5.7 50.0 60 3769 04 47 42 04 58 17 J1532+2344 21 25 56 17.4 286.4 5.9 49.5 573 3769 04 58 17 04 59 17 =1530+239 21 26 56 17.2 286.6 5.9 49.4 60 3785 04 58 18 Schedule for URUMQI (Code Ur ) Page 11 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 04 59 48 ARP220 21 27 27 17.3 286.1 5.9 49.4 27 3785 04 59 48 05 02 18 --- 21 29 57 16.9 286.5 5.9 49.3 150 3823 04 59 49 05 02 51 J1532+2344 21 30 30 16.6 287.1 5.9 49.2 29 3823 05 02 51 05 03 51 =1530+239 21 31 31 16.4 287.3 6.0 49.2 60 3838 05 02 52 05 04 22 ARP220 21 32 02 16.6 286.8 5.9 49.2 27 3838 05 04 22 05 06 52 --- 21 34 32 16.1 287.2 6.0 49.1 150 3877 05 04 23 05 07 25 J1532+2344 21 35 05 15.8 287.8 6.0 49.0 29 3877 05 07 25 05 08 25 =1530+239 21 36 05 15.6 288.0 6.0 48.9 60 3892 05 07 26 05 08 56 ARP220 21 36 36 15.8 287.6 6.0 48.9 27 3892 05 08 56 05 11 26 --- 21 39 07 15.3 287.9 6.1 48.8 150 3931 05 08 57 05 11 58 J1532+2344 21 39 40 15.0 288.6 6.1 48.7 29 3931 05 11 58 05 12 58 =1530+239 21 40 40 14.8 288.7 6.1 48.6 60 3946 05 11 59 05 13 29 ARP220 21 41 11 15.0 288.3 6.1 48.7 27 3946 05 13 29 05 15 59 --- 21 43 41 14.5 288.7 6.1 48.5 150 3985 05 13 30 05 16 32 J1532+2344 21 44 14 14.2 289.3 6.2 48.4 29 3985 05 16 32 05 17 32 =1530+239 21 45 14 14.1 289.4 6.2 48.3 60 4000 05 16 33 05 18 03 ARP220 21 45 45 14.2 289.0 6.2 48.4 27 4000 05 18 03 05 20 33 --- 21 48 16 13.8 289.4 6.2 48.3 150 4038 05 18 04 05 21 06 J1532+2344 21 48 49 13.4 290.0 6.3 48.1 29 4038 05 21 06 05 22 06 =1530+239 21 49 49 13.3 290.1 6.3 48.1 60 4054 05 21 07 05 22 37 ARP220 21 50 20 13.4 289.7 6.2 48.1 27 4054 05 22 37 05 25 07 --- 21 52 50 13.0 290.1 6.3 48.0 150 4092 05 22 38 05 25 40 J1532+2344 21 53 23 12.7 290.7 6.3 47.8 29 4092 05 25 40 05 26 40 =1530+239 21 54 23 12.5 290.9 6.3 47.8 60 4108 05 25 41 05 27 10 ARP220 21 54 54 12.6 290.4 6.3 47.8 27 4108 05 27 10 05 29 40 --- 21 57 25 12.2 290.8 6.4 47.7 150 4146 05 27 11 05 30 13 J1532+2344 21 57 57 11.9 291.4 6.4 47.5 28 4146 05 30 13 05 31 13 =1530+239 21 58 57 11.7 291.6 6.4 47.5 60 4162 05 30 14 05 31 33 J1532+2344 21 59 17 11.7 291.6 6.4 47.4 18 4162 05 31 33 05 32 33 =1530+239 22 00 18 11.5 291.8 6.4 47.4 60 4177 05 31 34 Schedule for URUMQI (Code Ur ) Page 12 3.6cm global VLBI observations of the starburst galaxy Arp 220 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 2 Mar 2023 Day 61 --- 05 33 04 ARP220 22 00 49 11.6 291.4 6.4 47.4 27 4177 05 33 04 05 35 34 --- 22 03 19 11.2 291.8 6.5 47.3 150 4215 05 33 05 05 36 06 J1532+2344 22 03 51 10.9 292.4 6.5 47.1 28 4215 05 36 06 05 37 06 =1530+239 22 04 52 10.7 292.5 6.5 47.0 60 4231 05 36 07 05 37 37 ARP220 22 05 23 10.9 292.1 6.5 47.1 27 4231 05 37 37 05 40 07 --- 22 07 53 10.4 292.5 6.5 47.0 150 4269 05 37 38 05 40 39 J1532+2344 22 08 25 10.1 293.1 6.6 46.8 28 4269 05 40 39 05 41 39 =1530+239 22 09 25 10.0 293.2 6.6 46.7 60 4285 05 40 40 05 42 10 ARP220 22 09 56 10.1 292.8 6.6 46.8 27 4285 05 42 10 05 44 40 --- 22 12 27 9.7 293.2 6.6 46.6 150 4323 05 42 11 05 45 12 J1532+2344 22 12 59 9.4 293.8 6.7 46.5 28 4323 05 45 12 05 46 12 =1530+239 22 13 59 9.2 294.0 6.7 46.4 60 4338 05 45 13 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.X2048glob --- 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: 21 Station: URUMQI Total bit rate: 2048 Format: MARK5B 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= 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 8100.00 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 C2 A1 C2 A1 C2 A1 C2 A1 C2 A1 C2 A1 C2 A1 C2 The following frequency sets based on these setups were used. Frequency Set: 7 Setup file default. Used with PCAL = off LO sum= 8272.00 8272.00 8272.00 8272.00 8336.00 8336.00 8336.00 8336.00 8400.00 8400.00 8400.00 8400.00 8464.00 8464.00 8464.00 8464.00 BBC fr= 172.00 172.00 172.00 172.00 236.00 236.00 236.00 236.00 300.00 300.00 300.00 300.00 364.00 364.00 364.00 364.00 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: 7 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) * ARP220 15 32 46.905485 * 15 34 57.250000 15 35 57.638290 0.00 23 40 07.75728 * 23 30 11.33000 23 25 19.02820 0.00 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 13.263724 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 23 12.26523 0.16 1328+307 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1331+30 GSFC 2016a X/S astro solution, 269 observations. * OQ208 14 04 45.615156 * 14 07 00.394415 14 08 03.396716 0.24 J1407+2827 28 41 29.23515 * 28 27 14.69019 28 20 25.40174 0.35 1404+286 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J1407+28 GSFC 2016a X/S astro solution, 68278 observations. 1514+197 15 14 40.985841 * 15 16 56.796164 15 17 59.778756 0.01 * J1516+1932 19 43 10.94247 * 19 32 12.99203 19 26 53.88295 0.02 J1516+19 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 4472 observations. 1530+239 15 30 36.092759 * 15 32 46.345214 15 33 46.707178 0.08 * J1532+2344 23 54 09.32913 * 23 44 05.26796 23 39 09.44313 0.14 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 171 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 ARP220 sess123.X2048glob 1 2 3 4 5 6 7 8 9 10 12 13 + 7.808 670.409 3C286 sess123.X2048glob 13 0.133 0.000 OQ208 sess123.X2048glob 1 2 3 4 5 6 7 8 9 10 12 13 + 1.504 118.536 J1516+1932 sess123.X2048glob 1 2 3 4 5 6 7 8 9 10 12 0.083 5.500 J1532+2344 sess123.X2048glob 1 2 3 4 5 6 7 8 9 10 12 13 + 5.125 433.102 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) ARP220 110.2 3C286 135.9 OQ208 129.2 J1516+1932 114.5 J1532+2344 110.7 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