COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: 18cm global VLBI observations of the starburst galaxy Arp 220 Exp. Code: gv028c 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 please use all 27 stations at 18cm. 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 use all 27 stations at 18cm. Schedule for VLBA_HN (Code Hn ) Page 2 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- Next scan frequencies: 1594.00 1594.00 1626.00 1626.00 1658.00 1658.00 1690.00 1690.00 Next BBC frequencies: 806.00 806.00 774.00 774.00 742.00 742.00 710.00 710.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 04 38 52 J1532+2344 11 13 10 33.7 87.8 -4.3 -53.0 0 0 04 38 52 04 40 22 =1530+239 11 14 41 34.0 88.1 -4.3 -53.0 90 12 04 38 53 04 40 53 ARP220 11 15 12 33.5 88.0 -4.3 -52.9 22 12 04 40 53 04 51 23 --- 11 25 44 35.5 89.8 -4.2 -52.9 630 93 04 40 54 04 51 55 J1532+2344 11 26 16 36.1 90.0 -4.1 -53.1 23 93 04 51 55 04 53 25 =1530+239 11 27 46 36.4 90.3 -4.1 -53.1 90 104 04 51 56 04 56 16 OQ208 11 30 38 55.2 101.7 -2.6 -54.5 122 104 04 56 16 04 57 16 --- 11 31 38 55.4 102.0 -2.6 -54.5 60 112 04 56 17 04 57 16 OQ208 11 31 38 55.4 102.0 -2.6 -54.5 -6 112 04 57 22 05 01 16 --- 11 35 38 56.1 102.9 -2.5 -54.2 234 142 04 57 17 05 03 55 J1532+2344 11 38 18 38.3 92.1 -3.9 -53.0 110 142 05 03 55 05 04 55 =1530+239 11 39 18 38.5 92.3 -3.9 -53.0 60 150 05 03 56 05 04 55 J1532+2344 11 39 18 38.5 92.3 -3.9 -53.0 -6 150 05 05 01 05 05 25 =1530+239 11 39 48 38.6 92.4 -3.9 -53.0 24 153 05 04 56 05 05 56 ARP220 11 40 19 38.1 92.3 -3.9 -52.9 22 153 05 05 56 05 16 26 --- 11 50 51 40.1 94.2 -3.8 -52.7 630 234 05 05 57 05 16 58 J1532+2344 11 51 22 40.7 94.4 -3.7 -52.8 23 234 05 16 58 05 17 58 =1530+239 11 52 23 40.9 94.6 -3.7 -52.8 60 242 05 16 59 05 17 58 J1532+2344 11 52 23 40.9 94.6 -3.7 -52.8 -6 242 05 18 04 05 18 28 =1530+239 11 52 53 41.0 94.7 -3.7 -52.8 24 245 05 17 59 05 18 58 ARP220 11 53 23 40.5 94.7 -3.7 -52.7 21 245 05 18 58 05 29 28 --- 12 03 55 42.4 96.6 -3.5 -52.4 630 326 05 18 59 05 30 00 J1532+2344 12 04 26 43.1 96.9 -3.5 -52.5 22 326 05 30 00 05 31 00 =1530+239 12 05 27 43.3 97.1 -3.5 -52.5 60 334 05 30 01 05 31 00 J1532+2344 12 05 27 43.3 97.1 -3.5 -52.5 -6 334 05 31 06 05 31 30 =1530+239 12 05 57 43.4 97.2 -3.5 -52.5 24 337 05 31 01 05 32 00 ARP220 12 06 27 42.9 97.1 -3.5 -52.4 21 337 05 32 00 05 42 30 --- 12 16 59 44.8 99.2 -3.3 -52.0 630 418 05 32 01 Schedule for VLBA_HN (Code Hn ) Page 3 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 05 43 01 J1532+2344 12 17 30 45.4 99.4 -3.3 -52.0 22 418 05 43 01 05 44 01 =1530+239 12 18 30 45.6 99.6 -3.3 -52.0 60 426 05 43 02 05 44 01 J1532+2344 12 18 30 45.6 99.6 -3.3 -52.0 -6 426 05 44 07 05 44 31 =1530+239 12 19 00 45.7 99.7 -3.2 -52.0 24 429 05 44 02 05 45 01 ARP220 12 19 30 45.3 99.7 -3.3 -51.9 21 429 05 45 01 05 55 31 --- 12 30 02 47.2 101.8 -3.1 -51.3 630 510 05 45 02 05 56 01 J1532+2344 12 30 32 47.8 102.1 -3.1 -51.4 22 510 05 56 01 05 57 31 =1530+239 12 32 03 48.1 102.5 -3.0 -51.3 90 522 05 56 02 05 59 51 OQ208 12 34 23 66.2 120.1 -1.6 -46.0 92 522 05 59 51 06 00 51 --- 12 35 23 66.3 120.5 -1.5 -45.8 60 529 05 59 52 06 00 51 OQ208 12 35 23 66.3 120.5 -1.5 -45.8 -6 529 06 00 57 06 04 51 --- 12 39 23 66.9 122.0 -1.5 -44.9 234 560 06 00 52 06 07 02 J1532+2344 12 41 35 49.8 104.5 -2.9 -50.7 84 560 06 07 02 06 08 02 =1530+239 12 42 35 49.9 104.8 -2.9 -50.6 60 567 06 07 03 06 08 02 J1532+2344 12 42 35 49.9 104.8 -2.9 -50.6 -6 567 06 08 08 06 08 32 =1530+239 12 43 05 50.0 104.9 -2.8 -50.6 24 570 06 08 03 06 09 01 ARP220 12 43 35 49.6 104.8 -2.9 -50.5 20 570 06 09 01 06 19 31 --- 12 54 06 51.4 107.2 -2.7 -49.7 630 652 06 09 02 06 20 01 J1532+2344 12 54 36 52.1 107.6 -2.7 -49.6 21 652 06 20 01 06 21 01 =1530+239 12 55 37 52.2 107.8 -2.6 -49.5 60 659 06 20 02 06 21 01 J1532+2344 12 55 37 52.2 107.8 -2.6 -49.5 -6 659 06 21 07 06 21 31 =1530+239 12 56 07 52.3 107.9 -2.6 -49.5 24 662 06 21 02 06 22 00 ARP220 12 56 36 51.9 107.8 -2.7 -49.4 20 662 06 22 00 06 32 30 --- 13 07 07 53.7 110.4 -2.5 -48.4 630 744 06 22 01 06 33 00 J1532+2344 13 07 37 54.3 110.8 -2.4 -48.3 21 744 06 33 00 06 34 00 =1530+239 13 08 38 54.5 111.1 -2.4 -48.2 60 751 06 33 01 06 34 00 J1532+2344 13 08 38 54.5 111.1 -2.4 -48.2 -6 751 06 34 06 06 34 30 =1530+239 13 09 08 54.6 111.2 -2.4 -48.2 24 754 06 34 01 06 34 59 ARP220 13 09 36 54.1 111.1 -2.4 -48.1 20 754 06 34 59 06 45 29 --- 13 20 08 55.9 113.9 -2.3 -46.8 630 836 06 35 00 Schedule for VLBA_HN (Code Hn ) Page 4 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 06 45 58 J1532+2344 13 20 38 56.5 114.4 -2.2 -46.7 21 836 06 45 58 06 46 58 =1530+239 13 21 38 56.7 114.7 -2.2 -46.6 60 843 06 45 59 06 46 58 J1532+2344 13 21 38 56.7 114.7 -2.2 -46.6 -6 843 06 47 04 06 47 28 =1530+239 13 22 08 56.7 114.8 -2.2 -46.5 24 846 06 46 59 06 47 57 ARP220 13 22 37 56.3 114.6 -2.2 -46.5 20 846 06 47 57 06 58 27 --- 13 33 08 58.0 117.7 -2.0 -44.9 630 927 06 47 58 06 58 56 J1532+2344 13 33 38 58.6 118.3 -2.0 -44.8 20 927 06 58 56 07 00 26 =1530+239 13 35 08 58.9 118.7 -2.0 -44.5 90 939 06 58 57 07 02 22 OQ208 13 37 04 74.1 154.3 -0.5 -21.2 74 939 07 02 22 07 03 22 --- 13 38 04 74.2 155.0 -0.5 -20.5 60 947 07 02 23 07 03 22 OQ208 13 38 04 74.2 155.0 -0.5 -20.5 -6 947 07 03 28 07 07 22 --- 13 42 05 74.5 158.1 -0.4 -18.0 234 977 07 03 23 07 09 13 J1532+2344 13 43 56 60.3 121.6 -1.8 -42.9 71 977 07 09 13 07 10 13 =1530+239 13 44 56 60.4 121.9 -1.8 -42.7 60 985 07 09 14 07 10 13 J1532+2344 13 44 56 60.4 121.9 -1.8 -42.7 -6 985 07 10 19 07 10 43 =1530+239 13 45 26 60.5 122.1 -1.8 -42.6 24 988 07 10 14 07 11 11 ARP220 13 45 55 60.1 121.8 -1.8 -42.7 19 988 07 11 11 07 21 41 --- 13 56 26 61.7 125.6 -1.7 -40.5 630 1069 07 11 12 07 22 10 J1532+2344 13 56 55 62.2 126.2 -1.6 -40.1 20 1069 07 22 10 07 23 10 =1530+239 13 57 55 62.4 126.6 -1.6 -39.9 60 1077 07 22 11 07 23 10 J1532+2344 13 57 55 62.4 126.6 -1.6 -39.9 -6 1077 07 23 16 07 23 40 =1530+239 13 58 25 62.5 126.8 -1.6 -39.8 24 1080 07 23 11 07 24 08 ARP220 13 58 53 62.0 126.5 -1.6 -39.9 19 1080 07 24 08 07 34 38 --- 14 09 25 63.5 130.6 -1.4 -37.3 630 1161 07 24 09 07 35 06 J1532+2344 14 09 54 64.1 131.4 -1.4 -36.8 20 1161 07 35 06 07 36 06 =1530+239 14 10 54 64.2 131.8 -1.4 -36.6 60 1169 07 35 07 07 36 06 J1532+2344 14 10 54 64.2 131.8 -1.4 -36.6 -6 1169 07 36 12 07 36 36 =1530+239 14 11 24 64.3 132.0 -1.4 -36.4 24 1172 07 36 07 07 37 04 ARP220 14 11 52 63.9 131.6 -1.4 -36.6 19 1172 07 37 04 07 47 34 --- 14 22 23 65.3 136.2 -1.2 -33.5 630 1253 07 37 05 Schedule for VLBA_HN (Code Hn ) Page 5 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 07 48 02 J1532+2344 14 22 52 65.8 137.1 -1.2 -32.9 20 1253 07 48 02 07 49 02 =1530+239 14 23 52 65.9 137.6 -1.2 -32.6 60 1261 07 48 03 07 49 02 J1532+2344 14 23 52 65.9 137.6 -1.2 -32.6 -6 1261 07 49 08 07 49 32 =1530+239 14 24 22 66.0 137.8 -1.2 -32.4 24 1264 07 49 03 07 50 00 ARP220 14 24 50 65.6 137.3 -1.2 -32.7 19 1264 07 50 00 08 00 30 --- 14 35 22 66.8 142.5 -1.0 -29.1 630 1345 07 50 01 08 00 58 J1532+2344 14 35 50 67.3 143.6 -1.0 -28.3 20 1345 08 00 58 08 02 28 =1530+239 14 37 20 67.5 144.3 -0.9 -27.8 90 1356 08 00 59 08 04 10 OQ208 14 39 03 74.1 205.7 0.5 21.1 50 1356 08 04 10 08 05 10 --- 14 40 03 74.0 206.4 0.5 21.7 60 1364 08 04 11 08 05 10 OQ208 14 40 03 74.0 206.4 0.5 21.7 -6 1364 08 05 16 08 09 10 --- 14 44 03 73.7 209.4 0.6 24.1 234 1394 08 05 11 08 10 49 J1532+2344 14 45 42 68.3 148.9 -0.8 -24.4 46 1394 08 10 49 08 11 49 =1530+239 14 46 42 68.4 149.5 -0.8 -23.9 60 1402 08 10 50 08 11 49 J1532+2344 14 46 42 68.4 149.5 -0.8 -23.9 -6 1402 08 11 55 08 12 19 =1530+239 14 47 13 68.5 149.8 -0.8 -23.7 24 1405 08 11 50 08 12 46 ARP220 14 47 40 68.1 149.1 -0.8 -24.2 19 1405 08 12 46 08 23 16 --- 14 58 12 69.0 155.2 -0.6 -19.6 630 1486 08 12 47 08 23 44 J1532+2344 14 58 40 69.4 156.6 -0.6 -18.5 19 1486 08 23 44 08 24 44 =1530+239 14 59 40 69.5 157.2 -0.6 -18.0 60 1494 08 23 45 08 24 44 J1532+2344 14 59 40 69.5 157.2 -0.6 -18.0 -6 1494 08 24 50 08 25 14 =1530+239 15 00 10 69.5 157.5 -0.6 -17.8 24 1497 08 24 45 08 25 42 ARP220 15 00 37 69.2 156.7 -0.6 -18.4 19 1497 08 25 42 08 36 12 --- 15 11 09 69.8 163.3 -0.4 -13.3 630 1578 08 25 43 08 36 39 J1532+2344 15 11 37 70.2 164.9 -0.4 -12.0 19 1578 08 36 39 08 37 39 =1530+239 15 12 37 70.2 165.5 -0.4 -11.5 60 1586 08 36 40 08 37 39 J1532+2344 15 12 37 70.2 165.5 -0.4 -11.5 -6 1586 08 37 45 08 38 09 =1530+239 15 13 07 70.3 165.9 -0.3 -11.3 24 1589 08 37 40 08 38 37 ARP220 15 13 34 69.9 164.9 -0.4 -12.0 19 1589 08 38 37 08 49 07 --- 15 24 06 70.3 171.9 -0.2 -6.5 630 1670 08 38 38 Schedule for VLBA_HN (Code Hn ) Page 6 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 08 49 34 J1532+2344 15 24 34 70.6 173.6 -0.2 -5.1 19 1670 08 49 34 08 50 34 =1530+239 15 25 34 70.6 174.3 -0.1 -4.5 60 1678 08 49 35 08 50 34 J1532+2344 15 25 34 70.6 174.3 -0.1 -4.5 -6 1678 08 50 40 08 51 04 =1530+239 15 26 04 70.7 174.7 -0.1 -4.3 24 1681 08 50 35 08 51 31 ARP220 15 26 31 70.4 173.5 -0.2 -5.2 18 1681 08 51 31 09 02 01 --- 15 37 03 70.5 180.7 0.0 0.6 630 1762 08 51 32 09 02 29 J1532+2344 15 37 31 70.7 182.6 0.1 2.1 19 1762 09 02 29 09 03 59 =1530+239 15 39 01 70.7 183.6 0.1 2.9 90 1774 09 02 30 09 05 34 OQ208 15 40 36 66.3 239.5 1.5 45.8 46 1774 09 05 34 09 06 34 --- 15 41 36 66.2 239.9 1.6 46.0 60 1782 09 05 35 09 06 34 OQ208 15 41 36 66.2 239.9 1.6 46.0 -6 1782 09 06 40 09 10 34 --- 15 45 37 65.5 241.4 1.6 46.9 234 1812 09 06 35 09 12 06 J1532+2344 15 47 09 70.5 189.2 0.2 7.4 46 1812 09 12 06 09 13 06 =1530+239 15 48 10 70.5 189.9 0.2 7.9 60 1819 09 12 07 09 13 06 J1532+2344 15 48 10 70.5 189.9 0.2 7.9 -6 1819 09 13 12 09 13 36 =1530+239 15 48 40 70.5 190.2 0.2 8.2 24 1823 09 13 07 09 14 03 ARP220 15 49 07 70.3 189.0 0.2 7.2 18 1823 09 14 03 09 24 33 --- 15 59 38 69.9 196.0 0.4 12.7 630 1904 09 14 04 09 25 00 J1532+2344 16 00 06 70.0 197.8 0.4 14.2 19 1904 09 25 00 09 26 00 =1530+239 16 01 06 69.9 198.5 0.5 14.7 60 1911 09 25 01 09 26 00 J1532+2344 16 01 06 69.9 198.5 0.5 14.7 -6 1911 09 26 06 09 26 30 =1530+239 16 01 36 69.9 198.8 0.5 14.9 24 1915 09 26 01 09 26 57 ARP220 16 02 03 69.8 197.5 0.4 13.9 18 1915 09 26 57 09 37 27 --- 16 12 35 69.1 204.1 0.6 19.0 630 1996 09 26 58 09 37 55 J1532+2344 16 13 02 69.1 205.9 0.7 20.5 19 1996 09 37 55 09 38 55 =1530+239 16 14 02 69.0 206.5 0.7 20.9 60 2003 09 37 56 09 38 55 J1532+2344 16 14 02 69.0 206.5 0.7 20.9 -6 2003 09 39 01 09 39 25 =1530+239 16 14 32 69.0 206.8 0.7 21.1 24 2006 09 38 56 09 39 52 ARP220 16 14 59 68.9 205.6 0.7 20.1 18 2006 09 39 52 09 50 22 --- 16 25 31 68.0 211.6 0.8 24.7 630 2088 09 39 53 Schedule for VLBA_HN (Code Hn ) Page 7 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 09 50 49 J1532+2344 16 25 59 67.9 213.4 0.9 26.1 19 2088 09 50 49 09 51 49 =1530+239 16 26 59 67.8 213.9 0.9 26.5 60 2095 09 50 50 09 51 49 J1532+2344 16 26 59 67.8 213.9 0.9 26.5 -6 2095 09 51 55 09 52 19 =1530+239 16 27 29 67.8 214.2 0.9 26.7 24 2098 09 51 50 09 52 46 ARP220 16 27 56 67.7 213.0 0.9 25.7 18 2098 09 52 46 10 03 16 --- 16 38 27 66.6 218.5 1.0 29.8 630 2180 09 52 47 10 03 43 J1532+2344 16 38 55 66.5 220.1 1.1 31.0 19 2180 10 03 43 10 05 13 =1530+239 16 40 25 66.3 220.8 1.1 31.5 90 2191 10 03 44 10 07 31 OQ208 16 42 43 55.7 257.6 2.6 54.3 103 2191 10 07 31 10 08 31 --- 16 43 43 55.6 257.9 2.6 54.4 60 2199 10 07 32 10 08 31 OQ208 16 43 43 55.6 257.9 2.6 54.4 -6 2199 10 08 37 10 12 31 --- 16 47 44 54.8 258.8 2.7 54.7 234 2229 10 08 32 10 14 55 J1532+2344 16 50 09 65.1 225.4 1.3 34.7 112 2229 10 14 55 10 15 55 =1530+239 16 51 09 65.0 225.8 1.3 35.0 60 2237 10 14 56 10 15 55 J1532+2344 16 51 09 65.0 225.8 1.3 35.0 -6 2237 10 16 01 10 16 25 =1530+239 16 51 39 64.9 226.0 1.3 35.1 24 2240 10 15 56 10 16 40 ARP220 16 51 54 65.0 224.9 1.3 34.2 6 2240 10 16 40 10 27 10 --- 17 02 26 63.6 229.4 1.4 37.3 630 2321 10 16 41 10 27 19 J1532+2344 17 02 35 63.4 230.6 1.5 38.2 0 2321 10 27 19 10 28 19 =1530+239 17 03 35 63.3 231.0 1.5 38.4 60 2329 10 27 11 10 28 19 J1532+2344 17 03 35 63.3 231.0 1.5 38.4 -6 2329 10 28 25 10 28 49 =1530+239 17 04 05 63.2 231.2 1.5 38.6 24 2332 10 28 20 10 28 58 ARP220 17 04 14 63.3 230.1 1.5 37.7 0 2332 10 28 58 10 39 28 --- 17 14 46 61.8 234.2 1.6 40.3 630 2413 10 28 50 10 39 37 J1532+2344 17 14 55 61.6 235.3 1.7 41.1 1 2413 10 39 37 10 40 37 =1530+239 17 15 55 61.5 235.7 1.7 41.3 60 2421 10 39 29 10 40 37 J1532+2344 17 15 55 61.5 235.7 1.7 41.3 -6 2421 10 40 43 10 41 07 =1530+239 17 16 25 61.4 235.9 1.7 41.4 24 2424 10 40 38 10 41 16 ARP220 17 16 34 61.5 234.8 1.7 40.7 1 2424 10 41 16 10 51 46 --- 17 27 06 59.9 238.5 1.9 42.9 630 2505 10 41 08 Schedule for VLBA_HN (Code Hn ) Page 8 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 10 51 56 J1532+2344 17 27 16 59.7 239.6 1.9 43.6 1 2505 10 51 55 10 52 56 =1530+239 17 28 16 59.5 239.9 1.9 43.8 60 2513 10 51 47 10 52 56 J1532+2344 17 28 16 59.5 239.9 1.9 43.8 -6 2513 10 53 02 10 53 26 =1530+239 17 28 46 59.5 240.1 1.9 43.9 24 2516 10 52 57 10 53 36 ARP220 17 28 56 59.6 239.1 1.9 43.2 1 2516 10 53 34 11 04 06 --- 17 39 27 57.9 242.5 2.1 45.0 630 2598 10 53 27 11 04 17 J1532+2344 17 39 38 57.7 243.5 2.1 45.7 2 2598 11 04 17 11 05 47 =1530+239 17 41 08 57.5 243.9 2.1 45.9 90 2609 11 04 18 11 08 13 OQ208 17 43 35 44.7 269.5 3.6 56.3 111 2609 11 08 13 11 09 13 --- 17 44 35 44.5 269.7 3.6 56.3 60 2617 11 08 14 11 09 13 OQ208 17 44 35 44.5 269.7 3.6 56.3 -6 2617 11 09 19 11 13 13 --- 17 48 36 43.8 270.4 3.7 56.3 234 2647 11 09 14 11 15 24 J1532+2344 17 50 48 55.9 246.7 2.3 47.2 96 2647 11 15 24 11 16 24 =1530+239 17 51 48 55.7 247.0 2.3 47.4 60 2655 11 15 25 11 16 24 J1532+2344 17 51 48 55.7 247.0 2.3 47.4 -6 2655 11 16 30 11 16 54 =1530+239 17 52 18 55.6 247.1 2.3 47.4 24 2658 11 16 25 11 17 05 ARP220 17 52 29 55.8 246.3 2.3 46.9 3 2658 11 17 05 11 27 35 --- 18 03 00 54.0 249.1 2.5 48.2 630 2739 11 17 06 11 27 46 J1532+2344 18 03 11 53.7 250.0 2.5 48.7 3 2739 11 27 46 11 28 46 =1530+239 18 04 11 53.6 250.3 2.5 48.8 60 2747 11 27 47 11 28 46 J1532+2344 18 04 11 53.6 250.3 2.5 48.8 -6 2747 11 28 52 11 29 16 =1530+239 18 04 41 53.5 250.4 2.5 48.8 24 2750 11 28 47 11 29 26 ARP220 18 04 52 53.7 249.6 2.5 48.4 2 2750 11 29 26 11 39 56 --- 18 15 24 51.9 252.2 2.7 49.4 630 2831 11 29 27 11 40 07 J1532+2344 18 15 34 51.6 253.1 2.7 49.9 3 2831 11 40 07 11 41 07 =1530+239 18 16 34 51.4 253.3 2.7 50.0 60 2839 11 40 08 11 41 07 J1532+2344 18 16 34 51.4 253.3 2.7 50.0 -6 2839 11 41 13 11 41 37 =1530+239 18 17 04 51.3 253.4 2.7 50.0 24 2842 11 41 08 11 41 47 ARP220 18 17 15 51.5 252.6 2.7 49.6 2 2842 11 41 47 11 52 17 --- 18 27 47 49.7 255.1 2.9 50.4 630 2923 11 41 48 Schedule for VLBA_HN (Code Hn ) Page 9 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 11 52 27 J1532+2344 18 27 57 49.4 255.9 2.9 50.8 2 2923 11 52 27 11 53 27 =1530+239 18 28 57 49.2 256.1 2.9 50.9 60 2931 11 52 28 11 53 27 J1532+2344 18 28 57 49.2 256.1 2.9 50.9 -6 2931 11 53 33 11 53 57 =1530+239 18 29 27 49.1 256.2 2.9 50.9 24 2934 11 53 28 11 54 08 ARP220 18 29 38 49.4 255.5 2.9 50.6 2 2934 11 54 08 12 04 38 --- 18 40 09 47.5 257.8 3.1 51.2 630 3015 11 54 09 12 04 48 J1532+2344 18 40 19 47.2 258.6 3.1 51.6 2 3015 12 04 48 12 06 18 =1530+239 18 41 50 46.9 258.9 3.1 51.7 90 3026 12 04 49 12 07 26 OQ208 18 42 58 33.9 279.0 4.6 55.2 31 3026 12 07 26 12 08 26 --- 18 43 58 33.7 279.2 4.6 55.2 60 3034 12 07 27 12 08 26 OQ208 18 43 58 33.7 279.2 4.6 55.2 -6 3034 12 08 32 12 12 26 --- 18 47 59 33.0 279.8 4.7 55.1 234 3064 12 08 27 12 13 28 J1532+2344 18 49 01 45.6 260.4 3.3 52.0 26 3064 12 13 28 12 14 28 =1530+239 18 50 01 45.5 260.6 3.3 52.0 60 3072 12 13 29 12 14 28 J1532+2344 18 50 01 45.5 260.6 3.3 52.0 -6 3072 12 14 34 12 14 58 =1530+239 18 50 31 45.4 260.7 3.3 52.1 24 3075 12 14 29 12 15 07 ARP220 18 50 41 45.6 260.0 3.2 51.8 2 3075 12 15 06 12 25 37 --- 19 01 12 43.7 262.1 3.4 52.2 630 3157 12 14 59 12 25 47 J1532+2344 19 01 22 43.4 262.8 3.5 52.5 1 3157 12 25 45 12 26 47 =1530+239 19 02 22 43.2 263.0 3.5 52.5 60 3164 12 25 38 12 26 47 J1532+2344 19 02 22 43.2 263.0 3.5 52.5 -6 3164 12 26 53 12 27 17 =1530+239 19 02 52 43.1 263.1 3.5 52.5 24 3168 12 26 48 12 27 26 ARP220 19 03 02 43.4 262.4 3.5 52.3 1 3168 12 27 25 12 37 56 --- 19 13 33 41.4 264.4 3.6 52.6 630 3249 12 27 18 12 38 06 J1532+2344 19 13 43 41.2 265.1 3.7 52.8 1 3249 12 38 04 12 39 06 =1530+239 19 14 43 41.0 265.3 3.7 52.8 60 3257 12 37 57 12 39 06 J1532+2344 19 14 43 41.0 265.3 3.7 52.8 -6 3257 12 39 12 12 39 36 =1530+239 19 15 13 40.9 265.4 3.7 52.8 24 3260 12 39 07 12 39 45 ARP220 19 15 22 41.1 264.8 3.7 52.6 1 3260 12 39 44 12 50 15 --- 19 25 54 39.2 266.7 3.8 52.8 630 3341 12 39 37 Schedule for VLBA_HN (Code Hn ) Page 10 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 12 50 24 J1532+2344 19 26 03 38.9 267.3 3.9 53.0 1 3341 12 50 23 12 51 24 =1530+239 19 27 03 38.7 267.5 3.9 53.0 60 3349 12 50 16 12 51 24 J1532+2344 19 27 03 38.7 267.5 3.9 53.0 -6 3349 12 51 30 12 51 54 =1530+239 19 27 33 38.6 267.6 3.9 53.0 24 3352 12 51 25 12 52 03 ARP220 19 27 43 38.9 267.0 3.9 52.8 1 3352 12 52 02 13 02 33 --- 19 38 14 36.9 268.8 4.0 52.9 630 3433 12 51 55 13 02 42 J1532+2344 19 38 23 36.6 269.5 4.1 53.1 1 3433 13 02 41 13 04 12 =1530+239 19 39 54 36.4 269.7 4.1 53.1 90 3445 13 02 34 13 05 11 OQ208 19 40 52 23.6 287.6 5.5 52.5 22 3445 13 05 11 13 06 11 --- 19 41 53 23.4 287.7 5.6 52.4 60 3453 13 05 12 13 06 11 OQ208 19 41 53 23.4 287.7 5.6 52.4 -6 3453 13 06 17 13 10 11 --- 19 45 53 22.7 288.3 5.6 52.2 234 3483 13 06 12 13 11 15 J1532+2344 19 46 57 35.1 270.9 4.2 53.1 28 3483 13 11 15 13 12 15 =1530+239 19 47 57 34.9 271.1 4.2 53.0 60 3491 13 11 16 13 12 15 J1532+2344 19 47 57 34.9 271.1 4.2 53.0 -6 3491 13 12 21 13 12 45 =1530+239 19 48 27 34.8 271.2 4.2 53.0 24 3494 13 12 16 13 12 53 ARP220 19 48 36 35.0 270.6 4.2 52.9 1 3494 13 12 53 13 23 23 --- 19 59 08 33.1 272.4 4.4 52.9 630 3575 13 12 46 13 23 32 J1532+2344 19 59 17 32.8 273.0 4.4 53.0 1 3575 13 23 31 13 24 32 =1530+239 20 00 17 32.6 273.1 4.4 52.9 60 3583 13 23 24 13 24 32 J1532+2344 20 00 17 32.6 273.1 4.4 52.9 -6 3583 13 24 38 13 25 02 =1530+239 20 00 47 32.5 273.2 4.4 52.9 24 3586 13 24 33 13 25 11 ARP220 20 00 56 32.8 272.7 4.4 52.8 1 3586 13 25 10 13 35 41 --- 20 11 27 30.9 274.4 4.6 52.7 630 3667 13 25 03 13 35 50 J1532+2344 20 11 36 30.6 275.0 4.6 52.8 1 3667 13 35 49 13 36 50 =1530+239 20 12 36 30.4 275.1 4.6 52.8 60 3675 13 35 42 13 36 50 J1532+2344 20 12 36 30.4 275.1 4.6 52.8 -6 3675 13 36 56 13 37 20 =1530+239 20 13 06 30.3 275.2 4.7 52.7 24 3678 13 36 51 13 37 28 ARP220 20 13 15 30.5 274.7 4.6 52.7 1 3678 13 37 28 13 47 58 --- 20 23 47 28.6 276.4 4.8 52.5 630 3759 13 37 21 Schedule for VLBA_HN (Code Hn ) Page 11 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 13 48 08 J1532+2344 20 23 56 28.3 276.9 4.8 52.5 1 3759 13 48 06 13 49 08 =1530+239 20 24 56 28.1 277.1 4.9 52.5 60 3767 13 47 59 13 49 08 J1532+2344 20 24 56 28.1 277.1 4.9 52.5 -6 3767 13 49 14 13 49 38 =1530+239 20 25 26 28.1 277.2 4.9 52.5 24 3770 13 49 09 13 49 47 ARP220 20 25 36 28.3 276.7 4.8 52.4 1 3770 13 49 46 14 00 17 --- 20 36 07 26.4 278.3 5.0 52.1 630 3852 13 49 39 14 00 27 J1532+2344 20 36 17 26.1 278.9 5.0 52.2 2 3852 14 00 27 14 01 57 =1530+239 20 37 48 25.8 279.1 5.1 52.1 90 3863 14 00 28 14 03 23 OQ208 20 39 14 13.6 296.2 6.5 48.3 52 3863 14 03 23 14 04 23 --- 20 40 15 13.5 296.3 6.5 48.2 60 3871 14 03 24 14 04 23 OQ208 20 40 15 13.5 296.3 6.5 48.2 -6 3871 14 04 29 14 08 23 --- 20 44 15 12.8 296.9 6.6 47.9 234 3901 14 04 24 14 09 46 J1532+2344 20 45 38 24.4 280.3 5.2 51.8 49 3901 14 09 46 14 10 46 =1530+239 20 46 38 24.2 280.5 5.2 51.8 60 3909 14 09 47 14 10 46 J1532+2344 20 46 38 24.2 280.5 5.2 51.8 -6 3909 14 10 52 14 11 16 =1530+239 20 47 08 24.1 280.6 5.2 51.8 24 3912 14 10 47 14 11 27 ARP220 20 47 19 24.3 280.1 5.2 51.8 3 3912 14 11 27 14 21 57 --- 20 57 51 22.5 281.7 5.4 51.4 630 3993 14 11 28 14 22 10 J1532+2344 20 58 04 22.2 282.3 5.4 51.4 5 3993 14 22 10 14 23 10 =1530+239 20 59 04 22.0 282.4 5.4 51.3 60 4001 14 22 11 14 23 10 J1532+2344 20 59 04 22.0 282.4 5.4 51.3 -6 4001 14 23 16 14 23 40 =1530+239 20 59 34 21.9 282.5 5.4 51.3 24 4004 14 23 11 14 23 52 ARP220 20 59 47 22.1 282.0 5.4 51.3 5 4004 14 23 52 14 34 22 --- 21 10 19 20.2 283.6 5.6 50.8 630 4085 14 23 53 14 34 36 J1532+2344 21 10 32 19.9 284.2 5.6 50.8 5 4085 14 34 36 14 35 36 =1530+239 21 11 32 19.8 284.4 5.6 50.7 60 4093 14 34 37 14 35 36 J1532+2344 21 11 32 19.8 284.4 5.6 50.7 -6 4093 14 35 42 14 36 06 =1530+239 21 12 02 19.7 284.4 5.6 50.7 24 4096 14 35 37 14 36 18 ARP220 21 12 14 19.9 283.9 5.6 50.8 4 4096 14 36 18 14 46 48 --- 21 22 46 18.0 285.6 5.8 50.2 630 4177 14 36 19 Schedule for VLBA_HN (Code Hn ) Page 12 18cm 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2023 Day 72 --- 14 46 58 J1532+2344 21 22 56 17.8 286.1 5.8 50.2 2 4177 14 46 56 14 47 58 =1530+239 21 23 56 17.6 286.3 5.8 50.1 60 4185 14 46 49 14 47 58 J1532+2344 21 23 56 17.6 286.3 5.8 50.1 -6 4185 14 48 04 14 48 28 =1530+239 21 24 26 17.5 286.3 5.8 50.1 24 4188 14 47 59 14 48 37 ARP220 21 24 36 17.7 285.8 5.8 50.1 1 4188 14 48 36 14 59 07 --- 21 35 07 15.9 287.5 6.0 49.6 630 4269 14 48 29 14 59 16 J1532+2344 21 35 16 15.6 288.0 6.0 49.5 1 4269 14 59 15 15 00 46 =1530+239 21 36 46 15.3 288.2 6.0 49.4 90 4281 14 59 08 15 07 30 J1532+2344 21 43 32 14.2 289.3 6.2 49.0 398 4281 15 07 30 15 08 30 =1530+239 21 44 32 14.0 289.4 6.2 48.9 60 4289 15 07 31 15 08 30 J1532+2344 21 44 32 14.0 289.4 6.2 48.9 -6 4289 15 08 36 15 09 00 =1530+239 21 45 02 13.9 289.5 6.2 48.9 24 4292 15 08 31 15 09 09 ARP220 21 45 11 14.1 289.0 6.2 49.0 1 4292 15 09 08 15 19 39 --- 21 55 43 12.3 290.7 6.3 48.3 630 4373 15 09 01 15 19 48 J1532+2344 21 55 52 12.0 291.2 6.4 48.2 1 4373 15 19 47 15 20 48 =1530+239 21 56 52 11.9 291.4 6.4 48.1 60 4381 15 19 40 15 20 48 J1532+2344 21 56 52 11.9 291.4 6.4 48.1 -6 4381 15 20 54 15 21 18 =1530+239 21 57 22 11.8 291.4 6.4 48.1 24 4384 15 20 49 15 21 27 ARP220 21 57 31 12.0 290.9 6.4 48.2 1 4384 15 21 26 15 31 57 --- 22 08 03 10.2 292.6 6.5 47.4 630 4466 15 21 19 15 32 06 J1532+2344 22 08 12 10.0 293.1 6.6 47.3 1 4466 15 32 05 15 33 06 =1530+239 22 09 12 9.8 293.3 6.6 47.2 60 4473 15 31 58 15 33 06 J1532+2344 22 09 12 9.8 293.3 6.6 47.2 -6 4473 15 33 12 15 33 36 =1530+239 22 09 42 9.7 293.4 6.6 47.2 24 4476 15 33 07 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.L1024glob Matching groups in /home/guest/rmc/SCHED/sched11.6/catalogs/freq_RDBE.dat: v20cm_2 FD filtered above 1760. SC filtered above 1740. Setup group: 2 Station: VLBA_HN Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 14.6 2.4 14.6 The following frequency sets based on these setups were used. See the crd files for VLBA legacy system setups and pcal detection details. Frequency Set: 18 Setup file default. Used with PCAL = off LO sum= 1594.00 1594.00 1626.00 1626.00 1658.00 1658.00 1690.00 1690.00 BBC fr= 806.00 806.00 774.00 774.00 742.00 742.00 710.00 710.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 VLBA legacy crd files using 4 channels based on RDBE channels: 3 4 5 6 CRD fr= 766.00 766.00 734.00 734.00 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 18 19 20 21 22 23 24 25 26 27 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 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 57.940194 0.00 23 40 07.75728 * 23 30 11.33000 23 25 18.96580 0.00 From catalog imbedded in main SCHED input file. * 3C286 13 28 49.657769 * 13 31 08.288061 13 32 13.487531 0.17 J1331+3030 30 45 58.64066 * 30 30 32.95930 30 23 13.19246 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 03.650024 0.24 J1407+2827 28 41 29.23515 * 28 27 14.69019 28 20 26.03181 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 18 00.065612 0.01 * J1516+1932 19 43 10.94247 * 19 32 12.99203 19 26 53.79356 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 47.008502 0.08 * J1532+2344 23 54 09.32913 * 23 44 05.26796 23 39 09.39949 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.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 12.250 1600.189 3C286 sess123.L1024glob 17 0.133 0.000 OQ208 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 1.500 188.550 J1516+1932 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 0.083 10.000 J1532+2344 sess123.L1024glob 1 2 3 4 5 6 7 8 9 10 11 17 + 2.183 275.621 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 117.8 3C286 140.6 OQ208 135.1 J1516+1932 122.6 J1532+2344 118.2 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