September 2021 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 28720] GRB 210912A: BOOTES-5/JGT optical afterglow candidate
by GCN Circulars 12 Sep '21

12 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30823 SUBJECT: GRB 210912A: BOOTES-5/JGT optical afterglow candidate DATE: 21/09/12 15:04:10 GMT FROM: Youdong HU at IAA-CSIC <huyoudong072(a)hotmail.com> Y.-D. Hu, T.-R. Sun, E. Fernandez-Garcia, A. J. Castro-Tirado, R. Sanchez-Ramirez and M.D. Caballero-Garcia (IAA-CSIC), D. Hiriart and W. H. Lee (UNAM), C. J. Perez del Pulgar and I. Carrasco (UMA), I. H. Park (SKKU) on behalf of a larger collaboration, report: The 60cm BOOTES-5/JGT robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) automatically responded in 13 s to the Swift trigger for GRB 210912A (Troja et al., GCNC 30820). In the co-added clear image (30 x 1 s), we find an uncataloged optical source at (J2000) coordinates RA: 8:39:34.30, DEC:+79:13:17.5, which is located at the edge of the XRT error box (Troja et al., GCNC 30820) and for which we measure R = 18.5 mag. We propose this source to be the GRB 210219A optical afterglow, pending confirmation of its variability. Further observations are ongoing. We thak the staff at San Pedro Martir for their support.

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[vsnet-grb-info 28719] GECAM observations of bursts from SGR J1935+2154 (2021-09-11T07 to 2021-09-12T08)
by GCN Circulars 12 Sep '21

12 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30822 SUBJECT: GECAM observations of bursts from SGR J1935+2154 (2021-09-11T07 to 2021-09-12T08) DATE: 21/09/12 14:39:57 GMT FROM: Wangchen Xue at IHEP <xuewc(a)ihep.ac.cn> W. C. Xue, S. L. Xiong, C. Cai, Y. Huang, Z. W. Guo, C. Y. Li, X. B. Li, J. C. Liu, X. Y. Song, C. W. Wang, P. Wang, S. L. Xie, S. Xiao, Q. B. Yi, Y. Q. Zhang, G. Y. Zhao, X. Y. Zhao, Y. Zhao, C. Zheng, W. Chen, Y. Q. Du, D. Y. Guo, J. J. He, J. Liang, F. J. Lu, Q. Luo, X. Ma, W. X. Peng, R. Qiao, L. M. Song, J. Wang, H. Wu, P. Zhang, S. N. Zhang, X. L. Zhang, Z. Zhang, S. J. Zheng (IHEP), report on behalf of GECAM team: GECAM-B detected a series of bursts very probably from SGR J1935+2154, either by in-flight trigger or by on-ground search of the data, from 2021-09-11T07 to 2021-09-12T08. Here is the list of these bursts: Trigger Time (UTC) 2021-09-11T07:15:04.000 2021-09-11T16:35:46.500 2021-09-11T16:36:57.900 2021-09-11T16:38:01.050 2021-09-11T16:39:21.000 2021-09-11T16:50:03.850 2021-09-11T17:00:41.900 2021-09-11T17:01:09.800 2021-09-11T17:01:59.550 2021-09-11T17:04:29.800 2021-09-11T17:10:48.750 2021-09-11T18:02:13.500 2021-09-11T18:04:46.350 2021-09-11T18:54:36.050 2021-09-11T19:43:29.000 2021-09-11T19:46:50.050 2021-09-11T20:13:40.550 2021-09-11T20:22:59.050 2021-09-11T20:33:14.550 2021-09-11T21:07:28.350 2021-09-11T22:51:41.600 2021-09-12T00:34:37.450 2021-09-12T00:45:49.400 2021-09-12T05:14:07.950 2021-09-12T06:51:13.700 2021-09-12T07:28:07.500 Locations of all these bursts are consistent with SGR J1935+2154. Please note that all GECAM results here are preliminary.

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[vsnet-grb-info 28718] GRB 210912B: Fermi GBM Final Real-time Localization
by GCN Circulars 12 Sep '21

12 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30821 SUBJECT: GRB 210912B: Fermi GBM Final Real-time Localization DATE: 21/09/12 12:38:51 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply(a)GIOC.nsstc.nasa.gov> The Fermi GBM team reports the detection of a likely LONG GRB At 12:31:34 UT on 12 Sep 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210912B (trigger 653142699.29167 / 210912522). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 344.9, Dec = 24.6 (J2000 degrees, equivalent to J2000 22h 59m, 24d 36'), with a statistical uncertainty of 12.3 degrees. The angle from the Fermi LAT boresight is 103.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210912522/… The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210912522/… The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210912522/…

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[vsnet-grb-info 28717] GRB 210912A: Swift detection of a burst
by GCN Circulars 12 Sep '21

12 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30820 SUBJECT: GRB 210912A: Swift detection of a burst DATE: 21/09/12 11:18:18 GMT FROM: David Palmer at LANL <palmer(a)lanl.gov> E. Troja (NASA/GSFC/UMCP), A. P. Beardmore (U Leicester), R. Caputo (NASA/GSFC), N. J. Klingler (GSFC/UMBC/CRESSTII), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Neil Gehrels Swift Observatory Team: At 11:01:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 210912A (trigger=1072990). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 129.769, +79.194 which is RA(J2000) = 08h 39m 04s Dec(J2000) = +79d 11' 38" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a complex structure with a duration of about 40 sec. The peak count rate was ~2800 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 11:02:04.1 UT, 52.6 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 129.88358, 79.22292 which is equivalent to: RA(J2000) = 08h 39m 32.06s Dec(J2000) = +79d 13' 22.5" with an uncertainty of 7.5 arcseconds (radius, 90% containment). This location is 129 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at https://www.swift.ac.uk/sper. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 2.40 x 10^20 cm^-2 (Willingale et al. 2013). The initial flux in the 2.5 s image was 6.40e-10 erg cm^-2 s^-1 (0.2-10 keV). There are no UVOT data available. Burst Advocate for this burst is E. Troja (eleonora.troja AT nasa.gov) Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/)

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[vsnet-grb-info 28716] Fermi trigger No 653093506: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30819 SUBJECT: Fermi trigger No 653093506: Global MASTER-Net observations report DATE: 21/09/11 23:30:16 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.95 (trigger No 653093506,19h 23m 33.60s , +21d 45m 36.0s, R=18.94) errorbox 165 sec after notice time and 208 sec after trigger time at 2021-09-11 22:55:10 UT, with upper limit up to 17.6 mag. The observations began at zenith distance = 68 deg. The sun altitude is -38.8 deg. The galactic latitude b = 3 deg., longitude l = 56 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1718035 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 238 | 2021-09-11 22:55:10 | MASTER-Tavrida | (19h 42m 50.23s , +14d 10m 49.8s) | C | 60 | 15.6 | 469 | 2021-09-11 22:59:00 | MASTER-Tavrida | (20h 14m 14.24s , +14d 10m 48.6s) | C | 60 | 17.0 | 548 | 2021-09-11 23:00:19 | MASTER-Tavrida | (20h 21m 45.86s , +14d 09m 48.0s) | C | 60 | 17.1 | 627 | 2021-09-11 23:01:38 | MASTER-Tavrida | (20h 29m 54.86s , +14d 08m 48.2s) | C | 60 | 17.3 | 706 | 2021-09-11 23:02:57 | MASTER-Tavrida | (20h 11m 03.14s , +21d 45m 15.2s) | C | 60 | 16.3 | 785 | 2021-09-11 23:04:16 | MASTER-Tavrida | (20h 19m 37.72s , +21d 46m 28.6s) | C | 60 | 16.0 | 1023 | 2021-09-11 23:08:14 | MASTER-Tavrida | (19h 34m 34.30s , +14d 10m 22.6s) | C | 60 | 15.3 | 1102 | 2021-09-11 23:09:33 | MASTER-Tavrida | (19h 50m 16.16s , +14d 08m 15.3s) | C | 60 | 16.4 | 1181 | 2021-09-11 23:10:52 | MASTER-Tavrida | (19h 58m 38.40s , +14d 08m 19.1s) | C | 60 | 16.9 | 1261 | 2021-09-11 23:12:12 | MASTER-Tavrida | (19h 42m 53.12s , +14d 09m 45.2s) | C | 60 | 16.1 | 1699 | 2021-09-11 23:19:30 | MASTER-Tavrida | (20h 36m 24.65s , +19d 52m 31.4s) | C | 60 | 17.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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[vsnet-grb-info 28715] Fermi trigger No 653066776: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30818 SUBJECT: Fermi trigger No 653066776: Global MASTER-Net observations report DATE: 21/09/11 22:30:14 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.64 (trigger No 653066776,19h 54m 52.80s , +10d 04m 48.0s, R=4.24) errorbox 22093 sec after notice time and 22135 sec after trigger time at 2021-09-11 21:35:07 UT, with upper limit up to 18.3 mag. The observations began at zenith distance = 49 deg. The sun altitude is -41.7 deg. The galactic latitude b = -10 deg., longitude l = 50 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1717607 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 22166 | 2021-09-11 21:35:07 | MASTER-Tavrida | (20h 01m 18.32s , +16d 06m 41.1s) | C | 60 | 18.3 | 22796 | 2021-09-11 21:45:37 | MASTER-Tavrida | (19h 48m 57.15s , +12d 19m 07.8s) | C | 60 | 17.7 | 23724 | 2021-09-11 22:01:05 | MASTER-Tavrida | (19h 40m 52.24s , +12d 17m 26.1s) | C | 60 | 17.2 | 23803 | 2021-09-11 22:02:24 | MASTER-Tavrida | (19h 48m 56.93s , +12d 16m 26.0s) | C | 60 | 17.5 | 23882 | 2021-09-11 22:03:43 | MASTER-Tavrida | (20h 05m 58.01s , +14d 12m 15.3s) | C | 60 | 18.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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[vsnet-grb-info 28714] Fermi trigger No 653084584: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30817 SUBJECT: Fermi trigger No 653084584: Global MASTER-Net observations report DATE: 21/09/11 21:45:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.85 (trigger No 653084584,20h 06m 38.40s , +17d 48m 00.0s, R=6.02) errorbox 1419 sec after notice time and 1775 sec after trigger time at 2021-09-11 20:52:34 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 40 deg. The sun altitude is -40.5 deg. The galactic latitude b = -8 deg., longitude l = 58 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1717913 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1805 | 2021-09-11 20:52:34 | MASTER-Tavrida | (20h 06m 05.89s , +18d 03m 18.5s) | C | 60 | 15.0 | 2200 | 2021-09-11 20:59:09 | MASTER-Tavrida | (20h 01m 15.80s , +16d 08m 42.0s) | C | 60 | 15.8 | 2280 | 2021-09-11 21:00:28 | MASTER-Tavrida | (20h 09m 30.25s , +16d 07m 58.6s) | C | 60 | 17.0 | 2655 | 2021-09-11 21:06:44 | MASTER-Tavrida | (20h 22m 07.75s , +18d 02m 57.9s) | C | 60 | 18.0 | 2735 | 2021-09-11 21:08:03 | MASTER-Tavrida | (19h 57m 46.68s , +18d 01m 40.7s) | C | 60 | 17.7 | 2814 | 2021-09-11 21:09:22 | MASTER-Tavrida | (20h 06m 07.44s , +18d 00m 41.9s) | C | 60 | 18.0 | 2893 | 2021-09-11 21:10:41 | MASTER-Tavrida | (20h 11m 41.77s , +19d 56m 42.2s) | C | 60 | 18.0 | 2972 | 2021-09-11 21:12:00 | MASTER-Tavrida | (20h 20m 13.05s , +19d 54m 58.8s) | C | 60 | 18.1 | 3051 | 2021-09-11 21:13:19 | MASTER-Tavrida | (20h 17m 01.04s , +16d 07m 38.6s) | C | 60 | 17.9 | 3130 | 2021-09-11 21:14:39 | MASTER-Tavrida | (20h 25m 21.66s , +16d 08m 40.8s) | C | 60 | 18.5 | 3209 | 2021-09-11 21:15:58 | MASTER-Tavrida | (20h 01m 17.24s , +16d 07m 23.9s) | C | 60 | 18.3 | 3288 | 2021-09-11 21:17:17 | MASTER-Tavrida | (20h 09m 30.83s , +16d 06m 25.3s) | C | 60 | 18.3 | 3646 | 2021-09-11 21:23:15 | MASTER-Tavrida | (20h 03m 59.04s , +19d 56m 13.8s) | C | 60 | 17.8 | 3725 | 2021-09-11 21:24:34 | MASTER-Tavrida | (20h 13m 48.20s , +18d 01m 14.2s) | C | 60 | 18.4 | 3805 | 2021-09-11 21:25:53 | MASTER-Tavrida | (20h 22m 07.55s , +18d 00m 16.0s) | C | 60 | 18.2 | 3884 | 2021-09-11 21:27:12 | MASTER-Tavrida | (19h 57m 48.39s , +18d 00m 00.1s) | C | 60 | 18.0 | 3963 | 2021-09-11 21:28:31 | MASTER-Tavrida | (20h 06m 09.91s , +18d 01m 52.4s) | C | 60 | 18.3 | 4042 | 2021-09-11 21:29:50 | MASTER-Tavrida | (20h 11m 41.97s , +19d 54m 23.0s) | C | 60 | 18.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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[vsnet-grb-info 28713] Fermi trigger No 653083551: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30816 SUBJECT: Fermi trigger No 653083551: Global MASTER-Net observations report DATE: 21/09/11 21:45:35 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.84 (trigger No 653083551,19h 06m 36.00s , +06d 22m 01.2s, R=29.37) errorbox 1503 sec after notice time and 1538 sec after trigger time at 2021-09-11 20:31:25 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 40 deg. The sun altitude is -39.3 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB210911.84 errorbox 4042 sec after notice time and 4077 sec after trigger time at 2021-09-11 21:13:44 UT, with upper limit up to 14.9 mag. The observations began at zenith distance = 56 deg. The sun altitude is -42.6 deg. The galactic latitude b = -1 deg., longitude l = 41 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1717890 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1569 | 2021-09-11 20:31:25 | MASTER-Tavrida | (20h 56m 20.36s , +07d 03m 29.2s) | C | 60 | 14.2 | 1807 | 2021-09-11 20:35:22 | MASTER-Tavrida | (20h 53m 55.45s , +10d 49m 34.2s) | C | 60 | 13.1 | 1965 | 2021-09-11 20:38:01 | MASTER-Tavrida | (21h 02m 29.75s , +12d 43m 32.0s) | C | 60 | 13.0 | 2297 | 2021-09-11 20:43:33 | MASTER-Tavrida | (20h 42m 48.09s , +10d 26m 49.8s) | C | 60 | 13.5 | 2376 | 2021-09-11 20:44:52 | MASTER-Tavrida | (20h 43m 02.82s , +12d 19m 47.6s) | C | 60 | 16.0 | 2534 | 2021-09-11 20:47:30 | MASTER-Tavrida | (21h 00m 41.98s , +06d 39m 18.0s) | C | 60 | 14.3 | 2613 | 2021-09-11 20:48:49 | MASTER-Tavrida | (20h 51m 17.14s , +12d 20m 00.7s) | C | 60 | 17.3 | 2838 | 2021-09-11 20:52:34 | MASTER-Tavrida | (20h 06m 05.89s , +18d 03m 18.5s) | C | 60 | 15.0 | 2917 | 2021-09-11 20:53:53 | MASTER-Tavrida | (20h 58m 44.19s , +12d 20m 39.0s) | C | 60 | 17.4 | 2996 | 2021-09-11 20:55:12 | MASTER-Tavrida | (21h 06m 50.09s , +12d 19m 40.7s) | C | 60 | 16.1 | 3075 | 2021-09-11 20:56:31 | MASTER-Tavrida | (20h 43m 02.17s , +08d 31m 41.4s) | C | 60 | 17.5 | 3154 | 2021-09-11 20:57:50 | MASTER-Tavrida | (20h 51m 04.91s , +08d 33m 01.4s) | C | 60 | 17.4 | 3233 | 2021-09-11 20:59:09 | MASTER-Tavrida | (20h 01m 15.80s , +16d 08m 42.0s) | C | 60 | 15.8 | 3312 | 2021-09-11 21:00:28 | MASTER-Tavrida | (20h 09m 30.25s , +16d 07m 58.6s) | C | 60 | 17.0 | 3392 | 2021-09-11 21:01:48 | MASTER-Tavrida | (20h 52m 35.14s , +06d 39m 08.5s) | C | 60 | 18.2 | 3471 | 2021-09-11 21:03:07 | MASTER-Tavrida | (21h 00m 44.87s , +06d 38m 10.0s) | C | 60 | 18.4 | 3688 | 2021-09-11 21:06:44 | MASTER-Tavrida | (20h 22m 07.75s , +18d 02m 57.9s) | C | 60 | 18.0 | 3767 | 2021-09-11 21:08:03 | MASTER-Tavrida | (19h 57m 46.68s , +18d 01m 40.7s) | C | 60 | 17.7 | 3846 | 2021-09-11 21:09:22 | MASTER-Tavrida | (20h 06m 07.44s , +18d 00m 41.9s) | C | 60 | 18.0 | 3925 | 2021-09-11 21:10:41 | MASTER-Tavrida | (20h 11m 41.77s , +19d 56m 42.2s) | C | 60 | 18.0 | 4005 | 2021-09-11 21:12:00 | MASTER-Tavrida | (20h 20m 13.05s , +19d 54m 58.8s) | C | 60 | 18.1 | 4084 | 2021-09-11 21:13:19 | MASTER-Tavrida | (20h 17m 01.04s , +16d 07m 38.6s) | C | 60 | 17.9 | 4108 | 2021-09-11 21:13:44 | MASTER-Kislovodsk | (19h 32m 57.91s , +16d 24m 17.0s) | C | 60 | 14.2 | 4108 | 2021-09-11 21:13:44 | MASTER-Kislovodsk | (19h 28m 40.86s , +16d 46m 48.5s) | C | 60 | 14.9 | 4163 | 2021-09-11 21:14:39 | MASTER-Tavrida | (20h 25m 21.66s , +16d 08m 40.8s) | C | 60 | 18.5 | 4188 | 2021-09-11 21:15:04 | MASTER-Kislovodsk | (19h 33m 49.95s , +14d 51m 50.1s) | C | 60 | 14.1 | 4242 | 2021-09-11 21:15:58 | MASTER-Tavrida | (20h 01m 17.24s , +16d 07m 23.9s) | C | 60 | 18.3 | 4321 | 2021-09-11 21:17:17 | MASTER-Tavrida | (20h 09m 30.83s , +16d 06m 25.3s) | C | 60 | 18.3 | 4679 | 2021-09-11 21:23:15 | MASTER-Tavrida | (20h 03m 59.04s , +19d 56m 13.8s) | C | 60 | 17.8 | 4758 | 2021-09-11 21:24:34 | MASTER-Tavrida | (20h 13m 48.20s , +18d 01m 14.2s) | C | 60 | 18.4 | 4837 | 2021-09-11 21:25:53 | MASTER-Tavrida | (20h 22m 07.55s , +18d 00m 16.0s) | C | 60 | 18.2 | 4916 | 2021-09-11 21:27:12 | MASTER-Tavrida | (19h 57m 48.39s , +18d 00m 00.1s) | C | 60 | 18.0 | 4996 | 2021-09-11 21:28:31 | MASTER-Tavrida | (20h 06m 09.91s , +18d 01m 52.4s) | C | 60 | 18.3 | 5075 | 2021-09-11 21:29:50 | MASTER-Tavrida | (20h 11m 41.97s , +19d 54m 23.0s) | C | 60 | 18.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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[vsnet-grb-info 28712] Fermi trigger No 653079281: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30815 SUBJECT: Fermi trigger No 653079281: Global MASTER-Net observations report DATE: 21/09/11 19:45:37 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.79 (trigger No 653079281,20h 47m 33.60s , +10d 07m 12.0s, R=11.51) errorbox 737 sec after notice time and 905 sec after trigger time at 2021-09-11 19:09:41 UT, with upper limit up to 18.7 mag. The observations began at zenith distance = 33 deg. The sun altitude is -31.1 deg. The galactic latitude b = -21 deg., longitude l = 57 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1717843 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 935 | 2021-09-11 19:09:41 | MASTER-Tavrida | (20h 45m 51.77s , +10d 52m 24.2s) | C | 60 | 18.7 | 1014 | 2021-09-11 19:11:00 | MASTER-Tavrida | (20h 53m 57.88s , +10d 53m 48.2s) | C | 60 | 18.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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[vsnet-grb-info 28711] Fermi trigger No 653066130: Global MASTER-Net observations report
by GCN Circulars 11 Sep '21

11 Sep '21

TITLE: GCN CIRCULAR NUMBER: 30814 SUBJECT: Fermi trigger No 653066130: Global MASTER-Net observations report DATE: 21/09/11 19:45:24 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210911.64 (trigger No 653066130,19h 54m 14.40s , +27d 03m 36.0s, R=1) errorbox 9456 sec after notice time and 10747 sec after trigger time at 2021-09-11 18:14:32 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 18 deg. The sun altitude is -23.3 deg. The galactic latitude b = -1 deg., longitude l = 64 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1717622 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 10777 | 2021-09-11 18:14:32 | MASTER-Tavrida | (20h 01m 04.70s , +26d 07m 50.2s) | C | 60 | 18.3 | 11647 | 2021-09-11 18:29:02 | MASTER-Tavrida | (19h 52m 03.36s , +26d 05m 41.4s) | C | 60 | 18.5 | 11726 | 2021-09-11 18:30:21 | MASTER-Tavrida | (20h 00m 56.03s , +26d 07m 05.1s) | C | 60 | 18.6 | 11936 | 2021-09-11 18:33:51 | MASTER-Tavrida | (20h 04m 02.18s , +28d 01m 24.6s) | C | 60 | 18.2 | 12094 | 2021-09-11 18:36:29 | MASTER-Tavrida | (19h 46m 55.90s , +27d 59m 44.9s) | C | 60 | 17.4 | 12410 | 2021-09-11 18:41:45 | MASTER-Tavrida | (19h 51m 15.35s , +29d 54m 16.4s) | C | 60 | 17.4 | 12648 | 2021-09-11 18:45:43 | MASTER-Tavrida | (19h 51m 59.75s , +26d 05m 32.7s) | C | 60 | 18.5 | 12727 | 2021-09-11 18:47:02 | MASTER-Tavrida | (20h 00m 55.95s , +26d 06m 42.1s) | C | 60 | 18.6 | 12806 | 2021-09-11 18:48:21 | MASTER-Tavrida | (19h 54m 57.60s , +28d 00m 03.6s) | C | 60 | 17.7 | 12886 | 2021-09-11 18:49:41 | MASTER-Tavrida | (20h 03m 59.85s , +28d 01m 01.8s) | C | 60 | 18.2 | 13054 | 2021-09-11 18:52:28 | MASTER-Tavrida | (19h 46m 48.49s , +27d 58m 55.5s) | C | 60 | 17.2 | 13530 | 2021-09-11 19:00:25 | MASTER-Tavrida | (19h 51m 10.95s , +29d 52m 49.5s) | C | 60 | 17.2 | 13769 | 2021-09-11 19:04:24 | MASTER-Tavrida | (19h 55m 01.08s , +28d 00m 09.9s) | C | 60 | 17.5 | 13848 | 2021-09-11 19:05:43 | MASTER-Tavrida | (20h 03m 56.27s , +27d 59m 35.1s) | C | 60 | 18.1 | 14007 | 2021-09-11 19:08:22 | MASTER-Tavrida | (19h 46m 51.34s , +27d 59m 28.0s) | C | 60 | 17.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.

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