//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29035 SUBJECT: Integral GRB201214.26: Global MASTER-Net observations report DATE: 20/12/14 06:57:07 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) was pointed to the Integral GRB201214.26 (trigger No 74429,11h 24m 00.12s , +33d 51m 11.8s, R=0.0541667) errorbox 1 sec after notice time and 28 sec after trigger time at 2020-12-14 06:19:23 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 9 deg. The sun altitude is -18.6 deg. The galactic latitude b = 71 deg., longitude l = 188 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1502296 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 34 | MASTER-IAC | C | 10 | 17.0 | 44 | MASTER-IAC | C | 30 | 17.2 | Coadd 55 | MASTER-IAC | C | 10 | 17.0 | 77 | MASTER-IAC | C | 10 | 17.1 | 105 | MASTER-IAC | C | 20 | 17.9 | 135 | MASTER-IAC | C | 80 | 18.9 | Coadd 141 | MASTER-IAC | C | 30 | 18.1 | 181 | MASTER-IAC | C | 30 | 18.1 | 226 | MASTER-IAC | C | 40 | 18.3 | 281 | MASTER-IAC | C | 150 | 19.3 | Coadd 282 | MASTER-IAC | C | 50 | 18.7 | 346 | MASTER-IAC | C | 60 | 18.8 | 427 | MASTER-IAC | C | 80 | 18.9 | 532 | MASTER-IAC | C | 290 | 19.9 | Coadd 520 | MASTER-IAC | C | 90 | 18.9 | 636 | MASTER-IAC | C | 120 | 19.4 | 777 | MASTER-IAC | C | 140 | 19.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29036 SUBJECT: GRB 201214A: Swift ToO observations DATE: 20/12/14 07:46:18 GMT FROM: Phil Evans at U of Leicester P. A. Evans (U. Leicester) reports on behalf of the Swift team: Swift has initiated a ToO observation of the INTEGRAL GRB 201214A. Automated analysis of the XRT data will be presented online at https://www.swift.ac.uk/ToO_GRBs/00021406 Any uncatalogued X-ray sources detected in this analysis will be reported on this website and via GCN COUNTERPART notices. These are not necessarily related to the INTEGRAL event. Any X-ray source considered to be a probable afterglow candidate will be reported via a GCN Circular after manual consideration. Details of the XRT automated analysis methods are detailed in Evans et al. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8). This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29037 SUBJECT: GRB 201214A: A long GRB detected by INTEGRAL DATE: 20/12/14 08:10:16 GMT FROM: Sandro Mereghetti at IASF-Milano/INAF S.Mereghetti (INAF, IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, E.Bozzo, V.Savchenko (ISDC, Versoix), L.Ducci (IAAT, Germany and ISDC, Versoix) and J.Borkowski (CAMK, Torun) report: a gamma ray burst lasting about 150 s has been detected by IBAS in the IBIS/ISGRI data at 6:18:20 UT of 14 December 2020. The refined coordinates (J2000) are: R.A. = 170.9361 deg DEC. = +33.8725 deg with an uncertainty of 2.5 arcmin (90% c.l.). A preliminary analysis gives a peak flux of about 0.1 ph/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 5e-7 erg/cm2. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29039 SUBJECT: GRB 201214B: Fermi GBM Final Real-time Localization DATE: 20/12/14 16:15:39 GMT FROM: Fermi GBM Team at MSFC/Fermi-GBM The Fermi GBM team reports the detection of a likely SHORT GRB At 16:07:46 UT on 14 Dec 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 201214B (trigger 629654871.61686 / 201214672). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 206.2, Dec = 12.2 (J2000 degrees, equivalent to J2000 13h 44m, 12d 11'), with a statistical uncertainty of 11.1 degrees. The angle from the Fermi LAT boresight is 20.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201214672/quicklook/glg_skymap_all_bn201214672.png The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201214672/quicklook/glg_healpix_all_bn201214672.fit The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn201214672/quicklook/glg_lc_medres34_bn201214672.gif //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29040 SUBJECT: GRB 201214A: Mates' birthday GRB optical limit from FRAM-ORM DATE: 20/12/14 16:48:18 GMT FROM: Martin Jelinek at Astro.Inst-AVCR,Ondrejov Martin Jelinek and Jan Strobl (ASU CAS Ondrejov, CZ), Sergey Karpov, Martin Masek, Petr Janecek, Jakub Jurysek, Jan Ebr, Ronan Cunniffe, Petr Travnicek and Michael Prouza (Institute of Physics, Prague, CZ) report: The 25cm robotic telescope FRAM-ORM at La Palma (Spain) reacted robotically to the INTEGRAL alert of GRB201214A (Mereghetti et al., GCNC 29037), obtaining a series of 20s unfiltered images starting at 06:19:23.3 UT, i.e. 32.8s post trigger. We do not detect any new or strongly variable source within a 20 arcmin FOV around the reported gamma-ray errorbox - neither in single images (detection limit R>~18.0) nor in a combined 40x20s frame (mean exp time 541s post trigger, with a limit R>~19.5). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29043 SUBJECT: GRB 201214B: Swift ToO observations DATE: 20/12/14 23:42:21 GMT FROM: Phil Evans at U of Leicester P. A. Evans (U. Leicester) reports on behalf of the Swift team: Swift has initiated a ToO observation of the Swift/BAT GRB 201214B. Automated analysis of the XRT data will be presented online at https://www.swift.ac.uk/ToO_GRBs/00021407 Any uncatalogued X-ray sources detected in this analysis will be reported on this website and via GCN COUNTERPART notices. These are not necessarily related to the Swift/BAT event. Any X-ray source considered to be a probable afterglow candidate will be reported via a GCN Circular after manual consideration. Details of the XRT automated analysis methods are detailed in Evans et al. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8). This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29044 SUBJECT: Fermi GRB 201214B: Global MASTER-Net observations report DATE: 20/12/15 00:15:31 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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 GRB 201214B ( Fermi GBM team, GCN 29039) errorbox 27106 sec after notice time and 27134 sec after trigger time at 2020-12-14 23:40:01 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 78 deg. The sun altitude is -57.5 deg. The galactic latitude b = 70 deg., longitude l = 346 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1502538 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 27165 | 2020-12-14 23:40:01 | MASTER-Tavrida | (13h 38m 31.09s , +18d 15m 51.4s) | C | 60 | 18.6 | 27483 | 2020-12-14 23:45:19 | MASTER-Tavrida | (13h 38m 25.91s , +18d 14m 10.0s) | C | 60 | 18.5 | 27867 | 2020-12-14 23:51:43 | MASTER-Tavrida | (13h 12m 59.27s , +16d 17m 10.4s) | C | 60 | 18.4 | 28027 | 2020-12-14 23:54:23 | MASTER-Tavrida | (13h 21m 32.36s , +18d 15m 02.8s) | C | 60 | 18.4 | 28106 | 2020-12-14 23:55:42 | MASTER-Tavrida | (13h 31m 21.52s , +20d 14m 55.6s) | C | 60 | 18.9 | 28186 | 2020-12-14 23:57:02 | MASTER-Tavrida | (13h 13m 02.71s , +16d 17m 02.2s) | C | 60 | 18.4 | 28421 | 2020-12-15 00:00:57 | MASTER-Tavrida | (13h 21m 31.21s , +18d 17m 09.9s) | C | 60 | 18.4 | 28500 | 2020-12-15 00:02:16 | MASTER-Tavrida | (13h 31m 22.57s , +20d 16m 00.3s) | C | 60 | 18.9 | 28580 | 2020-12-15 00:03:36 | MASTER-Tavrida | (13h 05m 33.46s , +14d 15m 34.2s) | C | 60 | 18.5 | 28659 | 2020-12-15 00:04:55 | MASTER-Tavrida | (13h 14m 18.52s , +20d 15m 55.0s) | C | 60 | 18.6 | 28739 | 2020-12-15 00:06:15 | MASTER-Tavrida | (13h 04m 42.98s , +18d 17m 31.2s) | C | 60 | 18.9 | 28818 | 2020-12-15 00:07:34 | MASTER-Tavrida | (13h 42m 17.57s , +22d 15m 25.0s) | C | 60 | 19.0 | 28897 | 2020-12-15 00:08:53 | MASTER-Tavrida | (13h 25m 03.32s , +22d 17m 01.8s) | C | 60 | 19.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29045 SUBJECT: GRB 201214B: Swift BAT location of short burst DATE: 20/12/15 02:40:30 GMT FROM: David Palmer at LANL K. K. Simpson (PSU), D. M. Palmer (LANL) and A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift Observatory Team: At 16:07:46 UT on 2020-12-14, simultaneously with the Fermi GBM detection of GRB 201214B (GCN 29039), BAT triggered (Trigger=1012872) on a rate increase at the 0.064 s timescale and produced an image. This image shows a 6 sigma peak, which was not significant enough to trigger an automated ground notification and repoint. The on-board calculated location ra, dec = 188.032, +9.045 was refined by ground analysis to 187.9710, +9.1031 which is RA(J2000) = 12h 31m 53s Dec(J2000) = 09d 06' 11” with an uncertainty of 2 arcminutes (radius, 90% containment, including systematic uncertainty). The currently-available BAT light curve shows a ~0.1 second long peak, with a possible smaller peak 0.3 seconds earlier. The peak value on a 64 ms timescale is ~3000 counts/s (15-350 keV) at the trigger time. Swift has begun XRT and UVOT observations of this source starting at T0+~28ks using the on-board BAT location (GCN 29043). Automated analysis of the XRT data will be presented online at https://www.swift.ac.uk/ToO_GRBs/00021407 The BAT location is consistent with both the Fermi-GBM position and the IPN annulus (Svinkin, priv. comm.). The temporal and positional coincidence with the Fermi GBM burst convinces us that the BAT location is correct. Burst Advocate for this burst is K. K. Simpson (kira.simpson1984 AT gmail.com). 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/) //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29048 SUBJECT: GRB 201214A: Swift-XRT observations DATE: 20/12/15 07:17:06 GMT FROM: Aaron Tohuvavohu at U Toronto J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), T. Sbarrato (INAF-OAB), P. D'Avanzo (INAF-OAB), M.G. Bernardini (INAF-OAB), B. Sbarufatti (PSU) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the INTEGRAL-detected burst GRB 201214A (Mereghetti et al. GCN Circ. 29037), collecting 4.1 ks of Photon Counting (PC) mode data between T0+5.2 ks and T0+23.6 ks. One uncatalogued X-ray source has been detected consistent with being within 246 arcsec of the INTEGRAL position, it is below the RASS limit and shows no definitive signs of fading. Therefore, at the present time we cannot confirm this as the afterglow. Details of this source are given below: Source 2: RA (J2000.0): 170.92446 = 11:23:41.87 Dec (J2000.0): +33.86930 = +33:52:09.5 Error: 2.2 arcsec (radius, 90% conf. [Enhanced position]) Count-rate: 0.0182 +/- 0.0024 ct s^-1 Distance: 36 arcsec from INTEGRAL position. Flux: (4.48 +/- 0.60)e-13 erg cm^-2 s^-1 (observed, 0.3-10 keV) Three uncatalogued sources were also detected too far from the GRB position to be likely afterglow candidates. The results of the XRT-team automatic analysis of the XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/ToO_GRBs/00021406. This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29052 SUBJECT: GRB 201214B: Swift-XRT observations DATE: 20/12/15 15:48:15 GMT FROM: Boris Sbarufatti at PSU A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), P. D'Avanzo (INAF-OAB), M.G. Bernardini (INAF-OAB), E. Ambrosi (INAF-IASFPA) , B. Sbarufatti (PSU), D.N. Burrows (PSU) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the Swift/BAT-detected burst GRB 201214B, collecting 5.8 ks of Photon Counting (PC) mode data between T0+27.2 ks and T0+51.1 ks. Eight uncatalogued X-ray sources have been detected, however none of them is above the RASS limit or shows definitive signs of fading. Therefore, at the present time we cannot identify which, if any, is the afterglow. Details of these sources are given below: Source 1: RA (J2000.0): 187.8292 = 12:31:19.02 Dec (J2000.0): +9.0458 = +09:02:44.8 Error: 4.9 arcsec (radius, 90% conf.) Count-rate: (2.47 [+1.03, -0.83])e-3 ct s^-1 Distance: 720 arcsec from Swift/BAT position. Flux: (4.9 [+2.1, -1.6])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV) Source 2: RA (J2000.0): 187.9923 = 12:31:58.15 Dec (J2000.0): +9.0742 = +09:04:26.9 Error: 4.6 arcsec (radius, 90% conf.) Count-rate: (2.50 [+0.94, -0.77])e-3 ct s^-1 Distance: 175 arcsec from Swift/BAT position. Flux: (8.2 [+3.1, -2.5])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV) Source 3: RA (J2000.0): 187.8467 = 12:31:23.21 Dec (J2000.0): +9.1051 = +09:06:18.5 Error: 4.6 arcsec (radius, 90% conf.) Count-rate: (1.57 [+0.86, -0.65])e-3 ct s^-1 Distance: 693 arcsec from Swift/BAT position. Source 4: RA (J2000.0): 188.1338 = 12:32:32.10 Dec (J2000.0): +9.1148 = +09:06:53.1 Error: 6.0 arcsec (radius, 90% conf.) Count-rate: (1.89 [+0.85, -0.67])e-3 ct s^-1 Distance: 440 arcsec from Swift/BAT position. Flux: (5.9 [+2.6, -2.1])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV) Source 5: RA (J2000.0): 188.1013 = 12:32:24.32 Dec (J2000.0): +9.1072 = +09:06:26.1 Error: 6.1 arcsec (radius, 90% conf.) Count-rate: (1.49 [+0.76, -0.59])e-3 ct s^-1 Distance: 333 arcsec from Swift/BAT position. Flux: (5.4 [+2.7, -2.1])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV) Source 6: RA (J2000.0): 188.0148 = 12:32:3.54 Dec (J2000.0): +8.9310 = +08:55:51.5 Error: 5.2 arcsec (radius, 90% conf.) Count-rate: (2.02 [+0.86, -0.69])e-3 ct s^-1 Distance: 415 arcsec from Swift/BAT position. Source 7: RA (J2000.0): 187.9055 = 12:31:37.31 Dec (J2000.0): +8.9889 = +08:59:19.9 Error: 5.0 arcsec (radius, 90% conf.) Count-rate: (1.93 [+0.94, -0.73])e-3 ct s^-1 Distance: 493 arcsec from Swift/BAT position. Flux: (3.7 [+1.8, -1.4])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV) Source 9: RA (J2000.0): 187.9206 = 12:31:40.95 Dec (J2000.0): +9.0086 = +09:00:31.1 Error: 5.3 arcsec (radius, 90% conf.) Count-rate: (8.0 [+6.0, -4.2])e-4 ct s^-1 Distance: 417 arcsec from Swift/BAT position. A catalogued source was also detected. The results of the XRT-team automatic analysis of the XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/ToO_GRBs/00021407. This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29054 SUBJECT: GRB 201214B: Lowell Discovery Telescope optical observations DATE: 20/12/16 11:42:27 GMT FROM: Simone Dichiara at UMCP/NASA/GSFC S.Dichiara (UMD, NASA-GSFC), E. Troja (UMD, NASA-GSFC), P. Gatkine (Caltech), J.M. Durbak (UMD), S.B. Cenko (NASA-GSFC), B. O'Connor (GWU, UMD), A. Kutyrev (UMD, NASA-GSFC), S. Veilleux (UMD) report: We observed the field of the short GRB 201214B (Simpson et al., GCN 29045; Fermi GBM team, GCN 29039) using the Large Monolithic Imager (LMI) on the 4.3m Lowell Discovery Telescope (LDT) at Happy Jack, AZ. Observations started on December 15, at 11:21 UT (about 19.2 hours after the Swift trigger) using the SDSS r, i and z filters. Observations were taken at an airmass of about 1.3 and seeing of about 2.5". Our average sensitivity is i<23.5 AB mag. We do not detect any uncatalogued optical source at the position of the Swift/XRT sources reported by Tohuvavohu et al. (GCN 29052). By cross-correlating the refined BAT localization with the GLADE v2.3 galaxy catalog (Dalya et al. 2018), as described in Dichiara et al. (2020), we note the presence of a nearby lenticular galaxy (HyperLEDA-1359588 at ~280 Mpc) within the BAT error circle. Further observations are planned. We thank the staff of the Lowell Discovery Telescope for assistance with these observations. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29056 SUBJECT: GRB 201214B: MITSuME Akeno optical upper limits DATE: 20/12/16 13:52:03 GMT FROM: Noriatsu Nakamura at Tokyo Inst. of Tech. N. Nakamura, R. Hosokawa, K. L. Murata, R. Adachi, M. Niwano, F. Ogawa, N. Ito, S. Ogata, H. Takamatsu, H. Hara, Y. Yatsu, and N. Kawai (TokyoTech) report on behalf of the MITSuME collaboration: We observed the field of GRB 201214B (The Fermi GBM team, GCN #29039, P. Evans et al., GCN #29043, V. Lipunov et al., GCN #29044, D. Palmer et al., GCN #29045, B. Sbarufatti et al., GCN #29052 ) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation with a series of 60 sec exposures started at 2020-12-15 18:51:41 UT(28.8 hour after trigger). We did not find any new point sources within the enhanced Swift BAT circle (D. Palmer et al., GCN #29045) in all three bands. We obtained the 5-sigma limits of the stacked images as follows T0+[hour] MID-UT T-EXP[sec] 5-sigma limits ------------------------------------------------------------------------------------------------ 28.8 18:51:41 10380 g'>20.9,Rc>21.0,Ic>20.3 ------------------------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used the PS1 catalog for flux calibration. The magnitudes are expressed in the AB system. The images were processed in real-time through the MITSuME GPU reduction pipeline (Niwano et al., https://doi.org/10.1093/pasj/psaa091, https://arxiv.org/abs/2008.11486; https://github.com/MNiwano/Eclaire). //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29091 SUBJECT: GRB 201214A: 1.3m DFOT, optical upper limits DATE: 20/12/19 18:14:24 GMT FROM: Amit Kumar at ARIES, India Amit Kumar (ARIES), Rahul Gupta (ARIES), Neelam Panwar (ARIES), Dimple (ARIES), Ankur Ghosh (ARIES), Avinash Singh (ARIES), Amar Aryan (ARIES), Shashi B. Pandey (ARIES), and Kuntal Misra (ARIES) report: We observed the field of INTEGRAL-detected burst GRB 201214A (Mereghetti et al. GCN Circ. 29037; Evans et al., GCN 29036) with the 1.3m Devasthal Fast Optical Telescope (DFOT) located at Devasthal observatory of Aryabhatta Research Institute of Observational Sciences (ARIES), India. We observed a series of images ~16.6 hours after the burst in both R and I (300sx3 in each) filters (Johnson-Cousins) covering Swift XRT position (Kennea et al., GCN 29048). Preliminary photometry on the stacked images was performed and calibrated against the USNO-B1 catalog stars. We do not detect any OT candidate within the XRT position (see also Jelinek & Strobl GCN 29040). The upper limits in the stacked images are the following: DATE UT (start) Filter Exposure(sec) Frames Upper limit (mag) 2020-12-14 22:51:42 R 300 3 21.5 2020-12-14 23:27:40 I 300 3 21.0 This circular may be cited. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29092 SUBJECT: GRB 201214A: Swift-XRT afterglow detection DATE: 20/12/19 19:28:30 GMT FROM: Aaron Tohuvavohu at U Toronto J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), T. Sbarrato (INAF-OAB), P. D'Avanzo (INAF-OAB), M.G. Bernardini (INAF-OAB), B. Sbarufatti (PSU) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has conducted further observations of the field of the INTEGRAL-detected burst GRB 201214A (Mereghetti et al. GCN Circ. 29037). The observations now extend from T0+5.3 ks to T0+378.1 ks. The source previously reported by Kennea et al. (GCN Circ. 29048), "Source 2", is fading with 3-sigma significance, and is therefore likely the GRB afterglow. Using 2671 s of PC mode data and 4 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 170.92446, +33.86930 which is equivalent to: RA (J2000): 11h 23m 41.87s Dec(J2000): +33d 52' 09.5" with an uncertainty of 2.2 arcsec (radius, 90% confidence). This position is 36 arcsec from the INTEGRAL position. The source is fading with alpha >0.6. A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.7 (+0.9, -0.7). The best-fitting absorption column is 1.9 (+2.2, -1.6) x 10^21 cm^-2, in excess of the Galactic value of 2.4 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 2.6 x 10^-11 (2.6 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.9 (+2.2, -1.6) x 10^21 cm^-2 Galactic foreground: 2.4 x 10^20 cm^-2 Excess significance: 1.8 sigma Photon index: 2.7 (+0.9, -0.7) The results of the XRT-team automatic analysis of the likely afterglow are at https://www.swift.ac.uk/ToO_GRBs/00021406/Source2.php. The results of the full analysis of the XRT observations are available at https://www.swift.ac.uk/ToO_GRBs/00021406. This circular is an official product of the Swift-XRT team. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 29093 SUBJECT: GRB 201214A: TSHAO optical upper limit DATE: 20/12/19 22:01:24 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI), N. Pankov (HSE), I. Reva (FAPHI), V. Kim (FAPHI), A. Pozanenko (IKI) report on behalf of GRB IKI FuN: We observed the field of GRB 201214A (Mereghetti et al., GCN 29037) with Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting on Dec. 14 (UT) 18:15:39. We did not find any source in the enhanced XRT position of an afterglow (Kennea et al., GCN 29092), see also (Jelinek et. al GCN 29040; Kumar et. al GCN 29091). Preliminary photometry of the filed is following. Date UT start t-T0 Filter Exp. OT Err. UL(3 sigma) (mid, days) (s) 2020-12-14 18:15:39 0.50959 R 22*90 n/d n/d 21.1 The photometry is based on nearby USNO-B1.0 stars.