GRB200122A

This page lists all entries on GRB200122A in GRBweb

Summary IPN Swift GCN 26844 GCN 26845 GCN 26846 GCN 26852 GCN 26853 GCN 26854 GCN 26859 GCN 26860 GCN 26861 GCN 26862 GCN 26864 GCN 26865 GCN 26869 GCN 26870 GCN 26871 GCN 26873

Summary table
Variable Value Source
T0 1:41:00 UTC GCN_circulars,Swift Det
ra 210.0180° Swift
decl 27.5487° Swift
pos_error 1.81e-04° Swift
T90 174.96 s Swift
T90_start 1:41:00 UTC Swift
fluence 1.10e-05 erg/cm² Swift
T100 174.96 s
GBM_located False
mjd 58870.07013888889 GCN_circulars,Swift Det
IPN table
GRB_name GRB200122A
ra 209.9792°
decl 27.5667°
pos_error 5.00e-02°
Swift table
GRB_name GRB200122A
t_trigger 1:41:00 UTC
ra 210.0180°
decl 27.5487°
pos_error 1.81e-04°
T90 174.96 s
fluence 1.10e-05 erg/cm²
GCN 26844 table
GRB_name GRB200122A
GCN_number 26844
Detection_method Swift Det
t_trigger 1:41:00 UTC
ra 209.9810°
decl 27.5660°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26844 SUBJECT: GRB 200122A: Swift detection of a burst DATE: 20/01/22 02:08:43 GMT FROM: David Palmer at LANL E. Sonbas (Adiyaman Univ.), C. Gronwall (PSU), J.D. Gropp (PSU), J. A. Kennea (PSU), N. J. Klingler (PSU), F. E. Marshall (NASA/GSFC), M. J. Moss (GWU), K. L. Page (U Leicester), D. M. Palmer (LANL), M. H. Siegel (PSU) and A. Tohuvavohu (U Toronto) report on behalf of the Neil Gehrels Swift Observatory Team: At 01:41:00 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 200122A (trigger=950330). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 209.981, +27.566 which is RA(J2000) = 13h 59m 55s Dec(J2000) = +27d 33' 56" 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 50 sec. The peak count rate was ~11000 counts/sec (15-350 keV), at ~10 sec after the trigger. The XRT began observing the field at 01:42:12.5 UT, 72.2 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 210.01625, 27.54988 which is equivalent to: RA(J2000) = 14h 00m 03.90s Dec(J2000) = +27d 32' 59.6" with an uncertainty of 3.5 arcseconds (radius, 90% containment). This location is 126 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 in excess of the Galactic value (1.54 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 1 (+0.55/-0.45) x 10^22 cm^-2 (90% confidence). The initial flux in the 2.5 s image was 9.13e-10 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 81 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03. Burst Advocate for this burst is E. Sonbas (edasonbas AT yahoo.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/)
GCN 26845 table
GRB_name GRB200122A
GCN_number 26845
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 26845 SUBJECT: Swift GRB 200122A: Global MASTER-Net observations report DATE: 20/01/22 04:18:40 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), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), 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 Swift GRB 200122A ( E. Sonbas et al., GCN 26844) errorbox 8770 sec after trigger time at 2020-01-22 04:07:10 UT, with upper limit up to 19.4 mag. The observations began at zenith distance = 38 deg. The sun altitude is -49.9 deg. The galactic latitude b = 74 deg., longitude l = 38 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1266128 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 8860 | MASTER-IAC | C | 180 | 19.4 | 8860 | MASTER-IAC | C | 180 | 19.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
GCN 26846 table
GRB_name GRB200122A
GCN_number 26846
Detection_method Swift-XRT Det
ra 210.0181°
decl 27.5488°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26846 SUBJECT: GRB 200122A: Enhanced Swift-XRT position DATE: 20/01/22 04:59:55 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 1627 s of XRT Photon Counting mode data and 1 UVOT images for GRB 200122A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 210.01807, +27.54884 which is equivalent to: RA (J2000): 14h 00m 4.34s Dec (J2000): +27d 32' 55.8" with an uncertainty of 1.7 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 26852 table
GRB_name GRB200122A
GCN_number 26852
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 26852 SUBJECT: GRB 200122A: Swift-XRT refined Analysis DATE: 20/01/22 13:20:52 GMT FROM: Phil Evans at U of Leicester J. D. Gropp (PSU), A. Tohuvavohu (U. Toronto), J.A. Kennea (PSU), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB) and E. Sonbas report on behalf of the Swift-XRT team: We have analysed 6.4 ks of XRT data for GRB 200122A (Sonbas et al. GCN Circ. 26844), from 63 s to 35.2 ks after the BAT trigger. The data comprise 296 s in Windowed Timing (WT) mode (the first 8 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 26846). The late-time light curve (from T0+5.3 ks) can be modelled with a power-law decay with a decay index of alpha=0.67 (+0.11, -0.10). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.84 (+/-0.05). The best-fitting absorption column is 1.44 (+/-0.07) x 10^22 cm^-2, in excess of the Galactic value of 1.5 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 2.25 (+/-0.14) and a best-fitting absorption column of 1.70 (+0.18, -0.17) x 10^22 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 5.1 x 10^-11 (1.3 x 10^-10) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.70 (+0.18, -0.17) x 10^22 cm^-2 Galactic foreground: 1.5 x 10^20 cm^-2 Excess significance: 16.2 sigma Photon index: 2.25 (+/-0.14) If the light curve continues to decay with a power-law decay index of 0.67, the count rate at T+24 hours will be 0.11 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.7 x 10^-12 (1.5 x 10^-11) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00950330. This circular is an official product of the Swift-XRT team.
GCN 26853 table
GRB_name GRB200122A
GCN_number 26853
Detection_method Optical
ra 210.0181°
decl 27.5488°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26853 SUBJECT: GRB 200122A: GOTO non-detection of optical afterglow DATE: 20/01/22 13:31:25 GMT FROM: Joe Lyman at U of Warwick K.Wiersema (1); D.Steeghs (1); K.Ulaczyk (1); J.Lyman (1); R.Cutter (1); T.Killestein (1); M.Dyer (3); M.Kennedy (10); G.Ramsay (5); D.K.Galloway (2); V.Dhillon (3); P.O’Brien (4); D.Pollacco (1); E.Thrane (2); S.Poshyachinda (6); S.Mattila (7); L.Nuttall (8); E.Palle (9); A.Levan (1); T.Marsh (1); R.West (1); E.Stanway (1); B.Gompertz (1); J.McCormac (1); P.Strom (1); K.Ackley (2); Y.-L.Mong (2); A.Casey (2); M.Brown (2); B.Muller (2); J.Mullaney (3); E.Daw (3); S.Littlefair (3); J.Maund (3); L.Makrygianni (3); R.Starling (4); R.Eyles (4); S.Tooke (4); S.Aukkaravittayapun (6); U.Sawangwit (6); S.Awiphan (6); D.Mkrtichian (6); P.Irawati (6); R.Kotak (7); T.Heikkila (7); E.Rol (2) (1) Warwick University, (2) Monash University, (3) University of Sheffield, (4) University of Leicester, (5) Armagh Observatory & Planetarium, (6) National Astronomical Research Institute of Thailand, (7) University of Turku, (8) University of Portsmouth, (9) Instituto de Astrofisica de Canarias), (10) Univ. of Manchester. report on behalf of the GOTO collaboration: We carried out observations with the Gravitational-wave Optical Transient Observer (GOTO), in response to GRB 200122A (Sonbas et al. 2020; GCN #26844). We made a series of 3 x 60 s exposures using our wide L-band filter (400-700 nm) covering the Swift XRT position RA, Dec = 210.01807, +27.54884 (Osborne et al. 2020; GCN #26846), with midtime 02:35:49 UT on 22 January 2020 (3289 seconds after trigger). Using a difference imaging analysis with recent survey observations of the same pointings as reference, we identify no viable afterglow candidate. Our 5-sigma detection limit was g=19.5 mag based on PS1 catalogue calibrators. GOTO is operated at the La Palma observing facilities of the University of Warwick on behalf of a consortium including the University of Warwick, Monash University, Armagh Observatory, the University of Leicester, the University of Sheffield, the National Astronomical Research Institute of Thailand (NARIT) and the Instituto de Astrofisica de Canarias (IAC) (https://goto-observatory.org)
GCN 26854 table
GRB_name GRB200122A
GCN_number 26854
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 26854 SUBJECT: GRB 200122A: FRAM-ORM optical limit DATE: 20/01/22 15:58:16 GMT FROM: Martin Jelinek at Astro.Inst-AVCR,Ondrejov Martin Jelinek, Jan Strobl (ASU CAS Ondrejov, CZ), Martin Masek, Petr Janecek, Sergey Karpov, 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 alert of GRB200122A (Sonbas et al, GCNC 26844), obtaining a series of 20s unfiltered images starting at 01:41:33.0UT, i.e. 32.6s post trigger. We do not detect any new source in comparison to USNO-B2.0 catalog neither in single images (3-sigma limit R>~17.4) nor in a combined 40x20s frame (mean exp time 551s post trigger, 3-sigma limit R>~19.3).
GCN 26859 table
GRB_name GRB200122A
GCN_number 26859
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 26859 SUBJECT: GRB 200122A: Swift/UVOT Upper Limits DATE: 20/01/22 23:29:02 GMT FROM: Mike Siegel at PSU/Swift MOC A. Belles (PSU) and E. Sonbas (Adiyaman Univ.) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 200122A 82 s after the BAT trigger (Sonbas et al., GCN Circ. 26844). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 26846) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white_fc 82 232 147 >21.1 u_fc 294 544 246 >20.9 white 82 5672 627 >21.7 v 624 6083 352 >19.4 b 550 5467 333 >20.6 u 294 1844 363 >20.7 w1 674 1472 58 >20.1 m2 6088 6276 186 >19.5 w2 5678 5878 197 >20.3 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).
GCN 26860 table
GRB_name GRB200122A
GCN_number 26860
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 26860 SUBJECT: GRB 200122A: Xinglong-2.16m optical upper limit DATE: 20/01/23 01:24:01 GMT FROM: Dong Xu at NAOC/CAS X. Liu, D. Xu, H.J. Wang, Z.P. Zhu, B.Y. Yu (NAOC) report: We observed the field of GRB 200122A (Sonbas et al., GCN 26844) using the Xinglong-2.16m telescope equipped with the BFOSC camera. Observations started at 22:14:52 UT on 2020-01-22 (i.e., 20.57 h after the BAT trigger), and 5x200 s R-band frames have been obtained. No optical afterglow is detected at the Swift XRT's position in our stacked image, down to a limiting magnitude of m(R) ~ 22.0, calibrated with the nearby PanSTARRS field.
GCN 26861 table
GRB_name GRB200122A
GCN_number 26861
Detection_method Swift-BAT Det
ra 210.0100°
decl 27.5480°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26861 SUBJECT: GRB 200122A: Swift-BAT refined analysis DATE: 20/01/23 02:01:53 GMT FROM: Amy Lien at GSFC A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), H. A. Krimm (NSF), S. Laha (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), E. Sonbas (Adiyaman Univ.), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the data set from T-240 to T+302 sec from the recent telemetry downlink, we report further analysis of BAT GRB 200122A (trigger #950330) (Sonbas et al., GCN Circ. 26844). The BAT ground-calculated position is RA, Dec = 210.010, 27.548 deg which is RA(J2000) = 14h 00m 02.4s Dec(J2000) = +27d 32' 52.2" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 78%. The mask-weighted light curve shows a multi-peaked structure that starts from ~T-10 s and ends at ~T+200 s. The main emission interval is around T-10 s to T+50 s, with the highest peak occurs at ~T+10 s. In addition, there is a weak pulse around ~T+192 s. T90 (15-350 keV) is 174.96 +- 14.54 sec (estimated error including systematics). The time-averaged spectrum from T-8.572 to T+201.832 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.60 +- 0.05. The fluence in the 15-150 keV band is 1.1 +- 0.03 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+10.18 sec in the 15-150 keV band is 9.1 +- 0.4 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/950330/BA/
GCN 26862 table
GRB_name GRB200122A
GCN_number 26862
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 26862 SUBJECT: GRB 200122A: RATIR Optical Observations DATE: 20/01/23 04:14:06 GMT FROM: Alan M Watson at UNAM Alan M. Watson (UNAM), Nat Butler (ASU), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (U. Wash.), and Vicki Toy (UMD) report: We observed the field of GRB 200122A (Sonbas et al., GCN Circ. 26844) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir from 2020/01 22.35 to 2020/01 22.56 UTC (6.67 to 11.76 hours after the BAT trigger), obtaining a total of 3.76 hours exposure in the r and i bands. For a source within the Swift-XRT enhanced error circle (Osborne et al., GCN Circ. 26846), in comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following 3-sigma upper limits: r > 23.72 i > 23.42 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN 26864 table
GRB_name GRB200122A
GCN_number 26864
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 26864 SUBJECT: GRB 200122A: MITSuME Akeno optical upper limits DATE: 20/01/23 06:48:06 GMT FROM: Adachi Ryo at Tokyo Institute of Tech R. Adachi, K. L. Murata, M. Niwano, F. Ogawa, R. Hosokawa, N. Nakamura, S. Toma, M. Oeda, K. Shiraishi, K. Iida, Y. Yatsu, and N. Kawai(TokyoTech) report on behalf of the MITSuME collaboration: We searched for the optical counterpart of GRB 200122A (E. Sonbas et al.,GCN Circular #26844) 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 started on 14:39:41 UT. Then the observation stopped due to the bad weather and started again at 16:20:20 UT. We did not find any new point sources within the Swift-XRT error circle (J.P. Osborne et al., GCN Circular #26846) in all three bands. We obtained the 5-sigma limits as follows. T0+[hour] MID-UT T-EXP[sec] 5-sigma limits ------------------------------------------------------------------------------------------------ 14.66 17:41:47 7140 g'>18.6,Rc>18.8,Ic>18.1 ------------------------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used Pan-STARRS DR1 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. ,in prep; https://github.com/MNiwano/Eclair)
GCN 26865 table
GRB_name GRB200122A
GCN_number 26865
Detection_method Konus-Wind Det
t_trigger 1:41:06.859 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 26865 SUBJECT: Konus-Wind observation of GRB 200122A DATE: 20/01/23 12:24:17 GMT FROM: Dmitry Frederiks at Ioffe Institute D. Frederiks, S. Golenetskii, R.Aptekar, A.Lysenko, A. Ridnaia, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The long GRB 200122A (Swift detection: Sonbas et al., GCN 26844) triggered Konus-Wind (KW) at T0=6066.859 s UT (01:41:06.859). The burst light curve shows a multi-peaked structure in the interval from ~T0-12 s to ~T0+26 s. The total duration of the burst is ~40 s. The emission is seen up to ~10 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB200122_T06066/ As observed by Konus-Wind, the burst had a fluence of (2.0 ± 0.3)x10^-5 erg/cm^2 and a 64-ms peak energy flux, measured from T0+6.080, of (5.7 ± 0.7)x10^-6 erg/cm^2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+24.832 s) is best fit in the 20 keV - 20 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -1.00 (-0.13,+0.16), the high energy photon index beta = -2.81 (-0.94,+0.32), the peak energy Ep = 148 (-16,+15) keV, chi2 = 83/96 dof. The spectrum near the peak count rate (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.88 (-0.16,+0.19), the high energy photon index beta = -2.37 (-0.39,+0.16), the peak energy Ep = 168 (-22,+31) keV, chi2 = 83/96 dof. All the quoted errors are estimated at the 68% confidence level. All the presented results are preliminary.
GCN 26869 table
GRB_name GRB200122A
GCN_number 26869
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 26869 SUBJECT: GRB 200122A: Mondy optical upper limit DATE: 20/01/24 13:19:45 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-GRB-FuN: We observed the field of GRB 200122A (Sonbas et al. GCN 26844) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Jan. 22 (UT) 20:23:25. We do not detect any optical object in the Enhanced Swift-XRT position (Osborne et al. GCN 26846). Preliminary photometry of the field is following. Date UT start t-T0 Filter Exp. OT UL(3sigma) (mid, days) (s) 2020-01-22 20:23:25 0.79876 R 30*120 n/d 23.3 Photometry is based on the USNO-B2.0 nearby stars USNO-B1.0_id R2 1175-0271901 16.74 1174-0271881 19.69
GCN 26870 table
GRB_name GRB200122A
GCN_number 26870
Detection_method Optical
ra 210.0181°
decl 2754884.0000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26870 SUBJECT: GRB 200122A: Optical upper limit DATE: 20/01/24 14:50:35 GMT FROM: Dimple Panchal at ARIES, India Dimple, R. Gupta, V.K. Jha, A. Aryan, A. Ghosh, K. Misra, A. Kumar, and S.B. Pandey report: We carried out observation of GRB 200122A (Sonbas et al., GCN Circ. 26844) with the 1.3m Devasthal Fast Optical Telescope (DFOT) at Devasthal observatory of Aryabhatta Research Institute of observational sciencES (ARIES), India. The observation was started on 2020-01-23 at 10:29:41 UT. We observed a series of 3 x 300s exposures using R filter (Johnson-Cousins) covering Swift XRT enhanced position RA, Dec = 210.01807,+2754884 (Osborne et al., GCN Circ. 26846). We do not detect any new optical source within the Swift XRT enhanced error circle neither in single images nor in the combined image. We obtained the 3-sigma upper limit as follows T_start-T0 (hours) Start_UT End_UT Filter 3-sigma upper limit ------------------------------------------------------------------------------------------------- 8.8 10:29:41 10:44:41 R >21.13 ------------------------------------------------------------------------------------------------- Photometry is done based on USNO-B1.0 catalog. This magnitude is not corrected for Galactic extinction in the direction of the GRB.
GCN 26871 table
GRB_name GRB200122A
GCN_number 26871
Detection_method AstroSat CZTI
Circular_text TITLE: GCN CIRCULAR NUMBER: 26871 SUBJECT: GRB 200122A: AstroSat CZTI detection DATE: 20/01/24 14:51:04 GMT FROM: Ramkrishna Gaikwad at IUCAA/AstroSat R. Gaikwad, S. Gupta, V. Sharma and D. Bhattacharya (IUCAA), V. Bhalerao (IIT-B), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration: Analysis of AstroSat CZTI data showed the detection of a long GRB 200122A, which was also detected by Swift (Sonbas E. et al., GCN #26844), Global MASTER-Net (Lipunov V. et al., GCN #26845), Swift-XRT (Osborne J. et al., GCN #26846), GOTO (Wiersema K. et al., GCN #26853), Swift/UVOT (Belles A. et al., GCN #26859), Xinglong-2.16m (Liu X. et al., GCN #26860), RATIR (Watson A. et al., GCN #26862), MITSuME Akeno ( Adachi R. et al., GCN #26864) and Konus-Wind (Frederiks D. et al., GCN #26864). The source was clearly detected in the 40-200 keV energy range. The light curve showed multiple peak of emissions with the strongest peak at 2020-01-22 01:41:00.0 UT. The measured peak count rate associated with the burst is 74 cts/s above the background in the combined data of four quadrants, with a total of 5463 cts. The local mean background count rate was 664 cts/s. Using cumulative rates, we measure a T90 of 39.3 s. It was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range. CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.
GCN 26873 table
GRB_name GRB200122A
GCN_number 26873
Detection_method correction
ra 210.0181°
decl 27.5488°
Circular_text TITLE: GCN CIRCULAR NUMBER: 26873 SUBJECT: GRB 200122A: Optical upper limit: correction to the GCN circ. 26870 DATE: 20/01/24 18:07:16 GMT FROM: Dimple Panchal at ARIES, India Dimple, R. Gupta, V. K. Jha, A. Aryan, A. Ghosh, K. Misra, A. Kumar, and S. B. Pandey report: We carried out observation of GRB 200122A (Sonbas et al., GCN Circ. 26844) with the 1.3m Devasthal Fast Optical Telescope (DFOT) at the Devasthal observatory of Aryabhatta Research Institute of observational sciencES (ARIES), India. The observation was started on 2020-01-22 at 23:34:50 UTC. We observed a series of 3 x 300s exposures using R filter (Johnson-Cousins) covering Swift XRT enhanced position RA, Dec = 210.01807, +27.54884 (Osborne et al., GCN Circ. 26846). We do not detect any new optical source within the Swift XRT enhanced error circle neither in single image nor in the combined image. We obtained the 3-sigma upper limit as follows T_start-T0 (hours) Start_UTC End_UTC Filter 3-sigma upper limit ------------------------------------------------------------------------------------------------------- 21.9 23:34:50 23:49:50 R >21.13 ------------------------------------------------------------------------------------------------------- Photometry is done based on USNO-B1.0 catalog. This magnitude is not corrected for Galactic extinction in the direction of the GRB.