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This page lists all entries on GRB220514B in GRBweb

Summary IPN GCN 32046 GCN 32048 GCN 32053 GCN 32056

Summary table
Variable	Value	Source
T0	23:24:21 UTC	GCN_circulars,Konus-Wind Det
ra	245.7875°	IPN
decl	61.6500°	IPN
pos_error	1.00e+00°	IPN
GBM_located	False
mjd	59713.97524305555	GCN_circulars,Konus-Wind Det

IPN table
GRB_name	GRB220514B
ra	245.7875°
decl	61.6500°
pos_error	1.00e+00°

GCN 32046 table
GRB_name	GRB220514B
GCN_number	32046
Detection_method	MAXI Det
t_trigger	23:24:21 UTC
ra	246.8640°
decl	61.4400°
Circular_text	TITLE: GCN CIRCULAR NUMBER: 32046 SUBJECT: GRB 220514B: MAXI/GSC detection DATE: 22/05/15 00:43:04 GMT FROM: Yuta Kawakubo at Louisiana State U./CALET Y. Kawakubo (LSU), M. Serino (AGU), H. Negoro, M. Nakajima, K. Kobayashi, M. Tanaka, Y. Soejima (Nihon U.), T. Mihara, T. Kawamuro, S. Yamada, T. Tamagawa, M. Matsuoka (RIKEN), T. Sakamoto, S. Sugita, H. Hiramatsu, A. Yoshida (AGU), Y. Tsuboi, W. Iwakiri, J. Kohara (Chuo U.), M. Shidatsu, M. Iwasaki (Ehime U.), N. Kawai, M. Niwano, R. Hosokawa, Y. Imai, N. Ito, Y. Takamatsu (Tokyo Tech), S. Nakahira, S. Ueno, H. Tomida, M. Ishikawa, M. Tominaga, T. Nagatsuka, T. Kurihara (JAXA), Y. Ueda, S. Ogawa, K. Setoguchi, T. Yoshitake, K. Inaba (Kyoto U.), H. Tsunemi (Osaka U.), M. Yamauchi, Y. Nonaka, T. Sato, R. Hatsuda, R. Fukuoka (Miyazaki U.), K. Yamaoka (Nagoya U.), M. Sugizaki (NAOC) report on behalf of the MAXI team: The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 23:24:21 UT on 2022 May 14. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (246.864 deg, 61.440 deg) = (16 27 27, +61 26 23) (J2000) with a statistical 90% C.L. elliptical error region with long and short radii of 0.26 deg and 0.24 deg, respectively. The roll angle of long axis from the north direction is 101.0 deg counterclockwise. There is an additional systematic uncertainty of 0.1 deg (90% containment radius). Without assumptions on the source constancy, we obtain a rectangular error box for the transient source with the following corners: (246.141, 61.757) deg = (16 24 33, +61 45 25) (J2000) (245.940, 61.286) deg = (16 23 45, +61 17 09) (J2000) (248.119, 61.055) deg = (16 32 28, +61 03 17) (J2000) (248.352, 61.523) deg = (16 33 24, +61 31 22) (J2000) The X-ray flux averaged over the scan was 168 +- 26 mCrab (4.0-10.0keV, 1 sigma error). There was no significant excess flux in the previous transit at 05/14 21:51 UT with an upper limit of 20 mCrab.

GCN 32048 table
GRB_name	GRB220514B
GCN_number	32048
Detection_method	Swift Other
Circular_text	TITLE: GCN CIRCULAR NUMBER: 32048 SUBJECT: GRB 220514B: Tiled Swift observations DATE: 22/05/15 15:30:28 GMT FROM: Phil Evans at U of Leicester P. A. Evans (U. Leicester) reports on behalf of the Swift team: Swift has initiated a series of observations, tiled on the sky, of the MAXI GRB 220514B. Automated analysis of the XRT data will be presented online at http://www.swift.ac.uk/xrt_products/TILED_GRB00106 Any uncatalogued X-ray sources detected in this analysis will be reported on this website and via GCN COUNTERPART notices. The probability of finding serendipitous sources, unrelated to the MAXI event is high: 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.

GCN 32053 table
GRB_name	GRB220514B
GCN_number	32053
Detection_method	Swift-XRT Other
Circular_text	TITLE: GCN CIRCULAR NUMBER: 32053 SUBJECT: GRB 220514B: Swift-XRT observations DATE: 22/05/16 10:17:35 GMT FROM: Phil Evans at U of Leicester A. D'Ai (INAF-IASFPA), J. D. Gropp (PSU), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A. Melandri (INAF-OAB), T. Sbarrato (INAF-OAB) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the MAXI-detected burst GRB 220514B (Y. Kawakubo et al. GCN Circ. 32046) in a series of observations tiled on the sky. The total exposure time is 1.9 ks, distributed over 4 tiles; the maximum exposure at a single sky location was 1.0 ks. The data were collected between T0+57.9 ks and T0+60.1 ks, and are entirely in Photon Counting (PC) mode. No X-ray sources have been detected. The 3-sigma upper limit in the field (not including the regions where the tiles overlap) ranges from ~0.02 to ~0.04 ct s^-1, corresponding to a 0.3-10 keV observed flux of 6.7e-13 to 1.4e-12 erg cm^-2 s^-1 (assuming a typical GRB spectrum). The results of the XRT-team automatic analysis of the tiled XRT observations, including a position-specific upper limit calculator, are available at https://www.swift.ac.uk/xrt_products/TILED_GRB00106. This circular is an official product of the Swift-XRT team.

GCN 32056 table
GRB_name	GRB220514B
GCN_number	32056
Detection_method	Konus-Wind Det
t_trigger	23:24:21 UTC
Circular_text	TITLE: GCN CIRCULAR NUMBER: 32056 SUBJECT: Konus-Wind detection of GRB 220514B DATE: 22/05/17 12:09:52 GMT FROM: Anna Ridnaia at Ioffe Institute A.Ridnaia, D. Frederiks, A.Lysenko, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The long GRB 220514B (MAXI/GSC detection: Kawakubo et al., GCN Circ. 32046) was detected by Konus-Wind (KW) in the waiting mode. A Bayesian block analysis of the KW waiting mode data in the 20-1500 keV band reveals a ~10 sigma count rate increase over background in the interval from ~T0-26 s to ~T0+74 s, where T0 = T0(MAXI) = 84261 s UT (23:24:21). The K-W light curve of this burst is available at http://www.ioffe.ru/LEA/GRBs/GRB220514B/ As observed by Konus-Wind, the burst had a fluence of 6.59(-1.19,+1.61)x10^-6 erg/cm2 and a 2.944-s peak flux, measured from ~T0-14.4 s, of 1.54(-0.43,+0.50)x10^-7 erg/cm2/s (both in the 20 - 1500 keV energy range). Modeling the K-W 3-channel time-integrated spectrum (from ~T0-26.2 s to ~T0+73.9 s) by a power law with exponential cutoff (CPL) model dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) yields alpha = -0.82(-0.21,+0.33) and Ep = 263(-65,+112) keV. All the quoted errors are estimated at the 1 sigma confidence level. All the presented results are preliminary.