May 2026 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 42880] GRB 260531C: Fermi GBM Final Localization Correction
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44751 SUBJECT: GRB 260531C: Fermi GBM Final Localization Correction DATE: 26/05/31 23:57:21 GMT FROM: rhamburg(a)usra.edu The Fermi GBM team reports the detection of a likely SHORT GRB. "At 21:14:58.91 UT on 31 May 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260531C (trigger 801954903/260531885). This trigger was initially classified as Below Horizon by the flight software, but is in fact a GRB. The on-ground calculated location, using the Fermi GBM trigger data, is RA = 40.6, Dec = 36.2 (J2000 degrees, equivalent to J2000 2h 42m, +36d 12'), with a statistical uncertainty of 11.6 degrees. The angle from the Fermi LAT boresight is 82 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531885/… The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531885/… The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531885/…" View this GCN Circular online at https://gcn.nasa.gov/circulars/44751. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42879] Fermi Gamma-ray Burst Monitor trigger 801900520/260531256 is not a GRB
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44750 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 801900520/260531256 is not a GRB DATE: 26/05/31 21:26:24 GMT FROM: Eva M. Palafox at INAOE <eva.palafox(a)gmail.com> B. Mailyan (Florida Tech), E. Palafox (INAOE, Mexico) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 801900520/260531256 at 06:08:35.57 UT on 31 May 2026, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to particle activity." View this GCN Circular online at https://gcn.nasa.gov/circulars/44750. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42878] AT2026nik: EP-FXT X-ray counterpart
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44749 SUBJECT: AT2026nik: EP-FXT X-ray counterpart DATE: 26/05/31 21:01:15 GMT FROM: Jonathan Quirola at Radboud University <jaquirola1990(a)gmail.com> J. Quirola-Vasquez (Radboud), P. G. Jonker (Radboud), A. A. Chrimes (ESA/ESTEC), A. J. Levan (Radboud & Warwick), A Inkenhaag (Bath), D. Coppejans (Warwick), P. Groot (Radboud/UCT/SAAO): We observed the field of AT2026nik (AstroNotes: 2026-151, 2026-152) with the Follow-up X-ray Telescope (FXT) aboard the Einstein Probe mission. The observation was carried out from 2026 May 29 18:45:25.9 UT to 19:34:24.9 UT, with a total exposure time of 2.9 ks using Modules A and B. After stacking the data from both modules, we detected an X-ray source with a significance of S/N ≈ 3.4 at the position (with an uncertainty of 20"): RA = 11:22:52.6 Dec = -06:13:22.2 No X-ray source is reported at this position in the ROSAT, eROSITA, Swift-XRT, XMM-Newton, or Chandra catalogs, according to the STONKS Multi-Mission X-ray Catalog (Quintin et al. 2024). The position of the detected X-ray source is consistent with that of AT2026nik, suggesting that it is the X-ray counterpart of the transient. The source has a net count rate of 2.57e-3 counts/s. Assuming a Galactic hydrogen column density of N_H = 4e20 cm-2 and a power-law spectrum with photon index Γ = 1.5, we estimate an absorbed X-ray flux of approximately 6.1e-14 erg/cm2/s. AT2026nik exhibited a blue, nearly featureless optical spectrum (P. Pessi and J. Wise; AstroNotes: 2026-151, 2026-152), with a tentative detection of the interstellar Mg II absorption doublet at z = 0.182. Assuming this redshift, the inferred X-ray luminosity is approximately L_X~5.3e42 erg/s, consistent with that observed in AT2018cow and other LFBOTs at a similar epoch (e.g., Margutti et al. 2019). The blue optical spectrum and the newly detected X-ray counterpart support the classification of AT2026nik as a luminous fast blue optical transient (LFBOT). We thank the Einstein Probe staff for their execution of these observations. View this GCN Circular online at https://gcn.nasa.gov/circulars/44749. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42877] Fermi trigger No 801900520: Global MASTER-Net observations report
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44748 SUBJECT: Fermi trigger No 801900520: Global MASTER-Net observations report DATE: 26/05/31 18:30:43 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov(a)xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), M. Segura, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB260531.26 (trigger No 801900520,19h 13m 33.60s , -54d 13m 12.0s, R=3.3) errorbox 2033 sec after notice time and 2082 sec after trigger time at 2026-05-31 06:43:18 UT, with upper limit up to 19.2 mag. The observations began at zenith distance = 21 deg. The sun altitude is -59.5 deg. MASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB260531.26 errorbox 42758 sec after notice time and 42807 sec after trigger time at 2026-05-31 18:02:03 UT, with upper limit up to 16.5 mag. The observations began at zenith distance = 76 deg. The sun altitude is -29.8 deg. The galactic latitude b = -25 deg., longitude l = 343 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3350277 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 2113 | 2026-05-31 06:43:18 | MASTER-OAFA | (19h 11m 50.85s , -51d 54m 44.5s) | C | 60 | 18.3 | 2173 | 2026-05-31 06:43:18 | MASTER-OAFA | (19h 11m 50.85s , -51d 54m 44.5s) | C | 180 | 18.7 | Coadd 2191 | 2026-05-31 06:44:36 | MASTER-OAFA | (19h 24m 42.46s , -51d 56m 13.7s) | C | 60 | 18.1 | 2251 | 2026-05-31 06:44:36 | MASTER-OAFA | (19h 24m 42.47s , -51d 56m 13.7s) | C | 180 | 18.6 | Coadd 2272 | 2026-05-31 06:45:57 | MASTER-OAFA | (19h 24m 42.83s , -51d 55m 12.0s) | C | 60 | 18.0 | 2351 | 2026-05-31 06:47:16 | MASTER-OAFA | (19h 11m 51.26s , -51d 55m 16.0s) | C | 60 | 17.9 | 2427 | 2026-05-31 06:48:32 | MASTER-OAFA | (19h 24m 43.21s , -51d 57m 07.7s) | C | 60 | 18.0 | 2503 | 2026-05-31 06:49:48 | MASTER-OAFA | (19h 24m 50.56s , -51d 56m 49.6s) | C | 60 | 18.1 | 2563 | 2026-05-31 06:49:48 | MASTER-OAFA | (19h 24m 50.56s , -51d 56m 49.6s) | C | 180 | 18.9 | Coadd 2571 | 2026-05-31 06:50:56 | MASTER-OAFA | (19h 11m 49.05s , -51d 54m 34.6s) | C | 60 | 18.1 | 2650 | 2026-05-31 06:52:15 | MASTER-OAFA | (18h 46m 18.02s , -53d 46m 35.9s) | C | 60 | 18.1 | 2710 | 2026-05-31 06:52:15 | MASTER-OAFA | (18h 46m 18.03s , -53d 46m 35.9s) | C | 180 | 18.8 | Coadd 2724 | 2026-05-31 06:53:29 | MASTER-OAFA | (18h 46m 11.08s , -53d 47m 17.1s) | C | 60 | 18.2 | 2802 | 2026-05-31 06:54:48 | MASTER-OAFA | (18h 59m 43.87s , -53d 47m 10.3s) | C | 60 | 18.2 | 2862 | 2026-05-31 06:54:48 | MASTER-OAFA | (18h 59m 43.87s , -53d 47m 10.3s) | C | 180 | 18.8 | Coadd 2882 | 2026-05-31 06:56:07 | MASTER-OAFA | (18h 59m 50.56s , -53d 48m 08.5s) | C | 60 | 18.1 | 2965 | 2026-05-31 06:57:30 | MASTER-OAFA | (18h 46m 13.09s , -53d 48m 10.7s) | C | 60 | 18.1 | 3042 | 2026-05-31 06:58:47 | MASTER-OAFA | (18h 59m 51.14s , -53d 48m 44.6s) | C | 60 | 18.2 | 3120 | 2026-05-31 07:00:05 | MASTER-OAFA | (18h 46m 15.86s , -53d 46m 11.8s) | C | 60 | 18.0 | 3180 | 2026-05-31 07:00:05 | MASTER-OAFA | (18h 46m 15.86s , -53d 46m 11.8s) | C | 180 | 18.6 | Coadd 3199 | 2026-05-31 07:01:24 | MASTER-OAFA | (18h 46m 17.98s , -53d 46m 06.1s) | C | 60 | 18.0 | 3290 | 2026-05-31 07:02:55 | MASTER-OAFA | (18h 46m 13.31s , -53d 47m 01.3s) | C | 60 | 18.0 | 3370 | 2026-05-31 07:04:15 | MASTER-OAFA | (18h 59m 44.89s , -53d 46m 54.0s) | C | 60 | 17.8 | 3430 | 2026-05-31 07:04:15 | MASTER-OAFA | (18h 59m 44.88s , -53d 46m 54.0s) | C | 180 | 18.3 | Coadd 3450 | 2026-05-31 07:05:35 | MASTER-OAFA | (18h 59m 52.98s , -53d 47m 52.6s) | C | 60 | 17.6 | 3530 | 2026-05-31 07:06:55 | MASTER-OAFA | (18h 46m 14.94s , -53d 47m 55.3s) | C | 60 | 17.6 | 3590 | 2026-05-31 07:06:55 | MASTER-OAFA | (18h 46m 14.94s , -53d 47m 55.3s) | C | 180 | 18.0 | Coadd 3607 | 2026-05-31 07:08:12 | MASTER-OAFA | (18h 59m 52.02s , -53d 48m 41.0s) | C | 60 | 17.8 | 3684 | 2026-05-31 07:09:29 | MASTER-OAFA | (18h 46m 18.07s , -53d 46m 20.6s) | C | 60 | 17.8 | 3761 | 2026-05-31 07:10:46 | MASTER-OAFA | (18h 47m 18.97s , -51d 52m 21.5s) | C | 60 | 17.7 | 3821 | 2026-05-31 07:10:46 | MASTER-OAFA | (18h 47m 18.98s , -51d 52m 21.6s) | C | 180 | 18.4 | Coadd 3833 | 2026-05-31 07:11:58 | MASTER-OAFA | (19h 00m 10.19s , -51d 53m 44.8s) | C | 60 | 17.7 | 3893 | 2026-05-31 07:11:58 | MASTER-OAFA | (19h 00m 10.19s , -51d 53m 44.8s) | C | 180 | 18.4 | Coadd 3919 | 2026-05-31 07:13:24 | MASTER-OAFA | (19h 00m 10.57s , -51d 52m 42.2s) | C | 60 | 17.7 | 3985 | 2026-05-31 07:14:30 | MASTER-OAFA | (19h 00m 16.18s , -51d 53m 40.5s) | C | 60 | 17.9 | 4064 | 2026-05-31 07:15:49 | MASTER-OAFA | (18h 47m 13.98s , -51d 53m 47.1s) | C | 60 | 17.8 | 4141 | 2026-05-31 07:17:06 | MASTER-OAFA | (19h 00m 18.54s , -51d 54m 13.1s) | C | 60 | 18.0 | 4201 | 2026-05-31 07:17:06 | MASTER-OAFA | (19h 00m 18.54s , -51d 54m 13.1s) | C | 180 | 18.5 | Coadd 4218 | 2026-05-31 07:18:23 | MASTER-OAFA | (18h 47m 17.91s , -51d 52m 10.0s) | C | 60 | 18.1 | 4299 | 2026-05-31 07:19:44 | MASTER-OAFA | (19h 16m 32.50s , -57d 35m 27.0s) | C | 60 | 18.5 | 4359 | 2026-05-31 07:19:44 | MASTER-OAFA | (19h 16m 32.50s , -57d 35m 27.0s) | C | 180 | 19.1 | Coadd 4377 | 2026-05-31 07:21:02 | MASTER-OAFA | (19h 31m 23.40s , -57d 37m 24.8s) | C | 60 | 18.6 | 4437 | 2026-05-31 07:21:02 | MASTER-OAFA | (19h 31m 23.39s , -57d 37m 24.9s) | C | 180 | 19.2 | Coadd 4468 | 2026-05-31 07:22:33 | MASTER-OAFA | (19h 31m 23.11s , -57d 36m 22.0s) | C | 60 | 18.6 | 4547 | 2026-05-31 07:23:52 | MASTER-OAFA | (19h 16m 34.90s , -57d 36m 18.8s) | C | 60 | 18.6 | 4636 | 2026-05-31 07:25:21 | MASTER-OAFA | (19h 16m 29.15s , -57d 37m 16.0s) | C | 60 | 18.6 | 4733 | 2026-05-31 07:26:58 | MASTER-OAFA | (19h 31m 31.66s , -57d 37m 51.1s) | C | 60 | 18.7 | 4809 | 2026-05-31 07:28:14 | MASTER-OAFA | (19h 16m 32.52s , -57d 35m 30.3s) | C | 60 | 18.6 | 4869 | 2026-05-31 07:28:14 | MASTER-OAFA | (19h 16m 32.52s , -57d 35m 30.3s) | C | 180 | 19.0 | Coadd 4896 | 2026-05-31 07:29:41 | MASTER-OAFA | (19h 24m 54.82s , -51d 55m 38.1s) | C | 60 | 18.5 | 4974 | 2026-05-31 07:30:59 | MASTER-OAFA | (19h 24m 58.03s , -51d 53m 53.1s) | C | 60 | 18.4 | 5049 | 2026-05-31 07:32:14 | MASTER-OAFA | (19h 24m 52.09s , -51d 54m 46.8s) | C | 60 | 18.4 | 5109 | 2026-05-31 07:32:14 | MASTER-OAFA | (19h 24m 52.09s , -51d 54m 46.8s) | C | 180 | 19.0 | Coadd 5126 | 2026-05-31 07:33:31 | MASTER-OAFA | (19h 24m 53.16s , -51d 53m 44.0s) | C | 60 | 18.4 | 5206 | 2026-05-31 07:34:51 | MASTER-OAFA | (19h 12m 01.79s , -51d 53m 51.5s) | C | 60 | 18.3 | 5266 | 2026-05-31 07:34:51 | MASTER-OAFA | (19h 12m 01.80s , -51d 53m 51.5s) | C | 180 | 18.6 | Coadd 5288 | 2026-05-31 07:36:13 | MASTER-OAFA | (19h 12m 00.74s , -51d 54m 20.9s) | C | 60 | 17.3 | 5354 | 2026-05-31 07:37:19 | MASTER-OAFA | (19h 12m 00.96s , -51d 54m 19.5s) | C | 60 | 18.4 | 5432 | 2026-05-31 07:38:37 | MASTER-OAFA | (19h 11m 59.11s , -51d 53m 02.6s) | C | 60 | 17.8 | 5492 | 2026-05-31 07:38:37 | MASTER-OAFA | (19h 11m 59.11s , -51d 53m 02.5s) | C | 180 | 18.5 | Coadd 5499 | 2026-05-31 07:39:44 | MASTER-OAFA | (18h 59m 57.09s , -53d 47m 47.5s) | C | 60 | 18.3 | 5559 | 2026-05-31 07:39:44 | MASTER-OAFA | (18h 59m 57.09s , -53d 47m 47.5s) | C | 180 | 18.8 | Coadd 5583 | 2026-05-31 07:41:08 | MASTER-OAFA | (19h 00m 00.32s , -53d 46m 09.8s) | C | 60 | 18.1 | 5649 | 2026-05-31 07:42:14 | MASTER-OAFA | (18h 59m 54.17s , -53d 46m 49.6s) | C | 60 | 18.3 | 5728 | 2026-05-31 07:43:33 | MASTER-OAFA | (18h 59m 54.45s , -53d 45m 47.8s) | C | 60 | 17.8 | 5788 | 2026-05-31 07:43:33 | MASTER-OAFA | (18h 59m 54.45s , -53d 45m 47.7s) | C | 180 | 18.7 | Coadd 5795 | 2026-05-31 07:44:40 | MASTER-OAFA | (18h 46m 29.24s , -53d 45m 55.6s) | C | 60 | 17.8 | 5860 | 2026-05-31 07:45:46 | MASTER-OAFA | (18h 46m 23.45s , -53d 46m 53.3s) | C | 60 | 18.2 | 5920 | 2026-05-31 07:45:46 | MASTER-OAFA | (18h 46m 23.45s , -53d 46m 53.3s) | C | 180 | 18.9 | Coadd 5937 | 2026-05-31 07:47:02 | MASTER-OAFA | (18h 46m 29.93s , -53d 46m 45.6s) | C | 60 | 18.3 | 6015 | 2026-05-31 07:48:20 | MASTER-OAFA | (18h 46m 27.83s , -53d 45m 04.0s) | C | 60 | 18.2 | 6092 | 2026-05-31 07:49:38 | MASTER-OAFA | (18h 59m 59.51s , -53d 47m 11.8s) | C | 60 | 18.1 | 6159 | 2026-05-31 07:50:44 | MASTER-OAFA | (19h 00m 02.74s , -53d 45m 42.7s) | C | 60 | 18.3 | 6239 | 2026-05-31 07:52:04 | MASTER-OAFA | (18h 59m 58.05s , -53d 46m 35.6s) | C | 60 | 18.0 | 6299 | 2026-05-31 07:52:04 | MASTER-OAFA | (18h 59m 58.04s , -53d 46m 35.7s) | C | 180 | 18.6 | Coadd 6306 | 2026-05-31 07:53:11 | MASTER-OAFA | (18h 59m 57.98s , -53d 45m 33.8s) | C | 60 | 18.3 | 6395 | 2026-05-31 07:54:40 | MASTER-OAFA | (18h 46m 32.33s , -53d 45m 41.7s) | C | 60 | 18.2 | 6455 | 2026-05-31 07:54:40 | MASTER-OAFA | (18h 46m 32.33s , -53d 45m 41.7s) | C | 180 | 18.8 | Coadd 6487 | 2026-05-31 07:56:12 | MASTER-OAFA | (18h 46m 26.96s , -53d 46m 39.8s) | C | 60 | 18.2 | 6565 | 2026-05-31 07:57:30 | MASTER-OAFA | (18h 46m 33.86s , -53d 46m 12.0s) | C | 60 | 18.2 | 6642 | 2026-05-31 07:58:47 | MASTER-OAFA | (18h 46m 30.67s , -53d 44m 47.0s) | C | 60 | 18.0 | 6702 | 2026-05-31 07:58:47 | MASTER-OAFA | (18h 46m 30.67s , -53d 44m 47.0s) | C | 180 | 17.8 | Coadd 6720 | 2026-05-31 08:00:05 | MASTER-OAFA | (19h 00m 24.77s , -51d 53m 14.9s) | C | 60 | 18.1 | 6800 | 2026-05-31 08:01:25 | MASTER-OAFA | (19h 00m 27.28s , -51d 51m 36.1s) | C | 60 | 18.1 | 6876 | 2026-05-31 08:02:41 | MASTER-OAFA | (19h 00m 21.83s , -51d 52m 26.9s) | C | 60 | 18.1 | 6936 | 2026-05-31 08:02:41 | MASTER-OAFA | (19h 00m 21.84s , -51d 52m 27.0s) | C | 180 | 18.0 | Coadd 6952 | 2026-05-31 08:03:57 | MASTER-OAFA | (19h 00m 22.92s , -51d 51m 25.9s) | C | 60 | 18.0 | 7030 | 2026-05-31 08:05:15 | MASTER-OAFA | (18h 47m 31.26s , -51d 51m 37.6s) | C | 60 | 18.0 | 7090 | 2026-05-31 08:05:15 | MASTER-OAFA | (18h 47m 31.26s , -51d 51m 37.5s) | C | 180 | 18.6 | Coadd 7109 | 2026-05-31 08:06:34 | MASTER-OAFA | (18h 47m 26.86s , -51d 52m 35.5s) | C | 60 | 18.0 | 7185 | 2026-05-31 08:07:50 | MASTER-OAFA | (18h 47m 33.69s , -51d 52m 33.5s) | C | 60 | 17.9 | 7262 | 2026-05-31 08:09:07 | MASTER-OAFA | (18h 47m 30.42s , -51d 50m 54.8s) | C | 60 | 18.0 | 7341 | 2026-05-31 08:10:26 | MASTER-OAFA | (19h 31m 38.78s , -57d 36m 37.1s) | C | 60 | 18.4 | 7401 | 2026-05-31 08:10:26 | MASTER-OAFA | (19h 31m 38.78s , -57d 36m 37.2s) | C | 180 | 19.2 | Coadd 7423 | 2026-05-31 08:11:48 | MASTER-OAFA | (19h 31m 41.47s , -57d 35m 19.3s) | C | 60 | 18.5 | 7499 | 2026-05-31 08:13:04 | MASTER-OAFA | (19h 31m 37.44s , -57d 35m 53.0s) | C | 60 | 18.5 | 7576 | 2026-05-31 08:14:22 | MASTER-OAFA | (19h 31m 37.85s , -57d 34m 50.7s) | C | 60 | 18.5 | 7636 | 2026-05-31 08:14:22 | MASTER-OAFA | (19h 31m 37.78s , -57d 34m 50.9s) | C | 180 | 18.6 | Coadd 7654 | 2026-05-31 08:15:39 | MASTER-OAFA | (19h 16m 47.51s , -57d 34m 53.5s) | C | 60 | 18.4 | 7746 | 2026-05-31 08:17:11 | MASTER-OAFA | (19h 16m 43.21s , -57d 35m 51.2s) | C | 60 | 18.4 | 7834 | 2026-05-31 08:18:39 | MASTER-OAFA | (19h 16m 49.04s , -57d 35m 26.2s) | C | 60 | 18.3 | 7914 | 2026-05-31 08:19:59 | MASTER-OAFA | (19h 16m 46.29s , -57d 34m 03.8s) | C | 60 | 18.2 | 8005 | 2026-05-31 08:21:30 | MASTER-OAFA | (19h 25m 06.71s , -51d 54m 22.7s) | C | 60 | 18.3 | 8095 | 2026-05-31 08:23:00 | MASTER-OAFA | (19h 25m 09.34s , -51d 52m 44.0s) | C | 60 | 18.2 | 8155 | 2026-05-31 08:23:00 | MASTER-OAFA | (19h 25m 09.34s , -51d 52m 44.0s) | C | 180 | 18.8 | Coadd 8183 | 2026-05-31 08:24:28 | MASTER-OAFA | (19h 25m 03.90s , -51d 53m 26.1s) | C | 60 | 18.2 | 8265 | 2026-05-31 08:25:50 | MASTER-OAFA | (19h 25m 04.32s , -51d 52m 24.1s) | C | 60 | 18.1 | 8331 | 2026-05-31 08:26:57 | MASTER-OAFA | (19h 12m 14.55s , -51d 52m 37.2s) | C | 60 | 18.0 | 8408 | 2026-05-31 08:28:13 | MASTER-OAFA | (19h 12m 09.06s , -51d 53m 35.4s) | C | 60 | 18.0 | 8493 | 2026-05-31 08:29:38 | MASTER-OAFA | (19h 12m 13.79s , -51d 53m 04.8s) | C | 60 | 18.0 | 8572 | 2026-05-31 08:30:57 | MASTER-OAFA | (19h 12m 12.05s , -51d 51m 59.9s) | C | 60 | 18.0 | 8654 | 2026-05-31 08:32:19 | MASTER-OAFA | (19h 00m 11.05s , -53d 46m 14.3s) | C | 60 | 18.0 | 8746 | 2026-05-31 08:33:51 | MASTER-OAFA | (19h 00m 13.99s , -53d 45m 00.1s) | C | 60 | 17.9 | 8806 | 2026-05-31 08:33:51 | MASTER-OAFA | (19h 00m 13.99s , -53d 45m 00.1s) | C | 180 | 18.5 | Coadd 8836 | 2026-05-31 08:35:21 | MASTER-OAFA | (19h 00m 09.05s , -53d 45m 39.9s) | C | 60 | 17.9 | 8911 | 2026-05-31 08:36:36 | MASTER-OAFA | (19h 00m 08.70s , -53d 44m 38.2s) | C | 60 | 17.9 | 9004 | 2026-05-31 08:38:09 | MASTER-OAFA | (18h 46m 44.75s , -53d 44m 51.5s) | C | 60 | 17.7 | 9114 | 2026-05-31 08:39:59 | MASTER-OAFA | (18h 46m 30.23s , -53d 52m 59.6s) | C | 60 | 17.8 | 9180 | 2026-05-31 08:41:05 | MASTER-OAFA | (18h 46m 36.47s , -53d 52m 41.7s) | C | 60 | 17.9 | 9261 | 2026-05-31 08:42:26 | MASTER-OAFA | (18h 46m 34.22s , -53d 51m 00.2s) | C | 60 | 17.9 | 9350 | 2026-05-31 08:43:55 | MASTER-OAFA | (19h 00m 07.00s , -53d 53m 37.7s) | C | 60 | 16.4 | 9410 | 2026-05-31 08:43:55 | MASTER-OAFA | (19h 00m 07.00s , -53d 53m 37.7s) | C | 180 | 17.9 | Coadd 9497 | 2026-05-31 08:46:23 | MASTER-OAFA | (19h 00m 04.66s , -53d 52m 39.3s) | C | 60 | 17.5 | 9578 | 2026-05-31 08:47:43 | MASTER-OAFA | (19h 00m 04.92s , -53d 51m 38.1s) | C | 60 | 17.9 | 9662 | 2026-05-31 08:49:07 | MASTER-OAFA | (19h 00m 33.52s , -51d 59m 01.0s) | C | 60 | 17.9 | 9740 | 2026-05-31 08:50:25 | MASTER-OAFA | (19h 00m 30.52s , -51d 57m 57.7s) | C | 60 | 18.0 | 9800 | 2026-05-31 08:50:25 | MASTER-OAFA | (19h 00m 30.51s , -51d 57m 57.7s) | C | 180 | 18.6 | Coadd 9824 | 2026-05-31 08:51:49 | MASTER-OAFA | (19h 00m 30.70s , -51d 59m 13.4s) | C | 60 | 18.0 | 9902 | 2026-05-31 08:53:07 | MASTER-OAFA | (19h 00m 33.85s , -51d 57m 39.7s) | C | 60 | 18.1 | 9989 | 2026-05-31 08:54:34 | MASTER-OAFA | (19h 31m 49.04s , -57d 42m 31.4s) | C | 60 | 18.5 | 10064 | 2026-05-31 08:55:50 | MASTER-OAFA | (19h 31m 42.78s , -57d 43m 30.9s) | C | 60 | 18.4 | 10144 | 2026-05-31 08:57:09 | MASTER-OAFA | (19h 31m 49.15s , -57d 43m 13.2s) | C | 60 | 17.6 | 10217 | 2026-05-31 08:58:22 | MASTER-OAFA | (19h 31m 47.05s , -57d 41m 44.9s) | C | 60 | 18.3 | 10309 | 2026-05-31 08:59:55 | MASTER-OAFA | (19h 25m 08.75s , -51d 59m 40.0s) | C | 60 | 18.2 | 10369 | 2026-05-31 08:59:55 | MASTER-OAFA | (19h 25m 08.75s , -51d 59m 40.0s) | C | 180 | 18.7 | Coadd 10392 | 2026-05-31 09:01:17 | MASTER-OAFA | (19h 25m 08.62s , -51d 58m 38.4s) | C | 60 | 18.1 | 10477 | 2026-05-31 09:02:42 | MASTER-OAFA | (19h 25m 14.18s , -51d 59m 37.6s) | C | 60 | 17.8 | 10546 | 2026-05-31 09:03:51 | MASTER-OAFA | (19h 25m 08.91s , -52d 00m 36.7s) | C | 60 | 17.7 | 10667 | 2026-05-31 09:05:53 | MASTER-OAFA | (19h 02m 08.96s , -50d 04m 19.5s) | C | 60 | 18.0 | 10746 | 2026-05-31 09:07:11 | MASTER-OAFA | (19h 02m 02.62s , -50d 05m 18.5s) | C | 60 | 17.9 | 10843 | 2026-05-31 09:08:48 | MASTER-OAFA | (19h 36m 55.75s , -51d 59m 09.3s) | C | 60 | 18.3 | 10903 | 2026-05-31 09:08:48 | MASTER-OAFA | (19h 36m 55.75s , -51d 59m 09.3s) | C | 180 | 18.9 | Coadd 10919 | 2026-05-31 09:10:04 | MASTER-OAFA | (19h 36m 49.81s , -52d 00m 06.7s) | C | 60 | 18.2 | 11010 | 2026-05-31 09:11:35 | MASTER-OAFA | (19h 36m 49.96s , -52d 00m 05.7s) | C | 60 | 18.4 | 11102 | 2026-05-31 09:13:07 | MASTER-OAFA | (19h 36m 50.16s , -52d 00m 04.8s) | C | 60 | 18.5 | 11162 | 2026-05-31 09:13:07 | MASTER-OAFA | (19h 36m 50.16s , -52d 00m 04.8s) | C | 180 | 19.2 | Coadd 11270 | 2026-05-31 09:15:55 | MASTER-OAFA | (19h 36m 56.81s , -52d 00m 59.2s) | C | 60 | 18.4 | 11348 | 2026-05-31 09:17:13 | MASTER-OAFA | (19h 36m 54.49s , -52d 00m 45.3s) | C | 60 | 18.4 | 11599 | 2026-05-31 09:21:24 | MASTER-OAFA | (19h 36m 53.46s , -51d 58m 57.5s) | C | 60 | 18.3 | 11659 | 2026-05-31 09:21:24 | MASTER-OAFA | (19h 36m 53.46s , -51d 58m 57.5s) | C | 180 | 19.0 | Coadd 11677 | 2026-05-31 09:22:43 | MASTER-OAFA | (19h 36m 57.97s , -51d 59m 57.0s) | C | 60 | 18.2 | 11824 | 2026-05-31 09:25:09 | MASTER-OAFA | (19h 36m 58.67s , -52d 00m 50.4s) | C | 60 | 18.2 | 42838 | 2026-05-31 18:02:03 | MASTER-SAAO | (19h 12m 51.00s , -50d 21m 54.7s) | C | 60 | 16.2 | 42838 | 2026-05-31 18:02:03 | MASTER-SAAO | (19h 10m 01.45s , -50d 06m 26.3s) | C | 60 | 16.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. [1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp. http : // www.pereplet.ru/lipunov/625.html View this GCN Circular online at https://gcn.nasa.gov/circulars/44748. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42876] GRB 260531B: Fermi GBM Final Real-time Localization
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44747 SUBJECT: GRB 260531B: Fermi GBM Final Real-time Localization DATE: 26/05/31 14:08:37 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 13:57:59 UT on 31 May 2026, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 260531B (trigger 801928684.989378 / 260531582). The on-ground calculated location, using the Fermi GBM trigger data, is RA = 282.6, Dec = 6.4 (J2000 degrees, equivalent to J2000 18h 50m, 6d 24'), with a statistical uncertainty of 2.2 degrees. The angle from the Fermi LAT boresight is 48.0 degrees. The skymap can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531582/… The HEALPix FITS file, including the estimated localization systematic, can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531582/… The GBM light curve can be found here: https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260531582/… View this GCN Circular online at https://gcn.nasa.gov/circulars/44747. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42875] GRB 260531A: MAXI/GSC detection
by GCN Circulars 31 May '26

31 May '26

TITLE: GCN CIRCULAR NUMBER: 44746 SUBJECT: GRB 260531A: MAXI/GSC detection DATE: 26/05/31 09:28:53 GMT FROM: Motoko Serino at Aoyama Gakuin U. <serino(a)phys.aoyama.ac.jp> H. Aoe (Ehime U.), H. Negoro (Nihon U.), M. Serino, S. Sugita (AGU), M. Nakajima, K. Saito, T. Yokoyama, M. Wada (Nihon U.), T. Mihara, T. Tamagawa, N. Kawai, M. Matsuoka (RIKEN), T. Sakamoto, Y. Kawakubo, H. Hiramatsu, A. Yoshida (AGU), Y. Tsuboi, Y. Ishihara, H. Ogaki (Chuo U.), M. Shidatsu, C. Kang, M. Uenishi, T. Usuki, S. Yatsuzuka (Ehime U.), I. Takahashi, Y. Yatsu (Science Tokyo), S. Nakahira, S. Ueno, H. Tomida, M. Kurihara (JAXA), Y. Ueda, K. Fujiwara, S. Kobayashi (Kyoto U.), M. Yamauchi, M. Nishio, C. Hiraizumi (Miyazaki U.), K. Yamaoka (Nagoya U.), M. Sugizaki (Kanazawa U.), W. Iwakiri (Chiba U.), T. Kawamuro (Osaka U.), S. Yamada (Tohoku U), S. Ogawa (TUS) report on behalf of the MAXI team: The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 05:30:18 UT on 2026 May 31. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (69.904 deg, -10.627 deg) = (04 39 36, -10 37 37) (J2000) with a statistical 90% C.L. elliptical error region with long and short radii of 0.23 deg and 0.17 deg, respectively. The roll angle of long axis from the north direction is 64.0 deg counterclockwise. There is an additional systematic uncertainty of 0.1 deg (90% containment radius). The X-ray flux averaged over the scan was 230 +- 36 mCrab (4.0-10.0keV, 1 sigma error). Without assumptions on the source constancy, we obtain a rectangular error box for the transient source with the following corners: (R.A., Dec) = (69.234, -11.160) deg = (04 36 56, -11 09 36) (J2000) (R.A., Dec) = (69.533, -11.386) deg = (04 38 07, -11 23 09) (J2000) (R.A., Dec) = (70.598, -10.018) deg = (04 42 23, -10 01 04) (J2000) (R.A., Dec) = (70.300, -9.794) deg = (04 41 11, -09 47 38) (J2000) There was no significant excess flux in the previous transit at 03:57 UT and in the next transit at 07:03 UT with an upper limit of 20 mCrab for each. Note that this position is consistent with the position of Seyfert Galaxy MCG-02-12-050, but it is not clear if this transient is related to MCG-02-12-050 at this time. View this GCN Circular online at https://gcn.nasa.gov/circulars/44746. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42874] AT 2026nuz: COLIBRÍ optical observations
by GCN Circulars 30 May '26

30 May '26

TITLE: GCN CIRCULAR NUMBER: 44745 SUBJECT: AT 2026nuz: COLIBRÍ optical observations DATE: 26/05/30 16:56:24 GMT FROM: Alan Watson at UNAM <alan(a)astro.unam.mx> Francesco Magnani (CPPM), Margarita Pereyra (UNAM), Alan M. Watson (UNAM), Rosa L. Becerra (UNAM), Stéphane Basa (UAR Pytheas), William H. Lee (UNAM), Edilberto Aguilar-Ruiz (UNAM), Jean-Luc Atteia (IRAP), Camila Angulo (UNAM), Dalya Akl (NYUAD), Sarah Antier (IJCLAB), Nathaniel R. Butler (ASU), Damien Dornic (CPPM), Jean-Grégoire Ducoin (CPPM), Francis Fortin (IRAP), Leonardo García García (UNAM), Ramandeep Gill (UNAM), Noémie Globus (UNAM), Marion Guelfand (CPPM), Asuka Kuwata (UNAM), Massimiliano Lincetto (CPPM), Nikos Mandarakas (LAM), Diego López-Cámara (UNAM), Enrique Moreno Méndez (UNAM), Ny Avo Rakotondrainibe (LAM), Fredd Sánchez Álvarez (UNAM), Benjamin Schneider (LAM), and Antonio de Ugarte Postigo (LAM) report: We imaged the field of the AT 2026nuz (Habeeb et al., GCN Circ. 44737) using the DDRAGO two-channel wide-field imager on the COLIBRÍ telescope. We observed from 2026-05-30 08:34 to 11:17 UTC (from 30.4 to 32.4 hours after the trigger for GRB 260529A; Fermi GBM team, GCN 44733) and obtained 30, 30, 62, and 122 minutes of exposure in the g, r, i, and z filters. The data were reduced and coadded with the COLIBRÍ ASU pipeline. The photometry was calibrated using nearby stars from the PanSTARRS DR1 catalog, is in the AB system, and is not corrected for Galactic extinction. We detected the optical transient AT 2026nuz reported by Habeeb et al. (GCN Circ. 44737) at preliminary magnitudes of: g = 18.29 +/- 0.01 r = 18.32 +/- 0.01 i = 18.46 +/- 0.01 z = 18.51 +/- 0.01 The blue colors suggest that this is not the afterglow of GRB 260529A but could be CV, as suggested by Habeeb et al., or possibly an FBOT. That said, in addition to the reasons given by Habeeb et al., the lack of an obvious host in Legacy Survey imaging (Dey et al. 2019) argues against this being an FBOT. Nevertheless, we encourage spectroscopic observation to determine the nature of this source. We thank the staff of the Observatorio Astronómico Nacional at Sierra de San Pedro Mártir, as well as the technical and engineering teams at CEA, CPPM, IRAP, LAM, OHP, OSU Pytheas, and UNAM. COLIBRÍ is an astronomical observatory developed and operated jointly by France (AMU, CNES and CNRS) and Mexico (UNAM and SECIHTI). It is located at the Observatorio Astronómico Nacional on the Sierra de San Pedro Mártir, Baja California, Mexico. View this GCN Circular online at https://gcn.nasa.gov/circulars/44745. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42873] IPN triangulation of GRB 260527A / EP260527a
by GCN Circulars 30 May '26

30 May '26

TITLE: GCN CIRCULAR NUMBER: 44744 SUBJECT: IPN triangulation of GRB 260527A / EP260527a DATE: 26/05/30 14:35:28 GMT FROM: Dmitry Svinkin at Ioffe Institute <dmitrysvinkin(a)gmail.com> A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin on behalf of the HEND/Mars Odyssey team, D. Svinkin, D. Frederiks, A. Lysenko, A. Ridnaia, and T. Cline on behalf of the Konus-Wind team, E. Burns on behalf of the IPN, Y. Kawakubo, A. Yoshida, T. Sakamoto, S. Sugita (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), Y. Asaoka (ICRR), S. Torii, Y. Akaike, K. Kobayashi (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena), on behalf of the CALET collaboration, Chen-Wei Wang (IHEP), Shao-Lin Xiong (IHEP), Shuang-Nan Zhang (IHEP) on behalf of the Insight-HXMT team, Zheng-Hang Yu, Chen-Wei Wang, Shao-Lin Xiong, Chao Zheng, Cheng-Kui Li (IHEP) on behalf of GECAM team, and W. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr, and A.S. Gardner on on behalf of the GRS-Odyssey GRB team, report: The short-duration GRB 260527A (Konus-Wind detection: Svinkin et al., GCN 44722; GECAM-B detection: Yu et al., GCN 44724; CALET-GBM detection: Kawakubo et al., GCN 44726; Insight-HXMT detection: Wang et al., GCN 44735) was detected by Konus-Wind, CALET (GBM trigger 1463897683), GECAM-B, Insight-HXMT(HE), and Mars-Odyssey (HEND) at about 22570 s UT (06:16:10). We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 192.924 (12h 51m 42s) +1.318 ( +1d 19' 03") Corners: 192.308 (12h 49m 14s) +0.301 ( +0d 18' 02") 192.793 (12h 51m 10s) +1.224 ( +1d 13' 25") 193.417 (12h 53m 40s) +2.085 ( +2d 05' 08") 193.052 (12h 52m 13s) +1.406 ( +1d 24' 23") --------------------------------------------- The error box area is 457 sq. arcmin, and its maximum dimension is 2.1 deg (the minimum one is 6.4 arcmin). The Sun distance was 125 deg. This localization may be improved. The fast X-ray transient EP260527a (Yang et al., GCN 44718) is inside the box strengthen the association of the transient and GRB 260527A. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB260527_T22572/IPN/ View this GCN Circular online at https://gcn.nasa.gov/circulars/44744. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42872] EP260527a/GRB 260527A: further FTW optical and NIR observations
by GCN Circulars 30 May '26

30 May '26

TITLE: GCN CIRCULAR NUMBER: 44743 SUBJECT: EP260527a/GRB 260527A: further FTW optical and NIR observations DATE: 26/05/30 13:40:09 GMT FROM: Ziyuan.Zhu(a)campus.lmu.de Ziyuan Zhu (LMU), Malte Busmann (LMU), Brendan O'Connor (CMU), Julius Gassert (LMU/CMU), Daniel Gruen (LMU), Xander Hall (CMU), and Antonella Palmese (CMU) report: We observed the counterpart of EP260527a/GRB 260527A (Yang et al., GCN 44718; Aguilar-Ruiz et al., GCN 44719; Li et al., GCN 44720; Svinkin et al., GCN 44722; Yu et al., GCN 44724; Yang et al., GCN 44725; Kawakubo et al., GCN 44726; Mo et al., GCN 44727; Busman et al., GCN 44728) with the Three Channel Imager (3KK) at the Fraunhofer Telescope at Wendelstein Observatory (FTW) in the r, i, and J bands for 48x 180s starting at starting at 2026-05-29 20:47 UT (2.6 days after the trigger). In the r band, we do not detect the counterpart down to a limiting magnitude of r > 24.0 AB mag. The magnitude is calibrated against the PS1 catalog and not corrected for Galactic extinction. We thank Christoph Ries from the Wendelstein Observatory for obtaining these observations. View this GCN Circular online at https://gcn.nasa.gov/circulars/44743. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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[vsnet-grb-info 42871] GRB 260530B: SVOM/GRM detection of a possible bright short GRB
by GCN Circulars 30 May '26

30 May '26

TITLE: GCN CIRCULAR NUMBER: 44742 SUBJECT: GRB 260530B: SVOM/GRM detection of a possible bright short GRB DATE: 26/05/30 13:26:56 GMT FROM: Chenwei Wang at IHEP <cwwang(a)ihep.ac.cn> SVOM/GRM team: Chen-Wei Wang, Shi-Jie Zheng, Yue Huang, Shao-Lin Xiong, Shuang-Nan Zhang (IHEP) SVOM/ECLAIRs team: Marius Brunet (IRAP) Report on behalf of the SVOM team: SVOM/GRM was triggered in-flight by a bright short burst GRB 260530B (SVOM trigger reference: sb26053001) at 2026-05-30T06:00:05.600 UTC (T0). With the event-by-event data downloaded through the X-band ground station, the GRM light curve shows that this burst consists of a single symmetrical smooth pulse with a T90 of 1.55 +0.20/-0.15 s in the 15-5000 keV band. The SVOM/GRM light curve can be found here: https://www.bursthub.cn//admin/static/svgrb260530B.png ECLAIRs was not collecting data at the time of this burst. We note that this signal was detected near the NWC transmitter and may be associated with the artificial electron belt, so it is not yet clear whether it is a genuine astrophysical burst. The Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. GRM is developed by the Institute of High Energy Physics (IHEP) of CAS. The SVOM point of contact for this burst is: Chen-Wei Wang (IHEP)(cwwang(a)ihep.ac.cn) View this GCN Circular online at https://gcn.nasa.gov/circulars/44742. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0L…

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