January 2025 - vsnet-grb-info - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-grb-info 36897] GRB 250101A: CMO RC-500 optical observations
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38890 SUBJECT: GRB 250101A: CMO RC-500 optical observations DATE: 25/01/10 12:36:46 GMT FROM: Nicolai Pankov at HSE, IKI RAS <colinsergesen(a)gmail.com> N. Pankov (HSE, IKI RAS), A. Pozanenko (IKI RAS), A. Tarasenkov (INASAN), A. Moskvitin (SAO RAS) report on behalf of a larger collaboration: We performed optical observations of the field of GRB 250101A (Page et. al, GCN 38752; Li et. al, GCN 38753; Mohan et. al, GCN 38754; Zhu et. al, GCN 38755; … [View More]

1 0

[vsnet-grb-info 36896] EP250109a / GRB 250109A: refined EP-WXT analysis and EP-FXT follow-up observation
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38889 SUBJECT: EP250109a / GRB 250109A: refined EP-WXT analysis and EP-FXT follow-up observation DATE: 25/01/10 09:43:01 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> R.-Z. Li (YNAO, CAS), X.-L. Chen (YNU), K. Chatterjee (YNU), Y.-L. Hua (PMO, CAS), H. Sun and Y. Liu (NAO, CAS) report on behalf of the Einstein Probe team: Since 2025-01-09 06:17:58 (UTC, T0), EP250109a (Li et al., GCN 38864) has been detectable with high significance using the WXT … [View More]

1 0

[vsnet-grb-info 36895] EP250108a: EP-FXT follow-up observation
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38888 SUBJECT: EP250108a: EP-FXT follow-up observation DATE: 25/01/10 07:45:32 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> R.-Z. Li (YNAO, CAS), X.-L. Chen (YNU), K. Chatterjee (YNU), Y.-L. Hua (PMO) and Y. Liu (NAOC) report on behalf of the Einstein Probe team: We performed a follow-up observation of EP250108a using the FXT onboard the EP. The observation began at 2025-01-09T10:42:46 (UTC, about 22.2 hours post-trigger), with an exposure time … [View More]

1 0

[vsnet-grb-info 36894] GRB 250109A: Fermi GBM Observation
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38887 SUBJECT: GRB 250109A: Fermi GBM Observation DATE: 25/01/10 06:40:17 GMT FROM: Utkarsh Pathak at IIT Bombay <utkarshpathak.07(a)gmail.com> U. Pathak (IITB) and C. Meegan (UAH) report on behalf of the Fermi Gamma-ray Burst Monitor Team: "At 06:17:08.60 UT on 09 January 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250109A (trigger 758096233/250109262). which was also detected by EP-WXT and EP-FXT (Li et al. 2025, GCN … [View More]

1 0

[vsnet-grb-info 36893] The EP-WXT trigger 01709130111 is likely a flaring star
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38886 SUBJECT: The EP-WXT trigger 01709130111 is likely a flaring star DATE: 25/01/10 05:17:40 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> R.-Z. Li (YNAO, CAS), X.-L. Chen, K. Chatterjee (YNU) and H. Q. Cheng, Z. X. Ling (NAOC, CAS) report on behalf of the Einstein Probe team: The EP-WXT trigger (ID 01709130111) on 2025-01-10 04:52:13 (UTC) is likely a stellar flare associated with a Low-mass Star RX J0429.3-3124. The estimated flux of the … [View More]

1 0

[vsnet-grb-info 36892] EP250108a: NOT optical observations
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38885 SUBJECT: EP250108a: NOT optical observations DATE: 25/01/10 04:55:01 GMT FROM: Dong Xu at NAOC/CAS <dxu(a)nao.cas.cn> Z.P. Zhu, X. Liu, S.Y. Fu, S.Q. Jiang, J. An, D. Xu (NAOC) report on behalf of large collaboration: We observed the field of EP250108a (Li et al., GCN 38861) using the Nordic Optical Telescope (NOT) equipped with ALFOSC. The observations were carried out in the g-/r-/i-/z- bands, starting at 22:16:55 UT on 2025-01-09, i.e., 1.4 … [View More]

1 0

[vsnet-grb-info 36891] EP-WXT trigger EP250109a：Xinglong optical follow-up observations
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38884 SUBJECT: EP-WXT trigger EP250109a：Xinglong optical follow-up observations DATE: 25/01/10 04:52:16 GMT FROM: EP Team at NAOC/CAS <ep_ta(a)bao.ac.cn> Report on behalf of the Xinglong collaboration: Junjie-Jin(NAOC), Haiyang-Mu(NAOC), Feng-Xiao(NAOC), Pengliang-Du(NAOC), Ying-Wu(NAOC), Zhou-Fan(NAOC), Hong-Wu(NAOC), Jie-Zheng (NAOC) We observed the field of the X-ray transient, EP 250109a by the Xinglong 2.16-m telescope located at Xinglong, Hebei,… [View More]

1 0

[vsnet-grb-info 36890] GRB 250109a: GMG Optical Upper Limit
by GCN Circulars 10 Jan '25

10 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38883 SUBJECT: GRB 250109a: GMG Optical Upper Limit DATE: 25/01/10 03:05:29 GMT FROM: wangbaiting(a)ynao.ac.cn B.-T. Wang, R.-Z. Li, F.-F. Song, J. Mao, X.-L. Zhang and J.-M. Bai (YNAO, CAS) report: We observed the field of EP250109a (EP team, GCN 38864; Kennea et. al, GCN 38867; Kumar et. al, GCN 38868; Lipunov et. al, GCN 38871; Fermi GBM team, GCN 38873）with the GMG-2.4m telescope at the Lijiang Observatory. The observation began at 2025-01-09T13:30:50 (… [View More]

1 0

[vsnet-grb-info 36889] EP250109a: Swift/UVOT non-detection
by GCN Circulars 09 Jan '25

09 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38882 SUBJECT: EP250109a: Swift/UVOT non-detection DATE: 25/01/09 23:46:29 GMT FROM: Sam Shilling at Lancaster University <shilling.sam(a)gmail.com> S. P. R. Shilling (Lancaster U.), S. R. Oates (Lancaster U.), A. A. Breeveld (UCL-MSSL) and N. P. M. Kuin (UCL-MSSL) report on behalf of the Swift UVOT team: Swift/UVOT observed the field of EP250109a (Li et al., GCN 38864) for 938 seconds in the U-band starting at 09:22:16 UT, 3 hours after the … [View More]

1 0

[vsnet-grb-info 36888] Konus-Wind detection of GRB 250107D (short/hard)
by GCN Circulars 09 Jan '25

09 Jan '25

TITLE: GCN CIRCULAR NUMBER: 38881 SUBJECT: Konus-Wind detection of GRB 250107D (short/hard) DATE: 25/01/09 22:08:34 GMT FROM: Dmitry Frederiks at Ioffe Institute <fred(a)mail.ioffe.ru> D. Frederiks, A.Lysenko, A. Ridnaia, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The short GRB 250107D (IPN triangulation: Kozyrev et al., GCN 38880) triggered Konus-Wind (KW) at T0=19411.897 s UT (05:23:31.897). The burst light curve shows a … [View More]

1 0

2025

2024

2023

2022

2021

vsnet-grb-info January 2025