Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 31497

Subject
Konus-Wind observation of the recent SGR 1935+2154 activity
Date
2022-01-19T13:46:08Z (2 years ago)
From
Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>
A. Ridnaia, D. Frederiks, M. Ulanov, D. Svinkin,
A. Tsvetkova, A. Lysenko, and T. Cline
on behalf of the Konus-Wind team, report:

Since the last KW GCN on the ongoing SGR 1935+2154 activity
(Ridnaia et al., GCN 31325) the instrument triggered on
thirteen bright bursts from the source.

The following is a list of the Konus-Wind triggers.
---------------------------------------------
#     Date       T0(KW) s        UT
---------------------------------------------
1   20211229  60082.391 s UT (16:41:22.391)
2   20220111  61551.690 s UT (17:05:51.690)
3   20220112  31161.806 s UT (08:39:21.806)
4   20220113  29375.444 s UT (08:09:35.444)
5   20220113  46378.912 s UT (12:52:58.912)
6   20220113  80750.270 s UT (22:25:50.270)
7   20220114  33622.126 s UT (09:20:22.126)
8   20220114  58119.186 s UT (16:08:39.186)
9   20220114  71808.322 s UT (19:56:48.322)
10  20220115  30352.115 s UT (08:25:52.115)
11  20220115  62515.176 s UT (17:21:55.176)
12  20220115  70649.225 s UT (19:37:29.225)
13  20220116  50974.968 s UT (14:09:34.968)
---------------------------------------------
The bursts have durations (~0.2-0.9 s),
energy fluences (0.9-5.9)x10^-6 erg/cm2,
and spectral hardness (Ep ~ 20-45 keV)
typical of bright short bursts from SGR 1935+2154
observed by KW previously.

The detailed analysis of these bursts will be presented
in the dedicated paper.
Looking for U.S. government information and services? Visit USA.gov