GRB 200224B
GCN Circular 27174
Subject
GRB 200224B: Fermi GBM Final Real-time Localization
Date
2020-02-24T05:16:06Z (5 years ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
The Fermi GBM team reports the detection of a likely LONG GRB
At 05:05:49 UT on 24 Feb 2020, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 200224A (trigger 604213554.278888 / 200224212).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 177.9, Dec = -28.9 (J2000 degrees, equivalent to J2000 11h 51m, -28d 53'), with a statistical uncertainty of 3.1 degrees.
The angle from the Fermi LAT boresight is 23.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224212/quicklook/glg_skymap_all_bn200224212.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224212/quicklook/glg_healpix_all_bn200224212.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2020/bn200224212/quicklook/glg_lc_medres34_bn200224212.gif
[GCN OPS NOTE(24feb20): This is the third Circular in the sequence of 8 circulars
which were all labeled A because of the sequence assigner being offline.
This circular was orginally, incorrectly labelled A, but the true letter identity is B.]
GCN Circular 27181
Subject
Correction in name: GRB 200224B and GRB 200224C (not GRB 200224A)
Date
2020-02-24T21:32:30Z (5 years ago)
From
Stephen Lesage at Fermi-GBM Team <sjl0014@uah.edu>
S. Lesage (UAH) reports on behalf of the Fermi GBM Team:
���The Fermi Gamma-ray Burst Monitor (GBM) triggers 604213554/200224212
at 05:05:49 UT and 604231129/200224416 at 09:58:44 on 24 Feb 2020,
originally named GRB 200224A in GCN 27174 and GCN 27178, should be
GRB 200224B and GRB 200224C respectively.
We apologize for any confusion caused."
GCN Circular 27215
Subject
GRB 200224B: DDOTI/OAN optical observations report
Date
2020-02-26T00:30:12Z (5 years ago)
From
Emma Margarita Pereyra Talamantes at IA-UNAM Ensenada <mpereyra@astro.unam.mx>
Margarita Pereyra (UNAM), Nat Butler (ASU), Alan M. Watson (UNAM),
Eleonora Troja (GSFC/UMD), Simone Dichiara (GSFC/UMD), Rosa L. Becerra
(UNAM), William H. Lee (UNAM), Diego Gonzalez (UNAM), Alexander Kutyrev
(GSFC/UMD), and Tanner Wolfram (ASU), report:
We observed the field of GRB 200224B detected by the Fermi Gamma-ray Burst
Monitor (GCN 27174, Fermi trigger 604213554), with the DDOTI/OAN wide-field
imager at the Observatorio Astron��mico Nacional on Sierra San Pedro M��rtir (
http://ddoti.astroscu.unam.mx) from 2020-02-24 06:47 to 2020-02-24 12:16
UTC (1.68 to 7.16 hours after the event).
We observed a region of 13.6 degrees in RA by 20.4 degrees in declination,
with a 2 x 2 grid, centered on the Fermi GBM Final Position +11:51:36
-28:52:11 J2000. This region contains about 277 square degrees. We obtained
2040 to 2520 seconds exposure across the region. We calibrated our images
against the APASS catalog. Our 10-sigma limiting magnitude is around w =
19.45.
Comparing to the USNO-B1, DSS DR2 and Pan-STARRS DR1 catalogs, we do not
detect any uncataloged source with significant fading within the 90%
probability radius of 6.3 degrees.
We thank the staff of the Observatorio Astron��mico Nacional in San Pedro
M��rtir.
--
*Dr. Margarita Pereyra *
*FFTF, Schlumberger Foundation Alumnae*
----------------------------------------------------------------------------------------------------------------
*Catedr��tico Conacyt*
*Instituto de Astronom��a de la UNAM,*
*Km. 107 Carretera Tijua**na-Ensenada, *
*Ensenada Baja California, M��xico. C.P. 22860*
Oficina: 405
Skype: margarita-pereyra