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GCN Circular 34937

Subject
GRB 231104A: Fermi GBM Final Real-time Localization
Date
2023-11-04T01:57:53Z (7 months ago)
From
Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>
Via
email
The Fermi GBM team reports the detection of a likely LONG GRB

At 01:47:28 UT on 4 Nov 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231104A (trigger 720755253.13875 / 231104075).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 8.0, Dec = 82.1 (J2000 degrees, equivalent to J2000 00h 32m, 82d 05'), with a statistical uncertainty of 1.0 degrees.

The angle from the Fermi LAT boresight is 32.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231104075/quicklook/glg_skymap_all_bn231104075.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231104075/quicklook/glg_healpix_all_bn231104075.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231104075/quicklook/glg_lc_medres34_bn231104075.gif


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