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GCN Circular 35712

Subject
GRB 240209A: Fermi GBM Final Localization
Date
2024-02-09T21:46:46Z (14 days ago)
From
Christian Malacaria at ISSI <cmalacaria.astro@gmail.com>
Via
Web form
The Fermi GBM team reports the detection of a likely LONG GRB.

"At 06:19:19.82 UT on 09 April 2024, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 240209A (trigger 729152364 / 240209263).

The on-ground calculated location, using the GBM trigger data, 
is RA = 259.8, DEC = 70.5 (J2000 degrees, equivalent 
to 17h 19m, 70d 30'), with an uncertainty of 9.1 degrees.

The angle from the Fermi LAT boresight at the GBM trigger time is 31 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240209263/quicklook/glg_skymap_all_bn240209263.png

The HEALPix FITS file, including the estimated localization systematic, can
be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240209263/quicklook/glg_healpix_all_bn240209263.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240209263/quicklook/glg_lc_medres34_bn240209263.gif"
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