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! Circulars over Kafka, Heartbeat Topic, and Schema v4.1.0. See news and announcements

GCN Circular 31672

Subject
GRB 220304A: Fermi GBM Final Real-time Localization
Date
2022-03-04T05:39:15Z (3 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 05:28:58 UT on 4 Mar 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220304A (trigger 668064543.786552 / 220304228).

The on-ground calculated location, using the Fermi GBM trigger data, is RA = 245.0, Dec = -35.7 (J2000 degrees, equivalent to J2000 16h 19m, -35d 42'), with a statistical uncertainty of 1.0 degrees.

The angle from the Fermi LAT boresight is 145.0 degrees.

The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220304228/quicklook/glg_skymap_all_bn220304228.png

The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220304228/quicklook/glg_healpix_all_bn220304228.fit

The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220304228/quicklook/glg_lc_medres34_bn220304228.gif
Looking for U.S. government information and services? Visit USA.gov