| Summary table |
|---|
| Variable |
Value |
Source |
| T0 |
23:27:37 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
219.8000° |
GCN_circulars,Fermi GBM final loc |
| decl |
15.3000° |
GCN_circulars,Fermi GBM final loc |
| GBM_located |
True |
|
| mjd |
60673.97751157408 |
GCN_circulars,Fermi GBM final loc |
| GCN 38716 table |
|---|
| GRB_name |
GRB241229C |
| GCN_number |
38716 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
23:27:37 UTC |
| ra |
219.8000° |
| decl |
15.3000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 38716
SUBJECT: GRB 241229C: Fermi GBM Final Real-time Localization
DATE: 24/12/29 23:38:14 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely SHORT GRB
At 23:27:37 UT on 29 Dec 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 241229C (trigger 757207662.335616 / 241229978).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 219.8, Dec = 15.3 (J2000 degrees, equivalent to J2000 14h 39m, 15d 18'), with a statistical uncertainty of 16.2 degrees.
The angle from the Fermi LAT boresight is 12.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241229978/quicklook/glg_skymap_all_bn241229978.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/bn241229978/quicklook/glg_healpix_all_bn241229978.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn241229978/quicklook/glg_lc_medres34_bn241229978.gif
|
| GCN 38718 table |
|---|
| GRB_name |
GRB241229C |
| GCN_number |
38718 |
| Detection_method |
Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 38718
SUBJECT: Fermi Gamma-ray Burst Monitor trigger 757207662/241229978 (GRB 241229C) is not a GRB
DATE: 24/12/30 00:22:47 GMT
FROM: Ava Myers at NASA GSFC
A. Myers (NPP/GSFC) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:
"The Fermi Gamma-ray Burst Monitor (GBM) trigger 757207662/241229978 at 23:27:37.34 UT
on 29 December 2024, tentatively classified as a GRB, is in fact not due
to a GRB. This trigger is likely due to a solar flare." |