| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB210324468 |
|
| T0 |
11:14:28 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
148.5300° |
Fermi_GBM |
| decl |
37.1800° |
Fermi_GBM |
| pos_error |
3.73e+00° |
Fermi_GBM |
| T90 |
31.745 s |
Fermi_GBM |
| T90_error |
1.379 s |
Fermi_GBM |
| T90_start |
11:14:28.724 UTC |
Fermi_GBM |
| fluence |
6.68e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
4.19e-08 erg/cm² |
Fermi_GBM |
| T100 |
32.469 s |
|
| GBM_located |
True |
|
| mjd |
59297.46837962963 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB210324468 |
| trigger_name |
bn210324468 |
| ra |
148.5300° |
| decl |
37.1800° |
| pos_error |
3.73e+00° |
| datum |
2021-03-24 |
| t_trigger |
11:14:28.212 UTC |
| T90 |
31.745 s |
| T90_error |
1.379 s |
| T90_start |
11:14:28.724 UTC |
| fluence |
6.68e-06 erg/cm² |
| fluence_error |
4.19e-08 erg/cm² |
| flux_1024 |
6.24e+00 erg/cm²/s |
| flux_1024_error |
3.00e-01 erg/cm²/s |
| flux_1024_time |
2.11e+01 erg/cm²/s |
| flux_64 |
8.84e+00 erg/cm²/s |
| flux_64_error |
1.30e+00 erg/cm²/s |
| GCN 29707 table |
|---|
| GRB_name |
GRB210324A |
| GCN_number |
29707 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
11:14:28 UTC |
| ra |
148.5000° |
| decl |
37.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29707
SUBJECT: GRB 210324A: Fermi GBM Final Real-time Localization
DATE: 21/03/24 11:24:43 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 11:14:28 UT on 24 Mar 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210324A (trigger 638277273.212466 / 210324468).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 148.5, Dec = 37.2 (J2000 degrees, equivalent to J2000 09h 54m, 37d 12'), with a statistical uncertainty of 3.1 degrees.
The angle from the Fermi LAT boresight is 76.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_skymap_all_bn210324468.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_healpix_all_bn210324468.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210324468/quicklook/glg_lc_medres34_bn210324468.gif
|
| GCN 29735 table |
|---|
| GRB_name |
GRB210324A |
| GCN_number |
29735 |
| Detection_method |
AstroSat CZTI |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 29735
SUBJECT: GRB 210324A: AstroSat CZTI detection
DATE: 21/03/30 11:05:00 GMT
FROM: Gaurav Waratkar at IIT Bombay
P. Sawant (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), S. Gupta
(IUCAA), V. Bhalerao (IITB), D. Bhattacharya (IUCAA), A. R. Rao
(IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI
collaboration:
Analysis of AstroSat CZTI data with the CIFT framework (Sharma et al, 2020,
arxiv:2011.07067) showed detection of a long GRB 210324A, which was also
detected by Fermi-GBM (GCN #29707).
The source was clearly detected in the 20-200 keV energy range. The light
curve showed multiple peaks of emission with the strongest peak at
2021-03-24 11:14:32 UT in two quadrants (out of four). The measured peak
count rate associated with the burst is 165 (+44, -21) cts/s above the
background in the combined data of four quadrants, with a total of 2373
(+286, -392) cts. The local mean background count rate was 490 (+3, -3)
cts/s. Using cumulative rates, we measure a T90 of 33 (+2, -5) s.
CZTI GRB detections are reported regularly on the payload site at
http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led
consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and
PRL. The Indian Space Research Organisation funded, managed and facilitated
the project.
|