Menu

GRB 240824B

Time: 13:11:16.7
Trigger Number: BAT/GUANO
Burst Advocate: Brad Cenko

BAT Data:

RA: a 17.835
01:11:20.4
Dec: a 2.620
02:37:12.0
90% Error Radius: b 3
T90: c n/a
Fluence: d n/a (n/a)
1s Peak Photon Flux: e n/a (n/a)
Photon Index: f n/a (n/a)

90% error in parentheses,
a J2000; b arcmin; c seconds; d 10-7 erg/cm2 (15-150 keV); e ph/cm2/sec (15-150 keV); f PL = simple power-law, CPL = cutoff power-law (15-150 keV)

XRT Data:

RA: a 01:11:20.82
Dec: a 02:36:36.0
90% Error Radius: b 4.5
Time to First Observation: c 27700
Early Flux: d n/a
11 Hour Flux: d 0.018999392
24 Hour Flux: d 0.001212784
Initial Temporal Index: -3.527
Spectral Index (Gamma): 2.039623243
Column Density (NH): e 0.335919005275589

Note: Please be aware that only the very basic temporal and spectral quantities are reported here. You are strongly encouraged to see the referenced GCN circulars for full details.
a J2000; b arcsec; c seconds; d 10-11 erg/cm2/s (0.3-10 keV); e 1021 cm-2

UVOT Data:

RA: a n/a
Dec: a n/a
90% Error Radius: b n/a
Time to First Observation: c n/a
V Magnitude: n/a
Other Filter Magnitudes: n/a

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
Host Galaxy:
Other Observatory Detections:
Fermi (GBM), MAXI

Comments:

BAT: Swift/BAT did not localize GRB 240824B onboard (T0: 2024-08-24T13:11:16.7 UTC, Fermi Trigger 746197881, MAXI GCN 37261). In a ground search of a 10 s event file, available due to a subthreshold trigger onboard. The GRB was detected at a S/N of 8.5 in a single 10 s image. The duration in the rates data is ~16 s.

References:

BAT: GCN 37267
XRT: GCN 37270; Evans et al., 2009, MNRAS, 397, 1177
UVOT:
Radio:
Redshift:
Host:
Other: