Swift Observations of GRB 211024A

M. Perri (SSDC and INAF-OAR) for the Swift team

1. Introduction

Tohuvavohu et al. (GCN Circ. 31006) reported the GRB detection. Swift/BAT did not trigger on GRB 211024A (T0: 2021-10-24T01:34:11.4 UTC, Fermi/GBM trigger # 656732056, GCN Circ. 30962), also detected by GECAM-B (GCN Circ. 30974). Table 1 contains the best reported positions from Swift.

Table 2 is a summary of GCN Circulars about this GRB from observatories other than Swift.

2. BAT Observations and Analysis

BAT refined results are not available.

3. XRT Observations and Analysis

Analysis of the initial XRT data was reported by Kumar et al. (GCN Circ. 31017).

4. UVOT Observations and Analysis

UVOT results are not available.

Figure 1. The BAT light curve is not available.

RA (J2000)	Dec (J2000)	Error	Note	Reference
01h52m12.61s	-06°58'23"	6'	BAT-GUANO	Tohuvavohu et al. GCN Circ. 31006

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Optical	Lipunov et al.	30963	Fermi GRB 211024A: Global MASTER-Net observations report	MASTER
Optical	Kumar et al.	31014	Possible afterglow candidate from GIT	GROWTH-India Tel.	possible detection
Optical	Ghosh et al.	31027	1.3m DFOT observations	DFOT
Optical	Imai et al.	31037	MITSuME Akeno optical observation	MITSuME Akeno
Gamma-ray	Fermi	30962	Fermi GBM Final Real-time Localization	Fermi GBM
Gamma-ray	Xiao et al.	30974	GECAM detection	GECAM
Gamma-ray	Poolakkil and Meegan	31011	Fermi GBM detection	Fermi GBM	Epeak=145±27 keV T90=0.06 seconds Fluence=1.95±0.28x10-7erg cm-2 (brighter than 28% of short GRBs)

Table 2. Summary of GCN Circulars from other observatories sorted by band and then circular number.

November 5, 2021