A. D'Ai (INAF-IASFPA) for the Swift team
Vianello et al. (GCN Circ. 16048) reported the GRB detection. At 04:19:54.47 UT on March 30, 2014, Fermi-LAT detected high-energy emission from GRB 140330A, which was also detected by Fermi-GBM (trigger 417845997). Table 1 contains the best reported positions from Swift, and the latest XRT position can be viewed at http://www.swift.ac.uk/xrt_positions.
Table 2 is a summary of GCN Circulars about this GRB from observatories other than Swift.
BAT did not observe this burst.
Analysis of the initial XRT data was reported by D'Ai et al. (GCN Circ. 29372).
We have analysed 3.2 ks of XRT data for the Fermi/LAT-detected burst GRB 140330A, from 102.0 ks to 120.0 ks after the Fermi/LAT trigger.
The data are entirely in Photon Counting (PC) mode.
The source has a mean count rate of 2.4 x 1
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.8 (+0.7, -0.5). The best-fitting absorption column is 9 (+17, -5) x 1
A summary of the PC-mode spectrum is thus:
Total column: 9 (+17, -5) x 1
Galactic foreground: 3.5 x 1
Excess significance: <1.6 σ
Photon index: 1.8 (+0.7, -0.5)
The results of the XRT team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020372.
UVOT results are not available.
Figure 1. The BAT light curve is not available.
Figure 2. The XRT light curve.
Any data from a crosshatched region are not included in the fit.
RA (J2000) | Dec (J2000) | Error | Note | Reference |
---|---|---|---|---|
2 |
-64°11'17.4" | 4.0" | XRT-refined | D'Ai et al. GCN Circ. 29372 |
Band | Authors | GCN Circ. | Subject | Observatory | Notes |
---|---|---|---|---|---|
Gamma-ray | Vianello et al. | 16048 | Fermi-LAT Detection | Fermi LAT | |
Gamma-ray | Golenetskii et al. | 16056 | Konus-Wind observation | Konus-Wind | Fluence=3.9(-0.5,+0.6)x1 |
Gamma-ray | Pittori et al. | 16058 | intense and persistent gamma-ray emission detected by AGILE |
AGILE | |
Gamma-ray | Vianello et al. | 16062 | Retraction of the Fermi/LAT high-energy counterpart for GRB 140330A |
Fermi LAT | |
Gamma-ray | Pelassa et al. | 16066 | Fermi GBM observation | Fermi GBM | Fluence=5.6±0.3x1 (5 |
January 30, 2021