GRB 070707: the first short gamma-ray burst observed by INTEGRAL
S. McGlynn (1,2), S. Foley (1), S. McBreen (3), L. Hanlon (1), R., O'Connor (1), A. Martin Carrillo (1), B. McBreen (1) ((1) University, College Dublin, (2) Royal Institute of Technology (KTH), Stockholm (3) MPE, Garching)

TL;DR
This paper reports the first observation of a short gamma-ray burst by INTEGRAL, detailing its spectral and temporal properties, and comparing it with other short GRBs to understand its characteristics and implications for relativistic jet models.
Contribution
It presents the first INTEGRAL observation of a short GRB, providing detailed spectral and temporal analysis and estimating the Lorentz factor, expanding understanding of short GRB properties.
Findings
GRB 070707 had a T_90 duration of 0.8s.
The spectrum was best fit by a power-law with photon index -1.19.
The spectral lag was 20 +/- 5ms, typical for short bursts.
Abstract
INTEGRAL has observed 47 long-duration GRBs (T_90 > 2s) and 1 short-duration GRB (T_90 < 2s) in five years of observation since October 2002. This work presents the properties of the prompt emission of GRB 070707, which is the first short hard GRB observed by INTEGRAL. The spectral and temporal properties of GRB 070707 were determined using the two sensitive coded-mask gamma-ray instruments on board INTEGRAL, IBIS and SPI. The T_90 duration was 0.8s, and the spectrum of the prompt emission was obtained by joint deconvolution of IBIS and SPI data to yield a best fit power-law with photon index alpha = -1.19 +0.14 -0.13, which is consistent with the characteristics of short-hard gamma-ray bursts. The peak flux over 1 second was 1.79 photons/cm^2/s and the fluence over the same interval was 2.07 x 10^-7 erg/cm^2 in the energy range 20-200keV. The spectral lag measured between 25-50keV and…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
