2020A&A...640A...8B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST09:50:56

2020A&A...640A...8B - Astronomy and Astrophysics, volume 640A, 8-8 (2020/8-1)

A physical background model for the Fermi Gamma-ray Burst Monitor.

BILTZINGER B., KUNZWEILER F., GREINER J., TOELGE K. and BURGESS J.M.

Abstract (from CDS):

We present the first physically motivated background model for the Gamma-ray Burst Monitor (GBM) on board the Fermi satellite. Such a physically motivated background model has the potential to significantly improve the scientific output of Fermi/GBM, as it can be used to improve the background estimate for spectral analysis and localization of gamma-ray bursts (GRBs) and other sources. Additionally, this model can also lead to detections of new transient events, since long and weak, or slowly rising, events do not activate one of the existing trigger algorithms. In this paper we show the derivation of such a physically motivated background model, which includes the modeling of the different background sources and the correct handling of the response of GBM. While the goal of the paper is to introduce the model rather than developing a transient search algorithm, we demonstrate the ability of the model to fit the background seen by GBM by showing the following four applications for (1) a canonical GRB, (2) the ultra-long GRB 091024, (3) the V404 Cygni outburst in June 2015, and (4) the ultra-long GRB 130925A.

Abstract Copyright: © B. Biltzinger et al. 2020

Journal keyword(s): instrumentation: detectors - methods: data analysis - methods: statistical - gamma rays: general

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GRB 130925A gB 02 44 42.38 -26 09 15.8           ~ 118 0
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5652 4
3 GRB 110920A gB 05 50 +38.8           ~ 21 0
4 V* V404 Cyg HXB 20 24 03.820 +33 52 01.90 14.50 14.20 12.7     K0IV 1103 0
5 GRB 091024 gB 22 37 +56.9           ~ 109 0

    Equat.    Gal    SGal    Ecl

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2020.10.24-09:50:56

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