SIMBAD references

2017MNRAS.470..314H - Mon. Not. R. Astron. Soc., 470, 314-323 (2017/September-1)

Investigating the nature of the INTEGRAL gamma-ray bursts and sub-threshold triggers with Swift follow-up.

HIGGINS A.B., STARLING R.L.C., GOTZ D., MEREGHETTI S., WIERSEMA K., MACCARONE T., OSBORNE J.P., TANVIR N.R., O'BRIEN P.T., BIRD A.J., ROWLINSON A. and GEHRELS N.

Abstract (from CDS):

We explore the potential of the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) to improve our understanding of the low-fluence regime for explosive transients, such as Gamma-ray Bursts (GRBs). We probe the nature of the so-called 'WEAK' INTEGRAL triggers, when the gamma-ray instruments record intensity spikes that are below the usual STRONG significance thresholds. In a targeted Swift follow-up campaign, we observed 15 WEAK triggers. We find six of these can be classified as GRBs. This includes GRB 150305A, a GRB discovered from our campaign alone. We also identified a source coincident with one trigger, IGRW 151019, as a candidate active galactic nucleus. We show that real events such as GRBs exist within the INTEGRAL Burst Alert System (IBAS) WEAK trigger population. A comparison of the fluence distributions of the full INTEGRAL IBAS and Swift-BAT GRB samples showed that the two are similar. We also find correlations between the prompt gamma-ray and X-ray properties of the two samples, supporting previous investigations. We find that both satellites reach similar, low fluence levels regularly, although Swift is more sensitive to short, low-fluence GRBs.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): gamma-ray burst: general - gamma-ray burst: general

Nomenclature: Table 1: IGRW YYMMDD N=15.

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

Simbad objects: 91

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2020.09.28-01:47:02

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