SIMBAD references

2008MNRAS.388..603L - Mon. Not. R. Astron. Soc., 388, 603-610 (2008/August-1)

The X-ray transient 080109 in NGC 2770: an X-ray flash associated with a normal core-collapse supernova.

LI L.-X.

Abstract (from CDS):

Although it is generally thought that long-duration gamma-ray bursts (LGRBs) are associated with core-collapse supernovae (SNe), so far only four pairs of GRBs and SNe with firmly established connection have been found. All the four GRB-SNe belong to special class of Type Ic - called the broad-lined SNe indicative of a large explosion energy, suggesting that only a small fraction of SNe Ibc have GRBs associated with them. This scheme has been refreshed by the discovery of a bright X-ray transient in NGC 2770 on 2008 January 9, which was followed by a rather normal Type Ib SN 2008D. In this paper, I argue that the transient 080109 is an X-ray flash (XRF, the soft version of a GRB) because of the following evidence. (1) The transient cannot be interpreted as a SN shock breakout event. (2) The GRB X-ray flare interpretation is not supported by the high-energy observation. I then show that XRF 080109 satisfies the well-known relation between the isotropic-equivalent energy and the peak spectral energy for LGRBs, which highly strengthens the XRF interpretation. Finally, I point out that the peak spectral energy of XRF 080109 and the maximum bolometric luminosity of SN 2008D agree with the Eγ,peak-LSN,max relationship of Li, strengthening the validity of the relationship. I speculate that events like XRF 080109 may occur at a rate comparable to SNe Ibc, and a soft X-ray telescope devoted to surveying for nearby X-ray flares will be very fruitful in discovering them.

Abstract Copyright: © 2008 The Author. Journal compilation © 2008 RAS

Journal keyword(s): supernovae: general - supernovae: individual: SN 2008D - gamma-rays: bursts

CDS comments: In Chap 4 : BZQ 0618+4620 = GB6 B0614+4621

Simbad objects: 15

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2020.02.28-04:58:11

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