1999A&AS..138..471B


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.27CET22:03:55

1999A&AS..138..471B - Astron. Astrophys., Suppl. Ser., 138, 471-472 (1999/September-0)

Chasing the association of single-pulse gamma-ray bursts and supernovae.

BONNELL J., NORRIS J. and WATANABE K.

Abstract (from CDS):

We explore the hypothesis, similar to one recently suggested by Bloom and colleagues, that some nearby supernovae are associated with smooth, single-pulse gamma-ray bursts, possibly having no emission above 300keV. We examine BATSE bursts with durations longer than 2s, fitting those which can be visually characterized as single-pulse events with a lognormal pulse model. The fraction of events that can be reliably ascertained to be temporally and spectrally similar to the exemplar, GRB 980425 - possibly associated with SN 1998bw - is 4/1573 or 0.25%. This fraction could be as high as 8/1573 (0.5%) if the dimmest bursts are included. Approximately 2% of bursts are morphologically similar to GRB 980425 but have emission above 300keV. A search of supernova catalogs containing 630 detections during BATSE's lifetime reveals only one burst (GRB 980425) within a 3-month time window and within the total 3σ BATSE error radius that could be associated with a type Ib/c supernova. Thus we find no further evidence to support a single-pulse GRB and SN Ib/c connection. We also find no tendency for any set of single-pulse GRBs to fall near the Supergalactic Plane, whereas SNe of type Ib/c do show this tendency - evidence that the two phenomena are not related.

Abstract Copyright:

Journal keyword(s): gamma-rays: bursts - stars: supernovae, general

Simbad objects: 8

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Number of rows : 8

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 980401B gB 02 20 -04.4           ~ 6 0
2 3B 930902B gB 06 49.9 +16 43           ~ 11 0
3 1B 920116B gB 09 21.0 +11 47           ~ 12 0
4 3B 940915 gB 14 45.3 +47 37           ~ 12 0
5 GRB 971022 gB 16 01 -41.3           ~ 7 0
6 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1628 2
7 SAX J1935.3-5252 X 19 35.3 -52 52           ~ 13 0
8 GRB 970517A gB 22 22 +19.1           ~ 8 1

    Equat.    Gal    SGal    Ecl

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2020.02.27-22:03:55

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