1999ApJ...522L.101N

Query : 1999ApJ...522L.101N

1999ApJ...522L.101N - Astrophys. J., 522, L101-L104 (1999/September-2)

Off-axis emission from the beamed afterglow of gamma-ray bursts and a possible interpretation of the slowly declining X-ray afterglow of GRB 980425.

NAKAMURA T.

Abstract (from CDS):

A formula is derived for off-axis emissions from the beamed afterglow of gamma-ray bursts in a synchrotron model. The formula is applied to inhomogeneous circumstellar matter obeying n∝r–2, which is also suggested for SN 1998bw/GRB 980425. The slow decline rate as well as the X-ray flux, which is similar to the observed values, are obtained for an appropriate choice of parameters so that the association of GRB 980425 with SN 1998bw is further strengthened.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts - Stars: Supernovae: Individual: Alphanumeric: SN 1998bw

CDS comments: Sources S1 and S2 = [PAA99] S1 and S2

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 268 0
2 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
3 SAX J1935.0-5248 X 19 35.0 -52 48           ~ 13 0
4 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2
5 SAX J1935.3-5252 X 19 35.3 -52 52           ~ 13 0
6 GRB 980519 gB 23 22 21.5 +77 15 43           ~ 203 0

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