1999A&AS..138..453M

Query : 1999A&AS..138..453M

1999A&AS..138..453M - Astron. Astrophys., Suppl. Ser., 138, 453-454 (1999/September-0)

Broad-band spectral evolution of GRB afterglows.

MASETTI N., PIAN E., PALAZZI E., AMATI L., GALAMA T.J., NICASTRO L., VREESWIJK P.M., FRONTERA F. and VAN PARADIJS J.

Abstract (from CDS):

Quasi-simultaneous Spectral Energy Distributions (SEDs) at different epochs of four among the most intensively observed Gamma-Ray Burst (GRB) afterglows have been constructed in order to investigate and compare the temporal evolution of their multiwavelength emission. The data suggest that generally the peak frequency moves toward lower frequencies with time. SED local maxima in the optical/IR range are present in some cases, possibly due to dust absorption within the host galaxy.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - gamma-rays: bursts

Simbad objects: 4

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Number of rows : 4
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 970228 gB 05 01 46.7 +11 46 53           ~ 650 1
2 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 883 1
3 GRB 980329 gB 07 02 41 +38 50.7           ~ 276 1
4 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 453 1

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