2001ApJ...551L..63G

Query : 2001ApJ...551L..63G

2001ApJ...551L..63G - Astrophys. J., 551, L63-L66 (2001/April-2)

Chromatic signatures in the microlensing of gamma-ray burst afterglows.

GRANOT J. and LOEB A.

Abstract (from CDS):

We calculate the radial surface brightness profile of the image of a gamma-ray burst (GRB) afterglow. The afterglow spectrum consists of several power-law segments separated by breaks. The image profile changes considerably across each of the spectral breaks. It also depends on the density profile of the ambient medium into which the GRB fireball propagates. Gravitational microlensing by an intervening star can resolve the afterglow image. We calculate the predicted magnification history of GRB afterglows as a function of observed frequency and ambient medium properties. We find that intensive monitoring of a microlensed afterglow light curve can be used to reconstruct the parameters of the fireball and its environment and provide constraints on particle acceleration and magnetic field amplification in relativistic blast waves.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts - Cosmology: Gravitational Lensing

Simbad objects: 1

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Number of rows : 1
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 000301C gB 16 20 18.5 +29 26 35           ~ 361 0

Query : 2001ApJ...551L..63G

Basic data :
GRB 000301C -- Gamma-ray Burst
Other object types: otypes_help 		gB (GRB,XRF)
ICRS coord. (ep=J2000) : 		16 20 18.5 +29 26 35 [ ] D 2000A&A...359L..23M
FK4 coord. (ep=B1950 eq=1950) : 		16 18 18.9 +29 33 41 [ ]
Gal coord. (ep=J2000) : 		048.6886 +44.3454 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 241248 [~] / z(~) 2.040 [~] / cz 611577 [~]
   D 2000A&A...364L..54A
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Identifiers (2) :
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GRB 000301C XRF 000301C

References (361 between 1850 and 2026) (Total 361)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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