2005ApJ...628L..25F

Query : 2005ApJ...628L..25F

2005ApJ...628L..25F - Astrophys. J., 628, L25-L28 (2005/July-3)

Early optical-infrared emission from GRB 041219a: neutron-rich internal shocks and a mildly magnetized external reverse shock.

FAN Y.Z., ZHANG B. and WEI D.M.

Abstract (from CDS):

Very early optical and near-infrared emission was discovered to have accompanied the long gamma-ray burst GRB 041219a. Here we show that the optical-IR flash tracking the gamma-ray light curve during the prompt emission can be understood as emission from neutron-rich internal shocks, as has been suggested by Fan & Wei. The early Ks-band afterglow light curve after the prompt phase can be well modeled as the superposition of a reverse and a forward shock component. The radio data also support the reverse-shock interpretation.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts - ISM: Jets and Outflows - Radiation Mechanisms: Nonthermal

CDS comments: Parag. 3 : GRB 021219a is a misprint for GRB 041219a

Simbad objects: 3

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Number of rows : 3
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 041219 gB 00 24 27.7 +62 50 34           ~ 231 1
2 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 363 1
3 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1

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