An off-axis model of GRB 031203

Enrico Ramirez-Ruiz; Jonathan Granot; Chryssa Kouveliotou; S. E. Woosley; Sandy K. Patel; Paolo A. Mazzali

doi:10.1086/431237

An off-axis model of GRB 031203

Enrico Ramirez-Ruiz, Jonathan Granot, Chryssa Kouveliotou, S. E. Woosley, Sandy K. Patel, Paolo A. Mazzali

Research output: Contribution to journal › Review article › peer-review

Abstract

The low-luminosity radio emission of the unusually faint GRB 031203 has been argued to support the idea of a class of intrinsically subenergetic gamma-ray bursts (GRBs), currently comprising two members. While low-energy GRBs probably exist, we show that the collective prompt and multiwavelength observations of the afterglow of GRB 031203 do not necessarily require a subenergetic nature for that event. In fact, the data are more consistent with a typical, powerful GRB seen at an angle of about twice the opening angle of the central jet. The intrinsic peak energy E_p of GRB 031203 then becomes ∼2 MeV, similar to that of many other GRBs.

Original language	English
Pages (from-to)	L91-L94
Journal	Astrophysical Journal
Volume	625
Issue number	2 II
DOIs	https://doi.org/10.1086/431237
State	Published - 1 Jun 2005
Externally published	Yes

Bibliographical note

Funding Information:
This work is supported by IAS and NASA through Chandra Fellowship award PF3-40028 (E. R.-R.) and by the DoE under contract DE-AC03-76SF00515 (J. G.). The authors acknowledge benefits from collaboration within the RTN “GRBs: An Enigma and a Tool.” At UCSC, this research was supported by the NSF (AST 02-06111) and NASA (NAG5-12036).

Keywords

Gamma rays: bursts
Hydrodynamics
ISM: jets and outflows
Supernovae: general Online material: color figures

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10.1086/431237

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abstract = "The low-luminosity radio emission of the unusually faint GRB 031203 has been argued to support the idea of a class of intrinsically subenergetic gamma-ray bursts (GRBs), currently comprising two members. While low-energy GRBs probably exist, we show that the collective prompt and multiwavelength observations of the afterglow of GRB 031203 do not necessarily require a subenergetic nature for that event. In fact, the data are more consistent with a typical, powerful GRB seen at an angle of about twice the opening angle of the central jet. The intrinsic peak energy Ep of GRB 031203 then becomes ∼2 MeV, similar to that of many other GRBs.",

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note = "Funding Information: This work is supported by IAS and NASA through Chandra Fellowship award PF3-40028 (E. R.-R.) and by the DoE under contract DE-AC03-76SF00515 (J. G.). The authors acknowledge benefits from collaboration within the RTN “GRBs: An Enigma and a Tool.” At UCSC, this research was supported by the NSF (AST 02-06111) and NASA (NAG5-12036).",

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AU - Mazzali, Paolo A.

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An off-axis model of GRB 031203

Abstract

Bibliographical note

Keywords

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