תקציר
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.
| שפה מקורית | אנגלית |
|---|---|
| עמודים (מ-עד) | L91-L94 |
| כתב עת | Astrophysical Journal |
| כרך | 625 |
| מספר גיליון | 2 II |
| מזהי עצם דיגיטלי (DOIs) | |
| סטטוס פרסום | פורסם - 1 יוני 2005 |
| פורסם באופן חיצוני | כן |
הערה ביבליוגרפית
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).