Precursors of gamma-ray bursts: a clue to the burster's nature

Details Precursors of gamma-ray bursts: a clue to the burster's nature Precursors of gamma-ray bursts: a clue to the burster's nature

2000-07-19

arxiv.org/abs/astro-ph/0007291v3

Astronomy and Astrophysics

Astrophysics

5 pages, 3 postscript figures, submitted to ApJ Lett

Scientific paper

10.1086/317278

In relativistic strongly magnetized winds outflowing from the fast-rotating compact progenitors of gamma-ray bursts (GRBs) there are three regions where powerful high-frequency emission may be generated: (i) the thermal photosphere, (ii) the region of the internal wind instability and (iii) the region of the wind interaction with an ambient gas. This results in a multicomponent structure of GRBs. The emission from the thermal photosphere may be observed as a weak precursor to the main burst. The precursor should have a blackbody-like spectrum with the mean energy of photons of $\sim 1$ MeV, and its intensity should be tens to hundreds of times smaller than that of the main GRB emission. Observations of such precursors with future $\gamma$-ray missions like GLAST can clarify the nature of bursters.

Affiliated with

Also associated with

No associations

Rating

Precursors of gamma-ray bursts: a clue to the burster's nature does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Precursors of gamma-ray bursts: a clue to the burster's nature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precursors of gamma-ray bursts: a clue to the burster's nature will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-631016