Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..586..617d&link_type=abstract
RELATIVISTIC ASTROPHYSICS: 20th Texas Symposium. AIP Conference Proceedings, Volume 586, pp. 617-619 (2001).
Astronomy and Astrophysics
Astrophysics
Gamma-Ray Sources, Gamma-Ray Bursts, Cosmology
Scientific paper
Initially, the spectra of comptonized radiation from Gamma-Ray Bursts (GRBs) have a broad maximum above 1 TeV [1], so that the VHE photons are strongly absorbed by infrared background radiation and cannot be observed from a source at cosmological distance [2]. On the other hand, we find that the comptonized radiation may be reprocessed into sub-TeV domain via electromagnetic cascade which develops after two-photon absorption of VHE photons by soft X-rays and optical quanta scattered by the surrounding gas. In this case, the VHE photons attain a large dispersion of arrival times, so that the bulk of VHE emission is delayed by a few minutes with respect to the beginning of GRB. The proposed theory can be applied to the delayed multi-GeV photons observed by EGRET as well as to the recent MILAGRO data [3,4]. .
Derishev Evgeny V.
Kocharovsky Vitaly V.
Kocharovsky Vl. V.
No associations
LandOfFree
Cascaded sub-TeV emission from Gamma-Ray Bursts: Origin and observational tests 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 Cascaded sub-TeV emission from Gamma-Ray Bursts: Origin and observational tests, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cascaded sub-TeV emission from Gamma-Ray Bursts: Origin and observational tests will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1100692