Files
Document type
ArticleVersion
Published versionPublication date
All rights reserved
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/150830
Magic upper limits on the very high energy emission from gamma-ray bursts
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
During its first data cycle, between 2005 and the beginning of 2006, the fast repositioning system of the MAGIC telescope allowed the observation of nine different gamma-ray bursts as possible sources of very high energy γ-rays. These observations were triggered by alerts from Swift, HETE-2, and INTEGRAL; they started as quickly as possible after the alerts and lasted for several minutes, with an energy threshold varying between 80 and 200 GeV, depending on the zenith angle of the burst. No evidence for gamma signals was found, and upper limits for the flux were derived for all events using the standard analysis chain of MAGIC. For the bursts with measured redshifts, the upper limits are compatible with a power-law extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due to the scattering in the metagalactic radiation field.
Subject (English)
Citation
Citation
MAGIC Collaboration, et al. Magic upper limits on the very high energy emission from gamma-ray bursts. Astrophysical Journal. 2007. Vol. 667, num. 358-366. ISSN 0004-637X. [consulted: 6 of June of 2026]. Available at: https://hdl.handle.net/2445/150830