Spectra of Poynting-flux powered GRB outflows

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dc.creatorGiannios, D.
dc.creatorSpruit, H. C.
dc.date2004-01-08
dc.date2004-10-25
dc.date.accessioned2026-07-07T11:29:19Z
dc.date.available2026-07-07T11:29:19Z
dc.descriptionWe investigate the production of the gamma-ray spectrum of a Poynting-flux dominated GRB ouflow. The very high magnetic field strengths (super-equipartition) in such a flow lead to very efficient synchrotron emission. In contrast with internal shocks, dissipation of magnetic energy by reconnection is gradual and does not produce the spectrum of cooling electrons associated with shock acceleration.We show that a spectrum with a break in the BATSE energy range is produced, instead, if the magnetic dissipation heats a small (\sim 10^{-4}) population of electrons.
dc.descriptionSection 3 revised, typos corrected, accepted for publication in A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/0401109
dc.identifierhttp://arxiv.org/abs/astro-ph/0401109
dc.identifierAstron.Astrophys.430:1-7,2005
dc.identifierdoi:10.1051/0004-6361:20047033
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196674
dc.subjectAstrophysics
dc.titleSpectra of Poynting-flux powered GRB outflows
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