Observational limits on inverse Compton processes in gamma‐ray bursts
Identifieur interne : 000126 ( Main/Exploration ); précédent : 000125; suivant : 000127Observational limits on inverse Compton processes in gamma‐ray bursts
Auteurs : Tsvi Piran [Israël] ; Re'Em Sari [Israël, États-Unis] ; Yuan-Chuan Zou [Israël]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2009-03-11.
English descriptors
Abstract
Inverse Compton (IC) scattering is one of two viable mechanisms that can produce prompt non‐thermal soft gamma‐ray emission in gamma‐ray bursts. IC requires low‐energy seed photons and a population of relativistic electrons that upscatter them. The same electrons will upscatter the gamma‐ray photons to even higher energies in the TeV range. Using the current upper limits on the prompt optical emission, we show that under general conservative assumption the IC mechanism suffers from an ‘energy crisis’. Namely, IC will overproduce a very high energy component that would carry much more energy than the observed prompt gamma‐rays, or alternatively it will require a low‐energy seed that is more energetic than the prompt gamma‐rays. Our analysis is general, and it makes no assumptions on the specific mechanism that produces the relativistic electron population.
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DOI: 10.1111/j.1365-2966.2008.14198.x
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IC requires low‐energy seed photons and a population of relativistic electrons that upscatter them. The same electrons will upscatter the gamma‐ray photons to even higher energies in the TeV range. Using the current upper limits on the prompt optical emission, we show that under general conservative assumption the IC mechanism suffers from an ‘energy crisis’. Namely, IC will overproduce a very high energy component that would carry much more energy than the observed prompt gamma‐rays, or alternatively it will require a low‐energy seed that is more energetic than the prompt gamma‐rays. Our analysis is general, and it makes no assumptions on the specific mechanism that produces the relativistic electron population.</div></front></TEI><affiliations><list><country><li>Israël</li><li>États-Unis</li></country></list><tree><country name="Israël"><noRegion><name sortKey="Piran, Tsvi" sort="Piran, Tsvi" uniqKey="Piran T" first="Tsvi" last="Piran">Tsvi Piran</name></noRegion><name sortKey="Sari, Re Em" sort="Sari, Re Em" uniqKey="Sari R" first="Re'Em" last="Sari">Re'Em Sari</name><name sortKey="Zou, Yuan Huan" sort="Zou, Yuan Huan" uniqKey="Zou Y" first="Yuan-Chuan" last="Zou">Yuan-Chuan Zou</name></country><country name="États-Unis"><noRegion><name sortKey="Sari, Re Em" sort="Sari, Re Em" uniqKey="Sari R" first="Re'Em" last="Sari">Re'Em Sari</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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