High energy neutrino flashes from far-ultraviolet and X-ray flares in gamma-ray bursts

Kohta Murase, Shigehiro Nagataki

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

The recent observations of bright optical and x-ray flares by the Swift satellite suggest these are produced by the late activities of the central engine. We study the neutrino emission from far-ultraviolet and x-ray flares under the late internal shock model. We show that the efficiency of pion production in the highest energy is comparable to or higher than the unity, and the contribution from such neutrino flashes to a diffuse very high energy neutrino background can be larger than that of prompt bursts if the total baryonic energy input into flares is comparable to the radiated energy of prompt bursts. These signals may be detected by IceCube and are very important because they have possibilities to probe the nature of flares (the baryon loading, the photon field, the magnetic field and so on).

Original languageEnglish (US)
Article number051101
JournalPhysical review letters
Volume97
Issue number5
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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