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Title: Tracing cosmic accelerators with decaying neutrons
Authors: Moharana, Reetanjali
Gupta, Nayantara
Keywords: Radio sources
cosmic rays
Issue Date: Jul-2010
Publisher: The American Physical Society
Citation: Physical Review D, 2010, Vol.82, p023003
Abstract: Ultrahigh-energy neutrons and pions are likely to be produced in particle interactions inside cosmic ray sources and subsequently decay to neutrinos and other secondary particles [π±→μ±νμ(ν¯μ),μ±→e±ν¯μ(νμ)νe(ν¯e)]. In high magnetic fields of the cosmic acceleration sites, the ultrahigh-energy-charged particles may lose energy significantly due to synchrotron radiation before decay. We show that for gamma-ray bursts in the internal shock model, the flux of very high-energy antineutrinos (ν¯e) produced from decaying ultrahigh-energy neutrons can be more than the total neutrino flux produced in pion decay depending on the values of their Lorentz factors, luminosities, and variability times.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 1550-7998
1550-2368 (Online)
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Copyright: 2010 The American Physical Society
Appears in Collections:Research Papers (A&A)

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