TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2

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dc.creatorAnchordoqui, Luis A.
dc.creatorBeacom, John F.
dc.creatorGoldberg, Haim
dc.creatorPalomares-Ruiz, Sergio
dc.creatorWeiler, Thomas J.
dc.date2006-11-20
dc.date2007-02-05
dc.date.accessioned2026-07-07T11:00:13Z
dc.date.available2026-07-07T11:00:13Z
dc.descriptionTeV gamma-rays may provide significant information about high energy astrophysical accelerators. Such gamma-rays can result from the photo-de-excitation of PeV nuclei after their parents have undergone photo-disintegration in an environment of ultraviolet photons. This process is proposed as a candidate explanation of the recently discovered HEGRA source at the edge of the Cygnus OB2 association. The Lyman-alpha background is provided by the rich O and B stellar environment. It is found that (1) the HEGRA flux can be obtained if there is efficient acceleration at the source of lower energy nuclei; (2) the requirement that the Lorentz-boosted ultraviolet photons can excite the Giant Dipole resonance implies a strong suppression of the gamma-ray spectrum compared to an E_γ^{-2} behavior at energies \alt 1 TeV (some of these energies will be probed by the upcoming GLAST mission); (3) a TeV neutrino counterpart from neutron decay following helium photo-disintegration will be observed at IceCube only if a major proportion of the kinetic energy budget of the Cygnus OB2 association is expended in accelerating nuclei.
dc.descriptionTo be published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/astro-ph/0611581
dc.identifierhttp://arxiv.org/abs/astro-ph/0611581
dc.identifierPhys.Rev.D75:063001,2007
dc.identifierdoi:10.1103/PhysRevD.75.063001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187637
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleTeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
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