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Astrophysics > High Energy Astrophysical Phenomena

arXiv:1606.01816 (astro-ph)
[Submitted on 6 Jun 2016 (v1), last revised 18 Jul 2016 (this version, v3)]

Title:Neutrino lighthouse powered by Sagittarius A* disk dynamo

Authors:Luis A. Anchordoqui
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Abstract:We show that the subset of high energy neutrino events detected by IceCube which correlate with the Galactic center (within uncertainties of their reconstructed arrival directions) could originate in the collisions of protons accelerated by the Sagittarius (Sgr) A* disk dynamo. Under very reasonable assumptions on source parameters we demonstrate that the supermassive black hole at the center of the Galaxy could launch protons and nuclei with multi PeV energies. Acceleration of these particles in a period of seconds up to Lorentz factors of \sim 10^7 is possible by means of the Blandford-Znajek mechanism, which wires the spinning magnetosphere of Sgr A* as a Faraday unipolar inductor. During the acceleration process the \sim PeV progenitors of \sim 50 TeV neutrinos radiate curvature photons in the keV energy range. We show that IceCube neutrino astronomy with photon tagging on the Chandra X-ray Observatory could provide a valuable probe for the Blandford-Znajek acceleration mechanism. We also argue that EeV neutrinos, which may be produced in a similar fashion during the merging of binary black holes, could become the smoking gun for particle acceleration in a one-shot boost.
Comments: v1- 5 pages revtex; 1 figure. arXiv admin note: text overlap with arXiv:1107.2119 by other authors; v2 references added; v3 version to be published in PRD
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1606.01816 [astro-ph.HE]
  (or arXiv:1606.01816v3 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.1606.01816
Journal reference: Phys. Rev. D 94, 023010 (2016)
Related DOI: https://doi.org/10.1103/PhysRevD.94.023010

Submission history

From: Luis Anchordoqui [view email]
[v1] Mon, 6 Jun 2016 16:29:23 UTC (141 KB)
[v2] Thu, 16 Jun 2016 18:53:06 UTC (143 KB)
[v3] Mon, 18 Jul 2016 22:03:32 UTC (146 KB)
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