High Energy Radiation From Black Holes: Gamma Rays, Cosmic Rays, and Neutrinos

Details High Energy Radiation From Black Holes: Gamma Rays, Cosmic Rays, and Neutrinos High Energy Radiation From Black Holes: Gamma Rays, Cosmic Rays, and Neutrinos

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21537201d&link_type=abstract

American Astronomical Society, AAS Meeting #215, #372.01; Bulletin of the American Astronomical Society, Vol. 42, p.580

Astronomy and Astrophysics

Astronomy

Scientific paper

Bright gamma-ray flares observed from sources far beyond our Milky Way Galaxy are best explained if enormous amounts of energy are liberated by black holes. The highest- energy particles in nature--the ultra-high-energy cosmic rays--cannot be confined by the Milky Way's magnetic field, and must originate from sources outside our Galaxy. In this talk, I summarize the themes of our book, just published by Princeton University Press, with the same title as this talk. We examine whether the Blandford-Znajek mechanism for energy extraction from rotating black holes can explain the differences between gamma-ray blazars and radio-quiet AGNs, Fermi evidence for cosmic ray acceleration in blazars and GRBs, and whether black holes accelerate the ultra-high energy cosmic rays.

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