Zeroing in on the sources of Ultrahigh Energy Cosmic Rays

Details Zeroing in on the sources of Ultrahigh Energy Cosmic Rays Zeroing in on the sources of Ultrahigh Energy Cosmic Rays

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2618f&link_type=abstract

Chandra proposal ID #10700883

Physics

Scientific paper

Correlations have been observed between the highest energy cosmic rays and galaxies in the Veron-Cetty Veron catalog of Quasars and AGN. However only 14 of the 21 correlated VCV galaxies are optical AGN, and a correlation with luminous infrared galaxies has been found. This suggests the exciting possibility that UHECRs are produced by both AGN and systems associated with star formation such as GRBs or magnetars. A crucial question is therefore whether correlated galaxies which have not been identified as AGN, are in fact AGN. The Chandra observation will answer this question. Key information that will be determined by this observation is the X-ray luminosity and the spectrum of the correlated galaxies, to understand whether those which accelerate have unusual properties.

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