Chandra Observations of Galaxies Correlated with Ultra-High Energy Cosmic Rays

Details Chandra Observations of Galaxies Correlated with Ultra-High Energy Cosmic Rays Chandra Observations of Galaxies Correlated with Ultra-High Energy Cosmic Rays

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.215z&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Physics

Galaxies

Scientific paper

Correlations have been observed between the highest energy cosmic rays observed by the Pierre Auger collaboration, and galaxies in the Veron-Cetty Veron catalog of Quasars and AGN. Optical observations indicate that only 14 of the 21 correlated VCV galaxies are AGN. Furthermore, an independent correlation study with luminous infrared galaxies (LIRGs) also shows significant correlations. This opens the exciting possibility of multiple source types, e.g., AGN and systems associated with star formation such as GRBs or magnetars. However, many LIRGs also harbor AGN. We report on the Chandra observations of the galaxies which are correlated with UHECRs but have not been previously classified as AGN and the implications of these detections on the possible sources of UHECRs.

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