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Phys. Rev. Lett. 81, 3579–3582 (1998)

Correlation between Compact Radio Quasars and Ultrahigh Energy Cosmic Rays

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Glennys R. Farrar*
Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855-0849

Peter L. Biermann
Max Planck Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany

See Also: Erratum

Received 18 June 1998; published in the issue dated 26 October 1998

Some proposals to account for the highest energy cosmic rays predict that they should point to their sources. We study the five highest energy events ( E>1020eV) and find they are all aligned with compact, radio-loud quasars. The probability that these alignments are coincidental is 0.005, given the accuracy of the position measurements and the rarity of such sources. The source quasars have redshifts between 0.3 and 2.2. If the correlation pointed out here is confirmed by further data, the primary must be a new hadron or one produced by a novel mechanism.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.3579
DOI:
10.1103/PhysRevLett.81.3579
PACS:
98.70.Sa, 14.60.Pq, 14.80.Ly, 98.54.Aj

*Present address: Department of Physics, New York University, New York, NY 10003.

See Also

Comment: C. M. Hoffman, Comment on “Correlation between Compact Radio Quasars and Ultrahigh Energy Cosmic Rays”, Phys. Rev. Lett. 83, 2471 (1999).

Erratum: Glennys R. Farrar and Peter L. Biermann, Erratum: Correlation between Compact Radio Quasars and Ultrahigh Energy Cosmic Rays [Phys. Rev. Lett. 81, 3579 (1998)], Phys. Rev. Lett. 83, 2478 (1999).

Reply: Glennys R. Farrar and Peter L. Biermann, Farrar and Biermann Reply:, Phys. Rev. Lett. 83, 2472 (1999).

 
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