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500 TeV gamma rays from Hercules X-1A signal (chance probability = .0002) with the 1.24 s period of Hercules X-1 has been observed using the Utah Fly's Eye. The signal's relatively long period and high shower energy conflict with some popular models of particle acceleration by pulsars. Optical and X-ray data suggest a picture in which energetic particles produce multi-TeV gamma rays by collisions with Hercules X-1's accretion disk.
Document ID
19850025620
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Baltrusaitis, R. M. (Utah Univ. Salt Lake City, UT, United States)
Cassiday, G. L. (Utah Univ. Salt Lake City, UT, United States)
Copper, R. (Utah Univ. Salt Lake City, UT, United States)
Elbert, J. W. (Utah Univ. Salt Lake City, UT, United States)
Gerhardy, P. R. (Utah Univ. Salt Lake City, UT, United States)
Loh, E. C. (Utah Univ. Salt Lake City, UT, United States)
Mizumoto, Y. (Utah Univ. Salt Lake City, UT, United States)
Sokolsky, P. (Utah Univ. Salt Lake City, UT, United States)
Sommers, P. (Utah Univ. Salt Lake City, UT, United States)
Steck, D. (Utah Univ. Salt Lake City, UT, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: 19th Intern. Cosmic Ray Conf - Vol. 1
Subject Category
Space Radiation
Report/Patent Number
OG-2.2-7
Report Number: OG-2.2-7
Accession Number
85N33933
Funding Number(s)
CONTRACT_GRANT: NSF PHY-84-25294
CONTRACT_GRANT: NSF PHY-82-01089
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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