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Daily search for emission of ultra-high-energy radiation from point sources

1993; IOP Publishing; Volume: 405; Linguagem: Inglês

10.1086/172367

1538-4357

D. E. Alexandreas, G. E. Allen, D. Berley, S. D. Biller, R. L. Burman, D. R. Cady, F. Šforza, C.Y. Chang, D. G. Coyne, C. Dion, G. M. Dion, D. E. Dorfan, R. W. Ellsworth, S. J. Freedman, B. K. Fujikawa, J. A. Goodman, T. J. Haines, C. M. Hoffman, L. A. Kelley, S. R. Klein, D. Krakauer, P. W. Kwok, Xing-Tan Lu, D. E. Nagle, M. Potter, V. D. Sandberg, G. Sinnis, A. Shoup, M. J. Stark, P. R. Vishwanath, D. D. Weeks, D. A. Williams, Jingwen Wu, G. B. Yodh, W. Zhang, The CYGNUS Collaboration,

Neutrino Physics Research

view Abstract Citations (18) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Daily Search for Emission of Ultra--High-Energy Radiation from Point Sources Alexandreas, D. E. ; Allen, G. ; Berley, D. ; Biller, S. ; Burman, R. L. ; Cady, D. R. ; Cavalli-Sforza, M. ; Chang, C. Y. ; Coyne, D. ; Dion, C. ; Dion, G. M. ; Dorfan, D. ; Ellsworth, R. W. ; Freedman, S. J. ; Fujikawa, B. K. ; Goodman, J. A. ; Haines, T. J. ; Hoffman, C. M. ; Kelley, L. ; Klein, S. ; Krakauer, D. A. ; Kwok, P. W. ; Lu, X. -Q. ; Nagle, D. E. ; Potter, M. ; Sandberg, V. D. ; Sinnis, C. ; Shoup, A. ; Stark, M. J. ; Vishwanath, P. R. ; Weeks, D. D. ; Williams, D. A. ; Wu, J. -P. ; Yodh, G. B. ; Zhang, W. ; CYGNUS Collaboration Abstract A daily search for emission of ultra-high-energy radiation from astrophysical point sources using the CYGNUS extensive air shower array is described. The data set spans the period from 1986 April 4 to 1992 June 22. Fifty-one astrophysical objects have been examined, including Cyg X-3, Her X-1, the Crab, a number of gamma-ray and X-ray sources from the COS B and the fourth Uhuru catalogs, and several cataclysmic variables nearby galaxies, and radio pulsars. The observed daily number of events from the source directions are consistent with expected statistical fluctuations of the number of events from background cosmic rays. Publication: The Astrophysical Journal Pub Date: March 1993 DOI: 10.1086/172367 Bibcode: 1993ApJ...405..353A Keywords: Extraterrestrial Radiation; Gamma Ray Astronomy; Point Sources; Cataclysmic Variables; Galactic Radiation; Pulsars; Space Radiation; GAMMA RAYS: OBSERVATIONS full text sources ADS | data products SIMBAD (49) NED (6)