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Search for UHE emission from 4U0115+63. [4U 0115+63]

Conference · · AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:5469262
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  1. The University of California, Irvine, California 92717 (USA)
  2. The University of California, Irvine, California 92717 (USA) The University of Maryland, College Park, Maryland 20742-4111 (USA) Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA) The University of Notre Dame, Notre Dame, Indiana 46556 (USA) George Mason University, Fairfax, Virginia 22030-4444 (USA) Argonne National Laboratory, Argonne, Illinois 60439-4843 (USA)
We report here the preliminary results of our observations of the sporadic X-binary system 4U0115+63. The CYGNUS air shower array has been collecting data since April 1986. No significant excess is seen from the direction of this source, nor any correlation with its 24-day orbital period. A 90% confidence-level upper limit on the flux from 4U0115+63 is 2.8{times}10{sup {minus}13} cm{sup {minus}2} s{sup {minus}1} above 50 TeV. This flux limit is considerably lower than those reported by other UHE experiments. Search for periodicity at the neutron star frequency is in progress.
OSTI ID:
5469262
Report Number(s):
CONF-9010289--
Conference Information:
Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 220:1
Country of Publication:
United States
Language:
English