Search for UHE emission from 4U0115+63

Details Search for UHE emission from 4U0115+63 Search for UHE emission from 4U0115+63

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..220..167a&link_type=abstract

High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Volume 220, pp. 167-171 (1991).

Astronomy and Astrophysics

Astronomy

X-Ray Binaries, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

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 2.8×10-13 cm-2 s-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.

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