NASA NTRS · 19910062410
Search for TeV emission from 4U 0115 + 63
Abstract
While previous studies of the X-ray binary 4U 0115+63 suggest it to be a steady, TeV gamma-ray emitter, with pulses at the 3.6-sec neutron-star period, the present analysis of data obtained on 60 nights over a 4-yr period with an imaging gamma-ray telescope has uncovered no indication of TeV signals. The derived upper limit of 1 x 10 to the -11th/sq-cm sec, for gamma-rays of energy above 0.7 TeV, is noted to be significantly below the previously reported fluxes.
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Macomb, D. J., Cawley, M. F., Fegan, D. J., Hillas, A. M., Kwok, P. W.. 1991-08-01. Search for TeV emission from 4U 0115 + 63. https://ntrs.nasa.gov/citations/19910062410
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