Detection of 33.8 ms X-ray pulsations in SAX J0635+0533

Abstract

We revisited the BeppoSAX observation of SAX J0635+0533, suggested as a possible counterpart to the gamma-ray source 2EG J0635+0521. We have discovered a 33.8 ms pulsation from the source and derived an improved position, consistent with the location of the Be star proposed as a binary companion. We interpret the periodicity as the spin period of a neutron star in a binary system with a Be companion.

13 pages, LaTeX, 5 PS figures, requires aasms4,apjfonts,psfig styles, accepted for publication on ApJ Letters

References in corpus (1)

• Discovery of a Hard X-Ray Source, SAX J0635+0533, in the Error Box of the Gamma-Ray Source 2EG 0635+0521

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