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

G. Cusumano (1) , M.C. Maccarone (1) , L. Nicastro (1) , B. Sacco (1) , P. Kaaret (2) ((1) IFCAI-CNR , Palermo , Italy , (2) CfA

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Harvard USA)

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classification 🌌 astro-ph

keywords j0635binarycompanionsourcestarbepposaxconsistentcounterpart

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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.

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

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