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29 March 2024
 
  » arxiv » astro-ph/0110695

 Article overview


Discovery of a 1247 s pulsar in the Be X-ray binary SAX J2239.3+6116
J.J.M. in ’t Zand ; J. Swank ; R.H.D. Corbet ; C.B. Markwardt ;
Date 31 Oct 2001
Subject astro-ph
AffiliationUtrecht University & SRON), J. Swank, R.H.D. Corbet, C.B. Markwardt (NASA-GSFC
AbstractA search for pulsations from the Be X-ray binary SAX J2239.3+6116, through observations with the Narrow Field Instruments on BeppoSAX and the Proportional Counter Array on RXTE, yielded the clear presence of a 1247 s coherent oscillation. Given the fairly high X-ray luminosity on previous occasions (up to a few times 10^36 erg/s in 2 to 28 keV), the oscillation must be due to the spin of a neutron star. Assuming that the 262 day recurrence time is the orbital period, SAX J2239.3+6116 has both the longest orbital period and the longest pulse period of 24 Be X-ray binaries with measured orbital periods.
Source arXiv, astro-ph/0110695
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