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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 | Affiliation: | Utrecht University & SRON), J. Swank, R.H.D. Corbet, C.B. Markwardt (NASA-GSFC | Abstract: | A 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 | Services: | Forum | Review | PDF | Favorites |
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