X-ray observations of the slowest known Be/X-ray pulsars RX J0146.9+6121 and X Persei

Simple item page
dc.creatorHaberl, F.
dc.creatorAngelini, L.
dc.creatorMotch, C.
dc.creatorWhite, N. E.
dc.date1997-10-14
dc.date.accessioned2026-07-07T02:24:32Z
dc.date.available2026-07-07T02:24:32Z
dc.descriptionWe present ASCA and ROSAT observations of the Be/X-ray binary pulsars RX J0146.9+6121 and X Persei between 1990 and 1996. Measuring the neutron star spin period and X-ray luminosity of X Persei shows that the episode of low X-ray luminosity and monotonic spin-down since 1978 continued to at least August 1995. ASCA and ROSAT HRI observations of RX J0146.9+6121 detected the pulsar with the longest known neutron star spin period at low luminosities after the X-ray outburst seen by EXOSAT in August 1984. The large spin period decrease seen between 1984 and 1993 has nearly stopped at a period of 1407.3 s in February 1996. We discuss that the X-ray outburst behaviour of X Persei with respect to its Be star phase changes observed in the optical can be caused by an asymmetry in the matter distribution around the Be star.
dc.description6 pages, LaTex, 8 figures, Accepted for publication in A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/9710138
dc.identifierhttp://arxiv.org/abs/astro-ph/9710138
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11639
dc.subjectAstrophysics
dc.titleX-ray observations of the slowest known Be/X-ray pulsars RX J0146.9+6121 and X Persei
dc.typetext

Files

Collections

arXiv