Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...497..865l&link_type=abstract
Astrophysical Journal v.497, p.865
Astronomy and Astrophysics
Astronomy
6
Accretion, Accretion Disks, Stars: Binaries: Close, Stars: Neutron, X-Rays: Stars
Scientific paper
We consider the influence on spin evolution, in a neutron star with a low-mass giant companion, of thermal-viscous instability in the accretion disk around the neutron star. Recent investigations on disk instability predicted that most low-mass X-ray binaries (LMXBs) with orbital period Porb >~ 1-2 days should be transient. We show that during the LMXB evolution, because of the transient behavior in mass transfer, the neutron star's spin can deviate from the conventional "equilibrium spin" determined by the stable mass transfer rate. We discuss the application of such a scenario to the prior spin evolution during the LMXB phase in the binary and millisecond radio pulsar PSR J1455-3330. The anomalously high characteristic age of the pulsar indicates that the initial pulse period is close to its current value, 7.99 ms, which is much longer than that attained via stable mass accretion. We argue that such a spin period can be accounted for if only a small fraction of mass transferred from the secondary was accreted by the neutron star during (at least) the late stage of mass transfer, thus presenting positive evidence for disk instability in wide LMXBs.
Li Xiao-Dong
van den Heuvel Edward Peter Jacobus
Wang Zhen-Ru
No associations
LandOfFree
The Spin Period of PSR J1455-3330: Evidence for Disk Instability in Wide Low-Mass X-Ray Binaries? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Spin Period of PSR J1455-3330: Evidence for Disk Instability in Wide Low-Mass X-Ray Binaries?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spin Period of PSR J1455-3330: Evidence for Disk Instability in Wide Low-Mass X-Ray Binaries? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1602705