Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.6208l&link_type=abstract
American Astronomical Society, 185th AAS Meeting, #62.08; Bulletin of the American Astronomical Society, Vol. 26, p.1416
Astronomy and Astrophysics
Astronomy
Scientific paper
The initial spins of pulsars are not well constrained by observations. Most millisecond pulsars are thought to be spun up by accretion, but accretion-induced collapse (AIC) of white dwarf is still a valid scenario. The pre-collapse white dwarf easily obtains a moderate amount of angular momentum by accreting material from its binary companion. Neutron stars formed via AIC can be rapidly rotating even if the original white dwarf core is not. After a brief dynamical phase, the nascent neutron star settles into an axisymmetric quasi-equilibrium state, but the gravitational radiation bar-mode instability drives the star to a nonaxisymmetric configuration on a dissipative (longer) timescale. The emitted quasi-periodic gravitational waves have a unique signature: the wave frequency sweeps downward from a few hundred Hertz to zero, while the wave amplitude increases from zero to a maximum and then decays back to zero. Such a wave signal could be detected by broad-band gravitational wave interferometers currently being constructed. Detection (or even non-detection) of the such gravitational wave can provide valuable constraint on the rotational properties of newly-formed neutron stars.
No associations
LandOfFree
Neutron Star Initial Spins and Gravitational Radiation 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 Neutron Star Initial Spins and Gravitational Radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron Star Initial Spins and Gravitational Radiation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1321344