Two possible approaches to form sub-millisecond pulsars Export

@article{citeulike:3188413, abstract = {Pulsars have been recognized as normal neutron stars or quark stars. Sub-millisecond pulsars, if detected, would play an essential and important role in distinguishing quark stars from neutron stars. A key question is how sub-millisecond pulsars could form. Both sub-Keplerian (for neutron and quark stars) and super-Keplerian cases (only for quark stars, which are bound additionally by strong interaction) have been discussed in this paper in order to investigate possible ways of forming sub-millisecond pulsars. In the sub-Keplerian case, the equilibrium periods of both neutron and quark stars could be as low as \~{}0.4 ms when they are spun up through accretion in binary systems. In the super-Keplerian case, pulsars could very likely have an initial period of \~{}0.1 ms if quark stars with different mass could be formed from accretion-induced collapse (AIC) of white dwarfs. The timescale for a sub-millisecond pulsar to keep its period \<1 ms is restricted due to gravitational wave radiation. We found that the timescales of neutron stars within sub-millisecond periods are approximately \~{}10 yr, but the timescales estimated (\>10 Myr) for low-mass quark stars could be long enough for us to detect.}, archivePrefix = {arXiv}, author = {Du, Yuanjie and Xu, R. X. and Qiao, G. J. and Han, J. L.}, citeulike-article-id = {3188413}, citeulike-linkout-0 = {http://arxiv.org/abs/0803.1334}, citeulike-linkout-1 = {http://arxiv.org/pdf/0803.1334}, day = {10}, eprint = {0803.1334}, keywords = {millisecond, neutron, pulsar, pulsars, stars}, month = {Mar}, posted-at = {2008-11-21 15:07:45}, priority = {3}, title = {Two possible approaches to form sub-millisecond pulsars}, url = {http://arxiv.org/abs/0803.1334}, year = {2008} }

TY - JOUR ID - citeulike:3188413 L3 - citeulike-article-id:3188413 N2 - Pulsars have been recognized as normal neutron stars or quark stars. Sub-millisecond pulsars, if detected, would play an essential and important role in distinguishing quark stars from neutron stars. A key question is how sub-millisecond pulsars could form. Both sub-Keplerian (for neutron and quark stars) and super-Keplerian cases (only for quark stars, which are bound additionally by strong interaction) have been discussed in this paper in order to investigate possible ways of forming sub-millisecond pulsars. In the sub-Keplerian case, the equilibrium periods of both neutron and quark stars could be as low as ~0.4 ms when they are spun up through accretion in binary systems. In the super-Keplerian case, pulsars could very likely have an initial period of ~0.1 ms if quark stars with different mass could be formed from accretion-induced collapse (AIC) of white dwarfs. The timescale for a sub-millisecond pulsar to keep its period <1 ms is restricted due to gravitational wave radiation. We found that the timescales of neutron stars within sub-millisecond periods are approximately ~10 yr, but the timescales estimated (>10 Myr) for low-mass quark stars could be long enough for us to detect. TI - Two possible approaches to form sub-millisecond pulsars KW - millisecond KW - neutron KW - pulsar KW - pulsars KW - stars AU - Du, Yuanjie AU - Xu, RX AU - Qiao, GJ AU - Han, JL PY - 2008/Mar/10/ UR - http://arxiv.org/abs/0803.1334 ER -