Fast rotation of neutron stars and equation of state of dense matter
نویسندگان
چکیده
منابع مشابه
Eos of Dense Matter and Fast Rotation of Neutron Stars
Neutron stars with their very strong gravity can be very fast rotators. Theoretical studies show that they could rotate at sub-millisecond periods, i.e., at frequency f = 1/period >1000 Hz. The first millisecond pulsar B1937+21, rotating at f = 641 Hz, remained the most rapid one during 24 years after its detection. In January 2006, discovery of a more rapid pulsar J1748-2446ad rotating at f = ...
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In the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. We have also investigated the structure of neutron stars. According to our results, the spin asymmetry stiens the equation of state and leads to high mass for the neutron star.
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Apparent (radiation) radius of neutron star, R∞, depends on the star gravitational mass in quite a different way than the standard coordinate radius in the Schwarzschild metric, R. We show that, for a broad set of equations of state of dense matter, R∞(Mmax) for the configurations with maximum allowable masses is very close to the absolute lower bound on R∞ at fixed M , resulting from the very ...
متن کاملEquation of State of Dense Matter and Maximum Mass of Neutron Stars
Theoretical models of the equation of state (EOS) of neutronstar matter (starting with the crust and ending at the densest region of the stellar core) are reviewed. Apart from a broad set of baryonic EOSs, strange quark matter, and even more exotic (abnormal and Q-matter) EOSs are considered. Results of calculations of Mmax for non-rotating neutron stars and exotic compact stars are reviewed, w...
متن کاملspin and isospin asymmetry, equation of state and neutron stars
in the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. we have also investigated the structure of neutron stars. according to our results, the spin asymmetry sti ens the equation of state and leads to high mass for the neutron star.
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2008
ISSN: 1387-6473
DOI: 10.1016/j.newar.2008.03.007