Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-11-16
Astrophys.J.728:12,2011
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Minor changes to match the published version
Scientific paper
We study the dimensionless spin parameter $j (= c J/ (G M^2))$ of uniformly rotating neutron stars and quark stars in general relativity. We show numerically that the maximum value of the spin parameter of a neutron star rotating at the Keplerian frequency is $j_{\rm max} \sim 0.7$ for a wide class of realistic equations of state. This upper bound is insensitive to the mass of the neutron star if the mass of the star is larger than about $1 M_\odot$. On the other hand, the spin parameter of a quark star modeled by the MIT bag model can be larger than unity and does not have a universal upper bound. Its value also depends strongly on the bag constant and the mass of the star. Astrophysical implications of our finding will be discussed.
Lin Lap Ming
Lo Ka-Wai
No associations
LandOfFree
The spin parameter of uniformly rotating compact stars 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 parameter of uniformly rotating compact stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The spin parameter of uniformly rotating compact stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463281