Quadrupole moments of rotating neutron stars and strange stars

@article{43070,
   author = {Stuchlík, Zdeněk and Urbanec, Martin and Miller, John},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {3},
   doi = {http://dx.doi.org/10.1093/mnras/stt858},
   keywords = {stars: neutron; stars: rotation},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Quadrupole moments of rotating neutron stars and strange stars},
   url = {http://mnras.oxfordjournals.org/content/433/3/1903},
   volume = {433},
   year = {2013}
}

TY  - JOUR
ID  - 43070
AU  - Stuchlík, Zdeněk - Urbanec, Martin - Miller, John
PY  - 2013
TI  - Quadrupole moments of rotating neutron stars and strange stars
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 433
IS  - 3
SP  - 1903-1910
EP  - 1903-1910
SN  - 00358711
KW  - stars: neutron
KW  - stars: rotation
UR  - http://mnras.oxfordjournals.org/content/433/3/1903
N2  - We present results for models of neutron stars and strange stars constructed using the Hartle-Thorne slow-rotation method with a wide range of equations of state, focusing on the values obtained for the angular momentum J and the quadrupole moment Q, when the gravitational mass M and the rotational frequency are specified. Building on previous work, which showed surprising uniformity in the behaviour of the moment of inertia for neutron-star models constructed with widely different equations of state, we find similar uniformity for the quadrupole moment. These two quantities, together with the mass, are fundamental for determining the vacuum space-time outside neutron stars. We study particularly the dimensionless combination of parameters QM/J(2) (using units for which c = G = 1). This quantity goes to 1 in the case of a Kerr-metric black hole and deviations away from 1 then characterize the difference between neutron-star and black hole space-time. It is found that QM/J(2) for both n
ER  - 

STUCHLÍK, Zdeněk, Martin URBANEC and John MILLER. Quadrupole moments of rotating neutron stars and strange stars. \textit{Monthly Notices of the Royal Astronomical Society}. GB - Spojené království Velké Británie a, 2013, vol.~433, No~3, p.~1903-1910, 7 pp. ISSN~0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stt858.