Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-12-07
Acta Physica Polonica B vol. 42 (2011) page 2203
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Talk presented at the XXXV International Conference of Theoretical Physics, "Matter to the Deepest", Ustron, Poland, September
Scientific paper
10.5506/APhysPolB.42.2203
We study the implications of asymmetric dark matter on neutron stars. we construct a "mixed neutron star" model composed of ordinary baryons and of asymmetric dark matter baryons. We derive the general relativistic structure equations for each specie, the equation for the mass within a given radius, and the redshift as function of radius. We present one specific numerical model as an illustrative example. In this example, the mass of the dark neutron equals half that of the ordinary neutron. The main results are: a total mass of $3.74 M_{\odot}$, a total mass within the neutron-sphere equaling $1.56 M_{\odot}$, the neutrons mass is $1.34 M_{\odot}$, the star radius is 31.9 km, the neutron-sphere radius is 11.1 km, and the redshifts from the neutron-sphere and from the star surface are 0.72, 0.25, respectively. We comment briefly on possible astrophysical implications.
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