We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Exact well behaved solutions of Einstein-Maxwell equations for relativistic charged superdense star models.
- Authors
Maurya, S.; Gupta, Y.
- Abstract
We present a new class of static spherically symmetric exact solutions of the Einstein-Maxwell system of equations by considering a specific choice of electric intensity which involves a parameter K. The resulting solutions represent charged fluid spheres joining smoothly with the Reissner-Nordstrom metric at the pressure free interface. The solutions so obtained are utilised to construct the models for super-dense star, like neutron stars, strange quark stars and pulsars by taking the surface density as 2×10 g/cm. It is observed that the models are regular and well behaved for the restricted value of the parameter K (0.9155≤ K≤0.9485). Over all the model of maximum mass has radius a=10.5834 km and mass equivalent to 1.0111 M. The pulsar character of the super-dense stars so obtained has been tested with the help of moment of inertia. As a consequence the super-dense star models are found capable of representing pulsars with their mass lying in the interval 0.2038 M to 1.0111 M with the radius spanning from 6.6819 km to 10.5834 km. The analysis of the models reveals the possibility of only Vela pulsars i.e. (i) Star model possessing mass 0.9324 M, radius 10.3728 km, the red-shift at centre Z=0.1871 and at surface Z=0.1093 and moment of inertia I=0.6412×10 g cm for K=0.9155 and Ca=0.2727. (ii) An another star model possess, mass 0.8283 M, radius 10.0910 km, the red-shift at centre Z=0.1658 and at surface Z=0.0980 and moment of inertia I=0.5213×10 g cm for K=0.9485 and Ca=0.2406.
- Subjects
EINSTEIN-Maxwell equations; MAXWELL equations; RELATIVISTIC astrophysics; BIG bang theory; PULSARS; MOMENTS of inertia; NEUTRON stars
- Publication
Astrophysics & Space Science, 2012, Vol 340, Issue 2, p323
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-012-1066-x