Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.332..415g&link_type=abstract
Astrophysics and Space Science, Volume 332, Issue 2, pp.415-421
Astronomy and Astrophysics
Astrophysics
4
Charged Fluids, Reissener-Nordstom Metric, Superdence Star, General Relativity
Scientific paper
We obtain a well behaved class of charge analogues of neutral superdense star model due to Kuchowicz, by using a particular electric field, which involves a parameter K and vanishes when K=0. The members of this class are seen to satisfy the various physical conditions e.g. c 2 ρ≥3 p≥0, dp/ dr<0, dρ/ dr<0, along with the velocity of sound, dp/ c 2 dρ<1 and the adiabatic index (( p+ c 2 ρ)/ p)( dp/( c 2 dρ))>1, for the interval 0< K<1 with the maximum mass 6.8374 M Θ and the radius 23.4679 km with the central red shift Z c =0.75364. In the interval, 0< K≤0.1179, the velocity of sound and the ratio p/ c 2 ρ are found monotonically decreasing towards the pressure free interface, which presents a relevant model for massive star like Neutron star or pulsar with the maximum mass as 4.1474 M Θ and the radius 20.5481 km with the central red shift Z c =0.6654.
Gupta Y. K.
Maurya Sunil Kumar
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