Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 431, Issue 4, Pages 3216-3221Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt401
Keywords
stars: neutron; pulsars: general
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Funding
- Department of Science and Technology, Govt. of India, New Delhi [SR/S2/HEP-026/2009]
- India-South Africa bilateral research grant
- NRF
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There are three categories of stars whose masses have been found accurately in recent times: (1) two for which Shapiro delay is used, which is possible due to GR light bending as the partner is heavy - PSR J1614-2230 and PSR J1903+0327, (2) six eclipsing stars for which numerical Roche lobe geometry is used and (3) three stars for which spectroscopic methods are used and in fact for these three the mass and radii both are estimated. Motivated by large colour (N-c) expansion using a modified Richardson potential, along with density-dependent quark masses thereby allowing chiral symmetry restoration, we get compact strange stars fitting all the observed masses.
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