Browsing by Author "Das, Basanti"

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    Relativistic Gravitational mass in Tolman-VI type solution
    (2011-07-06) Ray, Saibal; Das, Basanti
    Some known solutions for static charged fluid spheres of Tolman-VI type in general relativity are reexamined. The gravitational mass that appears in the Pant and Sah [1] and Tikekar [2] solutions is shown to be of electromagnetic origin in the sense that the gravitational mass, along with all other physical quantities, depends on the electromag- netic field alone. The energy condition, singularity and stability problems of the models are discussed thoroughly. VI
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    Tolman - Bayin type static charged fluid spheres in general relativity
    (2011-07-05) Ray, Saibal; Das, Basanti
    In a static spherically symmetric Einstein-Maxwell spacetime the class of astrophysical solu- tion found out by Ray and Das (2002) and Pant and Sah (1979) are revisited here in connection to the phenomenological relationship between the gravitational and electromagnetic fields. It is qualitatively shown that the charged relativistic stars of Tolman (1939) and Bayin (1978) type are of purely electromagnetic origin. The existence of this type of astrophysical solutions is a probable extension of Lorentz’s conjecture that electron-like extended charged particle possesses only ‘electromagnetic mass’ and no ‘material mass’.