The Journal of the Indian Mathematical Society

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On Active and Passive Mass of a Fluid Sphere


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1 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune-411007, India
     

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Recently Bonnor [1] has raised the question of inequality of active and passive (inertial) mass of a fluid sphere of uniform density in general relativity (GR). He takes for the active mass the Schwarzschild mass M appearing in the exterior metric and obtains the passive mass by integrating the passive density ρp=ρ+p over the proper 3-volume of the interior solution. The two do not agree. The passive density ρp defined by the equation of motion.
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  • On Active and Passive Mass of a Fluid Sphere

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Authors

Naresh Dadhich
Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune-411007, India

Abstract


Recently Bonnor [1] has raised the question of inequality of active and passive (inertial) mass of a fluid sphere of uniform density in general relativity (GR). He takes for the active mass the Schwarzschild mass M appearing in the exterior metric and obtains the passive mass by integrating the passive density ρp=ρ+p over the proper 3-volume of the interior solution. The two do not agree. The passive density ρp defined by the equation of motion.