Astrophysics and Space Science

, Volume 347, Issue 2, pp 411–421 | Cite as

Velocity measurements in some classes of alternative gravity theories

Original Article
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Abstract

The general misconception regarding velocity measurements of a test particle as it approaches black hole is addressed by introducing generalized observer set. For a general static spherically symmetric metric applicable to both Einstein and alternative gravities as well as for some well known solutions in alternative gravity theories, we find that velocity of the test particle do not approach that of light at event horizon by considering ingoing observers and test particles.

Keywords

Velocity in general relativity Observer Alternative gravity theories 
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Notes

Acknowledgements

The author thanks prof. Subenoy Chakraborty of Jadavpur University and Prof. Soumitra Sengupta of IACS for helpful discussion. The author also thanks DST, Govt. of India for awarding KVPY fellowship. He gratefully thanks IUCAA, Pune, for warm hospitality where a part of this work was done.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Department of Physics, Rajabajar Science CollegeCalcutta UniversityKolkataIndia

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