TITLE

Gravitational redshift in Kerr-Newman geometry using gravity's rainbow

AUTHOR(S)
Dubey, Anuj; Sen, A.; Mazumdar, Bijoy
PUB. DATE
November 2017
SOURCE
Astrophysics & Space Science;Nov2017, Vol. 362 Issue 11, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Gravitational redshift is generally reported by most of the authors without considering the influence of the energy of the test particle using various spacetime geometries such as Schwarzschild, Reissner-Nordstrom, Kerr and Kerr-Newman geometries for static, charged static, rotating and charged rotating objects respectively. In the present work, the general expression for the energy dependent gravitational redshift is derived for charged rotating body using the Kerr-Newman geometry along with the energy dependent gravity's rainbow function. It is found that the gravitational redshift is influenced by the energy of the photon. One may obtain greater correction in the value of gravitational redshift, using the high energy photons. Knowing the value of gravitational redshift from a high energy sources such as Gamma-ray Bursters (GRB), one may obtain the idea of upper bounds on the dimensionless rainbow function parameter ( $\xi$ ). Also there may be a possibility to introduce a new physical scale of the order of $\frac{\xi}{E_{\mathrm{Pl}}}$ .
ACCESSION #
126307946

 

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