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Paper   IPM / P / 17211
School of Physics
  Title:   Relativistic redshift of light and its implication for astrophysical objects
  Author(s):  J. T. Firouzjaee
  Status:   Published
  Journal: New Astronomy
  Vol.:  101
  Year:  2023
  Pages:   102011
  Supported by:  IPM
In this paper, I analyze the redshift of receiving photons as observed by different external observers outside for known metrics which have astrophysical implications. It is introduced the known observer for stationary spacetime and calculated the redshift factor between them. For different observers, the local gravitational potential effect and cosmological effect in the redshift factor are analyzed. Finally, the redshift effects on the brightness temperature of the electromagnetic from astrophysical sources wave are investigated.

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