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arXiv · 2409.07063

Conversion of high frequency relic gravitational waves into photons in cosmological magnetic field

L. A. Panasenko·A. O. Chetverikov
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Abstract

This work continues the research presented in the article [1], where we estimate the Gertsenshtein effect's influence on the long-wavelength part of relic gravitational wave spectrum. Here, the differential equation system for the Gertsenshtein effect in Friedman-LeMaitre-Robertson-Walker universe, derived in [1], is simplified for gravitational waves in the under-horizon regime during radiation dominance epoch. Then, the obtained system is solved analytically. As a result of the solution analysis a conclusion was made about a significant increase of relic GWs with the frequencies $ k\gtrsim 10^{-11}$ Hz for magnetic field strength about 1 nGs. In addition, at the end of the article model dependency of the result is discussed

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L. A. Panasenko, A. O. Chetverikov. 2024-09-11. Conversion of high frequency relic gravitational waves into photons in cosmological magnetic field. https://arxiv.org/abs/2409.07063

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