TY - JOUR

T1 - Conversion of high-frequency relic gravitational waves into photons in cosmological magnetic field

AU - Понасенко, Л.А.

AU - Четвериков, Артем Олегович

N1 - The work was supported by RSF Grant 23-42-00066.

PY - 2024/12

Y1 - 2024/12

N2 - This work continues the research presented in the article (Dolgov et al. in Universe 10(1):7, 2024), 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 Dolgov et al. (Universe 10(1):7, 2024), is simplified for gravitational waves in the sub-horizon regime during radiation dominance epoch without taking into account the interaction with primary plasma. 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≳10-11 Hz for magnetic field strength B0∼1 nGs in the considered approximation. In addition, at the end of the article model dependence of the result is discussed.

AB - This work continues the research presented in the article (Dolgov et al. in Universe 10(1):7, 2024), 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 Dolgov et al. (Universe 10(1):7, 2024), is simplified for gravitational waves in the sub-horizon regime during radiation dominance epoch without taking into account the interaction with primary plasma. 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≳10-11 Hz for magnetic field strength B0∼1 nGs in the considered approximation. In addition, at the end of the article model dependence of the result is discussed.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85212048395&origin=inward&txGid=20bf6f82978c790a3572a32cd33733a8

M3 - Article

VL - 139

JO - European Physical Journal Plus

JF - European Physical Journal Plus

SN - 2190-5444

IS - 12

M1 - 1087

ER -