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Gravitational Wave Search through Electromagnetic Telescopes

Kohri, Kazunori; Ito, Asuka; Nakayama, Kazunori

We study the graviton-photon conversion in the magnetic fields of the Earth, the Milky Way, and intergalactic regions. Requiring that the photon flux converted from gravitons does not exceed the observed photon flux with telescopes, we derive upper limits on the stochastic gravitational waves in frequency ranges from 10⁷-10³⁵…