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- Brodin, Gert, 1963-, et al.
(författare)
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Photon frequency conversion induced by gravitational radiation
- 2001
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Ingår i: Physical Review D. - : American Physical Society. - 2470-0010 .- 2470-0029. ; 63
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Tidskriftsartikel (refereegranskat)abstract
- We consider the propagation of gravitational radiation in a magnetized multicomponent plasma. It is shown that large density perturbations can be generated, even for small deviations from flat space, provided the cyclotron frequency is much larger than the plasma frequency. Furthermore, the induced density gradients can generate frequency conversion of electromagnetic radiation, which may give rise to an indirect observational effect of the gravitational wave
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- Eriksson, Daniel, et al.
(författare)
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Possibility to measure elastic photon-photon scattering in vacuum
- 2004
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Ingår i: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 70:1, s. 013808-
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Tidskriftsartikel (refereegranskat)abstract
- Photon-photon scattering in vacuum due to the interaction with virtual electron-positron pairs is a consequence of quantum electrodynamics. A way for detecting this phenomenon has been devised based on interacting modes generated in microwave wave guides or cavities [G. Brodin, M. Marklund, and L. Stenflo, Phys. Rev. Lett. 87, 171801 (2001)]. Here we materialize these ideas, suggest a concrete cavity geometry, make quantitative estimates and propose experimental details. It is found that detection of photon-photon scattering can be within the reach of present day technology.
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- Servin, Martin, et al.
(författare)
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Cyclotron damping and Faraday rotation of gravitational waves
- 2001
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Ingår i: Physical Review D. - : American Physical Society. - 2470-0010 .- 2470-0029. ; 64
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Tidskriftsartikel (refereegranskat)abstract
- We study the propagation of gravitational waves in a collisionless plasma with an external magnetic field parallel to the direction of propagation. Because of resonant interaction with the plasma particles the gravitational wave experiences cyclotron damping or growth, the latter case being possible if the distribution function for any of the particle species deviates from thermodynamical equilibrium. Furthermore, we examine how the damping and dispersion depends on temperature and on the ratio between the cyclotron and gravitational wave frequency. The presence of the magnetic field leads to different dispersion relations for different polarizations, which in turn imply Faraday rotation of gravitational waves.
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