Gyroscopic Gravitational Memory - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2023

Gyroscopic Gravitational Memory

Résumé

We study the motion of a gyroscope located far away from an isolated gravitational source in an asymptotically flat space-time. As seen from a local frame `tied to distant stars', the gyroscope precesses when gravitational waves cross its path, resulting in a net `orientation memory' that carries information on the wave profile. The effect is related to asymptotic symmetries: at leading order in the inverse distance to the source, the precession rate coincides with the (covariant) dual mass aspect, providing a celestially local measurement protocol for dual supertranslation charges. Furthermore, the net gyroscopic memory is derived from flux-balance equations for superrotations and contains an extra flux generating electric-magnetic duality. The spin memory effect is reproduced as a special case.

Dates et versions

hal-03500378 , version 1 (22-12-2021)

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Citer

Ali Seraj, Blagoje Oblak. Gyroscopic Gravitational Memory. Journal of High Energy Physics, 2023, 11, pp.057. ⟨10.1007/JHEP11(2023)057⟩. ⟨hal-03500378⟩
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