English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The geometric description of gravitational memory for strong gravitationalwaves is developed, with particular focus on shockwaves and their spinninganalogues, gyratons. Memory, which may be of position or velocity-encoded type,characterises the residual separation of neighbouring `detector' geodesicsfollowing the passage of a gravitational wave burst, and retains information onthe nature of the wave source. Here, it is shown how memory is encoded in thePenrose limit of the original gravitational wave spacetime and a new `timelikePenrose limit' is introduced to complement the original plane wave limitappropriate to null congruences. A detailed analysis of memory is presented fortimelike and null geodesic congruences in impulsive and extended gravitationalshockwaves of Aichelburg-Sexl type, and for gyratons. Potential applications togravitational wave astronomy and to quantum gravity, especially infra-redstructure and ultra-high energy scattering, are briefly mentioned.

Memory, Penrose Limits and the Geometry of Gravitational Shockwaves and Gyratons