Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series SEM-GRECO
Subjects astro-ph
Date Monday 4 October 2021
Time 11:05
Institute IAP
Seminar Room Webinar for zoom details contact
Speaker's Last Name Räsänen
Speaker's First Name Syksy
Speaker's Email Address
Speaker's Institution University of Helsinki
Title The effect of dark matter discreteness on light propagation
Abstract In general relativity, light travels on null geodesics when wavefront and spacetime curvature are much smaller than photon energy. Localised dark matter particles can source large spacetime curvature, which pushes light off null geodesics. I discuss how to take this effect into account, and how it may affect cosmological redshift and distance.
arXiv Preprint Number

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