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| 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 fumagall@iap.fr |
| 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. |
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To Generate a poster for this seminar : [ Postscript | PDF ]
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[ English version ] |