Intrinsic alignments of galaxies in weak lensing
DIPC Seminars
- Speaker
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Bjoern Malte Schaefer, University of Heidelberg
- When
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2019/03/29
13:00 - Place
- Donostia International Physics Center
- Add to calendar
-
iCal
Weak gravitational lensing is considered as a prime tool for mapping the
cosmic-large scale structure as it only requires relativity for its
description. One commonly works under the assumption of perfectly uncorrelated
intrinsic shapes of galaxies, which is challenged by tidal interactions of
galaxies which makes their shapes intrinsically correlated. In my talk I’ll
introduce tidal interaction models for the two primary galaxy types, discuss
what shape correlations they would evoke, and how these intrinsic correlations
interfere with the interpretation of weak lensing data.
Host: Raul Angulo