Elisa Chisari

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Elisa Chisari

Royal Astronomical Society Research Fellow

I completed my PhD in the Deparment of Astrophysical Sciences at Princeton University in September 2014. I got my undergraduate degree in Physics from the Universidad de Buenos Aires, Argentina. My main current research interests are in cosmology. In particular, I try to solve the challenges that we face on extracting cosmological information from gravitational lensing. Some of the effects I study are:

  • the intrinsic alignments of galaxies, intrinsic correlations between galaxy shapes that can arise due to interactions with the tidal field of the Universe;
  • the impact of baryonic processes, such as feedback from Active Galactic Nuclei and star formation, on the distribution of matter in the Universe.

I am involved in several different galaxy surveys that are either ongoing or upcoming, and which will try to elucidate the nature of dark energy through gravitational lensing, among other exciting goals. I spend a lot of my time working on the Large Synoptic Survey Telescope, mostly on developing the theoretical modeling pipeline for analyzing this telescope's data. I am the "Dark Energy Theory Point of Contact" for LSST:UK. I am also involved in the Kilo-Degree Survey as co-lead of the galaxy-galaxy lensing working group.

I enjoy teaching. I started teaching when I was an undergraduate student at University of Buenos Aires, working as an assistant for a course in Fluid dynamics and also helping with lab sessions on Optics & Thermodynamics. I was also a teaching assistant for the course "Life in the Cosmos", an introductory astrobiology course for non-science majors taught by visiting Professor Chris Impey at Princeton University.

At Oxford, I give tutorials on General Relativity (B5) at St. Catherine's college. In 2018, I am giving a set of cosmology lectures for the MMathPhys course.

I study tides across the Universe that change the shapes and orientations of galaxies. I use a combination of large-scale galaxy surveys, theory and simulations to understand what these tides tell us about cosmology and the formation of galaxies. I am also interested in these “intrinsic alignments” as a source of contamination to weak gravitational lensing measurements.

Find my publications here.

I used to write for astrobites, a website dedicated to bringing day to day research to undergraduate readers. You can find my recent contributions to astrobites here. Two years ago, we launched "Astrobites en Español", the Spanish version of astrobites. Take a peek at our website here!