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 test and improve large-scale structure models by combining observations, computer simulations and analytical theory. In recent years, my research has had a particular focus on understanding: (i) how galaxy shapes are correlated with each other and with the large-scale structure (“intrinsic alignments”) and (ii) the impact of baryonic physics (supernova and active galactic nuclei feedback, star formation, gas accretion) on the distribution of matter. These are two critical components of large-scale structure models which need to be considered to ensure that the accuracy and precision goals of galaxy surveys are met, but at the same time they are probes of the Universe in their own right.

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 contributions to astrobites here.

A few years ago, we launched "Astrobites en Español", the Spanish version of astrobites. Take a peek at our website here!