I am a 5th year graduate student in the Deparment of Astrophysical Sciences at Princeton University. I got my undergraduate degree in Physics from the Universidad de Buenos Aires, Argentina. My main current interests are cosmology, in particular, I study the intrinsic alignments of galaxies. I also like to think about galaxy clusters and their connection to the large-scale structure of the Universe.
Would you like to get in touch? Do so at nchisari [at] astro.princeton.edu
I am currently working mainly with Dr. Michael Strauss and Dr. Rachel Mandelbaum on measuring intrinsic alignments of cluster galaxies. I am also developing a cluster finder algorithm based on the Adaptive Matched Filter method. In general, I am interested in the intrinsic alignments of clusters and galaxies.
The intrinsic alignments of Luminous Red Galaxies seem to be adequately modelled by assuming that their shapes follow the tidal field of the Universe (plus some misalignment). Can we use intrinsic alignments for cosmology? We recently addressed this question with Dr. Cora Dvorkin (IAS) in this work . We found that in future spectroscopic surveys, Baryon Acoustic Oscillations could be observed in the intrinsic alignments of LRGs.
During my first couple of years in graduate school, I worked on a variety of topics: metal absorbers in the intergalactic medium in numerical simulations and their comparison to observations (with Dr. Renyue Cen), the importance of using General Relativity in cosmological N-body simulations (with Dr. Matias Zaldarriaga at the Institute for Advanced Studies), improving shear estimates in weak lensing through stacking images (with Dr. Rachel Mandelbaum, now at Carnegie Mellon University) and the contribution of TP-AGB stars to the mid-infrared colors of nearby galaxies (with Dr. Daniel Kelson at The Observatories of the Carnegie Institution of Washington).
During my undergraduate studies, I worked with Dr. Leonardo Pellizza and Dr. Patricia Tissera at the Instituto de Astronomia y Fisica del Espacio ( IAFE ) in Buenos Aires. We studied the host galaxies of long gamma-ray bursts using semianalytic models and the Millennium simulation.
Back then, I also worked at a fluid dynamics lab in the Facultad de Ingenieria in Buenos Aires, putting together a Schlieren optical system.