Aritra Ghosh | অরিত্র ঘোষ 

LSST-DA Catalyst Fellow | UW Astronomy & DiRAC Institute

Data-Science Fellow | UW e-Science Institute

Visiting Research Affiliate | Yale Astrophysics

Deriving Novel Insights into Galaxy Evolution, Cosmology & AGN
using Large Surveys & Bespoke Machine Learning Tools

Hi There!

Image of Aritra Ghosh. Aritra Ghosh is a Ph.D. candidate
								in astrophysics and astronomy at Yale University. I am an LSST-DA Catalyst Prize Postdoctoral Fellow and am currently hosting my fellowship at the University of Washington Astronomy Department & the DiRAC Institute. My work focuses on leveraging large astronomical surveys and the latest advances in machine learning to derive new insights into the formation and evolution of galaxies, cosmology, and Active Galactic Nuclei.

New Result: We used a sample of $\sim 3$ million Hyper Suprime-Cam galaxies to demonstrate with $>5\sigma$ confidence that galaxies in denser environments are upto $\sim 25\%$ larger than their counterparts with similar mass and morphology in less dense regions of the universe. This comprehensive study is an important step in resolving decades of contradictory results on this topic. It also sheds new light on how the structure of galaxies is connected with their dark matter halos; as well as their merger history.

You can find more details about my research at this link. You can reach me at aritrag (at) uw.edu and aritraghsh09 (at) gmail.com