"Somewhere, something incredible is waiting to be known | क्वचित् किमपि अद्भुतं ज्ञातुं प्रतीक्षते |کہیں، کوئی نایاب شے پائے جانے کے انتظار میں ہے۔ " - Carl Sagan
I am a research scientist with a PhD in Astrophysics and a strong inclination toward data-driven science. I am currently a research collaborator at Center for Astrophysics, Harvard & Smithsonian. Previously, I was a full-time researcher at Harvard & Smithsonian and a postdoctoral fellow at the University of New South Wales, Australia. I completed my PhD at the Center for Astrophysics and Supercomputing, Swinburne University of Technology, Australia and hold an integrated Bachelor's and Master's degree in Engineering Physics from IIT (BHU) Varanasi, India.
Over the past three years, I have led multiple projects within the Astro 3D Galaxy Evolution with Lenses (AGEL) collaboration, applying advanced data analysis and physics-based modeling to gravitational lensing data. Using these models, I investigated galaxy evolution and tested cosmological theories.
News
Spoke at AstroAI Workshop 2025, July 7-11, "Gravitational Lensing and the Need for AI-Accelerated Lens Modeling". Link
Spoke to ABC News about India's role in the Axiom 4 Space Mission. Link
Sahu et al. 2024 ApJ, 970, 86
"Cosmography with the Double Source Plane Strong Gravitational Lens AGEL150745+052256"
Sahu et al. 2025, arXiv: 2504.00656
Gravitational Lensing
Gravitational lensing is the deflection of light coming from a background source by a foreground mass concentration along the same line of sight. As a result, multiple distorted and magnified images of the background source are formed. Strong lensing, where multiple images of the background source are formed, is caused by massive objects such as galaxies or clusters with a radially varying (differential) mass distribution. I use gravitational lenses to study galaxy evolution models and cosmology. See Sahu et al. (2024), Sahu et al. (2025)
Co-evolution of Black Holes and Host Galaxies