About me

Welcome to my corner of the cosmos! I am a Postdoctoral Fellow at Carnegie Observatories, Pasadena, California. My research interest is in extragalactic astronomy. Our universe hosts trillions of galaxies, and our very own solar system resides within one called the Milky Way. Galaxies, like pieces of a grand puzzle, shape the vast expanse of space around us. I am fascinated by the question of how these galaxies evolve over time. The following quote inspires me a lot:

"Look back 100 years, to 1903. How important is it now who was Prime Minister of Great Britain in 1903, or President of the United States? What stands out as really important is that at McGill University, Ernest Rutherford and Frederick Soddy were working out the nature of radioactivity. The understanding of radioactivity allowed physicists to explain how the Sun and Earth's cores could still be hot after millions of years"

--- Steven Weinberg

Academics

Education

Postdoctoal Fellow
Carnegie Observatories, Pasadena, California, US
Advisor: Dr. Gwen Rudie 		Aug, 2026- present
Ph.D., Astronomy
IUCAA, Pune, India
Advisor: Dr. Sowgat Muzahid 		Oct, 2020- July, 2026
MSc, Physics
Indian Institute of Technology (IIT) Kharagpur, India 		2018-2020
BSc, Physics (Honours)
Bethune College, University of Calcutta, Kolkata, India 		2014-2017
You can know more about my research from my CV

Outreach Activities

  • Every year, IUCAA celebrates the National Science Day as a grand public outreach event. Thousands of students and the general public attend. I have presented posters, online talks, and flash talks at this event several times.
  • School visit-November, 2022 Nainital, India, (Talk and hands-on sessions with school students)

Research

My research primarily focuses on the extended gaseous halos around galaxies, also known as the circumgalactic medium (CGM), which plays a pivotal role in the evolution of galaxies and their star formation. As an observational astronomer, I use multiband imaging and/or I use integral field spectroscopy for finding galaxies from the early universe (at redshifts 3-4), and quasar absorption lines spectroscopy (utilizing data from instruments such as VLT-UVES and Keck-HIRES) to examine the gaseous environment surrounding these galaxies. By measuring the properties of the absorption lines and comparing it with the ionisation models, I aim to understand the underlying physics and properties governing the evolution of galaxies.

You can find my publications here

Research Interests

Galaxy formation and evolution, Quasar apsorption lines, Photoionization modeling, Circumgalactic and Intergalactic medium, Reionization

Collaborators

  • Sowgat Muzahid, IUCAA, India
  • Joop Schaye, Leiden Observatory, Netherlands
  • Sean D Johnson, University of Michigan, US
  • Sebastiano Cantalupo, ETH Zurich, Switzerland

Contact

Address
Carnegie Observatories,
813 Santa Barbara Street, Pasadena, CA 91101
United States

email: ebanerjee@carnegiescience.edu
              eshitaban18@gmail.com

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