Colloquium Abstract - Roy - 2026Apr17

April 17, 2026

11:00am Mountain

Nirupam Roy (IISC)

 

Multiphase atomic ISM: Lessons from Observations and MHD simulations

 

Abstract

The interstellar medium, from which the new stars are born and to which the old stars inject matter and energy, thereby enriching it, is indeed an integral and important component of the galaxies. Understanding the structure and evolution of the interstellar medium, that involves a diverse range of phenomena and a wide range of scales, is an interesting exercise. I will briefly present how 21cm observations and numerical simulations can be utilized to explore the atomic ISM properties. I will particularly focus on three closely related aspects - the multiphase nature of the atomic ISM, interstellar turbulence and magnetic field - that play crucial roles in shaping the properties of the ISM, and highlight the latest insights and challenges in our understanding of the atomic interstellar medium.


Local Host: Sanjay Bhatnagar

Connect with NRAO

The NSF National Radio Astronomy Observatory and NSF Green Bank Observatory are facilities of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.

Founded in 1956, the NSF NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NSF NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NSF NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NSF NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.

The U.S. National Science Foundation (U.S. NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."

AUI collaborates with the scientific community and research sponsors to plan, build, and operate cutting-edge facilities. We cultivate excellence, deliver value, enhance education, and engage the public.