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X-ORIGINAL-URL:https://www.ashoka.edu.in
X-WR-CALDESC:Events for Ashoka University
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TZID:Asia/Kolkata
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DTSTART:20230101T000000
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DTSTART;TZID=Asia/Kolkata:20240919T183000
DTEND;TZID=Asia/Kolkata:20241125T193000
DTSTAMP:20240829T035302Z
CREATED:20240829T035302Z
LAST-MODIFIED:20240829T035302Z
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SUMMARY:SOA Colloquium Series
DESCRIPTION:
URL:https://www.ashoka.edu.in/event/soa-colloquium-series/
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DTSTART;TZID=Asia/Kolkata:20241104T133000
DTEND;TZID=Asia/Kolkata:20241104T150000
DTSTAMP:20241102T193459Z
CREATED:20241103T071000Z
LAST-MODIFIED:20241102T193459Z
UID:66491-1730727000-1730732400@www.ashoka.edu.in
SUMMARY:Physics Seminar
DESCRIPTION:Abstract:   \nStars form in the densest regions of interstellar medium called molecular/dark clouds which host gravitationally unstable cores. The overall low star-formation efficiency of our galaxy hints towards the role of resisting factors in addition to gravity where magnetic fields serve as an important agent in setting up the star-formation rate and the efficiency. Since their discovery 60 years ago\, much work has been done to study the magnitude and morphology of interstellar magnetic fields. Observational techniques involve linear polarization of dust emission and the starlight extinction\, Faraday rotation of linearly polarized radiation and Zeeman observations of spectral lines. However\, none of these observational techniques fully explain the magnetic fields. Linear polarization observations yield the morphology and the mean field strength in the plane of the sky. The Zeeman effect is one technique that gives precise information about the magnitude and the direction\, along the line of sight. In this talk\, I will highlight different observations to measure magnetic fields with the largest single-dish facility\, a Five-hundred-meter Aperture Spherical radio Telescope (FAST) in radio and submillimetre and optical wavelengths. Further\, I will also discuss the possible implications of the estimated magnetic field strength and the energy budget on the intricacies of the star formation process.  \n  \nAbout the Speaker:  \nEkta Sharma is an observational astrophysicist and is currently working at the National Astronomical Observatories\, Chinese Academy of Sciences in Beijing as an Alliance of International Science Organizations (ANSO)fellow. She completed her Bachelor's and Master's in Physics from St Stephen’s College\, University of Delhi. She completed her PhD at the Indian Institute of Astrophysics and the University of Delhi. Her current postdoctoral research is focused on understanding the magnetic environment of the molecular clouds and in general the interstellar medium using multiwavelength observations. She is mainly studying the relative role of magnetic fields with respect to turbulence and stellar feedback in the evolution of molecular clouds to stars. Additionally\, she is also interested in exploring the kinematics of clouds using their molecular line emission. 
URL:https://www.ashoka.edu.in/event/physics-seminar/
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