Physics Colloquium

Physics Colloquium


Friday, February 22, 2019

Time: 12 pm - 1:30 pm

Location: BLHSB 1.104 (Brownsville), EACSB 1.104 (Edinburg)

Detection of Gravitational Waves from Core Collapse Supernovae

Core collapse supernovae (CCSN) in our universe are potential sources of gravitational waves (GW) that could be detected in a network of GW detectors. CCSN rates are low, but the associated GW is likely to carry profuse information about the underlying processes leading to the collapse. Calculations based on analytic models predict GW energies within the detection range of the Advanced LIGO detectors, out to tens of Mpc for coalescing binary neutron stars. But for supernovae, the distances are much less. Improvements in the sensitivity of searches for GW signals from CCSN are highly desirable. Several methods have been proposed based on various likelihood-based regulators that work on data from a network of detectors We have developed an analysis pipeline based on a new way to effectively enhance the signal to noise ratio leading to a higher efficiency detection and increase of the detection range. Results using real LIGO noise and some of the current CCSN explosion models will be discussed. 

Speaker: Dr. Soma Mukherjee (UTRGV, Physics and Astronomy)

Dr Mukherjee

About the speaker: Dr. Soma Mukherjee is a Professor and the Chair of the Physics and Astronomy department at the University of Texas Rio Grande Valley (UTRGV). She obtained Ph.D in Physics from the University of Calcutta, and did post-doctoral studies at LIGO-Caltech, Pennsylvania State University and Max Planck Institute of Gravitational Physik where she was a first a post-doctoral scholar and then a faculty-equivalent scientist. She joined the University of Texas Brownsville in 2003 Fall and the UTRGV in 2015. She is a member of the LIGO Scientific Collaboration (LSC) since its inception in 1997. More recently, she is a co-author (with the LSC) on the Gravitational Wave (GW) discovery paper in Phys Rev Lett in 2016 and a winner (as an LSC member) of the Breakthrough Prize in Fundamental Physics, Gruber Cosmology Prize and other recognitions for her contribution to the LSC GW research. She has co-authored over 200 publications, been a PI, co-PI and senior investigator on numerous NSF and NASA grants, delivered innumerable invited talks across the world and mentored many undergraduate and graduate students. 

Upcoming Physics Colloquium in Spring 2019

Mar 1: Dr. Sanju Gupta (Western Kentucky Univ.)

Mar 8: Dr. Mario Diaz (UTRGV, Physics and Astronomy)

Mar 15: Spring break

Mar 22: Dr. Hyeongjun Kim (UTRGV, Physics and Astronomy)

Mar 29: COS Annual Research Conference

Apr 5: Dr. Sarbajit Banerjee (Texas A&M Univ.-College Station, Chemistry)

Apr 12: Dr. Stojan Rebic (PRL Assoc. Editor)

Apr 18: Dr. Matthew Benacquista (UTRGV, Physics and Astronmomy, NSF)

Apr 26: Dr. Shervin Fatehi (UTRGV, Chemistry)

May 3: Final exam week


Past Physics Colloquium 2019

Past Physics Colloquium 2018

Past Physics Colloquium 2017

Past Physics Colloquium 2003 - 2017


Physics Colloquium