Astronomy and Astrophysics Seminars
A Prototype Interferometric Torsion Balance for Low-Frequency Gravitational-Wave Detection
by Dr. Krishna Venkateswara (Department of Physics University of Washington Seattle, USA)
Monday, November 20, 2017
from
to
(Asia/Kolkata)
at DAA SEMINAR ROOM ( A269 )
at DAA SEMINAR ROOM ( A269 )
TIFR
Description |
There have been recent proposals to build terrestrial gravitational-wave detectors in the ~0.1 to 10 Hz frequency range using torsion balances. Such detectors will be sensitive to a different class of long-lived sources compared to LIGO, such as intermediate-mass black-hole binaries. The seminar will describe an early prototype for such a detector, consisting of a torsion balance with an interferometric angle readout with a sensitivity of ~ picoradian/rt(Hz). Experimental challenges and results will be discussed along with plans for near-term upgrades and projected sensitivities. |