Event calendar file
State of the Universe
New black hole mergers from a search pipeline for gravitational waves with higher-order harmonics
by Dr. Digvijay Wadekar (IAS Princeton)
Friday, September 8, 2023
from
to
(Asia/Kolkata)
at A304 and on zoom : https://us02web.zoom.us/j/82512956967?pwd=angyQ0ZDdHZUdzFUbjkybmxsWFNFUT09 Meeting ID: 825 1295 6967 Passcode: 384194
at A304 and on zoom : https://us02web.zoom.us/j/82512956967?pwd=angyQ0ZDdHZUdzFUbjkybmxsWFNFUT09 Meeting ID: 825 1295 6967 Passcode: 384194
| Description |
Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo data include GW waveforms with only the dominant quadrupole mode (l,m)=(2,2), i.e., omitting higher-order modes such as (l,m)=(3,3),(4,4). I will present detections of new black hole mergers in the LIGO-Virgo O3 data from a search pipeline that includes the higher-order modes. Some of the new detections are astrophysically interesting as the black holes occupy the upper mass gap and/or are in high-redshift (1<z<2) range. Towards the end, I will change gears and present results on GW searches for exotic objects with large tidal deformabilities (e.g., boson stars and black holes with axion clouds). |
