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Digvijay Wadekar (Institute for Advanced Study, USA)
Date & Time
Thu, 24 August 2023, 11:00 to 12:30
Madhava Lecture Hall and Online

Nearly all of the previous GW searches include waveforms with only the quadrupole mode (l,m)=(2,2), i.e., omitting higher-order modes such as (l,m)=(3,3),(4,4). We will show that a combination of post-Newtonian formulae and machine learning tools can be used to efficiently introduce higher-mode templates into a quadrupole-only search pipeline. This increases the sensitivity of the search to binary black holes (BBH) in the high mass regime and asymmetric mass-ratio systems. We also develop tools to downweight short-duration glitches in the IAS pipeline and further improve the search sensitivity to high-mass BBHs. Finally, we will discuss the detection of new BBH mergers in the LIGO-VIRGO O3 data with our improved search pipeline.

Zoom link:
Meeting ID: 881 4069 2588
Passcode: 559087