16 citations · 42 across the 8 of their papers we have counts for
8 papers
On the Presence of a Tertiary Compact Object in GW190814
Lalit Pathak, Hemantakumar Phurailatpam, Achamveedu Gopakumar
Gravitational waves from merging compact binaries are sensitive to line-of-sight acceleration (LOSA) induced by a massive companion in their vicinity. Interestingly, the leading-or…
Blinded Mock Data Challenge: Is the Spectral Siren Technique Robust for Measuring the Hubble Constant?
Christos Karathanasis, Suvodip Mukherjee, Lalit Pathak +5
The measurement of the Hubble constant from gravitational wave (GW) sources is one of the independent avenues to shed light on the Hubble tension, which is associated with about an…
A meshfree approach for rapid reconstruction of compact binary sources detected in the network of international gravitational wave detectors
Lalit Pathak
This thesis explores parameter estimation methods for rapidly reconstructing compact binary sources generating gravitational waves. It employs numerical linear algebra and meshfree…
Rapid parameter estimation with the full symphony of compact binary mergers using meshfree approximation
Abhishek Sharma, Lalit Pathak, Soumen Roy +1
We present a fast Bayesian inference framework to address the growing computational cost of gravitational-wave parameter estimation. The increased cost is driven by improved broadb…
Fast and faithful interpolation of numerical relativity surrogate waveforms using meshfree approximation
Lalit Pathak, Amit Reza, Anand S. Sengupta
Several theoretical waveform models have been developed over the years to capture the gravitational wave emission from the dynamical evolution of compact binary systems of neutron…
Pinpointing coalescing binary neutron star sources with the IGWN, including LIGO-Aundha
Sachin R. Shukla, Lalit Pathak, Anand S. Sengupta
LIGO-Aundha (A1), the Indian gravitational wave detector, is expected to join the IGWN and begin operations in the early 2030s. We study the impact of A1 on the accuracy of determi…
Prompt sky localization of compact binary sources using a meshfree approximation
Lalit Pathak, Sanket Munishwar, Amit Reza +1
The number of gravitational wave signals from the merger of compact binary systems detected in the network of advanced LIGO and Virgo detectors is expected to increase considerably…
Does the speed of gravitational waves depend on the source velocity?
Rajes Ghosh, Sreejith Nair, Lalit Pathak +2
The second postulate of special relativity states that the speed of light in vacuum is independent of the emitter's motion. The test of this postulate so far remains unexplored for…