Ritesh Bachhar
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View article: Incorporating waveform calibration error in gravitational-wave modeling and inference for SEOBNRv4
Incorporating waveform calibration error in gravitational-wave modeling and inference for SEOBNRv4 Open
As gravitational wave (GW) detector networks continue to improve in sensitivity, the demand on the accuracy of waveform models which predict the GW signals from compact binary coalescences is becoming more stringent. At high signal-to-nois…
View article: Gravitational wave surrogate model for spinning, intermediate mass ratio binaries based on perturbation theory and numerical relativity
Gravitational wave surrogate model for spinning, intermediate mass ratio binaries based on perturbation theory and numerical relativity Open
We present BHPTNRSur2dq1e3, a reduced order surrogate model of gravitational waves emitted from binary black hole (BBH) systems in the comparable to large mass ratio regime with aligned spin ($χ_1$) on the heavier mass ($m_1$). We trained …
View article: Binary Black Hole Coalescence Phenomenology from Numerical Relativity
Binary Black Hole Coalescence Phenomenology from Numerical Relativity Open
The major source of ground-based gravitational wave detectors, the inspiral and merger of comparable mass binary black holes (BBH), consists of a slow quasicircular inspiral, a merger to form a single remnant hole, and the quasinormal ring…
View article: Angular Momentum for Black Hole Binaries in Numerical Relativity
Angular Momentum for Black Hole Binaries in Numerical Relativity Open
The extensive catalog of waveforms, with details of binary black hole inspiral and merger, offer an opportunity to understand black hole interactions beyond the large separation regime. We envision a research program that focuses on the tr…
View article: Timing and spectral studies of Cen X-3 in multiple luminosity states using $\textit{AstroSat}$
Timing and spectral studies of Cen X-3 in multiple luminosity states using $\textit{AstroSat}$ Open
We present the results of timing and spectral analysis of the HMXB pulsar, Cen X-3, with the help of observations carried out using the Large Area X-ray Proportional Counter (LAXPC) on board $\textit{AstroSat}$. As part of our analysis, we…