39 citations · 83 across the 10 of their papers we have counts for
5 papers · 1 filter
Model-agnostic basis functions for the 2-point correlation function of dark matter in linear theory
Aseem Paranjape, Ravi K. Sheth
We consider approximating the linearly evolved 2-point correlation function (2pcf) of dark matter in a cosmological model with parameters $\boldsymbol…
Leveraging protohalos and scale-dependent bias to calibrate the BAO scale in real space
Sasha Gaines, Farnik Nikakhtar, Nikhil Padmanabhan +1
The location of the baryon acoustic oscillation (BAO) feature in the two-point correlation function (2PCF) of matter produces a standard ruler that is useful for the measurement of…
Eigen-decomposition of Covariance matrices: An application to the BAO Linear Point
Jaemyoung Jason Lee, Farnik Nikakhtar, Aseem Paranjape +1
The Baryon Acoustic Oscillation (BAO) feature in the two-point correlation function (TPCF) of discrete tracers such as galaxies is an accurate standard ruler. The covariance matrix…
The Stability of the BAO Linear Point under Modified Gravity
Jaemyoung Jason Lee, Bartolomeo Fiorini, Farnik Nikakhtar +1
Baryon Acoustic Oscillations (BAOs) are crucial in cosmological analysis, providing a standard ruler, as well as constraints on dark energy. In General Relativity models, the BAO L…
Displacement Field Analysis via Optimal Transport: Multi-Tracer Approach to Cosmological Reconstruction
Farnik Nikakhtar, Ravi K. Sheth, Nikhil Padmanabhan +2
We demonstrate the effectiveness of one of the many multi-tracer analyses enabled by Optimal Transport (OT) reconstruction. Leveraging a semi-discrete OT algorithm, we determine th…