39 citations · 83 across the 10 of their papers we have counts for
12 papers
Basis function expansions of the two-point correlation function and reconstruction of the cosmological distance scale
Fatima Abd Alrahman, Farnik Nikakhtar, Marcello Musso +2
The shape of the correlation function of galaxy pairs can be used as a cosmological distance indicator. Most estimators of this shape require that one bin the pair counts, and cons…
Zel'dovich smearing approximation of the BAO feature for model-agnostic cosmological inference
Aseem Paranjape, Ravi K. Sheth
A model-agnostic description of the baryon acoustic oscillation (BAO) feature in redshift space requires a number of ingredients. Physically, one must describe the impact of cosmol…
Correlation between H emitters and their cosmic web environment at
Ivan Rapoport, Vincent Desjacques, Ehud Behar +1
Future near-infrared spectroscopic galaxy surveys will target high-redshift emission-line galaxies (ELGs) to test cosmological models. Deriving optimal constraints from emission-li…
Scale-dependent bias and mode coupling in redshift-space clustering near the BAO scale
Aseem Paranjape, Ravi K. Sheth
The baryon acoustic oscillation (BAO) feature in the 2-point clustering of biased tracers in redshift space can be described in a model-agnostic manner, relying only on the assumpt…
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…
The dependence of galaxy clustering on tidal environment in the Sloan Digital Sky Survey
Aseem Paranjape, Oliver Hahn, Ravi K. Sheth
The influence of the Cosmic Web on galaxy formation and evolution is of great observational and theoretical interest. We investigate whether the Cosmic Web leaves an imprint in the…
The massive end of the luminosity and stellar mass functions and clustering from CMASS to SDSS: Evidence for and against passive evolution
M. Bernardi, A. Meert, R. K. Sheth +4
We describe the luminosity function, based on Sersic fits to the light profiles, of CMASS galaxies at z ~ 0.55. Compared to previous estimates, our Sersic-based reductions imply mo…
Peak-peak correlations in the cosmic background radiation from cosmic strings
M. Sadegh Movahed, B. Javanmardi, Ravi K. Sheth
We examine the two-point correlation function of local maxima in temperature fluctuations at the last scattering surface when this stochastic field is modified by the additional fl…