96 citations · 668 across the 25 of their papers we have counts for
8 papers · 1 filter
Information content in the redshift-space galaxy power spectrum and bispectrum
Nishant Agarwal, Vincent Desjacques, Donghui Jeong +1
We present a Fisher information study of the statistical impact of galaxy bias and selection effects on the estimation of key cosmological parameters from galaxy redshift surveys;…
Looking for non-Gaussianity in all the right places: A new basis for non-separable bispectra
Joyce Byun, Nishant Agarwal, Rachel Bean +1
Non-Gaussianity in the distribution of inflationary perturbations, measurable in statistics of the cosmic microwave background (CMB) and large scale structure fluctuations, can be…
Cosmic Expansion in Extended Quasidilaton Massive Gravity
Tina Kahniashvili, Arjun Kar, George Lavrelashvili +3
Quasidilaton massive gravity offers a physically well-defined gravitational theory with non-zero graviton mass. We present the full set of dynamical equations governing the expansi…
Constraining the initial conditions of the Universe using large scale structure
Nishant Agarwal, Shirley Ho, Sarah Shandera
Primordial non-Gaussianity induces a scale-dependent bias in large scale structure (LSS) data, proportional to for the exact local ansatz. Recent work has shown th…
Sloan Digital Sky Survey III Photometric Quasar Clustering: Probing the Initial Conditions of the Universe using the Largest Volume
Shirley Ho, Nishant Agarwal, Adam D. Myers +18
The Sloan Digital Sky Survey has surveyed 14,555 square degrees of the sky, and delivered over a trillion pixels of imaging data. We present the large-scale clustering of 1.6 milli…
Characterizing unknown systematics in large scale structure surveys
Nishant Agarwal, Shirley Ho, Adam D. Myers +13
Photometric large scale structure (LSS) surveys probe the largest volumes in the Universe, but are inevitably limited by systematic uncertainties. Imperfect photometric calibration…