745 citations · 4k across the 28 of their papers we have counts for
26 papers
Analytic bispectrum covariance for galaxy survey cosmology
Utkarsh Giri, Henry S. Grasshorn Gebhardt, Olivier Dore
The bispectrum of galaxy distribution remains an underutilized statistic in cosmological data analysis. This can be attributed to mathematical and computational challenges associat…
If at First You Don't Succeed, Trispectrum: I. Estimating the Matter Power Spectrum Covariance with Higher-Order Statistics
Samuel Goldstein, Kendrick M. Smith, Utkarsh Giri +1
We present a method to estimate non-Gaussian power spectrum covariance matrices by directly measuring the response of the small-scale power spectrum to long-wavelength perturbation…
A pulsar-like swing in the polarisation position angle of a nearby fast radio burst
Ryan Mckinven, Mohit Bhardwaj, Tarraneh Eftekhari +41
Fast radio bursts (FRBs) last for milliseconds and arrive at Earth from cosmological distances. While their origin(s) and emission mechanism(s) are presently unknown, their signals…
Cosmological constraints from harmonic space analysis of DES Y3 3x2 clustering
Utkarsh Giri, Sai Chaitanya Tadepalli
The large-scale distribution of matter, as mapped by photometric surveys like the Dark Energy Survey (DES), serves as a powerful probe into cosmology. It is especially sensitive to…
Modeling the Morphology of Fast Radio Bursts and Radio Pulsars with fitburst
Emmanuel Fonseca, Ziggy Pleunis, Daniela Breitman +11
We present a framework for modeling astrophysical pulses from radio pulsars and fast radio bursts (FRBs). This framework, called fitburst, generates synthetic representations of dy…
Updating the first CHIME/FRB catalog of fast radio bursts with baseband data
FRB Collaboration, Mandana Amiri, Bridget C. Andersen +57
In 2021, a catalog of 536 fast radio bursts (FRBs) detected with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) radio telescope was released by the CHIME/FRB Collaborat…