1.9k citations · 4k across the 79 of their papers we have counts for
8 papers · 1 filter
Rotation method for accelerating multiple-spherical Bessel function integrals against a numerical source function
Zachary Slepian, Yin Li, Marcel Schmittfull +1
A common problem in cosmology is to integrate the product of two or more spherical Bessel functions (sBFs) with different configuration-space arguments against the power spectrum o…
Accelerating Computation of the Nonlinear Mass by an Order of Magnitude
Alex Krolewski, Zachary Slepian
The nonlinear mass is a characteristic scale in halo formation that has wide-ranging applications across cosmology. Naively, computing it requires repeated numerical integration to…
Astro2020 APC White Paper: The MegaMapper: a z > 2 spectroscopic instrument for the study of Inflation and Dark Energy
David J. Schlegel, Juna A. Kollmeier, Greg Aldering +74
MegaMapper is a proposed ground-based experiment to measure Inflation parameters and Dark Energy from galaxy redshifts at 2<z<5. A 6.5-m Magellan telescope will be coupled with DES…
Astrobites as a Community-led Model for Education, Science Communication, and Accessibility in Astrophysics
Gourav Khullar, Susanna Kohler, Tarini Konchady +21
Support for early career astronomers who are just beginning to explore astronomy research is imperative to increase retention of diverse practitioners in the field. Since 2010, Ast…
Astro2020 Project White Paper: The Cosmic Accelerometer
Stephen S. Eikenberry, Anthony Gonzalez, Jeremy Darling +15
We propose an experiment, the Cosmic Accelerometer, designed to yield velocity precision of cm/s with measurement stability over years to decades. The first-phase Cosmic A…
Astro2020 White Paper: A Direct Measure of Cosmic Acceleration
Stephen Eikenberry, Anthony Gonzalez, Jeremy Darling +8
Nearly a century after the discovery that we live in an expanding Universe, and two decades after the discovery of accelerating cosmic expansion, there remains no direct detection…
Inflation and Dark Energy from spectroscopy at
Simone Ferraro, Michael J. Wilson, Muntazir Abidi +140
The expansion of the Universe is understood to have accelerated during two epochs: in its very first moments during a period of Inflation and much more recently, at , when D…
Automatic Kalman-Filter-based Wavelet Shrinkage Denoising of 1D Stellar Spectra
Sankalp Gilda, Zachary Slepian
We propose a non-parametric method to denoise 1D stellar spectra based on wavelet shrinkage followed by adaptive Kalman thresholding. Wavelet shrinkage denoising involves applying…