12 citations · 16 across the 4 of their papers we have counts for
5 papers
Is DESI Seeing Dynamical Dark Energy, or a Cosmic Glitch in Gravity?
Robin Y. Wen, Lukas Tobias Hergt, Niayesh Afshordi +1
Combined baryon acoustic oscillation and cosmic microwave background data have begun to mildly favor departures from . This is usually framed as 2-parameter dynamica…
HierArchical Wavelet Coefficients on the Sphere (HAWCS): the Scattering Transform on Spherical Maps
Arefe Abghari, Lukas T. Hergt, Douglas Scott +1
Extracting Gaussian information from data is well understood, but characterizing non-Gaussianity is challenging. We introduce HAWCS, a healpy-based Python package for efficiently c…
Planck PR4 (NPIPE) map-space cosmic birefringence
Raelyn Marguerite Sullivan, Arefe Abghari, Patricia Diego-Palazuelos +2
Cosmic birefringence is an effect where the plane of polarisation of the cosmic microwave background (CMB) is rotated by an angle through coupling to a hypothetical parity-viol…
A glitch in gravity: cosmic Lorentz-violation from fiery Big Bang to glacial heat death
Robin Y. Wen, Lukas T. Hergt, Niayesh Afshordi +1
One regime where we might see departures from general relativity is at the largest accessible scales, with a natural choice in cosmology being the cosmological horizon (or Hubble)…
Reassessment of the dipole in the distribution of quasars on the sky
Arefe Abghari, Emory F. Bunn, Lukas T. Hergt +4
We investigate recent claims by Secrest et al. of an anomalously large amplitude of the dipole in the distribution of CatWISE-selected quasars on the sky. Two main issues indicate…