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31 papers · 2 filters
What it takes to solve the Hubble tension through modifications of cosmological recombination
Nanoom Lee, Yacine Ali-Haïmoud, Nils Schöneberg +1
We construct data-driven solutions to the Hubble tension which are perturbative modifications to the fiducial CDM cosmology, using the Fisher bias formalism. Taking as proof of…
CMB temperature trispectrum from accreting primordial black holes
Trey W. Jensen, Yacine Ali-Haïmoud
It is known that Primordial Black Holes (PBHs) can leave an imprint on Cosmic Microwave Background (CMB) anisotropy power spectra, due to their accretion-powered injection of energ…
Constraining the Star Formation Rate using Joint CIB Continuum and [CII] Intensity Mapping
Zilu Zhou, Abhishek S. Maniyar, Anthony R. Pullen
Line intensity mapping (LIM) experiments probing the nearby universe can expect a considerable amount of cosmic infrared background (CIB) contiuum emission coming from near and far…
Characteristic Functions for Cosmological Cross-Correlations
Patrick C. Breysse, Dongwoo T. Chung, Håvard T. Ihle
We introduce a novel unbiased, cross-correlation estimator for the one-point statistics of cosmological random fields. One-point statistics are a useful tool for analysis of highly…
Perturbation theory with dispersion and higher cumulants: non-linear regime
Mathias Garny, Dominik Laxhuber, Roman Scoccimarro
We present non-linear solutions of Vlasov Perturbation Theory (VPT), describing gravitational clustering of collisionless dark matter with dispersion and higher cumulants induced b…
Perturbation theory with dispersion and higher cumulants: framework and linear theory
Mathias Garny, Dominik Laxhuber, Roman Scoccimarro
The standard perturbation theory (SPT) approach to gravitational clustering is based on a fluid approximation of the underlying Vlasov-Poisson dynamics, taking only the zeroth and…