4 papers
Deus ex -- Is evidence for dynamical dark energy conditioned on early cosmology?
Nils Schöneberg, Rodrigo Calderón, Julien Lesgourgues
Some free-form reconstructions of the dark energy equation of state suggest that dynamical dark energy is the only explanation for the observed data. In this letter we argue that e…
High resolution Lyman-α forest constraints on dark matter-neutrino scattering
Markus R. Mosbech, Olga Garcia-Gallego, Vid Iršič +2
We present new constraints on models of dark matter interacting with neutrino, based on high-resolution Lyman- forest data. We perform a suite of full hydrodynamical simulations…
The world cup. II. A comprehensive competition between proposed Hubble tension solutions
Nils Schöneberg, Vivian Poulin, Angelo G. Ferrari +6
Cosmology stands at a crossroads. The Hubble tension has reached a nominal significance above , while analyses combining DESI BAO and Type Ia supernova data show emerging hints…
Robust -distortion constraints on primordial supermassive black holes from non-Gaussian perturbations
Christian T. Byrnes, Julien Lesgourgues, Devanshu Sharma
Explaining the origin of supermassive black holes via a primordial origin is severely challenged by the tight spectral distortion constraints on the amplitude of the primordial per…