Showing 2022 · astro-ph.COShow all

6 papers · 2 filters

astro-ph.CO2022★ 27 cited

Probing Lorentz-violating electrodynamics with CMB polarization

Luca Caloni, Serena Giardiello, Margherita Lembo +4

We perform a comprehensive study of the signatures of Lorentz violation in electrodynamics on the Cosmic Microwave Background (CMB) anisotropies. In the framework of the minimal St…

astro-ph.CO2022★ 6 cited

Quasi-spherical superclusters

Pekka Heinämäki, Pekka Teerikorpi, Marian Douspis +5

Generally the dynamical state of superclusters is poorly known. We study properties of superclusters and select a sample of quasi-spherical superclusters, the dynamics of which can…

astro-ph.CO2022★ 32 cited

Planck constraints on cross-correlations between anisotropic cosmic birefringence and CMB polarization

Marco Bortolami, Matteo Billi, Alessandro Gruppuso +2

Cosmic Birefringence (CB) is the in-vacuo rotation of the linear polarization direction of photons during propagation, caused by parity-violating extensions of Maxwell electromagne…

astro-ph.CO2022★ 34 cited

Do you smell something decaying? Updated linear constraints on decaying dark matter scenarios

S. Alvi, T. Brinckmann, M. Gerbino +2

The stability of particles in the cosmic soup is an important property that can affect the cosmic evolution. In this work, we update the constraints on the decaying cold dark matte…

astro-ph.CO2022

Massive merging cluster PSZ2G091 as seen by the NIKA2 camera

E. Artis, R. Adam, P. Ade +49

PSZ2 G091.83+26.11 is a galaxy cluster with M500 = 7.43 x 10^14 Msun at z = 0.822 1. This object exhibits a complex morphology with a clear bimodality observed in X-rays. However,…

astro-ph.CO2022★ 10 cited

No evidence for EDE from Planck data in extended scenarios

Emanuele Fondi, Alessandro Melchiorri, Luca Pagano

The latest data release from the ACT CMB experiment (in combination with previous WMAP data) shows evidence for an Early Dark Energy component at more than standard deviations.…