Dark matter interactions alter early universe

Paper Title:

Ruling out Strongly Interacting Dark Matter-Dark Radiation Models from Joint Cosmic Microwave Background-Quasar Observations

Published on:

7 August 2023

Primary Category:

Cosmology and Nongalactic Astrophysics

Paper Authors:

Atrideb Chatterjee,

Sourav Mitra,

Amrita Banerjee

Bullets

Key Details

•

Rules out interacting dark matter-dark radiation models

•

Combines cosmic microwave background and quasar data

•

Most stringent constraint on these models to date

•

Interactions would alter early universe evolution

•

Narrows viable theoretical dark matter models

Explore the topics in this paper

cosmic microwave background

cosmological probes

dark matter

dark radiation

observational cosmology

AI generated summary

Dark matter interactions alter early universe

This paper rules out a class of theoretical models where dark matter particles interact with dark radiation. Using precise measurements of the cosmic microwave background and distant quasars, the study shows these interacting models fail to match observed data. The findings limit viable dark matter theories and demonstrate the power of combining multiple cosmological probes.