Probing late-time annihilations of oscillating asymmetric dark matter via rotation curves of galaxies

Abstract

In this paper, we explore the Oscillating Asymmetric Dark Matter (OADM) model to address the core-cusp problem, aiming to resolve the discrepancy between the predictions of the $\Lambda \mathrm{CDM}$ cosmological model and the observed dark matter profiles in dwarf spheroidal galaxies. The reactivation of dark matter annihilation during the structure formation epoch is possible if there is a small Majorana mass term that breaks the conservation of dark matter particle number, leading to oscillations between dark matter and its antiparticle. We analyzed the effects of the annihilation mechanism in the galaxy rotation curves of the SPARC and LITTLE THINGS catalogs. We searched for the characteristics of the OADM model which best describes the data. Our results show that the OADM model can successfully turn originally cusp-type halos into core-type ones according to our data sample.

References in corpus (28)

• The Structure of Cold Dark Matter Halos
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• A direct empirical proof of the existence of dark matter
• Observational evidence for self-interacting cold dark matter
• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Self-interactions and Small Scale Structure
• Direct constraints on the dark matter self-interaction cross-section from the merging galaxy cluster 1E0657-56
• The Waning of the WIMP? A Review of Models, Searches, and Constraints
• Rotation Curves of Spiral Galaxies
• Resolving the Structure of Cold Dark Matter Halos
• The Core-Cusp Problem
• SPARC: Mass Models for 175 Disk Galaxies with Spitzer Photometry and Accurate Rotation Curves
• Asymmetric Dark Matter
• Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
• Cold dark matter: controversies on small scales
• Review of asymmetric dark matter
• High-resolution mass models of dwarf galaxies from LITTLE THINGS
• Little Things
• Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S
• The distribution of dark matter in galaxies
• Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies
• A fresh look at linear cosmological constraints on a decaying dark matter component
• Search for $\gamma$-ray line signals from dark matter annihilations in the inner Galactic halo from ten years of observations with H.E.S.S
• A comprehensive catalog of dark matter halo models for SPARC galaxies
• Converting non-relativistic dark matter to radiation
• Oscillating Asymmetric Dark Matter
• Constraints on dark matter self-interaction from the internal density profiles of X-COP galaxy clusters
• Late-Time Dark Matter Oscillations and the Core-Cusp Problem