Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-24T23:07:52.281Z Has data issue: false hasContentIssue false
  • English
  • Français

Multi-wavelength emission from dark matter annihilation processes in galaxy clusters and dark matter sub-halos

Published online by Cambridge University Press:  29 January 2021

Remudin Reshid Mekuria
Remudin Reshid Mekuria*
Affiliation:
Department of Physics, Addis Ababa University, Addis Ababa, Ethiopia email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Multi-wavelength emission maps from dark matter (DM) annihilation processes in galaxy clusters are produced using Marenostrum-MultiDark SImulation of galaxy Clusters (MUSIC-2) high resolution cosmological simulations. Comparison made with observational radio emission flux data (spectral shape) and the spatial distribution from the simulated emission maps show that secondary particles from DM annihilation could describe the origin of energetic particles which are the sources of the diffuse radio emission observed in large number of galaxy clusters. DM sub-halos which are dominantly composed of DM, but with very little or no gas and stellar content, are ideal objects to study the nature and properties of DM. Therefore, statistical studies of a large number of them as well the emission maps of high mass-to-light ratio DM sub-halos will not only explain the observed diffused radio emission but also provide very crucial information about the nature and properties of DM particles.

Keywords

Dark mattergalaxy clustersub-haloradio emission
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 390 - 392
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

References

Colafrancesco, S., Profumo, S., & Ullio, P. 2006, Astronomy and Astrophysics, 455, 21 10.1051/0004-6361:20053887CrossRefGoogle Scholar
Feretti, L., Giovannini, G., Govoni, F., & Murgia, M. 2012, The Astronomy and Astrophysics Review, 20, 1, 54 10.1007/s00159-012-0054-zCrossRefGoogle Scholar
Sarazin, C. L. 1999, APJ, 520, 529 10.1086/307501CrossRefGoogle Scholar
Thierbach, M., Klein, U., & Wielebinski, R. 2003, Astronomy and Astrophysics, 397, 53 10.1051/0004-6361:20021474CrossRefGoogle Scholar
van Weeren, RJ., de Gasperin, F., Akamatsu, H., Brüggen, M., Feretti, L., Kang, H., Stroe, A. & Zandanel, F. 2019, Space Science Reviews, 215, 1, 16 10.1007/s11214-019-0584-zCrossRefGoogle Scholar