[W61] Luca Visinelli: The axion in cosmology and astrophysics

Wednesday 11 April 2018, 15.00 GMT

Questions via youtube chat

The axion in cosmology and astrophysics

Speaker
Luca Visinelli
Stockholm University and Nordita
Sweden

Host
Federico von der Pahlen

Abstract
The axion is a well-motivated hypothetical particle which candidates to constitute the observed cold dark matter budget. In this talk, I first revise the properties of the axion in light of current bounds from astrophysics and cosmology, and give some prospects for future searches. I then discuss some mechanisms to relax such bounds. I conclude by presenting a possible detection challenge, namely axion stars.

References
1.- Dilute and dense axion stars [ArXiv:1710.08910]
2.- Light axion-like dark matter must be present during inflation [ArXiv:1703.08798]
3.- Axion cold dark matter in view of BICEP2 results [ArXiv:1403.4594]
4.- Axion cold dark matter in non-standard cosmologies [ArXiv:0912.0015]
5.- Dark Matter Axions Revisited [ArXiv:0903.4377]

Slides

One thought on “[W61] Luca Visinelli: The axion in cosmology and astrophysics

  1. Hi, Luca! Very nice talk. I am extremely interested in your axion stars. Is there any way that some of these axion stars – specially those that are metastable – to become stabilized in the presence of Cosmic Background Radiation? Cheers,

    Hugo.

    Like

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