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Joseph Conlon (Oxford)
Monday 18 January 2016, 13:00-14:00
Galaxy Clusters as Tele-ALP-scopes
- đ¤ Speaker: Joseph Conlon (Oxford)
- đ Date & Time: Monday 18 January 2016, 13:00 - 14:00
- đ Venue: CMS, Pav. B, CTC Common Room (B1.19) [Potter Room]
Abstract
Axion-like particles (ALPs) are a conjectured Beyond-the-Standard-Model particle with good theoretical motivation. They are characterised by interconversion of photons and ALPs in astrophysical magnetic fields. At X-ray energies galaxy clusters are the most efficient interconvertors of axion-like particles to photons in the universe. I discuss the physics and phenomenology of ALPs, in particular within galaxy clusters, and describe their astrophysical implications in relation to two topics: the recently observed 3.5 keV line and the use of small-scale structure within the X-ray thermal bremsstrahlung spectrum of galaxy clusters to search for/constrain ALPs.
Series This talk is part of the Cosmology Lunch series.
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