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Photon-ALP oscillations at CTA energies
by M. Kachelriess and J. Tjemsland
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Jonas Tjemsland |
| Submission information | |
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| Preprint Link: | scipost_202210_00003v1 (pdf) |
| Date accepted: | 2023-04-28 |
| Date submitted: | 2022-10-01 19:56 |
| Submitted by: | Tjemsland, Jonas |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 14th International Conference on Identification of Dark Matter (IDM2022) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
Axions and axion-like-particles (ALPs) are well motivated beyond the standard model particles that can explain a variety of unsolved problems in physics, such as the strong CP problem and the nature of dark matter. These particles are characterised by their two-photon coupling, which leads to so-called photon-ALP oscillation as photons propagate through an external magnetic field. Such oscillations lead to characteristic signatures in the energy spectrum of high-energy photons from astrophysical sources, allowing us to probe the existence of ALPs and possibly dark matter. We review the signatures from ALPs in photon spectra and discuss a new method that can be used to directly search for the energy dependence of the oscillations. The focus is on photons at TeV-energies relevant for the upcoming Cherenkov Telescope Array (CTA).
Published as SciPost Phys. Proc. 12, 043 (2023)
Reports on this Submission
Anonymous Report 1 on 2022-11-9 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202210_00003v1, delivered 2022-11-09, doi: 10.21468/SciPost.Report.6110
Report
Discusses the effect of photon-ALP oscillations as photons propagate in extragalactic magnetic fields in the high-energy spectrum of photons at TeV-energies. This study is relevant for the upcoming Cherenkov Telescope Array. I recommend this proceeding for publication.