Searches for Axion-Like Particles with NGC1275: Current and Future Bounds
Nicholas Jennings
TL;DR
This paper uses X-ray observations of galaxy cluster NGC1275 to search for axion-like particles, setting current bounds and predicting future constraints with upcoming observatories.
Contribution
It presents new bounds on ALP-photon coupling from Chandra data and forecasts future limits with the Athena observatory.
Findings
Current bounds from Chandra observations constrain ALP-photon coupling.
Predicted bounds for Athena will improve sensitivity to ALPs.
No significant ALP-induced oscillations detected in NGC1275 spectra.
Abstract
Galaxy clusters contain large magnetic fields that make them excellent targets to search for ultralight Axion-Like Particles (ALPs). ALP-photon interconversion imprints quasi-sinusoidal oscillations on the X-ray spectra of point sources in or behind the cluster. The absence of substantial oscillations allows us to place bounds on . Here the bounds from the {\it Chandra} X-ray observations of NGC1275 are presented, as well as those predicted for the {\it Athena} X-ray observatory, due to launch in 2028.
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Taxonomy
TopicsDark Matter and Cosmic Phenomena · Astrophysics and Cosmic Phenomena · Galaxies: Formation, Evolution, Phenomena