# Astrophysical Limits on Very Light Axion-like Particles from Chandra Grating Spectroscopy of NGC 1275

@article{Reynolds2020AstrophysicalLO,
title={Astrophysical Limits on Very Light Axion-like Particles from Chandra Grating Spectroscopy of NGC 1275},
author={C. S. Reynolds and M. C. Marsh and H. Russell and A. Fabian and Robyn N. Smith and F. Tombesi and S. Veilleux},
journal={The Astrophysical Journal},
year={2020},
volume={890},
pages={59}
}
• C. S. Reynolds, +4 authors S. Veilleux
• Published 2020
• Physics
• The Astrophysical Journal
• Axions/axion-like particles (ALPs) are a well motivated extension of the Standard Model and are generic within String Theory. The X-ray transparency of the intracluster medium (ICM) in galaxy clusters is a powerful probe of light ALPs (with mass $<10^{-11}\,{\rm eV}$); as X-ray photons from an embedded or background source propagate through the magnetized ICM, they may undergo energy-dependent quantum mechanical conversion into ALPs (and vice versa), imprinting distortions on the X-ray spectrum… CONTINUE READING