arXivResearchAug 11, 20261 min
Constraints on magnetic monopoles from X-ray observations of neutron stars
Astroboat summary
Magnetic monopoles are captured efficiently by neutron stars, and if they catalyze nucleon decay, the decay products would thermalize and generate observable X-ray surface emission. We use archival Chandra, XMM-Newton, and Swift-XRT data for old isolated millisecond pulsars to place conservative limits on the Galactic monopole flux ($F_M$).
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