Cygnus X-3 Revisited: 10 Years of Muon and Radio Observations
Soudan 2 Collaboration

TL;DR
This study analyzes a decade of underground muon and radio observations of Cygnus X-3, finding potential correlations between muon flux excesses and major radio flares, suggesting possible high-energy particle emissions from the source.
Contribution
It provides a long-term analysis of muon flux from Cygnus X-3 and investigates its correlation with radio flares, offering new insights into high-energy processes in the source.
Findings
Some muon flux excesses coincide with major radio flares.
Muon events may be distributed around Cygnus X-3 with a Gaussian spread.
Instrumental angular spread verified by moon shadow observation.
Abstract
The Soudan 2 deep underground tracking calorimeter has recorded cosmic ray muon tracks from the direction of the galactic x-ray binary Cygnus X-3 on most transits during the interval 1989-1998. We analyze these events in the context of previous reports of Cygnus X-3-related muon flux during major radio flares of that source. We find some evidence for excess flux during a small number of transits coincident with major radio flares. We also find an indication that these events may be distributed around the source with a Gaussian point spread function with , larger than the instrumental angular spread of , verified by observation of the shadow of the moon.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Computational Physics and Python Applications · Scientific Research and Discoveries
