Cygnus Loop: A double bubble?
J. West, S. Safi-Harb, I. Reichardt, J. Stil, R. Kothes, T. Jaffe, and, GALFACTS team
TL;DR
This paper investigates whether the Cygnus Loop is a single supernova remnant or two overlapping remnants, using multi-wavelength observations and modeling to support the double remnant hypothesis.
Contribution
It introduces a model proposing that the Cygnus Loop consists of two supernova remnants aligned along the line of sight, explaining observed features better than a single-shell model.
Findings
Two-object model fits observed data better
Overlap region suggests interaction between remnants
Supports the double remnant hypothesis
Abstract
The Cygnus Loop is a well-studied supernova remnant (SNR) that has been observed across the electromagnetic spectrum. Although widely believed to be an SNR shell with a blow- out region in the south, we consider the possibility that this object is two SNRs projected along the same line-of-sight by using multi-wavelength images and modelling. Our results show that a model of two objects including some overlap region/interaction between the two objects has the best match to the observed data.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Solar and Space Plasma Dynamics