TL;DR
This paper investigates how the shapes of supernova remnants are influenced by explosion geometry and environmental factors, using new quantitative methods applied to archival X-ray and infrared images of SNRs.
Contribution
It introduces techniques to quantify SNR morphologies and applies them to extensive archival data to analyze asymmetries and their origins.
Findings
SNRs exhibit significant asymmetries.
Morphologies are influenced by both explosion geometry and environment.
Results help distinguish between 'nature' and 'nurture' effects.
Abstract
Evidence has mounted that Type Ia and core-collapse (CC) supernovae (SNe) can have substantial deviations from spherical symmetry; one such piece of evidence is the complex morphologies of supernova remnants (SNRs). However, the relative role of the explosion geometry and the environment in shaping SNRs remains an outstanding question. Recently, we have developed techniques to quantify the morphologies of SNRs, and we have applied these methods to the extensive X-ray and infrared archival images available of Milky Way and Magellanic Cloud SNRs. In this proceeding, we highlight some results from these studies, with particular emphasis on SNR asymmetries and whether they arise from "nature" versus "nurture".
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