On the interaction of Supernova Remnants with their circumstellar medium: evolution, properties
Автор: Seminários do Departamento de Astronomia - UFRGS
Загружено: 2025-05-21
Просмотров: 75
Описание:
Alex Chiotelis (National Observatory of Athens)
On the interaction of Supernova Remnants with their circumstellar medium: evolution, properties and progenitors imprint
Abstract: Supernova remnants (SNRs) are the aftermath of supernova explosions, resulting from the interaction of the stellar ejecta with the medium that surrounds the explosion center. In most cases, the ambient medium properties deviate substantially from homogeneity and differ dramatically from the local interstellar medium properties, due to the mass outflows of the stellar progenitor system during
its pre-supernova evolution. The interaction of the supernova ejecta with the sculptured circumstellar structures alters the evolution of the SNR and the effects of this interaction are reflected in the morphology, kinematics, and emission properties of the resulting remnant. Thus, by deciphering the properties of SNRs through targeted observations and detailed modeling we are able to map the structure and geometry of the surrounding circumstellar medium through which we get crucial insights into the nature and evolution of the progenitor system.
In this review talk, we present the dominant processes that govern the interaction of the supernova ejecta with the surrounding circumstellar medium, we discuss the formation mechanisms behind frequently met structures in SNRs (e.g. bow-shocks, antisymmetric lobes, tori, equatorial belts, etc.) and we aim to provide directs links between the properties of the SNRs and the nature and evolution of their parent stellar systems.
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