Three dimensional evolution of SN 1987A in a self-gravitating disk

TL;DR

This paper models the asymmetric evolution of supernova remnant SN 1987A within a self-gravitating disk, incorporating photon losses and deriving a new law of motion to simulate observed ring structures.

Contribution

It introduces a physically motivated model of the ISM as a self-gravitating disk and derives a new law of motion within the thin layer approximation, including photon losses.

Findings

Successfully simulates the three observed rings of SN 1987A

Provides a physically meaningful alternative to exponential or power law ISM gradients

Enhances understanding of SNR evolution in self-gravitating environments

Abstract

The introduction of a exponential or power law gradient in the interstellar medium (ISM) allows to produce an asymmetric evolution of the supernova remnant (SNR) when the framework of the thin layer approximation is adopted. Unfortunately both the exponential and power law gradients for the ISM do not have a well defined physical meaning. The physics conversely is well represented by an isothermal self-gravitating disk of particles whose velocity is everywhere Maxwellian. . We derived a law of motion in the framework of the thin layer approximation with a control parameter of the swept mass. The photon's losses ,that are often neglected in the thin layer approximation, are modeled trough a velocity dependence. The developed framework is applied to SNR 1987A and the three observed rings are simulated.