On the spherical-axial transition in supernova remnants

International Conference on Astronomy, Astrophysics and Astrobiology

May 30-31, 2018 Osaka, Japan

Lorenzo Zaninetti

Torino University, Italy

Posters & Accepted Abstracts: J Astrophys Aerospace Technol

Abstract :

In this communication we derive some first order differential equations which model the classical and the relativistic thin layer approximations in the presence of a circumstellar medium with a density which is decreasing in the distance $z$ from the equatorial plane. The circumstellar medium is assumed to follow a density profile with $z$ of hyperbolic type, power law type, exponential type or Gaussian type. The first order differential equations are solved analytically, or numerically, or by a series expansion, or by Pad\'e approximant. The initial conditions are chosen in order to model the temporal evolution of SN 1987A over 23 years and others supernova remnants. zaninett@ph.unito.it