The Ring Produced by an Extra-Galactic Superbubble in Flat Cosmology
Cosmology and Nongalactic Astrophysics
2017-04-28 v1 Astrophysics of Galaxies
Abstract
A superbubble which advances in a symmetric Navarro--Frenk--White density profile or in an auto-gravitating density profile generates a thick shell with a radius that can reach 10 kpc. The application of the symmetric and asymmetric image theory to this thick 3D shell produces a ring in the 2D map of intensity and a characteristic `U' shape in the case of 1D cut of the intensity. A comparison of such a ring originating from a superbubble is made with the Einstein's ring. A Taylor approximation of order 10 for the angular diameter distance is derived in order to deal with high values of the redshift.
Cite
@article{arxiv.1704.08541,
title = {The Ring Produced by an Extra-Galactic Superbubble in Flat Cosmology},
author = {L. Zaninetti},
journal= {arXiv preprint arXiv:1704.08541},
year = {2017}
}
Comments
22 pages , 16 figures