TITLE:
The Ring Produced by an Extra-Galactic Superbubble in Flat Cosmology
AUTHORS:
Lorenzo Zaninetti
KEYWORDS:
Cosmology, Observational Cosmology, Gravitational Lenses and Luminous Arcs
JOURNAL NAME:
Journal of High Energy Physics, Gravitation and Cosmology,
Vol.3 No.2,
April
27,
2017
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.