Relation between positional & strength asymmetries of double radio sources associated with active galaxies
Abstract
We bring out the identity between two ways of defining a single parameter to combine positional & strength asymmetries of extended extragalactic double radio sources associated with active galaxies. Thus, (r.s - 1)/[(1 + r).(1 + s)], combining arm ratio r (defined to be <= 1, i.e., shorter to longer arm) & strength ratio s (in the sense closer to farther, so that it may be <, > or = 1), is identical to -(1/2)[(1 - fr)/(1 + fr) - t], where fr is strength ratio defined >= 1 (i.e., stronger to weaker), & t = +/- (Q - 1)/(Q + 1), +/- signs applying respectively to doubles with closer hotspot fainter & those with closer hotspot brighter, while Q is arm ratio defined >= 1. Keywords: active galaxies - double radio sources - bilateral symmetry - arm ratio - flux ratio
Cite
@article{arxiv.0909.4284,
title = {Relation between positional & strength asymmetries of double radio sources associated with active galaxies},
author = {Dilip G Banhatti},
journal= {arXiv preprint arXiv:0909.4284},
year = {2009}
}
Comments
3 pages