We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Doppler factor, Lorentz factor and viewing angle of superluminal quasars.
- Authors
Onuchukwu, C.; Ubachukwu, A.
- Abstract
We carried out the investigation of the properties of features seen within superluminal sources often referred to as components. Our result indicates a fairly strong correlation of r∼0.76 between component radial distance L and component size ℜ. Assumption of simple ballistic motion and free adiabatic expansion, enabled us to use the observed jet component parameters to constrain the Doppler factor, Lorentz factor and the lower limit to the viewing angle with respect to a distant observer. The estimated average Doppler factor, Lorentz factor and viewing angle respectively are 10.3±5.0, 18.3±6.2 and 3.7±2.3 for Γ=4/3; while the values obtained for Γ=5/3 are 12.2±5.9,17.2±5.1 and 2.9±1.6, where Γ is the adiabatic index. The large scatter in our results may be due to the uncertainties introduced by the assumptions made.
- Subjects
DOPPLER effect; SUPERLUMINAL effect; LORENTZ force; QUASARS; ADIABATIC expansion; ACTIVE galaxies
- Publication
Astrophysics & Space Science, 2013, Vol 348, Issue 1, p193
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-013-1549-4