The relationship between the radio core-dominance parameter and spectral index in different classes of extragalactic radio sources (II)

ZY Pei, JH Fan, D Bastieri, U Sawangwit… - … in Astronomy and …, 2019 - iopscience.iop.org
Active galactic nuclei (AGNs) can be divided into two major classes, namely radio-loud and
radio-quiet AGNs. A small subset of the radio-loud AGNs is called blazars, which are …

Radio core-dominance of Fermi-blazars: implication for blazar unification

EU Iyida, FC Odo, AE Chukwude - Astrophysics and Space Science, 2021 - Springer
In this paper, we use the distributions of two-component radio emissions to investigate the
consequences of relativistic beaming on the unified scheme of blazar populations and radio …

Relativistic beaming effects in BL Lacertae objects: Evidence for RBL/XBL dichotomy

FC Odo, AE Chukwude, AA Ubachukwu - Astrophysics and Space Science, 2017 - Springer
In this paper, we review the predictions of the popular relativistic beaming model for the
unification of radio-and X-ray selected BL Lac (RBL and XBL) populations. Using results of …

On the unified view of gamma-ray energy distribution of BL Lac objects and flat spectrum radio quasars

FC Odo, BE Aroh - Journal of Astrophysics and Astronomy, 2020 - Springer
We study the distributions of γ γ-ray properties of a sample of γ γ-ray loud blazars taken from
the third catalogue of blazars detected by Fermi-Large Area Telescope (Fermi-LAT). We …

On Asymmetries in Powerful Radio Sources and the Quasar/Galaxy Unification

CI Onah, AA Ubachukwu, FC Odo - Journal of Astrophysics and …, 2014 - Springer
We utilize the distributions of fractional separation difference (x) as asymmetry parameter,
linear size (D) and core-to lobe luminosity ratio (R) as orientation indicators, to investigate a …

On the unified view of extragalactic sources based on their broadband emission properties

EU Iyida, IO Eya, FC Odo - Journal of Astrophysics and Astronomy, 2021 - Springer
Our understanding of the unification of jetted active galactic nuclei (AGNs) has advanced
greatly as the size of extragalactic sources increased. In this paper, based on the large …

Extended radio emission in core-dominated quasars: implications for relativistic beaming hypothesis

FC Odo, AA Ubachukwu, AE Chukwude - Astrophysics and Space Science, 2015 - Springer
This paper investigates a simple consequence of relativistic beaming and radio source
orientation scenario for high-luminosity extragalactic radio sources, based on the …

Investigating possible unification of Seyfert galaxies and blazars in Fermi‐Large Area Telescope sample

EU Iyida, IO Eya, FC Odo - Astronomische Nachrichten, 2021 - Wiley Online Library
Statistical analyses are invaluable methods used to understand intrinsic emission processes
and the unification of extragalactic radio sources. In this paper, we collected radio, X‐ray …

[HTML][HTML] Evolution of Radio Source Components and the Quasar/Galaxy Unification Scheme

CI Onah, AA Ubachukwu, FC Odo - Astronomy and Planetary …, 2022 - intechopen.com
In this work, a theoretical model is developed for explanation of temporal evolution of
extragalactic radio sources via beaming, orientation effects and asymmetries. Equation of …

Relativistic Beaming and Source Orientation Effects in Extragalactic Radio Sources

CI Onah, AA Ubachukwu, FC Odo, JN Aniezi - 2022 - researchsquare.com
In this paper we use the correlation between radio core-dominance (R) and Linear size (D)
properties of a sample of AGN (ESSs and FSRQs) to investigate the beaming hypothesis …