Multi-frequency study of spectral indices of BL Lacertae objects and flat-spectrum radio quasars

EU Iyida, FC Odo, AE Chukwude, AA Ubachukwu - New Astronomy, 2022 - Elsevier
We present statistical analyses of large homogenous data sample of Fermi-detected blazars
thoroughly studied in order to reassess the relationship between flat-spectrum radio quasars …

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 …

Spectral properties of Fermi blazars and their unification schemes

EU Iyida, FC Odo, AE Chukwude, AA Ubachukwu - Open Astronomy, 2020 - degruyter.com
We use the distributions of spectral indices (α v) of a large homogenous sample of Fermi-
detected blazars to re-investigate the relationship between flat spectrum radio quasars …

Luminosity–redshift (Lz) relation and the blazar sequence for low power blazars

FC Odo, AE Chukwude, AA Ubachukwu - Astrophysics and Space Science, 2014 - Springer
This paper presents an alternative interpretation for the wide scatter and apparent lack of
anti-correlation in the relationship between the spectral luminosity (L ν) and synchrotron …

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 …

Environmental effects on structural asymmetry in extragalactic radio sources and quasar/galaxy unification

CI Onah, AA Ubachukwu, FC Odo - The European Physical Journal …, 2021 - epjplus.epj.org
We use the anti-correlation between arm-length ratio (Q) and flux density ratio (F) as
asymmetry parameters to investigate the effects of environment on observed structural …

On the Unified Scheme of γ-Ray Emitting Jetted Active Galactic Nuclei

AI Audu, FC Odo, EU Iyida, O Okike, AA Ubachukwu - Astrophysics, 2023 - Springer
The discovery of γ-ray emitting Seyfert galaxies has opened a new unified scheme of active
galactic nuclei (AGN) in which jetted Seyfert galaxies are viewed as young counterparts of …

[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 …