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 …

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 …

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 …

On the evolution of Seyfert galaxies, BL Lacertae objects and flat-spectrum radio quasars

EU Iyida, CI Eze, FC Odo - Astrophysics and Space Science, 2022 - Springer
The concept of evolutionary sequence of jetted active galactic nuclei (AGNs) has been
challenged in the last few decades since AGN subclasses are considered to be different due …

Testing the Consistency of Unified Scheme of Seyfert Galaxies

EU Iyida, IO Eya, CI Eze - Journal of Astronomy and Space …, 2022 - koreascience.kr
The unified scheme of Seyfert galaxies hypothesizes that the observed differences between
the two categories of Seyfert galaxies, type 1 (Sy1) and type 2 (Sy2) are merely due to the …

Orientation and Beaming Effects in active galactic nuclei: Implication for radio galaxy-Blazar Evolution

EU Iyida, C Onah, I Eya, F Odo - 2023 - researchsquare.com
The orientation and evolution based on unified scheme for jetted extragalactic radio sources
posits that BL Lacertae objects (BLs), flat-spectrum radio quasars (FSRQs) and normal radio …

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 …

[PDF][PDF] Seyfert Galaxies in the Revised Unification Scheme of Extragalactic Radio Sources

AI Audu, FC Odo, AA Ubachukwu - Publication of the …, 2021 - astrosocietyng.org
The discovery of γ-ray emitting Seyfert galaxies has opened a new unified scheme of
extragalactic radio sources in which Seyfert galaxies are viewed as young jetted …