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 …

On the Extended Blazar Sequence for γ-Ray Emitting Active Galactic Nuclei

AI Audu, FC Odo, AA Ubachukwu - Astrophysics, 2025 - Springer
In this paper, we use the distributions of observed-ray properties, as well as orientation
parameters of a sample of Fermi-LAT AGNs to investigate the hypothesis that-NLS1 objects …

[PDF][PDF] 射电类星体B3 1637+ 436A 双峰轮廓宽发射线的光变研究

钟郅皓, 刘博, 郝蕾, 孙鹿鸣, 周宏岩 - 天文学报, 2022 - pmo.cas.cn
摘要通过对比间隔17 yr (静止系12.5 yr) 的Sloan Digital Sky Survey (SDSS), Keck LRIS (Low-
Resolution Imaging Spectrograph) 和Baryon Oscillation Spectroscopic Survey (BOSS) …

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 …

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] On the Unification of Low Luminosity Active Galactic Nuclei

GF Abbey, FC Odo, RNC Eze, GG Nyambuya… - researchgate.net
We have used the distributions of observed radio properties of a subset of AGNs called low
luminosity AGNs (LLAGNs) to investigate the relationship between radio-selected BL Lacs …