INTEGRAL view of AGN

A Malizia, S Sazonov, L Bassani, E Pian… - New Astronomy …, 2020 - Elsevier
AGN are among the most energetic phenomena in the Universe and in the last two decades
INTEGRAL's contribution in their study has had a significant impact. Thanks to the …

Hadronuclear interactions in the jet of low TeV luminosity AGN: Implications for the low-state very-high-energy gamma-ray emission

R Xue, ZR Wang, WJ Li - Physical Review D, 2022 - APS
In the study of radiation mechanisms of active galactic nuclei (AGN) jets, hadronuclear (pp)
interactions are commonly neglected, because the number density of cold protons in the jet …

On the Schwarzschild model for gravitating objects of the universe

D Doikov, V Kiosak - AIP Conference Proceedings, 2020 - pubs.aip.org
The paper treats Schwarzschild spaces as a model for gravity features. We study a wrapped
product of metrics of Schwarzschild spaces. The paper demonstrates that there are two …

The Classification of Blazar Candidates of Uncertain Types

JH Fan, KY Chen, HB Xiao, WX Yang, JC Liang… - Universe, 2022 - mdpi.com
In this work, the support vector machine (SVM) method is adopted to separate BL Lacertae
objects (BL Lacs) and flat spectrum radio quasars (FSRQs) in the plots of the photon …

Estimation of inverse Compton peak frequency for 4FGL Blazars

JH Yang, JH Fan, Y Liu, MX Tuo, ZY Pei… - Science China Physics …, 2023 - Springer
This study uses a parabolic equation to fit the Inverse Compton (IC) spectral component of
3743 blazars (794 FSRQs, 1432 BL Lacs, and 1517 BCUs) from the 4FGL-DR3 catalog …

Revisiting the proton synchrotron radiation in blazar jets: Possible contributions from x-ray to -ray bands

R Xue, ST Huang, HB Xiao, ZR Wang - Physical Review D, 2023 - APS
The proton synchrotron radiation is considered as the origin of high-energy emission of
blazars at times. However, extreme physical parameters are often required. In this work, we …

Multi-Messenger Emission Characteristics of Blazars

R Gamble Jr, J Forman, A Barnes… - arXiv preprint arXiv …, 2024 - arxiv.org
Multi-Messenger observations and theory of astrophysical objects is fast becoming a critical
research area in the astrophysics scientific community. In particular, point-like objects like …

The fundamental plane of FSRQs based on the black hole spin-mass energy

X Zhang, QG Gao - Astrophysics and Space Science, 2023 - Springer
Previous studies have identified the Fundamental Plane (FP) of Active Galactic Nuclei
(AGNs) in recent years. However, these findings relied on total black hole mass, also known …

Comparison between Fermi detected and non-Fermi detected superluminal sources

HB Xiao, JH Fan, JH Yang, Y Liu, YH Yuan… - Science China Physics …, 2019 - Springer
Active galactic nuclei (AGNs) have been attracting research attention due to their special
observable properties. Specifically, a majority of AGNs are detected by Fermi-LAT missions …

Unification of BL Lac objects and FR I and FR II (G) radio galaxies, and Doppler factor estimation for BL Lac objects

XH Ye, JH Fan - Publications of the Astronomical Society of …, 2021 - academic.oup.com
In this work, we collected a sample of BL Lacs and FR I and FR II (G) radio galaxies with
available core and extended emissions from published works to discuss the unified …