Results 111 to 120 of about 34,122 (236)

Recognizing Blazars Using Radio Morphology from the VLA Sky Survey

The Astrophysical Journal
Blazars are radio-loud active galactic nuclei whose jets have a very small angle to our line of sight. Observationally, the radio emissions are mostly compact or compact-core with a one-sided jet.
Zhang-Liang Xie, Eduardo Bañados, Silvia Belladitta, Chiara Mazzucchelli, Jan-Torge Schindler, Frederick Davies, Bram P. Venemans   +6 more
doaj   +1 more source

Detection of Periodic Radio Signal from the Blazar J1043+2408

Galaxies, 2018
The search for periodic signals from blazars has become a widely discussed topic in recent years. In the scenario that such periodic changes originate from the innermost regions of blazars, the signals bear imprints of the processes occurring near the ...
Gopal Bhatta
doaj   +1 more source

Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales

Journal of Advanced Research in Natural and Applied Sciences
This study presents the results of multi-band observations from 2022 to 2024 and Zwicky Transient Facility (ZTF) observations from 2018 to 2023, examining the flux variability of the blazar 1ES 2344+514 on diverse time-scales in the optical bands.
Aykut Özdönmez
doaj   +1 more source

Temporal and Spectral Variabilities of High‐Energy Emission from Blazars Using Synchrotron Self‐Compton Models [PDF]

, 2000
Hui Li, Masaaki KUSUNOSE, Hui Li, Masaaki KUSUNOSE   +3 more
openalex   +1 more source

Resolving the blazar CGRaBS J0809+5341 in the presence of telescope systematics [PDF]

, 2016
Iniyan Natarajan, Z. Paragi, Jonathan Zwart, Simon Perkins, O. Smirnov, K. van der Heyden   +5 more
openalex   +1 more source

Cosmic Clues from Amaterasu: Blazar-driven Ultrahigh-energy Cosmic Rays?

The Astrophysical Journal Letters
The detection of the Amaterasu event of energy 244 EeV by the Telescope Array, one of the most energetic ultrahigh-energy cosmic rays (UHECRs; E  ≳ 0.1 EeV) observed to date, invites scrutiny of its potential source.
Saikat Das, Srijita Hazra, Nayantara Gupta   +2 more
doaj   +1 more source

Markarian Multiwavelength Data Center (MMDC): A Tool for Retrieving and Modeling Multitemporal, Multiwavelength, and Multimessenger Data from Blazar Observations

The Astronomical Journal
The Markarian Multiwavelength Data Center ( MMDC ) is a web-based tool designed for accessing and retrieving multiwavelength and multimessenger data from blazar observations.
N. Sahakyan, V. Vardanyan, P. Giommi, D. Bégué, D. Israyelyan, G. Harutyunyan, M. Manvelyan, M. Khachatryan, H. Dereli-Bégué, S. Gasparyan   +9 more
doaj   +1 more source

First Results on Long-Term Multiwavelength Variability Analysis in Mrk 421

EPJ Web of Conferences, 2013
Due to the broad-band nature of the emission from blazars, strong efforts are being placed in recent years on simultaneous multiwavelength campaigns as a way to understand the mechanisms responsible for the acceleration of ultra-relativistic particles in
Racero Elena, de la Calle Ignacio
doaj   +1 more source

Comprehensive study of the blazars from Fermi-LAT LCR: The log-normal flux distribution and linear RMS-Flux relation [PDF]

, 2023
Na Wang, Ting-Feng Yi, Liang Wang, Lisheng Mao, Zhi-Yuan Pu, Gong-Ming Ning, Wei-Tian Huang, Lu He, Shun Zhang, Yutong Chen, Dong Liang   +10 more
openalex   +1 more source

Extreme blazars

Astroparticle Physics, 1999
TeV emission can be a common characteristic of low power blazars. This is in line with the sequence of blazars relating the observed bolometric luminosity with their overall spectral energy distribution. Detecting new TeV blazars, possibly at different redshifts, is important for studying the particle acceleration process operating in the jet, and it ...
openaire   +3 more sources