Buscar
Mostrando ítems 61-70 de 113
Incidence of the host galaxy on the measured optical linear polarization of blazars
(Oxford University Press, 2008-08)
We study the incidence of the underlying host galaxy light on the measured optical linear polarization of blazars. Our methodology consists of the implementation of simulated observations obtained under different atmospheric ...
MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-loud Blazars
(Institute of Physics Publishing, 2019)
© 2019. The American Astronomical Society. All rights reserved. We present results from a parsec-scale jet kinematics study of 409 bright radio-loud active galactic nuclei (AGNs) based on 15 GHz Very Long Baseline Array ...
Optical flux and spectral characterization of the blazar PG 1553 + 113 based on the past 15 years of data
(Indian Academy of Sciences, 2022-06)
We study flux and spectral variability of the high energy peaked TeV blazar PG 1553 + 113 on diverse timescales using the data collected from 2005 to 2019 which also includes the intensive intra-night monitoring of the ...
A two-component model for the high-energy variability of blazars: Application to PKS 2155-304
(EDP Sciences, 2012-08)
Aims. We study the production of very-high-energy emission in blazars as a superposition of a steady component from a baryonic jet and a time-dependent contribution from an inner e -e + beam launched by the black hole. ...
Optical flux behaviour of a sample of Fermi blazars
(EDP Sciences, 2016-06)
Aims. We aim at investigating the time-behaviour of a sample of gamma-ray blazars. We present the results from a 13 month-long optical photometry monitoring campaign of the blazars PKS 0048−097, PKS 0754+100, [HB89] 0827+243, ...
Herschel-ATLAS: Blazars in the science demonstration phase field
(Astronomy and Astrophysics, 2010)
ON THE NATURE OF HARD X-RAY EXTRAGALACTIC SOURCES OBSERVED WITH XMM-NEWTON
(The Astronomical Journal, 2012)
The gamma-ray blazar quest: new optical spectra, state of art and future perspectives
(Springer Netherlands, 2016-10)
We recently developed a procedure to recognize γ
-ray blazar candidates within the positional uncertainty regions of the unidentified/unassociated γ
-ray sources (UGSs). Such procedure was based on the discovery that ...
New observations with gemini and GTC of the VHE blazar KUV 00311–1938: About its redshift and environment
(IOP Publishing, 2021-01)
Extragalactic very-high-energy (VHE; E > 100 GeV) sources are unique objects to study the most powerful particle accelerators in nature, as active galactic nuclei are likely sources of ultra-high-energy cosmic rays. BL ...