Results 121 to 130 of about 6,255 (211)
Cluster analysis of the Roma-BZCAT blazars [PDF]
Based on the collected multiwavelength data, namely in the radio (NVSS, FIRST, RATAN-600), IR (WISE), optical (Pan-STARRS), UV (GALEX), and X-ray (ROSAT, Swift-XRT) ranges, we have performed a cluster analysis for the blazars of the Roma-BZCAT catalog ...
Mikhailov, A. G. +7 more
core +1 more source
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
RevMexAA (Serie de Conferencias), 10, 83--86 (2001)
, 2007 We have carried out a survey to search for hidden blazars in a sample of z#2 radio--loud quasars. The idea is based on our prediction that we should be able to see large C IV line variability not associated with observed continuum variations or most ...
Feng Ma, Hidden Blazars And
core
, 2003 This review paper discusses the past and present observations of gamma-ray blazars with both space and ground-based gamma-ray telescopes (such as EGRET and current TeV telescopes), and with the VLBA. I also discuss the more sensitive gamma-ray telescopes such as AGILE and GLAST that will become available over the next several years, and how ...
openaire +2 more sources
Spin Tetrad Formalism of Circular Polarization States in Relativistic Jets
UniverseRelativistic jets from active galactic nuclei (AGN) have been a topic of peak interest in the high-energy astrophysics community for their uniquely dynamic nature and incredible radiative power emanating from supermassive black holes and similarly ...
Ronald Gamble
doaj +1 more source
Universal Stochastic Process in Blazar Gamma-Ray Variability Revealed by Bayesian Kernel Comparison
The Astrophysical JournalAlthough Gaussian processes have been widely applied in modeling the high-energy light curves of blazars, a systematic comparison of the performances of different kernel functions within Gaussian processes has remained lacking.
Jiachao Liu +6 more
doaj +1 more source
Evolving parsec-scale radio structure in the most distant blazar known. [PDF]
Nat Commun, 2020 An T +9 more
europepmc +1 more source
Neutrino Detection Rates from Lepto-hadronic Model Simulations of Bright Blazar Flares
The Astrophysical JournalThere is mounting evidence that blazars are the sources of part of the very-high-energy astrophysical neutrino flux detected by IceCube. In particular, there have been several spatial and temporal coincidences of individual IceCube neutrino events with ...
Joshua Robinson, Markus Böttcher
doaj +1 more source
Synergies of THESEUS with the large facilities of the 2030s and guest observer opportunities. [PDF]
Exp Astron (Dordr), 2021 Rosati P +39 more
europepmc +1 more source
TeV blazars and their distance
, 2010 Recently, a new method to constrain the distance of blazars with unknown redshift using combined observations in the GeV and TeV regimes has been developed, with the underlying assumption that the Very High Energy (VHE) spectrum corrected for the ...
Maraschi, Laura +4 more
core +1 more source