0000000000756953

AUTHOR

M. L. Lister

showing 5 related works from this author

Catching the radio flare in CTA 102. II. VLBI kinematic analysis

2013

Astronomy & Astrophysics, 551, id.A32 (2013)
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Multifrequency Studies of the Peculiar Quasar 4C +21.35 during the 2010 Flaring Activity

2014

著者人数: 290名

AstrofísicaelectronPhotontorusAstrophysics01 natural scienceslaw.inventiongalaxies: active – gamma rays: general – quasars: general – quasars: individual (4C +21.35) – radiation mechanisms: non-thermalactive gamma rays: general quasars: general quasars: individual: 4C +21.35 radiation mechanisms: non-thermal [galaxies]lawblack hole: Kerrgalaxies: active; gamma rays: general; quasars: general; quasars: individual: 4C +21.35; radiation mechanisms: non-thermalopticalGalaxies: active; Gamma rays: general; Quasars: general; Quasars: individual (4C +21.35); Radiation mechanisms: non-thermal010303 astronomy & astrophysicsastro-ph.HEHigh Energy Astrophysical Phenomena (astro-ph.HE)Physicsenergy: highPhysicsphotonRadiusnon-thermal [radiation mechanisms]Synchrotrongamma ray: emissionactive [galaxies]astro-ph.COElectrónicaFísica nuclearElectricidadGalaxies: active; Gamma rays: general; Quasars: general; Quasars: individual (4C +21.35); Radiation mechanisms: non-thermal; Nuclear and High Energy PhysicsAstrophysics - High Energy Astrophysical Phenomenaquasars: individual (4C +21.35)Astrophysics - Cosmology and Nongalactic AstrophysicsFlareradiation mechanisms: non-thermal; galaxies: active; quasars: general; quasars: individual (4C +21.35); gamma rays: observationsNuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)astro-ph.GAAstrophysics::High Energy Astrophysical Phenomenaeducationgalaxies: activeFOS: Physical sciencesquasars: individual: 4C +21.35Astrophysics::Cosmology and Extragalactic AstrophysicsVHEGLASTemission: modelTelescopeX-rayquasars: general0103 physical sciencessynchrotrongalaxies: active gamma rays: general quasars: general quasars: individual: 4C +21.35 radiation mechanisms: non-thermalquasarflux: densityindividual: 4C +21.35 [quasars]Astrophysics::Galaxy AstrophysicsAstronomia Observacionsgeneral [quasars]010308 nuclear & particles physicsAstronomy and AstrophysicsQuasargamma rays: generalradiation mechanisms: non-thermalAstrophysics - Astrophysics of GalaxiesMAGICRotating black holeSpace and Planetary SciencegravitationAstrophysics of Galaxies (astro-ph.GA)ddc:520spectral[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]general [gamma rays]Fermi Gamma-ray Space Telescope
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Why Have Many of the Brightest Radio-loud Blazars Not Been Detected in Gamma-Rays by Fermi?

2015

We use the complete MOJAVE 1.5 Jy sample of active galactic nuclei (AGNs) to examine the gamma-ray detection statistics of the brightest radio-loud blazars in the northern sky. We find that 23% of these AGNs were not detected above 0.1 GeV by the Fermi-LAT during the four-year 3FGL catalog period partly because of an instrumental selection effect and partly due to their lower Doppler boosting factors. Blazars with synchrotron peaks in their spectral energy distributions located below 10^(13.4) Hz also tend to have high-energy peaks that lie below the 0.1 GeV threshold of the LAT, and are thus less likely to be detected by Fermi. The non-detected AGNs in the 1.5 Jy sample also have significa…

AstrofísicaActive galactic nucleusmedia_common.quotation_subjectAstrophysics::High Energy Astrophysical Phenomenajets [galaxies]AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysicsgeneral [gamma-ray burst]7. Clean energy01 natural scienceslaw.inventionsymbols.namesakelaw0103 physical sciencesBlazar010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysicsmedia_commonPhysicsgeneral [quasars]010308 nuclear & particles physicsScatteringSpectral densityAstronomy and Astrophysicsgalaxies [radio continuum]Synchrotron13. Climate actionSpace and Planetary ScienceSkyactive [galaxies]AstronomiasymbolsDoppler effectFermi Gamma-ray Space Telescope
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Catching the radio flare in CTA 102

2013

We performed multifrequency multiepoch Very Long Baseline Array (VLBA) observations of the blazar CTA 102 during its 2006 radio flare, the strongest ever reported for this source. These observations provide an excellent opportunity to investigate the evolution of the physical properties of blazars, especially during these flaring events. We want to study the kinematic changes in the source during the strong radio outburst in April 2006 and test the assumption of a shock-shock interaction. This assumption is based on the analysis and modeling of the single-dish observations of CTA\,102 (Paper I). In this paper we study the kinematics of CTA 102 at several frequencies using VLBI observations.…

AstrofísicaCosmology and Nongalactic Astrophysics (astro-ph.CO)Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsKinematicsAstrophysics01 natural scienceslaw.inventionlaw0103 physical sciencesVery-long-baseline interferometryBlazar010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsVery Long Baseline ArrayHigh Energy Astrophysical Phenomena (astro-ph.HE)Physics010308 nuclear & particles physicsAstronomy and AstrophysicsViewing angleLight curveCTA-102Space and Planetary ScienceAstronomiaAstrophysics - High Energy Astrophysical PhenomenaAstrophysics - Cosmology and Nongalactic AstrophysicsFlareAstronomy & Astrophysics
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A closer look at the flaring feature in the M87 jet

2009

The radio-loud active galactic nucleus in M 87 hosts a powerful jet fueled by a super-massive black hole in its center. A bright feature 80 pc away from the M 87 core has been reported to show superluminal motions, and possibly to be connected with a TeV flare observed around 2005. To complement these studies and to understand the nature of this feature, we analyzed 2 cm VLBI data from 15 observing runs between 2000 and 2009. This feature is successfully detected at the milli-Jansky level from 2003 to 2007. Our detections show that its milli-arcsecond structure appears to be extended with a steep spectrum, and no compact or rapidly moving features are observed. Our results do not favor a bl…

Cosmology and Nongalactic Astrophysics (astro-ph.CO)FOS: Physical sciencesAstrophysics - Cosmology and Nongalactic Astrophysics
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