0000000000697378

AUTHOR

Gino Tosti

showing 3 related works from this author

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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Multiband Photometry of the Blazar PKS 0537-441: A Major Active State in December 2004 - March 2005

2005

Multiband VRIJHK photometry of the Blazar PKS 0537-441 obtained with the REM telescope from December 2004 to March 2005 is presented. A major period of activity is found with more than four magnitudes variability in the V filter in 50 days and of 2.5 in 10 days. In intensity and duration the activity is similar to that of 1972 reported by Eggen (1973), but it is much better documented. No clear evidence of variability on time-scale of minutes is found. The spectral energy distribution is roughly described by a power-law, with the weaker state being the softer.

Physicsgalaxies: active; galaxies: BL Lacertae objects: PKS 0537-441galaxies: activeAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAAstrophysicslaw.inventionTelescopePhotometry (astronomy)galaxies: BL Lacertae objects: PKS 0537-441Space and Planetary Sciencelawgalaxies: active ; galaxies: BL Lacertae objects: PKS 0537-441active [galaxies]Spectral energy distributionActive stateBlazarBL Lacertae objects: PKS 0537-441 [galaxies]:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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TANAMI: tracking active galactic nuclei with austral milliarcsecond interferometry

2010

We introduce the TANAMI program (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) which is monitoring an initial sample of 43 extragalactic jets located south of -30 degrees declination at 8.4 GHz and 22 GHz since 2007. All aspects of the program are discussed. First epoch results at 8.4 GHz are presented along with physical parameters derived therefrom. We present first epoch images for 43 sources, some observed for the first time at milliarcsecond resolution. Parameters of these images as well as physical parameters derived from them are also presented and discussed. These and subsequent images from the TANAMI survey are available at http://pulsar.sternwarte.uni…

High Energy Astrophysical Phenomena (astro-ph.HE)PhysicsBrightnessCosmology and Nongalactic Astrophysics (astro-ph.CO)Active galactic nucleusEpoch (astronomy)FOS: Physical sciencesAstronomy and AstrophysicsQuasarAstrophysicsDeclinationGalaxyRedshiftInterferometrySpace and Planetary ScienceAstrophysics - High Energy Astrophysical PhenomenaAstrophysics - Cosmology and Nongalactic AstrophysicsAstronomy and Astrophysics
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