0000000001307933

AUTHOR

M.f. Aller

showing 2 related works from this author

MOJAVE. XIII. New 15GHz observations on 1994-2013

2017

We present 1625 new 15GHz (2cm) VLBA images of 295 jets associated with active galactic nuclei (AGNs) from the MOJAVE and 2cm VLBA surveys, spanning observations between 1994 August 31 and 2013 August 20. For 274 AGNs with at least 5 VLBA epochs, we have analyzed the kinematics of 961 individual bright features in their parsec-scale jets. A total of 122 of these jets have not been previously analyzed by the MOJAVE program. In the case of 451 jet features that had at least 10 epochs, we also examined their kinematics for possible accelerations. At least half of the well-sampled features have non-radial and/or accelerating trajectories, indicating that non-ballistic motion is common in AGN je…

interstellar mediumgalactic and extragalactic astronomyAstrophysics and AstronomyActive galactic nucleihigh energy astrophysicsRadio sourcesAstrophysics::High Energy Astrophysical PhenomenaPhysicsAstrophysics::Cosmology and Extragalactic AstrophysicsRedshiftedstellar astronomyCosmologyobservational astronomyRadio continuum emissionBL Lacertae objectsProper motionsRadio astronomyNatural SciencesQuasarsAstrophysics::Galaxy Astrophysics
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1.5Jy MOJAVE AGN sample and 3FGL data

2016

We use the complete MOJAVE 1.5Jy 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 0.1GeV 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 0.1GeV threshold of the LAT, and are thus less likely to be detected by Fermi. The non-detected AGNs in the 1.5Jy sample also have significantly l…

interstellar mediumActive galactic nucleigalactic and extragalactic astronomyAstrophysics and AstronomyGamma-ray astronomyhigh energy astrophysicsAstrophysics::High Energy Astrophysical PhenomenaPhysicsAstrophysics::Instrumentation and Methods for AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsRedshiftedComputer Science::Digital LibrariesCosmologyobservational astronomyRadio continuum emissionGamma ray astronomyRadio astronomyNatural SciencesAstrophysics::Galaxy Astrophysics
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