Results 41 to 50 of about 625,578 (206)
Evidence of powerful relativistic jets in narrow-line Seyfert 1 galaxies [PDF]
, 2011 In 2008, the Fermi Gamma-ray Space Telescope has revealed - for the first time - high-energy (E > 100 MeV) gamma rays from a few Narrow-Line Seyfert 1 Galaxies (NLS1s).
L. Foschini
semanticscholar +1 more source
Prevalence of radio jets associated with galactic outflows and feedback from quasars [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present 1–7 GHz high-resolution radio imaging (VLA and e-MERLIN) and spatially resolved ionized gas kinematics for 10 z < 0.2 type 2 ‘obscured’ quasars (log [LAGN/erg s−1] ≳ 45) with moderate radio luminosities ($\log [L_{\rm {1.4\,GHz}}$/W Hz−1] =
M. Jarvis +12 more
semanticscholar +1 more source
CCD observations of galaxies with radio jets [PDF]
Symposium - International Astronomical Union, 1986 We present preliminary results of a CCD survey of nearby (z<0.1) northern galaxies which have well defined radio jets. Our main objectives are to: 1) detect - or put constraints to - the presence of optical jets in these galaxies, 2) obtain high dynamic range maps of known optical jets, and 3) make a detailed comparison of our results with those ...
L. Colina +3 more
openaire +2 more sources
Kinematics of Parsec-scale Jets of Gamma-Ray Blazars at 43 GHz within the VLBA-BU-BLAZAR Program [PDF]
, 2017 We analyze the parsec-scale jet kinematics from 2007 June to 2013 January of a sample of γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43 GHz.
S. Jorstad +12 more
semanticscholar +1 more source
Direct Measurement of the Jet Geometry in Seyfert Galaxies [PDF]
The Astrophysical Journal, 1999 11 pages, 1 figure, accepted for publication in The Astrophysical Journal ...
J. S. Ulvestad +7 more
openaire +4 more sources
Seyfert 2 galaxies in the GeV band: jets and starburst [PDF]
, 2010 The Fermi/LAT collaboration recently reported the detection of starburt galaxies in the high energy gamma-ray domain, as well as radio-loud narrow-line Seyfert 1 objects.
J. Lenain +4 more
semanticscholar +1 more source
Dissipative Processes and Their Role in the Evolution of Radio Galaxies [PDF]
Galaxies, 2019 Particle acceleration in relativistic jets, to very high levels of energy, occurs at the expense of the dissipation of magnetic or kinetic energy. Therefore, understanding the processes that can trigger this dissipation is key to the characterization of ...
M. Perucho
semanticscholar +1 more source
Blandford–Znajek jets in galaxy formation simulations: method and implementation [PDF]
, 2020 Jets launched by active galactic nuclei (AGN) are believed to play a significant role in shaping the properties of galaxies and provide an energetically viable mechanism through which galaxies can become quenched.
Rosie Y Talbot, M. Bourne, D. Sijacki
semanticscholar +1 more source
MOJAVE - XIV. Shapes and opening angles of AGN jets [PDF]
, 2017 We present 15 GHz stacked VLBA images of 373 jets associated with active galactic nuclei (AGN) having at least five observing epochs within a 20 yr time interval 1994-2015 from the MOJAVE programme and/or its precursor, the 2 cm VLBA Survey.
A. Pushkarev +5 more
semanticscholar +1 more source
Superdiscs in radio galaxies: jet–wind interactions [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Taking a clue from their sharp-edged (strip-like) morphology observed in several cases, a new mechanism is proposed for the formation of the emission gaps seen between the radio lobes of many powerful extragalactic double radio sources. Canonical understanding of the radio gaps invokes either blocking of the back-flowing lobe plasma by the denser ...
Paul J. Wiita +2 more
openaire +3 more sources