Results 21 to 30 of about 622,966 (164)

Systematic properties of decelerating relativistic jets in low-luminosity radio galaxies [PDF]

open access: yes, 2013
We model the kiloparsec-scale synchrotron emission from jets in 10 Fanaroff-Riley Class I radio galaxies for which we have sensitive, high-resolution imaging and polarimetry from the Very Large Array. We assume that the jets are intrinsically symmetrical,
R. Laing, A. Eso, Nrao
semanticscholar   +1 more source

VLBA AND CHANDRA OBSERVATIONS OF JETS IN FRI RADIO GALAXIES: CONSTRAINTS ON JET EVOLUTION [PDF]

open access: yes, 2012
We present here the results from new Very Long Baseline Array (VLBA) observations at 1.6 and 5 GHz of 19 galaxies of a complete sample of 21 Uppasala General Catalog (UGC) Fanaroff–Riley type I (FRI) radio galaxies. New Chandra data of two sources, viz.,
P. Kharb   +10 more
semanticscholar   +1 more source

Electron–positron pairs in blazar jets and γ-ray loud radio galaxies [PDF]

open access: yes, 2012
The matter content of extragalactic relativistic jets is still an unsolved issue. There are strong arguments against pure electron–positron pair jets, but pairs could outnumber the electrons associated with protons by a factor of 10–20.
G. Ghisellini
semanticscholar   +1 more source

Evidence of powerful relativistic jets in narrow-line Seyfert 1 galaxies [PDF]

open access: yes, 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]

open access: yesMonthly 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

Kinematics of Parsec-scale Jets of Gamma-Ray Blazars at 43 GHz within the VLBA-BU-BLAZAR Program [PDF]

open access: yes, 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

POWERFUL RELATIVISTIC JETS IN SPIRAL GALAXIES [PDF]

open access: yes, 2011
The discovery of high-energy (E > 100 MeV) γ rays from Narrow-Line Seyfert 1 Galaxies (γ-NLS1s) has confirmed the presence of powerful relativistic jets in this class of active galactic nuclei (AGN).
L. Foschini
semanticscholar   +1 more source

Seyfert 2 galaxies in the GeV band: jets and starburst [PDF]

open access: yes, 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

Blandford–Znajek jets in galaxy formation simulations: method and implementation [PDF]

open access: yes, 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]

open access: yes, 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

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