Results 21 to 30 of about 384,338 (204)
The Astrophysical Journal, 2023 Pairs of galaxies hosting active galactic nuclei (AGNs) are powerful probes of merger-driven supermassive black hole (SMBH) growth as they can resolve individual AGNs and trace mergers over a large range of physical separations.
R. Scott Barrows +3 more
doaj +1 more source
Linear Stability Analysis of Relativistic Magnetized Jets: Methodology
Universe, 2023 The stability of astrophysical jets in the linear regime is investigated by presenting a methodology to find the growth rates of the various instabilities.
Nektarios Vlahakis
doaj +1 more source
Simulating the dynamics and non-thermal emission of relativistic magnetised jets I. Dynamics [PDF]
, 2020 We have performed magneto-hydrodynamic simulations of relativistic jets from supermassive blackholes over a few tens of kpc for a range of jet parameters. One of the primary aims were to investigate the effect of different MHD instabilities on the jet dynamics and their dependence on the choice of jet parameters.
arxiv +1 more source
Toward Microarcsecond Astrometry for the Innermost Wobbling Jet of the BL Lacertae Object OJ 287
The Astrophysical Journal Letters, 2023 The BL Lacertae object OJ 287 is a very unusual quasar producing a wobbling radio jet and some double-peaked optical outbursts with a possible period of about 12 yr for more than one century.
Xiaopeng Cheng +5 more
doaj +1 more source
Impacts of Strongly Magnetized Degenerate Plasma on the Electron-capture Rates [PDF]
EPJ Web of Conferences, 2022 The strongly magnetized degenerate astrophysical plasma is investigated.Arelativistic Hartree self-consistent field method is applied to calculate the screening potential.
Luo Yudong +2 more
doaj +1 more source
GRMHD Simulations and Modeling for Jet Formation and Acceleration Region in AGNs
Universe, 2022 Relativistic jets are collimated plasma outflows with relativistic speeds. Astrophysical objects involving relativistic jets are a system comprising a compact object such as a black hole, surrounded by rotating accretion flows, with the relativistic jets
Yosuke Mizuno
doaj +1 more source
The Role of Macroscopic and Microscopic Jet Instabilities
EPJ Web of Conferences, 2013 Relativistic jets, be they Poynting flux or kinetic flux dominated, are current driven (CD) and/or Kelvin-Helmholtz (KH) velocity shear driven unstable. These macroscopic MHD instabilities may be responsible for some of the observed larger scale twisted ...
Hardee Philip E.
doaj +1 more source
Inherent and Local Magnetic Field Structures in Jets from Active Galactic Nuclei
Galaxies, 2021 In theoretical models for the electromagnetic launching of astrophysical jets, a helical magnetic (B)-field component is generated through the winding up of an initial longitudinal field component by the rotation of the cental black hole and accretion ...
Denise C. Gabuzda
doaj +1 more source
Observational Properties of Jets in Active Galactic Nuclei [PDF]
Astrophys.Space Sci. 293 (2004) 1-13, 2004 Parsec scale jet properties are shortly presented and discussed. Observational data are used to derive constraints on the jet velocity and orientation, the presence of velocity structures, and the connection between the pc and kpc scale. Two peculiar sources with limb-brightened jets: 1144+35 and Mkn 501 are discussed in detail.
arxiv +1 more source
Relativistic AGN jets I. The delicate interplay between jet structure, cocoon morphology and jet-head propagation [PDF]
, 2013 Current observations have shown that astrophysical jets reveal strong signs of radial structure. They suggest that the inner region of the jet, the jet spine, consists of a low-density, fast-moving gas, while the outer region of the jet consists of a more dense and slower moving gas, called the jet sheath.
arxiv +1 more source