Electron–positron jets associated with the quasar 3C279

@article{Wardle1998ElectronpositronJA,
  title={Electron–positron jets associated with the quasar 3C279},
  author={J. F. C. Wardle and D. C. Homan and Roopesh Ojha and David H. Roberts},
  journal={Nature},
  year={1998},
  volume={395},
  pages={457-461}
}
A long-standing question in extragalactic astrophysics is the composition of the relativistic jets of plasma that stream from the nuclei of quasars and active galaxies—do they consist of a ‘normal’ (electron–proton) plasma, or a ‘pair’ (electron–positron) plasma? Distinguishing between these possibilities is crucial for understanding the physical processes occurring close to the putative supermassive black holes that are believed responsible for the jets. Here we report the detection of… 

Figures and Tables from this paper

Determining the composition of radio plasma via circular polarization: the prospects of the Cygnus A hot spots
The composition of the relativistic plasma produced in active galactic nuclei and ejected via powerful jets into the interstellar/intergalactic medium is still a major unsettled issue. It might be a
Baryons in the relativistic jets of the stellar-mass black-hole candidate 4U 1630-47
TLDR
It is argued that Doppler-shifted X-ray emission lines arise from baryonic matter in a jet travelling at approximately two-thirds the speed of light, thereby establishing the presence of baryons in the jet.
Search for electron-positron annihilation radiation from the jet in 3c 120
We report an attempt to detect the electron-positron annihilation line from the radio galaxy 3C 120, in which the jet interacts strongly with interstellar clouds. Such interactions should cause most
Towards laboratory produced relativistic electron–positron pair plasmas
Abstract We review recent experimental results on the path to producing electron–positron pair plasmas using lasers. Relativistic pair-plasmas and jets are believed to exist in many astrophysical
Large-scale jets in active galactic nuclei: multiwavelength mapping
ABSTRA C T X-ray emission from large-scale extragalactic jets is likely to be as a result of inverse Compton scattering of relativistic particles off seed photons of both the cosmic microwave
On the relative importance of hadronic emission processes along the jet axis of active galactic nuclei
With the coincident detection of a gamma-ray flare and a neutrino from the blazar TXS 0506+056, Active Galactic Nuclei (AGN) have been put into focus as possible sources of the diffuse neutrino flux.
The bulk kinetic power of radio jets in active galactic nuclei
Based on the Konigl's inhomogeneous jet model, we estimate the jet parameters, such as bulk Lorentz factor Gamma, viewing angle theta and electron number density n(e) from radio very long-baseline
Quasar jets and their fields
  • R. Blandford
  • Physics, Biology
    Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
  • 2000
TLDR
It is suggested that it is the mass of the black hole relative to that of the galaxy which determines the eventual galaxy morphology and it is argued that both the power source and the collimation are likely to be magnetic in origin.
Pair Plasma Dominance in the Parsec-Scale Relativistic Jet of 3C 345
We investigate whether a parsec-scale jet of 3C 345 is dominated by a normal plasma or an electron-positron plasma. We present a general condition that a jet component becomes optically thick for
Relativistic anisotropic pair plasmas
ABSTRA C T The properties of waves able to propagate in a relativistic pair plasma are at the basis of the interpretation of several astrophysical observations. For instance, they are invoked in
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 45 REFERENCES
Theory of extragalactic radio sources
Powerful extragalactic radio sources comprise two extended regions containing magnetic field and synchrotron-emitting relativistic electrons, each linked by a jet to a central compact radio source
The kinetic power and luminosity of parsec-scale radio jets – an argument for heavy jets
We present arguments indicating that radio jets are heavy (i.e. mainly composed of an electron-proton plasma), and that the non-thermal emitting particle distribution has a low-energy cut-off at
The matter content of the jet in M87: evidence for an electron-positron jet
Recent observations have allowed the geometry and kinematics of the M87 jet to be tightly constrained. We combine these constraints with historical Very Long Baseline Interferometry (VLBI) results
The matter content of the jet in M87: evidence for an electron—positronjet
Recent observations have allowed the geometry and kinematics of the M87 jet to be tightly constrained. We combine these constraints with historical Very Long Baseline Interferometry (VLBI) results
Theory of electron-positron showers in double radio sources
A black hole of mass approx.3 x 10/sup 8/ M/sub sun/ is assumed to be present in the nucleus of an active galaxy or quasar. With an axial magnetic field approx.10/sup 3/ gauss, a potential drop
Relativistic bulk motion in active galactic nuclei
We discuss the evidence for relativistic bulk motion of the emitting plasma in the nuclei of ∼100 radio sources, which include BL Lacertae objects, radio quasars, and radio galaxies, with published
Comptonization of Diffuse Ambient Radiation by a Relativistic Jet: The Source of Gamma Rays from Blazars?
Recent Energy Gamma Ray Experiment Telescope (EGRET) observations of blazars have revealed strong, variable gamma-ray fluxes with no signatures of gamma-ray absorption by pair production. This
Polarization as a probe of magnetic field and plasma properties of compact radio sources: simulation of relativistic jets
The relationship between polarized emission, both linear and circular, and the magnetic field and plasma properties is explored using a large set of numerical simulations. The results show that
Pair cascades in extragalactic jets. 1: Gamma rays
A model of the approximately 0.1-10 GeV gamma-ray jets observed by the EGRET instrument on the Compton Gamma Ray Observatory (CGRO) is developed. It is shown that the soft X-ray background in an
Relativistic jets as X-ray and gamma-ray sources.
The radio-through-..gamma..-ray emission from beamed relativistic jets associated with bright, compact radio sources is considered and applied to the interpretation of extragalactic X-ray and
...
1
2
3
4
5
...