Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....47...97d&link_type=abstract
Astronomy and Astrophysics, vol. 47, no. 1, Feb. 1976, p. 97-104.
Astronomy and Astrophysics
Astrophysics
9
Crab Nebula, Magnetohydrodynamic Stability, Plasma-Electromagnetic Interaction, Pulsars, Supernova Remnants, Astronomical Models, Electrostatic Waves, Plasma Turbulence, Plasma Waves, Pulsar Magnetospheres, Relativistic Plasmas
Scientific paper
A study is presented of collective plasma processes by which pulsars can energetically support young supernova remnants. It is shown that many of the observed features of the Crab Nebula can be adequately interpreted in terms of a parametric interaction between the low-frequency electromagnetic wave emitted by the pulsar in the oblique-rotator model and a relativistic wind of charged particles leaking from the pulsar's inner magnetosphere. In particular, it is shown that there is a relativistic parametric resonant coupling of the strong wave with electrostatic and electromagnetic modes, which would be responsible for the formation of wisps; in addition, the electromagnetic transverse modes would favor a relevant high-frequency radiation emission by the superthermal electrons of the wind. Other aspects of the activity of the central region of the nebula are also discussed in connection with generation of turbulent plasma modes.
Dobrowolny Marino
Ferrari Aldo
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