Magnetic fields in astrophysics /Helen B. Warner Prize Lecture/

Details Magnetic fields in astrophysics /Helen B. Warner Prize Lecture/ Magnetic fields in astrophysics /Helen B. Warner Prize Lecture/

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..245b&link_type=abstract

(American Astronomical Society, Meeting, 160th, Troy, NY, June 8, 1982.) Astronomical Journal, vol. 88, Mar. 1983, p. 245-252. R

Astronomy and Astrophysics

Astrophysics

19

Astrophysics, Magnetic Fields, Black Holes (Astronomy), Neutron Stars, Particle Acceleration, Radio Sources (Astronomy), Stellar Magnetic Fields, Stress Tensors

Scientific paper

Magnetic fields play many important roles in interpretative models of astronomical phenomena. They can provide diagnostics of the physical conditions within active objects. They may mediate and collimate the energy release from a deep gravitational potential well. On a microscopic level, they may control the transport properties of astrophysical plasmas with large-scale thermal and dynamical consequences. Some of these facets of the behavior of magnetic fields are illustrated with examples drawn mainly from contemporary high-energy astrophysics. In particular, attention is given to the case that most double radio sources are powered by the electromagnetic or hydromagnetic extraction of energy from a spinning massive black hole and accretion disk and subsequently collimated by the pinching action of toroidal field wrapped around the jet. The origin of neutron star magnetic field is also discussed and it is argued that the magnetization can be generated thermoelectrically by the heat flux escaping from the interior of the star.

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