Magnetized accretion disks and the radio outbursts of 3C 120 and Cygnus X-3

Details Magnetized accretion disks and the radio outbursts of 3C 120 and Cygnus X-3 Magnetized accretion disks and the radio outbursts of 3C 120 and Cygnus X-3

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apl....17...69s&link_type=abstract

Astrophysical Letters, vol. 17, no. 2, 1976, p. 69-76.

Astronomy and Astrophysics

Astronomy

39

Black Holes (Astronomy), Radio Sources (Astronomy), Seyfert Galaxies, X Ray Sources, Astronomical Models, Binary Stars, Energy Storage, Particle Acceleration, Particle Energy, Stellar Envelopes

Scientific paper

Models which involve accretion disks around black holes are investigated for the radio outbursts from the Seyfert galaxy 3C 120 and the X-ray source Cyg X-3. For 3C 120, two mechanisms for plasmoid creation are considered in which magnetic energy is stored in the disk over the characteristic time between bursts or the energy is simultaneously manufactured and released during an active phase. The parameters of a black hole and a disk in 3C 120 are estimated, and it is shown that the radio outbursts can be understood in terms of either mechanism. For Cyg X-3, it is argued that the radio energy can only be generated in real time in an accretion disk near the radius of X-ray emission. Some aspects of the individual particle energies are discussed on the assumption that the energy in both sources is produced in real time. It is concluded that efficient particle acceleration can be effected in the inner-region of the disks around both objects by way of magnetic-cell reconnection.

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