A novel mechanism of the formation of electron-positron outflow from hot accretion disks

Details A novel mechanism of the formation of electron-positron outflow from hot accretion disks A novel mechanism of the formation of electron-positron outflow from hot accretion disks

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..430y&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 430-434 (2000).

Astronomy and Astrophysics

Astrophysics

Active And Peculiar Galaxies And Related Systems, Black Holes, Fundamental Aspects Of Astrophysics, Characteristics And Properties Of External Galaxies And Extragalactic Objects

Scientific paper

We propose a mechanism of the relativistic jet formation in active galactic nuclei and galactic black hole binaries. We consider the ejection of electron-positron pairs produced in the two-temperature accretion disks, by solving the pair momentum equation in the one-zone approximation, in which we assume that the electron-positron component can escape independently of the electron-proton one which forms a hydrostatic atmosphere. The results show that, in the inner region of the disks, when the mass accretion rate becomes larger than about a tenth of the Eddington rate, most of the viscously dissipated energy is converted into the thermal and kinetic energy of the ejected electron-positron pairs. The produced pairs are accelerated in the vertical direction by its own gas pressure rather than by the radiative force. Thus, this mechanism is successful in extracting accretion power to form powerful electron-positron jets as suggested by recent observations. .

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