Electron positron pair winds and the Eddington limit

Details Electron positron pair winds and the Eddington limit Electron positron pair winds and the Eddington limit

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..969l&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 2: AGN and the X Ray Background p 969-973 (SEE N90-258

Astronomy and Astrophysics

Astronomy

Eddington Approximation, Electron-Positron Pairs, Hydrodynamic Equations, Pair Production, Stellar Models, Accretion Disks, Active Galactic Nuclei, Background Radiation, Black Holes (Astronomy), Stellar Mass Accretion, Stellar Winds

Scientific paper

The dynamics of pair winds in the environment of the central engine of Active Galactic Nuclei (AGN) are investigated assuming super Eddington accretion onto black holes. If the accretion is assumed to be spherically symmetric with the accreting matter occurring in discrete cool blobs, and pairs are produced by a nonthermal mechanism, these pairs are blown out by radiation pressure if the coupling between the pairs and accreting blobs is not complete. The coupling also determines the escaping luminosity. If the maximal coupling constraint is relaxed, then a qualitative argument shows that the classical Eddington limit may be exceeded. When the pairs are considered to be noninteracting particles, the outflow is optically thin. Frame dependent effects are considered. Equations are derived considering pair production in the rest frame of the wind and also in the rest frame of the accreting cool blobs. The hydrodynamic equations are integrated numerically.

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