Magnetic two-photon scattering and two-photon emission - Cross sections and redistribution functions

Details Magnetic two-photon scattering and two-photon emission - Cross sections and redistribution functions Magnetic two-photon scattering and two-photon emission - Cross sections and redistribution functions

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...372..554a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 372, May 10, 1991, p. 554-564.

Statistics

Computation

16

Accretion Disks, Computational Astrophysics, Gamma Ray Bursts, Magnetic Stars, Quantum Electrodynamics, Scattering Cross Sections, X Ray Binaries, Compton Effect, Distribution Functions, Emission Spectra, Photons, Pulsars, Radiative Transfer

Scientific paper

The magnetic two-photon scattering cross section is discussed within the framework of QED, and the corresponding scattering redistribution function for this process and its inverse, as well as the scattering source function are calculated explicitly. In a similar way, the magnetic two-photon emission process which follows the radiative excitation of Landau levels above ground is calculated. The two-photon scattering and two-photon emission are of the same order as the single-photon magnetic scattering. All three of these processes, and in optically thick cases also their inverses, are included in radiative transport calculations modeling accreting pulsars and gamma-ray bursters. These processes play a prominent role in determining the relative strength of the first two cyclotron harmonics, and their effects extend also to the higher harmonics.

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