High-polarization radiation from magnetized accretion disks

Details High-polarization radiation from magnetized accretion disks High-polarization radiation from magnetized accretion disks

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...252...10y&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 252, no. 1, Dec. 1991, p. 10-12.

Statistics

Computation

5

Accretion Disks, Astronomical Polarimetry, Stellar Magnetic Fields, Synchrotron Radiation, Bl Lacertae Objects, Computational Astrophysics, Quasars

Scientific paper

The polarization and intensity of radiation emergent from a geometrically thin and magnetized accretion disk are calculated, assuming that the radiation is synchrotron radiation scattered by thermal electrons in the disk. The results show that the degree of polarization and intensity depend sensitively on the orientation and on the total optical depth of the disk, and that the degree of polarization can exceed considerably the limit of 11.7 percent obtained with semiinfinite scattering atmospheres. The high degree of linear polarization and rapid variability of the disk radiation are consistent with observations of some QSOs and BL Lacertae objects.

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