Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003kfnts...4...91b&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, Suppl, no. 4, p. 91-96
Astronomy and Astrophysics
Astrophysics
Scientific paper
Lately, the notion "tomography" became widely used in astrophysics. By tomography is most often meant the Doppler spectral tomography of close binaries: both cataclysmic and X-ray binaries (research of accretion beams and disks as well as shapes of optical components). The same term is more and more often applied to a wide class of other methods of investigation, e.g., it is often substituted for the term "AGN reverberation mapping". Presently, the term tomography is used in investigations of the HI 21 cm line in the interstellar and intergalactic media, galactic magnetic fields, and even in the exploration of the internal structure of the Sun and the Earth through neutrino flow, it etc. Broadly speaking the tomography means the restoration of a searched object characteristics distribution along a space coordinate for which the allocation does not directly follow from observations. In the astronomical practice the most frequently used restoration is the determination of a distribution along the sight line. This paper focuses mostly on the spectral tomography of binary stars and active galactic nuclei.
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