К теории происхождения квазигармонических всплесков на пульсаре в Крабовидной туманности

Письма в Астрономический журнал. 2022. Т. 48. № 10. С. 720–732.

Железняков В. В., Shaposhnikov V.

The propagation and conditions for the escape of microwave radio emission from the local
source of quasi-harmonic bursts that is a current sheet filled with an electron–proton or electron–positron
plasma have been studied in the geometrical optics approximation. A comparative analysis of these
corpuscular compositions has shown that in the electron–proton plasma, in contrast to the ordinary
component that freely escapes from the source, the escape of the extraordinary radiation component into
the magnetosphere is impossible. In the electron–positron plasma the situation with the escape of the
extraordinary component is retained. However, a criterion for efficient escape from the current sheet into
the surrounding magnetosphere has been established for the ordinary radiation. In both cases of the
corpuscular composition, the escaping radiation is polarized identically (linearly, in accordance with the
well-known results of the observations by Hankins and Eilek). Our analysis does not allow one to make a
definite choice between both plasma compositions in the source using one object, the Crab pulsar, as an
example. Further studies, a search for other objects like the Crab pulsar, are needed.

Keywords: магнитосфера, magnetosphere, радиоизлучение, Crab pulsar, current sheet, radio emission, Пульсар в Крабе, токовый слой