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Radio Physics and Radio Astronomy

ISSN 印刷: 2152-274X
ISSN オンライン: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v1.i1.30
pages 19-26

THE MECHANISM OF COMPONENT FORMATION OUT OF THE MAIN PULSE OF A RADIO PULSAR. I. THE PRECURSOR

S. A. Petrova
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Chervonopraporna St., Kharkiv 61002, Ukraine

要約

Induced scattering of radio emission off the ultrarelativistic particles in a superstrong magnetic field is considered. The problem of radio beam scattering into the background radiation is solved. In the magnetosphere of a pulsar, this process can be efficient, and the scattered radiation concentrates close to the external magnetic field direction. Because of rotational aberration, the scattered component precedes the main pulse in the pulse profile and can be identified with the precursor component of a pulsar. In the framework of our model, the observed polarization, spectral and fluctuation properties of the precursor emission as well as its connection to the main pulse are explained.


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