Formation of the Radio Profile Components of the Crab Pulsar - Astrophysics > Solar and Stellar AstrophysicsReport as inadecuate




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Abstract: The induced Compton scattering of radio emission off the particles of theultrarelativistic electron-positron plasma in the open field line tube of apulsar is considered. We examine the scattering of a bright narrow radio beaminto the background over a wide solid angle and specifically study thescattering in the transverse regime, which holds in a moderately strongmagnetic field. Making use of the angular distribution of the scatteredintensity and taking into account the effect of rotational aberration in thescattering region, we simulate the profiles of the backscattered components asapplied to the Crab pulsar. It is suggested that the interpulse IP, thehigh-frequency interpulse IP- and the pair of the so-called high-frequencycomponents HFC1 and HFC2 result from the backward scattering of the mainpulse MP, precursor PR and the low-frequency component LFC, respectively.The components of the high-frequency profiles, the IP- and HFCs, areinterpreted for the first time. The HFC1 and HFC2 are argued to be a singlecomponent split by the rotational aberration close to the light cylinder. It isdemonstrated that the observed spectral and polarization properties of theprofile components of the Crab pulsar as well as the giant pulse phenomenonoutside of the MP can be explained in terms of our model.



Author: S. A. Petrova

Source: https://arxiv.org/







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