AI Article Synopsis
- - A new model has been developed to explain the high-frequency interpulse (HFIP) emission pattern of the Crab pulsar, suggesting that the emission bands are actually diffraction fringes influenced by the pulsar's magnetosphere acting as a diffraction screen.
- - The model accounts for specific features like band spacing, high polarization, and a constant position angle, effectively enabling the "tomography" of the pulsar's magnetosphere and directly revealing its plasma density profile.
- - The model is designed to be testable with future predictions made, and it proposes a connection between the observed "high-frequency components" and the HFIP emissions.
Article Abstract
The model explaining the spectral "zebra" pattern of the high-frequency interpulse (HFIP) of the Crab pulsar radio emission is proposed. The observed emission bands are diffraction fringes in the spectral domain. The pulsar's own plasma-filled magnetosphere plays a role of a frequency-dependent "diffraction screen." The observed features such as the proportional band spacing, high polarization, constant position angle, and others are explained. The model allows one to perform "tomography" of the pulsar magnetosphere. Indeed, we have obtained the plasma density profile directly from observations, without assuming a particular magnetosphere. Our model is testable and several predictions are made. The two "high-frequency components" observed at the same frequencies as the HFIP are proposed to be related to HFIP.
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| http://dx.doi.org/10.1103/PhysRevLett.133.205201 | DOI Listing |
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