Radio Emission from Pulsars due to Relativistic Plasma

Autor:	Tridib Roy, R. T. Gangadhara
Rok vydání:	2019
Předmět:	Physics Relativistic plasma Pulsar Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Polarization (waves)
Zdroj:	The Astrophysical Journal. 878:148
ISSN:	1538-4357 0004-637X
Popis:	Pulsar radio emission is not well understood because of a lack of knowledge about the emission geometry and the plasma process involved. We develop a mechanism for pulsar radio emission that takes into account the detailed viewing geometry of pulsars and the dipolar magnetic field configuration. Using a suitably chosen geometry and plasma parameters, we derive analytical expressions for the Stokes parameters of the radiation field in the frame centered on the neutron star. We have simulated pulse profiles based on our analytical formulation. It seems that we can explain the enhanced radiation and most of the diverse polarization properties of radio pulsars. We have estimated the brightness temperature, which seems to agree with the observations. The polarization angle predicted by the model is in good agreement with the rotating vector model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1919f7b052482ec7c8a9e7dda0bb39fe https://doi.org/10.3847/1538-4357/ab1fe5 Zobrazit plný text záznamu