The Emission from Pulsars: I. a Generalized Single-Vector Polarization Model II. a Model for the Sub - and Integrated Pulse Behavior.
The properties of models for pulsar polarization which incorporate localized emission regions corotating with a neutron star were investigated. The formulae applicable to the case where emission comes from near the neutron star surface are derived and compared with those applicable for emission from further out in the magnetosphere. In all the models investigated, it is assumed that the instantaneous polarization position angle is given by the apparent projection of a corotating magnetic field vector on the plane of the sky, and that the percentage of linear polarization is proportional to some power of the apparent projected length of the vector along the line of sight. Relativistic effects which become important for emission from far out in the magnetosphere are discussed and related to the polarization behavior predicted by the models. The pulsar observations important for an understanding of their physical nature are discussed. The relativistic vector model is fit to several pulsars which represent different classes in a popular classification scheme. The Crab Nebula pulsar is discussed in detail.
- Pub Date:
- Physics: Astronomy and Astrophysics;
- Emission Spectra;
- Mathematical Models;
- Neutron Stars;
- Crab Nebula;
- Polarization (Charge Separation);
- Relativistic Effects;