Circular polarization and linear polarization of pulsars

In summary, the polarization of radiation from pulsars is a complex topic that is influenced by both propagation effects and source effects. While the majority of pulsar polarization is elliptical, the exact balance between circular and linear polarization may vary depending on the frequency resolution of the observations. Several papers have discussed this issue in detail.
  • #1
ZX.Liang
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5
Is there more circular polarization or linear polarization in the radiation flux of pulsars?

Have any papers discussed this issue?
 
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  • #2
Many papers consider polarization from radio pulsars (for example, https://www.cambridge.org/core/jour...aray-pulsars/8547BD48EAC9A5C9BF8A38346ED506D1). The polarization is very complicated because it tends to be strongly affected by propagation effects, rather than simple source effects. By and large the polarization is elliptical, which implies a combination of both. I would say that answers to your question also relate to whether you are talking about spectrally integrated or spectrally resolved, because some types of polarization shift the frequency of the light in ways that would cancel out if you don't have sufficient spectral resolution.
 
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Likes berkeman

1. What is the difference between circular polarization and linear polarization?

Circular polarization and linear polarization refer to the orientation of the electric field in an electromagnetic wave. In circular polarization, the electric field rotates in a circular motion, while in linear polarization, the electric field oscillates in a straight line. This difference in orientation can have important implications in the study of pulsars.

2. How are pulsars observed in terms of polarization?

Pulsars are observed using radio telescopes that are equipped with receivers capable of detecting the polarization of radio waves. The polarization of pulsars can be measured by analyzing the changes in the orientation of the electric field as the pulsar rotates.

3. What causes the circular polarization of pulsars?

The circular polarization of pulsars is caused by the strong magnetic fields present in these objects. As the pulsar rotates, the magnetic field lines sweep across the line of sight, causing the electric field to rotate and resulting in circularly polarized radio waves.

4. How is the polarization of pulsars related to their rotation?

The polarization of pulsars is closely related to their rotation. As the pulsar rotates, the orientation of the magnetic field and the resulting polarization of the radio waves also change. This can provide valuable information about the pulsar's rotation rate and magnetic field strength.

5. Why is studying the polarization of pulsars important?

Studying the polarization of pulsars can provide valuable insights into their physical properties, such as their magnetic field strength and rotation rate. This information can help us better understand the mechanisms behind pulsar emission and the evolution of these fascinating objects.

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