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| Paper: |
Interpole Communication in Radio Pulsars and the Resulting Theoretical Challenges |
| Volume: |
466, Electromagnetic Radiation from Pulsars and Magnetars |
| Page: |
47 |
| Authors: |
Weltevrede, P.; Wright, G.; Johnston, S. |
| Abstract: |
Here we discuss some recent, and less recent, radio
observations that demonstrate an intimate link between the emission
generated by opposite magnetic poles of neutron stars. More
specifically, there are examples of pulsars which show quasi-periodic
brightening of the emission generated by both poles with a time delay
which remains fixed on a timescale of
at least years. This implies that the opposite magnetic poles do not
operate independently of each other, leading to the question about
the nature of the communication channel. In the case of PSR B1055–52
this time delay is very large, corresponding to a light travel
distance of many times the light cylinder radius. A number of physical
models
are explored and
significant objections can be made to each model. So the communication
channel between the magnetic poles of pulsars remains elusive,
although its understanding could prove crucial to understanding the
large-scale structure of magnetospheres. |
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