The effect of differential refraction on wave propagation in rotating pulsar magnetospheres

@article{Fussell2004TheEO,
  title={The effect of differential refraction on wave propagation in rotating pulsar magnetospheres},
  author={D. Fussell and Qinghuan Luo},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2004},
  volume={349},
  pages={1019-1026}
}
  • D. Fussell, Q. Luo
  • Published 28 February 2004
  • Physics
  • Monthly Notices of the Royal Astronomical Society
Refraction of wave propagation in a corotating pulsar magnetospheric plasma is considered as a possible interpretation for observed asymmetric pulse profiles with multiple components. The pulsar radio emission produced inside the magnetosphere propagates outwards through the rotating magnetosphere, subject to refraction by the intervening plasma that is spatially inhomogeneous. Both effects of a relativistic distribution of the plasma and rotation on wave propagation are considered. It is shown… Expand

Figures from this paper

The induced turbulence effect on propagation of radio emission in pulsar magnetospheres
The effect of photon-beam-induced turbulence on the propagation of radio emission in a pulsar magnetosphere is discussed. Beamed radio emission with a high brightness temperature can generateExpand
The Pulsar Shadow as the Origin of Double Notches in Radio Pulse Profiles
We present a model of the eclipsing of a rotating, spatially extended source of directional emission by a central absorber and apply it to the pulsar magnetosphere. The model assumes the radiallyExpand
Rotational Sweepback of Magnetic Field Lines in Geometrical Models of Pulsar Radio Emission
We study the rotational distortions of the vacuum dipole magnetic field in the context of geometric models of the radio emission from pulsars. We find that at low altitudes the rotation deflects theExpand
Reversals of Radio Emission Direction in PSR B1822?09
The pulse profile of pulsar B1822-09 exhibits a very peculiar kind of mode changing: a "precursor" appearing just in front of the main pulse (MP) exhibits periods of nulling, during which anExpand
Single pulses as emission from multiple subsources
Single pulses of pulsar radio emission are modelled as the superposition of radiation originating from many small subsources that are randomly distributed in the emission region. The individualExpand
The polarization of drifting subpulses
Using new techniques based on the polarimetric fluctuation spectrum, the fluctuation behaviour of the polarization of individual pulses is examined in three pulsars that show drifting subpulses,Expand
The subpulse modulation properties of pulsars at 21 cm
We present the results of a systematic, unbiased search for subpulse modulation of 187 pulsars performed with the Westerbork Synthesis Radio Telescope (WSRT) in the Netherlands at an observingExpand
The subpulse modulation properties of pulsars at 92 cm and the frequency dependence of subpulse modulation
Context: A large sample of pulsars has been observed to study their subpulse modulation at an observing wavelength (when achievable) of both 21 and 92 cm using the Westerbork Synthesis RadioExpand

References

SHOWING 1-10 OF 29 REFERENCES
Wave propagation in pulsar magnetospheres - Refraction of rays in the open flux zone
The propagation of waves through a relativistically outflowing electron-positron plasma in a very strong dipolar magnetic field, conditions expected in pulsar magnetospheres, is investigated.Expand
Cyclotron effects on wave dispersion in pulsar plasmas
Dispersion in an intrinsically relativistic, one-dimensional, electron–positron pair plasma (a pulsar plasma) is treated exactly, generalizing earlier results that applied in the low-frequency limitExpand
Cyclotron absorption in rotating pulsar magnetospheres
Cyclotron absorption in relativistic pulsar plasma is discussed in detail. The effect of cyclotron absorption on pulsar radio emission is examined, including the corotation of the plasma with theExpand
Refraction in a pulsar magnetosphere - the effect of a variable emission height on pulse morphology
TLDR
The Petrova (2000) model to calculate pulse profiles is extended to a variable emission height model to make it physically self-consistent and seem to be less realistic and cannot be used to fit (typical) multifrequency pulsar observations. Expand
On Two-Stream Instability in Pulsar Magnetospheres
If the electron-positron plasma flow from the pulsar environment is stationary, the two-stream instability does not have enough time to develop in the pulsar magnetosphere. In that case theExpand
Relativistic Plasma Emission and Pulsar Radio Emission: A Critique
Relativistic plasma emission due to a beam instability in the polar cap regions is examined critically as a pulsar radio emission mechanism. Wave dispersion in the pulsar plasma is discussed, basedExpand
A Relativistic Model of Pulsar Polarization
The rotating vector model of pulsar polarization of Radhakrishnan and Cooke (1969) is extended here to include first-order special relativistic effects. The model predicts that the centroid of theExpand
A Ray-Tracing Model of the Vela Pulsar
In the relativistic plasma surrounding a pulsar, a subluminal ordinary-mode electromagnetic wave will propagate along a magnetic field line. After some distance, it can break free of the field lineExpand
Cyclotron absorption of radio emission within pulsar magnetospheres
ABSTRA C T Absorption of radio emission through normal cyclotron resonance within pulsar magnetospheres is considered. The optical depth for cyclotron damping is calculated using a plasmaExpand
Understanding the Radio Emission Geometry of Multiple-Component Radio Pulsars from Retardation and Aberration Effects
We have conducted a detailed analysis of the emission geometry of a handful of radio pulsars that have prominent, multiple-component profiles at meter wavelengths. From careful determination of theExpand
...
1
2
3
...