A Quantitative Non-radial Oscillation Model for the Subpulses in PSR B0943+10
arXiv:0802.2259 · doi:10.1086/587476
Abstract
In this paper, we analyze time series measurements of PSR B0943+10 and fit them with a non-radial oscillation model. The model we apply was first developed for total intensity measurements in an earlier paper, and expanded to encompass linear polarization in a companion paper to this one. We use PSR B0943+10 for the initial tests of our model because it has a simple geometry, it has been exhaustively studied in the literature, and its behavior is well-documented. As prelude to quantitative fitting, we have reanalyzed previously published archival data of PSR B0943+10 and uncovered subtle but significant behavior that is difficult to explain in the framework of the drifting spark model. Our fits of a non-radial oscillation model are able to successfully reproduce the observed behavior in this pulsar.
arXiv comment45 pages, 16 figures, accepted ApJ
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- Differential Frequency-dependent Delay from the Pulsar Magnetosphere
- Characterising the nature of Subpulse Drifting in Pulsars
- Quasi-Periodicities in the Anomalous Emission Events in Pulsars B1859+07 and B0919+06
- A Pulsational Model for the Orthogonal Polarization Modes in Radio Pulsars
- B0943+10: low-frequency study of subpulse periodicity in the Bright mode with LOFAR
- Electromagnetic fields in the exterior of an oscillating relativistic star -- II. Electromagnetic damping
- A Non-Radial Oscillation Model for Pulsar State Switching
- Particle acceleration in the polar cap region of an oscillating neutron star
- Explaining the subpulse drift velocity of pulsar magnetosphere within the space-charge limited flow model
- A Quantitative Model for Drifting Subpulses in PSR B0809+74