Jennifer Nicholls, Michelle C. Storey, PASA, 16 (2), 139
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Next Section: Introduction
An Analytic Approximation to the Bounce-Average Drift Angle for Gyrosynchrotron-Emitting Electrons in the Magnetosphere of V471 Tauri
Jennifer Nicholls
Michelle C. Storey
Special Research Centre for Theoretical Astrophysics,
School of Physics, University of Sydney NSW 2006
j.nicholls@physics.usyd.edu.au
Abstract:
Numerical modelling (Nicholls and Storey 1998) suggests that the eclipse of a wedge of enhanced number density of mildly relativistic electrons is responsible for the variations in quiescent radio emission of the binary system, V471 Tauri. In the model, the wedge of enhanced density is created by electrons accelerated in the interaction region of the magnetospheres of the two stars, which subsequently drift in azimuth while emitting gyrosynchrotron emission. We present here an analytic approximation to the opening angle of the wedge of enhanced density and show that it is consistent with the opening angle derived from numerical modelling for reasonable values of the input parameters.
Keywords: stars: individual(V471 Tauri) -- stars: magnetic fields -- binaries: close -- radiation mechanisms: nonthermal
- Introduction
- Review of Bounce-Average Quantities
- The Lorentz Factor
- Calculation of the average drift angle
- Application to V471 Tau
- Results and Conclusion
- Acknowledgments
- References
© Copyright Astronomical Society of Australia 1997 ASKAP
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