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Properties of the Optical 2-Second Oscillations in E1405−451*

Published online by Cambridge University Press:  12 April 2016

S. Larsson
S. Larsson*
Affiliation:
Lund Observatory, Lund, Sweden

Abstract

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The AM Her type system E1405−451 is known to show 1 - 3 second variability in its optical emission. Our observations show this variability to be due to quasi-periodic oscillations with a coherence time on the order of one minute. The observations also reveal variations in the color of the oscillating light source. These variations are difficult to explain with present cyclotron emission models.

Type
II. Radio, IR and Optical Observations
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 187 - 192
Copyright
Copyright © Reidel 1987

Footnotes

*

Based on observations obtained at the European Southern Observatory, La Silla, Chile.

References

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