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Superburst Oscillations: ocean and crustal modes excited by X-Ray bursts

Published online by Cambridge University Press:  04 June 2018

Frank R. N. Chambers  and
Anna L. Watts
Frank R. N. Chambers
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, 1090 GE Amsterdam, The Netherlands email: [email protected]
Anna L. Watts
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, 1090 GE Amsterdam, The Netherlands email: [email protected]
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Abstract

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Superburst oscillations are high frequency X-ray variations observed during hours’ long superbursts on accreting neutron stars. We investigate a potential mechanism to explain these observations; a buoyant r-mode, excited in the ocean layers of the star. These modes are affected by ash composition in the ocean so are a good probe of nuclear burning processes. The phenomenon could be used in pulse profile modelling as a way of measuring neutron star mass and radius, and so the dense matter equation of state.

Keywords

stars: neutronX-rays: burstsstars: oscillationsX-rays: binaries
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S337: Pulsar Astrophysics the Next Fifty Years , September 2017 , pp. 324 - 325
Copyright
Copyright © International Astronomical Union 2018 

References

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