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GYRE: A new open-source stellar oscillation code

Published online by Cambridge University Press:  18 February 2014

Rich Townsend ,
Seth Teitler  and
Bill Paxton
Rich Townsend
Affiliation:
Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706, USA
Seth Teitler
Affiliation:
Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706, USA
Bill Paxton
Affiliation:
Kavli Institute for Theoretical Physics, University of California Santa Barbara, CA 93106, USA
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Abstract

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We introduce GYRE, a new open-source stellar oscillation code which solves the adiabatic/non-adiabatic pulsation equations using a novel Magnus Multiple Shooting (MMS) numerical scheme. The code has a global error scaling of up to 6th order in the grid spacing, and can therefore achieve high accuracy with few grid points. It is moreover robust and efficiently makes use of multiple processor cores and/or nodes. We present an example calculation using GYRE, and discuss recent work to integrate GYRE into the asteroseismic optimization module of the MESA stellar evolution code.

Keywords

methods: numericalstars: evolutionstars: interiorsstars: oscillations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 505 - 506
Copyright
Copyright © International Astronomical Union 2014 

References

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Townsend, R. H. D. & Teitler, S. A. 2013, MNRAS, 435, 3406CrossRefGoogle Scholar