Prospects for the Detection of the Deep Solar Meridional Circulation

Details Prospects for the Detection of the Deep Solar Meridional Circulation Prospects for the Detection of the Deep Solar Meridional Circulation

2008-10-01

arxiv.org/abs/0810.0284v1

Astronomy and Astrophysics

Astrophysics

Scientific paper

10.1086/595884

We perform helioseismic holography to assess the noise in p-mode travel-time shifts which would form the basis of inferences of large-scale flows throughout the solar convection zone. We also derive the expected travel times from a parameterized return (equatorward) flow component of the meridional circulation at the base of the convection zone from forward models under the assumption of the ray and Born approximations. From estimates of the signal-to-noise ratio for measurements focused near the base of the convection zone, we conclude that the helioseismic detection of the deep meridional flow including the return component may not be possible using data spanning an interval less than a solar cycle.

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