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arXiv:astro-ph/0003121 (astro-ph)
[Submitted on 8 Mar 2000]

Title:Deeply penetrating banded zonal flows in the solar convection zone

Authors:R. Howe, J. Christensen-Dalsgaard, F. Hill, R. W. Komm, R. M. Larsen, J. Schou, M. J. Thompson, J. Toomre
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Abstract: Helioseismic observations have detected small temporal variations of the rotation rate below the solar surface corresponding to the so-called `torsional oscillations' known from Doppler measurements of the surface. These appear as bands of slower and faster than average rotation moving equatorward. Here we establish, using complementary helioseismic observations over four years from the GONG network and from the MDI instrument on board SOHO, that the banded flows are not merely a near-surface phenomenon: rather they extend downward at least 60 Mm (some 8% of the total solar radius) and thus are evident over a significant fraction of the nearly 200 Mm depth of the solar convection zone.
Comments: 4 pages, 4 figures To be published in ApJ Letters (accepted 3/3/2000)
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0003121
  (or arXiv:astro-ph/0003121v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0003121
Related DOI: https://doi.org/10.1086/312623

Submission history

From: Rachel Howe [view email]
[v1] Wed, 8 Mar 2000 23:37:29 UTC (168 KB)
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