Helioseismic Measurement of Solar Torsional Oscillations-Reference-Cited by-同舟云学术

Helioseismic Measurement of Solar Torsional Oscillations

Published:2002-04-05 Issue:5565 Volume:296 Page:101-103
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Vorontsov S. V.¹²,Christensen-Dalsgaard J.³,Schou J.⁴,Strakhov V. N.²,Thompson M. J.⁵

Affiliation:

1. Astronomy Unit, Queen Mary, University of London, Mile End Road, London E1 4NS, UK.

2. Institute of Physics of the Earth, B. Gruzinskaya 10, Moscow 123810, Russia.

3. Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark.

4. HEPL Annex A201, Stanford University, Stanford, CA 94305–4085, USA.

5. Space and Atmospheric Physics Group, The Blackett Laboratory, Imperial College of Science, Technology and Medicine, London SW7 2BZ, UK.

Abstract

Bands of slower and faster rotation, the so-called torsional oscillations, are observed at the Sun's surface to migrate in latitude over the 11-year solar cycle. Here, we report on the temporal variations of the Sun's internal rotation from solar p-mode frequencies obtained over nearly 6 years by the Michelson Doppler Imager (MDI) instrument on board the Solar and Heliospheric Observatory (SOHO) satellite. The entire solar convective envelope appears to be involved in the torsional oscillations, with phase propagating poleward and equatorward from midlatitudes at all depths throughout the convective envelope.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference19 articles.

1. The sun is observed to be a torsional oscillator with a period of 11 years

2. The MDI is the high-resolution helioseismic instrument on board SOHO; for details see

3. The Solar Oscillations Investigation - Michelson Doppler Imager

4. . GONG is a ground-based helioseismic network of six stations [

5. The Global Oscillation Network Group (GONG) Project

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