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Present status of the Taiwan Oscillation Network

Published online by Cambridge University Press:  25 May 2016

Dean-Yi Chou  and
The Ton Team
Dean-Yi Chou
Affiliation:
Physics Department, Tsing Hua University Hsinchu, 30043, Taiwan, R.O.C.

Abstract

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The Taiwan Oscillation Network (TON) is a ground-based network measuring solar intensity oscillations for the study of the internal structure of the Sun. So far, four telescopes have been installed at Teide Observatory (Tenerife), Huairou Solar Observing Station (near Beijing), Big Bear Solar Observatory (California), and Tashkent (Uzbekistan). The TON telescopes take K-line full-disk solar images of diameter 1000 pixels at a rate of one image per minute. The TON high-resolution data is specially suitable to study local helioseismology. Here, we present recent results of three topics on local helioseismology from TON data: (1) Inference of Subsurface Magnetic Field From Absorption Coefficients of p-modes in Active Regions, (2) Subsurface Structure of Emerging Flux Regions From Helioseismology, and (3) Flow Around Sunspots From Measurements of Frequency Shift.

Type
Part I: Helioseismology: From ground or space, a worldwide cooperation
Information
Symposium - International Astronomical Union , Volume 181: Sounding Solar and Stellar Interiors , 1997 , pp. 31 - 38
Copyright
Copyright © Kluwer 1997 

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