Night-time science with large solar telescopes: the magnetic Sun through time

Marsden, S. C. (2010) Night-time science with large solar telescopes: the magnetic Sun through time. Astronomische Nachrichten, 331 (6). pp. 577-580. ISSN 0004-6337

Abstract

Today the Sun has a regular magnetic cycle driven by a dynamo action. But how did this regular cycle develop? How
do basic parameters such as rotation rate, age, and differential rotation affect the generation of magnetic fields? Zeeman Doppler imaging (ZDI) is a technique that uses high-resolution observations in circularly polarised light to map the surface magnetic topology on stars. Utilising the spectropolarimetric capabilities of future large solar telescopes it will be possible to study the evolution and morphology of the magnetic fields on a range of Sun-like stars from solar twins through to
rapidly-rotating active young Suns and thus study the solar magnetic dynamo through time. In this article I discuss recent results from ZDI of Sun-like stars and how we can use night-time observations from future solar telescopes to solve unanswered questions about the origin and evolution of the Sun's magnetic dynamo.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright 2010 WILEY-VCH Verlag GmbH. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 29 Jul 2014 05:28
Last Modified: 05 Dec 2014 01:27
Uncontrolled Keywords: magnetic fields; Sun; stars; polarimetric telescopes
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020102 Astronomical and Space Instrumentation
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020107 Mesospheric, Ionospheric and Magnetospheric Physics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1002/asna.201011376
URI: http://eprints.usq.edu.au/id/eprint/25464

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