EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 377/ 2 Article

Free access article

Issue A&A
Volume 377, Number 2, October II 2001
Page(s) 688 - 690
Section The Sun
DOI http://dx.doi.org/10.1051/0004-6361:20011104



A&A 377, 688-690 (2001)
DOI: 10.1051/0004-6361:20011104

Gravitational multipole moments of the Sun determined from helioseismic estimates of the internal structure and rotation

I. W. Roxburgh

Astronomy Unit, Queen Mary, University of London, Mile End Road, London E1 4NS, UK LESIA, Observatoire de Paris, Place Jules Janssen, 92155 Meudon, France

(Received 12 July 2001 / Accepted 31 July 2001 )

Abstract
We determine the gravitational multipole moments J2n, n=1,5, of the sun using a model of the interior structure and of solar rotation obtained from helioseismic inversions. The differential rotation of the convective zone and the underlying transition zone make only a small ($\approx$ $0.5\%$) contribution to the quadrupole moment J2 which is found to have a value $\approx$ $2.21\times 10^{-7}$.


Key words: rotation -- helioseismology




© ESO 2001

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.