Seismology Of The Sun And The Distant Stars PDF Download
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Author | : D.O. Gough |
Publisher | : Springer Science & Business Media |
Total Pages | : 473 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9400946082 |
Download Seismology of the Sun and the Distant Stars Book in PDF, ePub and Kindle
The history of modern helioseismology is only ten years old. In 1975 F-L Deubner separated for the first time the spatial and temporal pro perties of the solar five-minute oscillations, and was thus able to measure the dispersion relation for high-degree acoustic modes (p modes). The diagnostic value of these observations was appreciated immediately. Indeed, by comparing the observed relation with computations that had already been carried out by R.K. Ulrich, and subsequently by H. Ando and Y. Osaki, it was recognised that contemporary solar models that had been constructed with the low observed neutrino flux in mind were too hot in their outer layers. Moreover, their convection zones were too shallow. Since that time the observations have improved. There is now good reason to suppose that a sufficiently careful analysis will lead to a direct determination of the helium abundance in the solar convection zone, especially when foreseeable further improvements in the observations have been achieved. The data will also provide useful diagnostics of the uncertain equation of state of partially ionized plasmas, and they might also enable us to measure the large-scale structure of the convec tive flow.
Author | : D O Gough |
Publisher | : |
Total Pages | : 496 |
Release | : 1986-03-31 |
Genre | : |
ISBN | : 9789400946095 |
Download Seismology of the Sun and the Distant Stars Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 22 |
Release | : 1985 |
Genre | : |
ISBN | : |
Download Contributions to Proceedings from the NATO Advanced Research Workshop on the Seismology of the Sun and Distant Stars Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 351 |
Release | : 1988 |
Genre | : |
ISBN | : |
Download Seismology of the Sun and Sun-like Stars Book in PDF, ePub and Kindle
Author | : Prof. Dr. Roland Wielen |
Publisher | : Springer Science & Business Media |
Total Pages | : 1122 |
Release | : 2013-04-17 |
Genre | : Science |
ISBN | : 366212355X |
Download Literature 1986, Part 1 Book in PDF, ePub and Kindle
Author | : Instituto de Astrofísica de Canarias |
Publisher | : |
Total Pages | : 720 |
Release | : 1988 |
Genre | : Astroseismology |
ISBN | : |
Download Seismology of the Sun & Sun-like Stars Book in PDF, ePub and Kindle
Author | : John A. Eddy |
Publisher | : Government Printing Office |
Total Pages | : 316 |
Release | : 2009 |
Genre | : Business & Economics |
ISBN | : 9780160838088 |
Download The Sun, the Earth, and Near-earth Space Book in PDF, ePub and Kindle
" ... Concise explanations and descriptions - easily read and readily understood - of what we know of the chain of events and processes that connect the Sun to the Earth, with special emphasis on space weather and Sun-Climate."--Dear Reader.
Author | : Gabrielle Berthomieu |
Publisher | : Springer Science & Business Media |
Total Pages | : 509 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9400905416 |
Download Inside the Sun Book in PDF, ePub and Kindle
Proceedings of the 121st Colloquium of the International Astronomical Union, held at Versailles, France, May 22-26, 1989
Author | : |
Publisher | : |
Total Pages | : 1162 |
Release | : 1986 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : Jørgen Christensen-Dalsgaard |
Publisher | : Springer Science & Business Media |
Total Pages | : 582 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9400940092 |
Download Advances in Helio- and Asteroseismology Book in PDF, ePub and Kindle
Helio- and asteroseismology study the interior of the Sun and other stars, by means of observations of oscillations on their surfaces. The last 10 years in the study of the solar interior, to a has witnessed a very rapid evolution point where we can now contemplate investigating the physical state of matter, or the details of rotation and other large-scale motion, in the Sun. The stellar studies are in some respects at the point of the solar studies 10 years ago, but appear poised to take off. Thus the time was deemed ripe for lAO Symposium No 123, to assess the present status of this work, and plan for its future development. Apart from the seismic data, few observations are available to provide information about stellar interiors. Detailed studies, by spectral analysis, can be made of stellar surface properties, including atmospheric temperature and chemical composition. However, the stellar radiative spectrum is almost entirely fixed by the mass, luminosity, radius and surface rotation of the star, and contains essentially no other information about the interior. An important test of stellar evolution theory is provided by observations of stel lar clusters, whose members can reasonably be assumed to have the same age and chemical composition. The location of such stars in a HR diagram, where luminosity is plotted against the effective temperature, can roughly be understood in terms of stellar evolution calculations.