Skip to main content Accessibility help
×
Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-02T20:12:06.989Z Has data issue: false hasContentIssue false

1 - A selective overview

Published online by Cambridge University Press:  11 November 2009

Jørgen Christensen-Dalsgaard
Affiliation:
Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark
Michael J. Thompson
Affiliation:
Space & Atmospheric Physics, The Blackett Laboratory, Imperial College, London SW7 2BZ, UK
Michael J. Thompson
Affiliation:
Imperial College of Science, Technology and Medicine, London
Jørgen Christensen-Dalsgaard
Affiliation:
Aarhus Universitet, Denmark
Get access

Summary

Introduction

Although sometimes ignored, there is no doubt that hydrodynamical processes play a central role in virtually all areas of astrophysics. If they are neglected in the analyses of observations and the modelling, the results for any object must become questionable; the same is therefore true of the understanding of basic astrophysical phenomena and processes that result from such investigations.

Investigations of astrophysical fluid dynamics are hampered by both theoretical and observational problems. On the theoretical side it is evident that the systems being studied are so complex that realistic analytical investigations are not possible. Furthermore, the range of scale, extending in the case of stars from the stellar radius to scales of order 100m or less, entirely prevents a complete numerical solution. Observationally, the difficulty is to find data that are sensitive to the relevant processes, without being overwhelmed by other, similarly uncertain, effects. Progress in this field therefore requires a combination of physical intuition combined with analysis of simple model systems, possibly also experiments analogous to astrophysical systems, detailed numerical simulations to the extent that they are feasible, together with a judicious choice of observations and development and application of analysis techniques that can isolate the relevant features. Douglas Gough has excelled in all these areas.

In this brief introduction we make no pretense of reviewing the whole vast field of hydrodynamical processes in astrophysics, or even in stars.

Type
Chapter
Information
Publisher: Cambridge University Press
Print publication year: 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Save book to Kindle

To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

  • A selective overview
    • By Jørgen Christensen-Dalsgaard, Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark, Michael J. Thompson, Space & Atmospheric Physics, The Blackett Laboratory, Imperial College, London SW7 2BZ, UK
  • Edited by Michael J. Thompson, Imperial College of Science, Technology and Medicine, London, Jørgen Christensen-Dalsgaard, Aarhus Universitet, Denmark
  • Book: Stellar Astrophysical Fluid Dynamics
  • Online publication: 11 November 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536335.002
Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

  • A selective overview
    • By Jørgen Christensen-Dalsgaard, Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark, Michael J. Thompson, Space & Atmospheric Physics, The Blackett Laboratory, Imperial College, London SW7 2BZ, UK
  • Edited by Michael J. Thompson, Imperial College of Science, Technology and Medicine, London, Jørgen Christensen-Dalsgaard, Aarhus Universitet, Denmark
  • Book: Stellar Astrophysical Fluid Dynamics
  • Online publication: 11 November 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536335.002
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • A selective overview
    • By Jørgen Christensen-Dalsgaard, Teoretisk Astrofysik Center, Danmarks Grundforskningsfond, and Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark, Michael J. Thompson, Space & Atmospheric Physics, The Blackett Laboratory, Imperial College, London SW7 2BZ, UK
  • Edited by Michael J. Thompson, Imperial College of Science, Technology and Medicine, London, Jørgen Christensen-Dalsgaard, Aarhus Universitet, Denmark
  • Book: Stellar Astrophysical Fluid Dynamics
  • Online publication: 11 November 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536335.002
Available formats
×