Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
Home
Hostname: page-component-5c9bd4d97b-zgjnz Total loading time: 0.174 Render date: 2021-11-19T20:40:45.851Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true, "newUsageEvents": true }
  • English
Journal of Plasma Physics Journal of Plasma Physics

Article contents

Diamagnetic effects during the early stages of star formation

Published online by Cambridge University Press:  01 April 1997

H. U. RAHMAN ,
D. BHATTACHARYA ,
S. RAJPOOT  and
P. AMENDT
H. U. RAHMAN
Affiliation:
Institute of Geophysics and Planetary Physics, University of California, Riverside, California 92521, USA
D. BHATTACHARYA
Affiliation:
Institute of Geophysics and Planetary Physics, University of California, Riverside, California 92521, USA
S. RAJPOOT
Affiliation:
Department of Physics and Astronomy, California State University, Long Beach, California 90840, USA
P. AMENDT
Affiliation:
Lawrence Livermore National Laboratory, University of California, Livermore, California 94551, USA
Get access Rights & Permissions[Opens in a new window]

Abstract

The role of magnetic fields during the initial stages of protostellar cloud collapse is investigated, in particular with respect to the scenario where the magnetic force can be an effective compressor due to diamagnetic effects. A multifluid approach involving electrons, ions of different atomic masses and neutrals is adopted, where each species is treated separately. The electron fluid is compressed by the magnetic pressure force, and the other ion species are pulled by the collective electric field developed by the space charge separation. The neutrals are also dragged owing to collisions with the ions. The difference in charge-to-mass ratio ensures that each ion species is accelerated differently, resulting in a distribution following their atomic masses. This model explores the scenario where the electromagnetic forces can achieve a supercritical mass-to-flux ratio in a magnetized cloud before dynamical collapse due to gravity takes over.

Type
Research Article
Information
Journal of Plasma Physics , Volume 57 , Issue 3 , April 1997 , pp. 535 - 543
Copyright
1997 Cambridge University Press

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.)
4
Cited by

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org 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 sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent 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.

Diamagnetic effects during the early stages of star formation
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and 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 <service> account. Find out more about sending content to Dropbox.

Diamagnetic effects during the early stages of star formation
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and 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 <service> account. Find out more about sending content to Google Drive.

Diamagnetic effects during the early stages of star formation
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *