Jump to ContentJump to Main Navigation
What Does a Black Hole Look Like?$
Users without a subscription are not able to see the full content.

Charles D. Bailyn

Print publication date: 2014

Print ISBN-13: 9780691148823

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691148823.001.0001

Show Summary Details
Page of

PRINTED FROM PRINCETON SCHOLARSHIP ONLINE (www.princeton.universitypressscholarship.com). (c) Copyright Princeton University Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in PRSO for personal use.date: 23 May 2022

Outflows and Jets

Outflows and Jets

(p.43) 3 Outflows and Jets
What Does a Black Hole Look Like?

Charles D. Bailyn

Princeton University Press

This chapter looks at the presence of outflows or jets, a somewhat unexpected feature of accretion flows. There is strong observational evidence that some fraction of the infalling material reverses course near the accreting object and is shot out perpendicularly to the accretion disk. In some cases, narrow collimated beams of emission are observed emerging from the central-most regions of galaxies and continuing across the whole of the galaxy, depositing their energy hundreds of kiloparsecs away from their origin. These phenomena are sometimes described as jets “emerging” from a black hole. This parlance is misleading—the jets do not, and indeed could not, emerge from inside the event horizon. Rather, some mechanism redirects the energy generated by the accretion process into a fraction of the infalling material and provides enough bulk kinetic energy for the material to escape the accretion process before the material enters the event horizon.

Keywords:   outflows, jets, accretion flows, collimated emission beams, event horizon, infalling material, kinetic energy, black holes

Princeton Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us.