Resources
Q & A
Glossary
Acronym Guide
Further Reading
Outside the Site
Google Sky
WWT
Facebook
Youtube
Twitter
Flickr
Pinterest
Multimedia, Etc
Images/Illustrations
Animation & Video
Special Features
Chandra Podcasts
Desktop Images
The Big Chandra Picture
Presentations
Handouts
Screen Savers
Audio
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Q&A: Black Holes

Q:
When a star and a black hole encounter one another, some of the matter in the star may enter the black hole while a lot of the star's matter may be spun off out into space. What becomes of the contents of two black holes that collide? Is some of the material returned to normal space and time?

A:
We actually know very little about the details of a black hole merger, but we believe it is safe to say that matter inside the event horizon of a black hole will not be spit back out in a collision. However, simulations of supermassive black hole collisions do show an enormous output of gas and radiation. In fact, supermassive black hole collisions may be the powering force behind quasars, some of the brightest objects in the Universe.

The gas in the violent outflow is likely from the matter surrounding the supermassive black holes before collision rather than the matter contained within.

Chandra has a beautiful image and description of a massive black hole merger:
http://chandra.harvard.edu/photo/2002/0192/index.html

More information on quasars may be found in the X-ray Astronomy Field Guide to Quasars and Active Galaxies:
http://chandra.harvard.edu/xray_sources/quasars.html

Back | Index | Next