A Space & astronomy forum. SpaceBanter.com

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » Astronomy Misc
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Black Holes May Fill the Universe with Seeds of Life (Forwarded)



 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #2  
Old April 26th 07, 08:36 PM posted to sci.astro
[email protected]
external usenet poster
 
Posts: 165
Default Black Holes May Fill the Universe with Seeds of Life (Forwarded)

On Apr 25, 6:09 am, Andrew Yee wrote:
Public Affairs Office
Harvard-Smithsonian Center for Astrophysics
Cambridge, Massachusetts

For more information, contact:

David A. Aguilar, Director of Public Affairs
Harvard-Smithsonian Center for Astrophysics
617-495-7462

Christine Pulliam, Public Affairs Specialist
Harvard-Smithsonian Center for Astrophysics
617-495-7463

For Release: Friday, April 20, 2007

Release No.: 2007-09

Black Holes May Fill the Universe with Seeds of Life

Cambridge, MA -- New research shows that black holes are not the ultimate
destroyers that are often portrayed in popular culture. Instead, warm gas
escaping from the clutches of enormous black holes could be one source of
the chemical elements that make life possible.

Immediately after the Big Bang, the universe contained only hydrogen and
helium. Heavier chemical elements had to be cooked up inside the first
stars, then scattered throughout space to be incorporated in
next-generation stars and their planets. Black holes may have helped to
distribute those elements across the cosmos.

Black holes are not all-consuming monsters. Until gas crosses the boundary
known as the event horizon, it can still escape if it is heated
sufficiently.

"One of the big questions in cosmology is how much influence massive black
holes exert on their surroundings," said co-author Martin Elvis of the
Harvard-Smithsonian Center for Astrophysics (CfA). "This research helps
answer that question."

An international team of astronomers has found that hot winds from giant
black holes in galactic centers may blow heavy elements like carbon and
oxygen into the vast tracts of space between galaxies.

The team, led by Yair Krongold of the Universidad Nacional Autonoma de
Mexico, studied the supermassive black hole at the center of the galaxy
NGC 4051. They found that gas was escaping from much closer to the black
hole than previously thought. The outflow source is located about 2,000
Schwarzschild radii from the black hole, or about five times the size of
Neptune's orbit. (The Schwarzschild radius is the black hole's "point of
no return" -- about 4 million miles for the black hole in NGC 4051.)

The team could also determine the fraction of gas that was avoiding being
swallowed. That fraction ended up being smaller than earlier studies
suggested.

"We calculate that between 2 to 5 percent of the accreting material is
flowing back out," says team member Fabrizio Nicastro of the CfA.

Winds from black holes have been clocked at speeds of up to 4 million
miles per hour. Over thousands of years, the chemical elements such as
carbon and oxygen in those winds can travel immense distances, eventually
becoming incorporated into the cosmic clouds of gas and dust, called
nebulae, that will form new stars and planets.

This research, which used data from the European Space Agency's XMM-Newton
satellite, is being reported in the April 20 issue of The Astrophysical
Journal.

Note to editors: Images to accompany this release are online at
http://cfa-www.harvard.edu/press/200...09_images.html


Yes not to mention that they also explode.

http://news.research.ohiou.edu/news/index.php?item=91

Sending all that stuff it swallowed back into space.

Do you guys ever actually admit you have been mistaken or what?

They do the Bosenova baby. Big time.

And so if at the center is Bose Einstein condensate, and it does the
Bosenova, then it probably could create carbon atoms in that
explosion, since the pressures are at least what you find in a normal
supernova.

 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Black Holes are the Universe G=EMC^2 Glazier[_1_] Misc 6 April 12th 07 04:49 PM
Triple Interactions of Supermassive Black Holes Found To Be Common In Early Universe (Forwarded) Andrew Yee News 0 January 12th 07 07:50 PM
Omega of all black holes in the universe? [email protected] Research 0 July 29th 06 09:20 PM
Growing Supermassive Black Holes from Seeds (Forwarded) Andrew Yee Astronomy Misc 0 January 13th 06 05:53 AM
Growing Supermassive Black Holes from Seeds (Forwarded) Andrew Yee News 0 January 13th 06 05:23 AM


All times are GMT +1. The time now is 01:28 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 SpaceBanter.com.
The comments are property of their posters.