by neufer » Sun Mar 15, 2009 1:04 am
bystander wrote:Black hole outflows from Centaurus A detected
Jets and lobes emanating a from central black hole have been imaged at sub-millimeter wavelengths for the first time.
Provided by ESO, Garching, Germany
Astronomy.com - 2009 Jan 28
Stunning picture!:
(Should be an APOD like
http://antwrp.gsfc.nasa.gov/apod/ap080110.html )
http://www.spitzer.caltech.edu/Media/releases/ssc2004-09/release.shtml wrote:
Located 11 million light-years away, Centaurus A is a type of galaxy known as "elliptical." It is one of the brightest sources of radio waves in the sky, which suggests the presence of a supermassive black hole at its center. About 200 million years ago, this galaxy is believed to have consumed a smaller spiral galaxy -- the contents of which appear to be churning inside Centaurus A's core, triggering new generations of star birth. The model predicts that the leftover galaxy will ultimately flatten into a plane before being entirely devoured by Centaurus A. Warped discs like this are the "smoking guns" of galactic cannibalism, providing proof that one galaxy once made a meal of another. Such galactic feeding has long thought to be a mechanism by which giant elliptical galaxies form and grow, and likely provides the fuel that drives the strong radio activity surrounding Centaurus A's central black hole.
Galactic "cannibalism" seems a little strong!
(After all, they
aren't really the same "species" of galaxy.)
How about galaxiaphagy?
(
Do the strong jets imply that Centaurus A is galactose intolerant?)
<<Cannibalism (from Spanish caníbal) is the act or practice of humans eating other humans. The ritualistic eating of human flesh is also known as anthropophagy, from Greek: ἄνθρωπος, anthropos, "human being"; and φαγειν, phagein, "to eat". While taken as a synonym for human cannibalism, this term also applies when a non-human life-form consumes human flesh. In zoology, the term "cannibalism" is extended to refer to any species consuming members of its own kind (see cannibalism (zoology)).>> - from Wikipedia
[quote="bystander"][url=http://www.astronomy.com/asy/default.aspx?c=a&id=7873][b][i]Black hole outflows from Centaurus A detected[/i][/b][/url]
[b]Jets and lobes emanating a from central black hole have been imaged at sub-millimeter wavelengths for the first time.[/b]
[i]Provided by ESO, Garching, Germany[/i]
Astronomy.com - 2009 Jan 28[/quote]
[url=http://www.astronomy.com/asy/objects/images/ngc5128.jpg][b]Stunning picture![/b][/url]:
[img]http://www.astronomy.com/asy/image.ashx?img=ngc5128.jpg&w=450[/img]
(Should be an APOD like [b] http://antwrp.gsfc.nasa.gov/apod/ap080110.html [/b] )
[quote="bystander"]See also: http://www.spitzer.caltech.edu/Media/releases/ssc2004-09/release.shtml[/quote]
[img]http://jpl.nasa.gov/images/spitzer/centaurusa-browse.jpg[/img]
[quote=" http://www.spitzer.caltech.edu/Media/releases/ssc2004-09/release.shtml "]
Located 11 million light-years away, Centaurus A is a type of galaxy known as "elliptical." It is one of the brightest sources of radio waves in the sky, which suggests the presence of a supermassive black hole at its center. About 200 million years ago, this galaxy is believed to have consumed a smaller spiral galaxy -- the contents of which appear to be churning inside Centaurus A's core, triggering new generations of star birth. The model predicts that the leftover galaxy will ultimately flatten into a plane before being entirely devoured by Centaurus A. Warped discs like this are the "smoking guns" of galactic cannibalism, providing proof that one galaxy once made a meal of another. Such galactic feeding has long thought to be a mechanism by which giant elliptical galaxies form and grow, and likely provides the fuel that drives the strong radio activity surrounding Centaurus A's central black hole. [/quote]
Galactic "cannibalism" seems a little strong!
(After all, they [b]aren't really[/b] the same "species" of galaxy.)
How about galaxiaphagy?
([b]Do the strong jets imply that Centaurus A is galactose intolerant?[/b])
<<Cannibalism (from Spanish caníbal) is the act or practice of humans eating other humans. The ritualistic eating of human flesh is also known as anthropophagy, from Greek: ἄνθρωπος, anthropos, "human being"; and φαγειν, phagein, "to eat". While taken as a synonym for human cannibalism, this term also applies when a non-human life-form consumes human flesh. In zoology, the term "cannibalism" is extended to refer to any species consuming members of its own kind (see cannibalism (zoology)).>> - from Wikipedia