- 3C 295
Infobox Galaxy
name=3C 295
epoch=J2000
ra=RA|14|11|20.6cite web
title=NASA/IPAC Extragalactic Database
work=Results for 3C 295
url=http://nedwww.ipac.caltech.edu/
accessdate=2007-04-19]
dec=DEC|+52|12|21
constellation name=Boötes
z=0.4641
dist_ly=5 Gly
type=Radio galaxy
appmag_v=
size_v=2 Mly diameter3C 295 is a narrow-line
radio galaxy located in the constellation ofBoötes . With a redshift of .4641, it is approximately 5 billionlight-year s away fromEarth ).History
The number in its name corresponds with it being the 295th object in the Third Cambridge Catalogue of Radio Sources (which are ordered by
right ascension ). This is also where the prefix 3C came from.The radio galaxy itself is a fairly normal small radio galaxy although unusually its hotspots are readily detected in optical and X-ray emission.cite web
last=Hardcastle
first=M.J.
title=An optical inverse-Compton hotspot in 3C196?
url=http://www.aanda.org/index.php?option=com_base_ora&url=articles/aa/full/2001/27/aa1373/aa1373.html&access=standard&Itemid=81
accessdate=2007-04-20] The X-ray emission from the source is dominated by thermal emission from a rich cluster of galaxies. In optical images about 100 galaxies can be seen. 3C295's cluster has enough material to create another 1,000 galaxies or more, making it one of the most massive objects in the knownUniverse . However, x-ray data showed that there is not enough mass to hold 3C295 together gravitationally, which suggests the presence ofdark matter .cite web
last=Nemiroff
first=Robert
coauthors=Jerry Bonnell
url=http://apod.nasa.gov/apod/ap991125.html
title=3C 295: X-rays From A Giant Galaxy
accessdate=2007-04-20]
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