Astronomy:Abell 400
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Short description: Galaxy cluster in the constellation Cetus
| Abell 400 | |
|---|---|
 Abell 400 with the legacy surveys Credit: X-ray (blue): NASA / CXC / D. Hudson, T. Reiprich et al. (AIfA); Radio (pink): NRAO / VLA/ NRL | |
| Observation data (Epoch J2000) | |
| Constellation(s) | Cetus |
| Right ascension | 02h 57m 38.6s[1] |
| Declination | +06° 02′ 00″[1] |
| Richness class | 1[2] |
| Bautz–Morgan classification | II-III[2] |
| Redshift | 0.0244 (7 315 km/s)[1] |
| Distance (co-moving) | 100 Mpc (326 Mly) h−10.705 |
| X-ray flux | (16.2 ± 20.5%)×10−12 erg s−1 cm−2 (0.1–2.4 keV)[1] |
Abell 400 is a galaxy cluster which contains the galaxy NGC 1128 with two supermassive black holes (3C 75) spiraling towards merger.
These two supermassive black holes are contained in NGC 1128. The galaxy, microwave radio jets, multi-million degree X-ray producing gas and resultant radio source is known as 3C 75. X-ray source 2A 0252+060 (1H 0253+058, XRS 02522+060) may be some additional or other portion of Abell 400.[3]
The black holes are an estimated 25,000 light years apart, and thus will take millions of years to collide. Should the two supermassive black holes merge, they will form a single super-supermassive black hole.[4]
Gallery
wider view of Abell 400 with PanSTARRS
See also
References
- ↑ 1.0 1.1 1.2 1.3 "NED results for object ABELL 0400". NASA/IPAC Extragalactic Database (NED). http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Abell+400&extend=no.
- ↑ 2.0 2.1 Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies" (PDF). Astrophysical Journal Supplement Series 70 (May 1989): 1–138. doi:10.1086/191333. ISSN 0067-0049. Bibcode: 1989ApJS...70....1A. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1989ApJS...70....1A&page_ind=0&epage_ind=137&type=PRINTER&data_type=PDF_HIGH&email=&emailsize=500&emailsplit=YES&send=GET&verified=YES. Retrieved March 12, 2012.
- ↑ Wood KS; Meekins JF; Yentis DJ; Smathers HW; McNutt DP; Bleach RD (December 1984). "The HEAO A-1 X-ray source catalog". Astrophys. J. Suppl. Ser. 56 (12): 507–649. doi:10.1086/190992. Bibcode: 1984ApJS...56..507W.
- ↑ "Chandra :: Photo Album :: 3C 75 in Abell 400 :: 06 Apr 06". http://chandra.harvard.edu/photo/2006/a400/.
External links
- Pair of black holes locked in death dance (CNN) Thursday, April 6, 2006; Posted: 2:46 p.m. EDT (18:46 GMT)
- Black Holes Bound to Merge (SPACE.com) 6 April 2006 11:48 am ET
- Black Holes Dance With Incredible Violence (SpaceDaily) Apr 12, 2006
- Study Finds Two Supermassive Black Holes Spiraling Toward Collision (Newswise) Apr 6, 2006
Coordinates: 
02h 57m 38.6s, +06° 02′ 00″
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