| Perseus Cluster | |
 NGC 1275 |
|
| Observation data (Epoch J2000) | |
|---|---|
| Constellation(s) | Perseus |
| Right ascension | 03hh 18m[1] |
| Declination | +41° 30′[1] |
| Number of galaxies | 190[1] |
| Brightest member | NGC 1275 |
| Other designations | |
| Abell 426,[1] NGC 1275 Cluster,[1] | |
| See also: Galaxy groups and clusters, List of galaxy clusters | |
The Perseus Cluster (Abell 426) is a cluster of galaxies in the constellation Perseus. NGC 1275 (also know as Perseus A) is a type 15 Seyfert galaxy located around 235 million Light-years away in the direction of the Constellation In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture For other meanings see Perseus (disambiguation Perseus (ˈpɝsiːəs or /-sjuːs/ is a northern Constellation, named after the Greek Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either NGC 1275 (also know as Perseus A) is a type 15 Seyfert galaxy located around 235 million Light-years away in the direction of the Constellation Galaxy groups and clusters are the largest Gravitationally bound objects to have arisen thus far in the process of cosmic structure formation This page lists some of the more interesting Galaxy clusters and groups For other meanings see Perseus (disambiguation Perseus (ˈpɝsiːəs or /-sjuːs/ is a northern Constellation, named after the Greek It has a red shift of 5,366 km/s and a diameter of 863′. The kilometre ( American spelling: kilometer) symbol km is a unit of Length in the Metric system, equal to one thousand The second ( SI symbol s) sometimes abbreviated sec, is the name of a unit of Time, and is the International System of Units [1] The galaxy cluster is the brightest cluster in the sky when observed in the X-ray band[2].
The cluster contains the radio source 3C 84 which is currently blowing bubbles of relativistic plasma into the core of the cluster. These are seen as holes in an X-ray image of the cluster, as they push away the X-ray emitting gas. They are known as radio bubbles, because they appear as emitters of radio waves due to the relativistic particles in the bubble. The galaxy NGC 1275 is located at the centre of the cluster, where the X-ray emission is brightest. NGC 1275 (also know as Perseus A) is a type 15 Seyfert galaxy located around 235 million Light-years away in the direction of the Constellation
In 2003, astronomers detected the deepest note ever generated in the cosmos, a B♭, after 53 hours of Chandra observations[3]. Year 2003 ( MMIII) was a Common year starting on Wednesday of the Gregorian calendar. Historically Astronomy was more concerned with the classification and description of phenomena in the sky while Astrophysics attempted to explain these phenomena In Music, the term note has two primary meanings 1 a sign used in Musical notation to represent the relative duration and pitch of a Sound; In its most general sense a cosmos is an orderly or harmonious system A (A-sharp or La Dièse is the eleventh Semitone of the Solfege. The Chandra X-ray Observatory is a Satellite launched on STS-93 by NASA on July 23, 1999. No human will actually hear the note, because it is 57 octaves below the keys in the middle of a piano. In Music, an octave ( is the the use of which is "common in most musical systems The sound waves appear to be generated by the inflation of bubbles of relativistic plasma by the central active galactic nucleus in NGC 1275. An active galactic nucleus ( AGN) is a compact region at the centre of a Galaxy which has a much higher than normal luminosity over some or all of the Electromagnetic NGC 1275 (also know as Perseus A) is a type 15 Seyfert galaxy located around 235 million Light-years away in the direction of the Constellation The are visible as ripples in the X-ray band using Chandra X-ray Observatory, as the X-ray brightness of the intracluster medium which fills the cluster is strongly dependent on the density of the plasma. X-radiation (composed of X-rays) is a form of Electromagnetic radiation. The Chandra X-ray Observatory is a Satellite launched on STS-93 by NASA on July 23, 1999. In Astronomy, the intracluster medium (or ICM is the superheated gas present at the center of a Galaxy cluster.
External links
- The Perseus Cluster on the WikiSky: DSS2, SDSS, IRAS, Hidrogen α, X-Ray, Astrophoto, Sky Map
- Astronomy picture of the day (APOD) talking about sound waves in Perseus, earlier APOD
- Fabian, A. C. , et al. A deep Chandra observation of the Perseus cluster: shocks and ripples. Monthly Notices of the Royal Astronomical Society. Vol. 344 (2003): L43 (arXiv:astro-ph/0306036v2).
References
- The galaxy cluster Abell 426 (Perseus). A catalogue of 660 galaxy positions, isophotal magnitudes and morphological types, Brunzendorf, J. ; Meusinger, H. , Astronomy and Astrophysics Supplement, v. 139, p. 141-161, 1999.
- ^ a b c d e f NASA/IPAC Extragalactic Database. Results for Perseus Cluster. Retrieved on 2006-11-28. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. For the town in Argentina, see 28 de Noviembre. Events
- ^ Edge A. C. , Stewart G. C. , Fabian A. C. , Properties of cooling flows in a flux limited sample of clusters of galaxies, 1992, MNRAS, 258, 177
- ^ Fabian A. Monthly Notices of the Royal Astronomical Society (MNRAS is one of the world's leading Scientific journals in Astronomy and Astrophysics. C. , et al. , A Deep Chandra observation of the Perseus cluster: shocks and ripples, 2003, MNRAS, 344, L43
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