Beaver galaxy

The Beaver galaxy is classified to be head-tail radio galaxy or alternatively, a narrow angle tail radio galaxy, positioned in the southern region away from the center of Abell 2255.^[2][4][5] When observed, the source is found to be extended over an area of 400 kiloparsecs with two regions of polarized emission located by 10 arcseconds west and northwest from the peak of the northern radio region, in the position angle of 90°.^[2] The tail feature of the Beaver galaxy has been described to have a long appearance and shown to drastically increase its length to around 1 megaparsec. It also exhibits signs of steepening of the spectral index indicating the electrons lost energy after being ejected from the host. The ages of the plasma of the tail end is estimated to be 2.2 × 10⁸ years.^[6][7]

Radio imaging made by Very Large Array (VLA), showed the presence of two radio jets bending backwards from the radio core of the Beaver galaxy.^[8] Evidence also found the inner regions of the jets displaying significant signs of polarization at 20 kiloparsecs from the core. However the eastern jet seems less polarized when imaged at 3.6 centimeters while the western jet is more polarized. The estimated fractional polarization of the eastern jet is 12% while the western jet has fractional polarization of 23%.^[9] Further radio observations also found both of the jets are shown closer to each other along the tail position, before subsequently forming a corkscrew feature. Observations at low frequencies, found the tail feature as twisted and fading away upon reaching the cluster radio emission halo.^[4]

• Beaver galaxy on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• Beaver galaxy on SIMBAD