PROFILPELAJAR.COM

PKS 2155-304
PKS 2155-304
	Image of PKS 2155-304 obtained in R band at ESO-NTT
Observation data (Epoch J2000)
Constellation	Piscis Austrinus
Right ascension	21h 58m 52.0651817803s
Declination	−30° 13′ 32.120657891″
Redshift	0.116
Distance	1.5 Gly
Type	BL Lac
Apparent magnitude (V)	13.09
Other designations
	QSO B2155-304,
	See also: Quasar, List of quasars

PKS 2155-304 is a BL Lac object, a galaxy hosting a type of blazar. It is a strong emitter from radio to high-energy frequencies.

PKS 2155-304 is at redshift z = 0.116 (Falomo, Pesce & Treves 1993)^{[full citation needed]}. It is one of the brightest and most studied BL Lacs, one of the first identified through X-ray observations.^[1]

References

^ Aharonian, F.; et al. (2007). "An Exceptional Very High Energy Gamma-Ray Flare of PKS 2155-304". The Astrophysical Journal. 664 (2): L71–L78. arXiv:0706.0797. Bibcode:2007ApJ...664L..71A. doi:10.1086/520635. S2CID 119319369.

This galaxy-related article is a stub. You can help Wikipedia by expanding it.

[1] Aharonian, F.; et al. (2007). "An Exceptional Very High Energy Gamma-Ray Flare of PKS 2155-304". The Astrophysical Journal. 664 (2): L71–L78. arXiv:0706.0797. Bibcode:2007ApJ...664L..71A. doi:10.1086/520635. S2CID 119319369.

[1]