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- Title
Planck revealed bulk motion of Centaurus A lobes.
- Authors
De Paolis, F.; Gurzadyan, V. G.; Nucita, A. A.; Ingrosso, G.; Kashin, A. L.; Khachatryan, H. G.; Mirzoyan, S.; Yegorian, G.; Jetzer, Ph.; Qadir, A.; Vetrugno, D.
- Abstract
Planck data towards the active galaxy Centaurus A are analyzed in the 70, 100 and 143 GHz bands. We find a temperature asymmetry of the northern radio lobe with respect to the southern one that clearly extends at least up to 5° from the Cen A center and diminishes towards the outer regions of the lobes. That transparent parameter - the temperature asymmetry - thus has to carry a principal information, i.e. indication on the line-of-sight bulk motion of the lobes, while the increase of that asymmetry at smaller radii reveals the differential dynamics of the lobes as expected at ejections from the center.
- Subjects
ACTIVE galaxies; PLANCK (Artificial satellite); CENTAURUS (Constellation); TEMPERATURE of stars; STELLAR radiation; STELLAR structure; GALACTIC dynamics; GALACTIC halos
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2015, Vol 580, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201526797