Planck view of the M 82 galaxy
| Autor: | Asghar Qadir, S. Sargsyan, Daniele Vetrugno, A. L. Kashin, F. De Paolis, Vahe Gurzadyan, G. Yegorian, Ph. Jetzer, H. G. Khachatryan, A. A. Nucita, G. Ingrosso |
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| Přispěvatelé: | Gurzadyan, V. G., DE PAOLIS, Francesco, Nucita, Achille, Ingrosso, Gabriele, Kashin, A. L., Khachatryan, H. G., Sargsyan, S., Yegorian, G., Jetzer, P. h., Qadir, A., Vetrugno, Daniele |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Spiral galaxy media_common.quotation_subject Galactic Center FOS: Physical sciences Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies Asymmetry Galaxy symbols.namesake Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) symbols Halo Planck Astrophysics::Galaxy Astrophysics media_common general [galaxies] |
| Popis: | Planck data towards the galaxy M82 are analyzed in the 70, 100 and 143 GHz bands. A substantial north-south and East-West temperature asymmetry is found, extending up to 1 degree from the galactic center. Being almost frequency-independent, these temperature asymmetries are indicative of a Doppler-induced effect regarding the line-of-sight dynamics on the halo scale, the ejections from the galactic center and, possibly, even the tidal interaction with M81 galaxy. The temperature asymmetry thus acts as a model-independent tool to reveal the bulk dynamics in nearby edge-on spiral galaxies, like the Sunyaev-Zeldovich effect for clusters of galaxies. 4 pages, 3 figures, in press on A&A |
| Databáze: | OpenAIRE |
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