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Planck view of the M 82 galaxy


Gurzadyan, V G; De Paolis, F; Nucita, A A; Ingrosso, G; Kashin, A L; Khachatryan, H G; Sargsyan, S; Yegorian, G; Jetzer, P; Qadir, A; Vetrugno, D (2015). Planck view of the M 82 galaxy. Astronomy and Astrophysics, 582:A77.

Abstract

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 1deg. 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.

Abstract

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 1deg. 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.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:17 September 2015
Deposited On:12 Feb 2016 13:58
Last Modified:05 Apr 2016 20:03
Publisher:EDP Sciences
ISSN:0004-6361
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1051/0004-6361/201527132

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