arxiv: 1509.05212 · v1 · pith:44WDTGZ6new · submitted 2015-09-17 · 🌌 astro-ph.GA

Planck view of the M82 galaxy

V.G. Gurzadyan , F. De Paolis , A.A. Nucita , G. Ingrosso , A.L. Kashin , H.G. Khachatryan , S. Sargsyan , G. Yegorian

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Ph. Jetzer A. Qadir D. Vetrugno

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keywords galaxytemperatureasymmetrycenterdynamicseffectgalacticgalaxies

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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.

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Planck view of the M82 galaxy

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