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, Ph. Jetzer, A. Qadir, D. Vetrugno
TL;DR
This study uses Planck data to detect temperature asymmetries in the M82 galaxy, revealing insights into its halo dynamics and potential interactions with neighboring galaxies through a model-independent approach.
Contribution
It introduces a novel application of temperature asymmetry analysis as a tool to study galaxy halo dynamics and interactions, independent of specific models.
Findings
Detected significant temperature asymmetries up to 1 degree from the galactic center.
Asymmetries are frequency-independent, indicating a Doppler effect related to galaxy dynamics.
Suggests possible tidal interactions with M81 galaxy.
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 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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