Planck data towards the galaxy M 82 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° 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 M 81 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.

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, Ph.; Qadir, A.; Vetrugno, D.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 582:(2015), p. A77. [10.1051/0004-6361/201527132]

Planck view of the M 82 galaxy

Vetrugno D.
2015-01-01

Abstract

Planck data towards the galaxy M 82 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° 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 M 81 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.
2015
Gurzadyan, V. G.; De Paolis, F.; Nucita, A. A.; Ingrosso, G.; Kashin, A. L.; Khachatryan, H. G.; Sargsyan, S.; Yegorian, G.; Jetzer, Ph.; Qadir, A.; Vetrugno, D.
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, Ph.; Qadir, A.; Vetrugno, D.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 582:(2015), p. A77. [10.1051/0004-6361/201527132]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/269475
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