Molecular loops in the galactic center: Evidence for magnetic flotation

Yasuo Fukui, Hiroaki Yamamoto, Motosuji Fujishita, Natsuko Kudo, Kazufumi Torii, Satoshi Nozawa, Kunio Takahashi, Ryoji Matsumoto, Mami Machida, Akiko Kawamura, Yoshinori Yonekura, Norikazu Mizuno, Toshikazu Onishi, Akira Mizuno

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

The central few hundred parsecs of the Milky Way host a massive black hole and exhibit very violent gas motion and high temperatures in molecular gas. The origin of these properties has been a mystery for the past four decades. Wide-field imaging of the 12CO (rotational quantum number J = 1 to 0) 2.6-millimeter spectrum has revealed huge loops of dense molecular gas with strong velocity dispersions in the galactic center. We present a magnetic flotation model to explain that the formation of the loops is due to magnetic buoyancy caused by the Parker instability. The model has the potential to offer a coherent explanation for the origin of the violent motion and extensive heating of the molecular gas in the galactic center.

Original languageEnglish
Pages (from-to)106-109
Number of pages4
JournalScience
Volume314
Issue number5796
DOIs
Publication statusPublished - Oct 6 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General

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