Molecular Loops in the Galactic Center: Evidence for Magnetic Flotation-Reference-Cited by-同舟云学术

Molecular Loops in the Galactic Center: Evidence for Magnetic Flotation

Published:2006-10-06 Issue:5796 Volume:314 Page:106-109
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Fukui Yasuo¹²³⁴⁵,Yamamoto Hiroaki¹²³⁴⁵,Fujishita Motosuji¹²³⁴⁵,Kudo Natsuko¹²³⁴⁵,Torii Kazufumi¹²³⁴⁵,Nozawa Satoshi¹²³⁴⁵,Takahashi Kunio¹²³⁴⁵,Matsumoto Ryoji¹²³⁴⁵,Machida Mami¹²³⁴⁵,Kawamura Akiko¹²³⁴⁵,Yonekura Yoshinori¹²³⁴⁵,Mizuno Norikazu¹²³⁴⁵,Onishi Toshikazu¹²³⁴⁵,Mizuno Akira¹²³⁴⁵

Affiliation:

1. Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan.

2. Department of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.

3. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.

4. The Graduate University for Advanced Studies, Hayama, Miura, Kanagawa, 240-0193, Japan.

5. Department of Physics, Faculty of Science, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.

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 12 CO (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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference27 articles.

1. Large, highly organized radio structures near the galactic centre

2. THE GALACTIC CENTER ENVIRONMENT

3. Evidence of a Weak Galactic Center Magnetic Field from Diffuse Low-Frequency Nonthermal Radio Emission

4. Magnetic Fields in Cool Clouds within the Central 50 Parsecs of the Galaxy

5. Polarization of the far-infrared emission from the thermal filaments of the Galactic center arc

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