Signature of an intermediate-mass black hole in the central molecular zone of our galaxy

Tomoharu Oka, Reiko Mizuno, Kodai Miura, Shunya Takekawa

研究成果: Article査読

抄録

The high-velocity compact cloud CO-0.40-0.22 was mapped in 22 molecular lines with the NRO 45 m radio telescope and the ASTE 10 m telescope. The map of each detected line shows that this cloud has a compact appearance (d≃3 pc) and extremely broad velocity width (Δ V≃100 km s-1). The representative position-velocity map along the major axis shows that CO-0.40-0.22 consists of an intense region with a shallow velocity gradient and a less intense high-velocity wing. This kinematical structure can be attributed to a gravitational kick to the molecular cloud caused by an invisible compact object with a mass of ∼105 M. Its compactness and the absence of a counterpart at other wavelengths suggest that this massive object is an intermediate-mass black hole.

本文言語English
ページ(範囲)119-122
ページ数4
ジャーナルProceedings of the International Astronomical Union
11
DOI
出版ステータスPublished - 2016

ASJC Scopus subject areas

  • 医学(その他)
  • 天文学と天体物理学
  • 栄養および糖尿病
  • 公衆衛生学、環境および労働衛生
  • 宇宙惑星科学

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