Tsukuba Uchu Forum

147th Uchu Forum

Star formation induced by cloud-cloud collisions in nearby barred galaxies

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Yoshiomasa Watanabe

Sibaura Institute of Technology

More than 300 molecular species have been identified in the interstellar matter. These chemical compositions provide various insights into the physical condition of molecular gas, its surrounding environment, and its evolution in the star and planet formation studies in the Galaxy. Thanks to the recent high sensitivity and high spatial...

146th Uchu Forum

Formation of intermediate-mass black hole in forming star clusters

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Michiko Fujii

The University of Tokyo

The existence of intermediate-mass black holes (IMBHs) in globular clusters has been debated. One possible way to form IMBHs in globular clusters is by repeating the merger of BHs in star clusters. However, gravitational-wave recoils kick the IMBHs out from the host globular clusters before they reach 500 Msun. Another...

145th Uchu Forum

Volume density structure of the NGC 253 CMZ through ALCHEMI excitation analysis: what is the critical difference between NGC253 and Milky Way?

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Kunihiko Tanaka

Keio University

NGC 253 is an archetypal starburst galaxy in the nearby universe, whose relative proximity (D ~ 3.5 Mpc) makes it an ideal target for studying the physical and chemical environments conducive to highly active star formation (SF). In particular, its similarity to the Milky Way (MW), traditionally understood as a quiescent...

144th Uchu Forum

すばる広視野サーベイとJWSTで見えてきた遠方超巨大ブラックホールの初期成長

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Masafusa Onoue

Kavli IPMU

We present the latest observations of the early growth of active supermassive black holes (=quasars) in the early Universe, less than a billion years after the Big Bang, mainly using the Subaru Telescope and the James Webb Space Telescope (JWST). The search for distant quasars has been active since the...

143rd Uchu Forum

磁気トルネード現象に注目した,太陽コロナ加熱のためのエネルギー発生・輸送・散逸の数値的研究

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Hidetaka Kuniyoshi

University of Tokyo

The outermost atmosphere of the Sun (the corona) reaches temperatures hundreds of times hotter than its surface (the photosphere), exceeding 1 million degrees. This issue of solar corona heating has been an unresolved problem since the 1930s and is a main target of the SOLAR-C mission. Furthermore, the solar corona...

147th Uchu Forum

Image

Star formation induced by cloud-cloud collisions in nearby barred galaxies

Yoshiomasa Watanabe

Sibaura Institute of Technology

More than 300 molecular species have been identified in the interstellar matter. These chemical compositions provide various insights into the physical condition of molecular gas, its surrounding environment, and its evolution in the star and planet formation studies in the Galaxy. Thanks to the recent high sensitivity and high spatial...

September 2024   15 : 30     star formation, barred galaxy, and interstellar molecules
146th Uchu Forum

Image

Formation of intermediate-mass black hole in forming star clusters

Michiko Fujii

The University of Tokyo

The existence of intermediate-mass black holes (IMBHs) in globular clusters has been debated. One possible way to form IMBHs in globular clusters is by repeating the merger of BHs in star clusters. However, gravitational-wave recoils kick the IMBHs out from the host globular clusters before they reach 500 Msun. Another...

July 2024   15 : 30     black holes, massive stars, and star formation
145th Uchu Forum

Image

Volume density structure of the NGC 253 CMZ through ALCHEMI excitation analysis: what is the critical difference between NGC253 and Milky Way?

Kunihiko Tanaka

Keio University

NGC 253 is an archetypal starburst galaxy in the nearby universe, whose relative proximity (D ~ 3.5 Mpc) makes it an ideal target for studying the physical and chemical environments conducive to highly active star formation (SF). In particular, its similarity to the Milky Way (MW), traditionally understood as a quiescent...

June 2024   15 : 30     ALMA, starbursts, and Galactic center
144th Uchu Forum

Image

すばる広視野サーベイとJWSTで見えてきた遠方超巨大ブラックホールの初期成長

Masafusa Onoue

Kavli IPMU

We present the latest observations of the early growth of active supermassive black holes (=quasars) in the early Universe, less than a billion years after the Big Bang, mainly using the Subaru Telescope and the James Webb Space Telescope (JWST). The search for distant quasars has been active since the...

May 2024   15 : 30     SMBH, James Webb telescope, and early universe
143rd Uchu Forum

Image

磁気トルネード現象に注目した,太陽コロナ加熱のためのエネルギー発生・輸送・散逸の数値的研究

Hidetaka Kuniyoshi

University of Tokyo

The outermost atmosphere of the Sun (the corona) reaches temperatures hundreds of times hotter than its surface (the photosphere), exceeding 1 million degrees. This issue of solar corona heating has been an unresolved problem since the 1930s and is a main target of the SOLAR-C mission. Furthermore, the solar corona...

April 2024   15 : 30     Solar Corona, MHD, and SOLAR-C