研究成果・発表論文

First Systematic Search for Oxygen-line Blobs at High Redshift: Uncovering AGN Feedback and Star Formation Quenching

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Yuma, Suraphong,   Ouchi, Masami,   Drake, Alyssa B.,   Simpson, Chris,   Shimasaku, Kazuhiro,   Nakajima, Kimihiko

We present the first systematic search for extended metal-line [O II] \ensuremathłambda\ensuremathłambda3726, 3729 nebulae, or [O II] blobs (O IIBs), at z = 1.2 using deep narrowband imaging with a survey volume of 1.9 × 10$^5$ Mpc$^3$ on the 0.62 de...

Transonic solutions of isothermal galactic winds in a cold dark matter halo

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Tsuchiya, Masami,   Mori, Masao,   Nitta, Shin-ya

We study fundamental properties of steady, spherically symmetric, isothermal galactic outflows in appropriate gravitational potential models. We aim at constructing a universal scale-free theory not only for galactic winds, but also for winds from cl...

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Hunting a Wandering Supermassive Black Hole in the M31 Halo Hermitage

Miki, Yohei,   Mori, Masao,   Kawaguchi, Toshihiro,   Saito, Yuriko

In the hierarchical structure formation scenario, galaxies enlarge through multiple merging events with less massive galaxies. In addition, the Magorrian relation indicates that almost all galaxies are occupied by a central supermassive black hole (S...

平成26年 3月   The Astrophysical Journal
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First Systematic Search for Oxygen-line Blobs at High Redshift: Uncovering AGN Feedback and Star Formation Quenching

Yuma, Suraphong,   Ouchi, Masami,   Drake, Alyssa B.,   Simpson, Chris,   Shimasaku, Kazuhiro,   Nakajima, Kimihiko

We present the first systematic search for extended metal-line [O II] \ensuremathłambda\ensuremathłambda3726, 3729 nebulae, or [O II] blobs (O IIBs), at z = 1.2 using deep narrowband imaging with a survey volume of 1.9 × 10$^5$ Mpc$^3$ on the 0.62 de...

平成25年 12月   The Astrophysical Journal
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Highly scalable implementation of an N-body code on a GPU cluster

Miki, Yohei,   Takahashi, Daisuke,   Mori, Masao

We have developed a highly optimized code for collisionless N-body calculations based on direct summation. Our new optimization hides the global memory access latency, and the resulting CUDA code has a peak performance of 1006.7 GFlop/s in single pre...

平成25年 9月  
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Transonic solutions of isothermal galactic winds in a cold dark matter halo

Tsuchiya, Masami,   Mori, Masao,   Nitta, Shin-ya

We study fundamental properties of steady, spherically symmetric, isothermal galactic outflows in appropriate gravitational potential models. We aim at constructing a universal scale-free theory not only for galactic winds, but also for winds from cl...

平成25年 7月   Monthly Notices of the Royal Astronomical Society