activity
20152022
most citedPrimordial Star Formation under the Influence of Far Ultraviolet Radiation: 1540 Cosmological Halos and the Stellar Mass Distribution

321 citations · 662 across the 9 of their papers we have counts for

collaborators

17 papers

astro-ph.GA202232 cited

FAUST III. Misaligned rotations of the envelope, outflow, and disks in the multiple protostellar system of VLA 16232417

Satoshi Ohashi, Claudio Codella, Nami Sakai +69

We report a study of the low-mass Class-0 multiple system VLA 1623AB in the Ophiuchus star-forming region, using HCO (), CS (), and CCH () lines as…

astro-ph.SR202110 cited

Impact of Magnetic Braking on High-mass Close Binary Formation

Naoto Harada, Shingo Hirano, Masahiro N. Machida +1

Combining numerical simulations and analytical modeling, we investigate whether close binary systems form by the effect of magnetic braking. Using magnetohydrodynamics simulations,…

astro-ph.GA202112 cited

Supermassive Star Formation in Magnetized Atomic-Cooling Gas Clouds: Enhanced Accretion, Intermittent Fragmentation, and Continuous Mergers

Shingo Hirano, Masahiro N. Machida, Shantanu Basu

The origin of supermassive black holes (with ) in the early universe (redshift ) remains poorly understood. Gravitational collapse of a massive…

astro-ph.SR2021

ALMA Observations toward the S-shaped Outflow and the Envelope around NGC1333 IRAS 4A2

Chen-Yu Chuang, Yusuke Aso, Naomi Hirano +2

We have analyzed the ALMA archival data of the SO ( and ), CO (), and CCH () lines from the class 0 protobinary system, NG…

astro-ph.CO2020

Large-scale variation in reionization history caused by Baryon-dark matter streaming velocity

Hyunbae Park, Paul R. Shapiro, Kyungjin Ahn +2

At cosmic recombination, there was supersonic relative motion between baryons and dark matter, which originated from the baryonic acoustic oscillations in the early universe. This…

astro-ph.SR202053 cited

The Effect of Misalignment between Rotation Axis and Magnetic Field on Circumstellar Disk

Shingo Hirano, Yusuke Tsukamoto, Shantanu Basu +1

The formation of circumstellar disks is investigated using three-dimensional resistive magnetohydrodynamic simulations, in which the initial prestellar cloud has a misaligned rotat…