562 citations · 2.8k across the 51 of their papers we have counts for
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Multiple protostellar outflows from a single protostar with a misaligned disk
Shingo Hirano, Yuri Aikawa, Masahiro N. Machida
We investigate how misalignment between the core angular momentum and the large-scale magnetic field affects protostellar outflows, and whether a single protostellar system can dri…
Effect of Magnetic Field on the Accretion Phase of Population III Star Formation
Masahiro N. Machida, Shingo Hirano, Shantanu Basu
We examine the impact of the magnetic field on Population III star formation by varying the magnetic field strength. We perform simulations with magnetic field strengths ranging fr…
Velocity Structure of Circumstellar Environment around Class 0/I Protostars: Uncertainty in the Protostellar Mass Estimation Using Circumstellar Velocities
Shingo Hirano, Yuri Aikawa, Masahiro N. Machida
Recent high-resolution observations have enabled detailed investigations of the circumstellar environments around Class 0/I protostars. Several studies have reported that the infal…
Magnetic Effects Promote Supermassive Star Formation in Metal-enriched Atomic-cooling Halos
Shingo Hirano, Masahiro N. Machida, Shantanu Basu
Intermediate-mass black holes (with ) are promising candidates for the origin of supermassive black holes (with ) in the early universe (r…
Chemical and Physical Characterization of the Isolated Protostellar Source CB68: FAUST. IV
Muneaki Imai, Yoko Oya, Brian Svoboda +1
Chemical diversity of low-mass protostellar sources has so far been recognized, and environmental effects are invoked as its origin. In this context, observations of isolated proto…
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,…
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…
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…
Misalignment of Magnetic Fields, Outflows and Discs in Star-forming Clouds
Masahiro N. Machida, Shingo Hirano, Hideyuki Kitta
Using resistive magnetohydrodynamics simulations, the propagation of protostellar jets, the formation of circumstellar discs and the configuration of magnetic fields are investigat…
Origin of Misalignments: Protostellar Jet, Outflow, Circumstellar Disc, and Magnetic Field
Shingo Hirano, Masahiro N. Machida
Recent observations uncover various phenomena around the protostar such as misalignment between the outflow and magnetic field, precession of the jet, and time variability of the e…