4 papers
Short timescale variation in the submillimeter flux of Sagittarius A*
Makoto Miyoshi, Yoshiaki Kato, Yoshiharu Asaki +8
We study short-timescale 340 GHz flux-density variability of Sgr A* using ALMA Cycle 3 observations. Careful self-calibration enabled 10 s snapshot imaging with very high effective…
Nuclear Stellar Disk-like Nature in the Kinematics of SiO Maser Stars around Sagittarius A*
Masato Tsuboi, Takahiro Tsutsumi, Ryosuke Miyawaki +1
We present a detailed analysis of the kinematics of SiO maser stars around the center of the Milky Way, Sagittarius A* (Sgr A*). We used the archive data in the SiO v=1, J=2-1 emis…
The jet and resolved features of the central supermassive black hole of M 87 observed with EHT in 2017 -- Comparison with the GMVA 86 GHz results
Makoto Miyoshi, Yoshiaki Kato, Junichiro Makino +1
M 87 is the best target for studying black hole accretion and jet formation. Reanalysis of the EHT public data at 230 GHz shows a core-knots structure at the center and jet feature…
A bright, dust-obscured, millimeter-selected galaxy beyond the Bullet Cluster (1E0657-56)
G. W. Wilson, D. Hughes, I. Aretxaga +24
Deep 1.1 mm continuum observations of 1E0657-56 (the "Bullet Cluster") taken with the millimeter-wavelength camera AzTEC on the 10-m Atacama Submillimeter Telescope Experiment (AST…