1.2k citations · 1.8k across the 30 of their papers we have counts for
29 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…
The ngVLA Band-4 Water Vapor Radiometry Concept
Tirupati Kumara Sridharan, Robert Lehmensiek, Yoshiharu Asaki
The ngVLA has adopted a standalone system with a ~1.5 m diameter antenna and associated ambient temperature receiver and electronics at each antenna as its baseline design fo…
Into the thick of it: ALMA 0.45 mm observations of HL Tau at 2 au resolution
Osmar M. Guerra-Alvarado, Carlos Carrasco-González, Enrique Macías +7
Aims. To comprehend the efficiency of dust evolution within protoplanetary disks, it is crucial to conduct studies of these disks using high-resolution observations at multiple wav…
ALMA High-frequency Long Baseline Campaign in 2021: Highest Angular Resolution Submillimeter Wave Images for the Carbon-rich Star R Lep
Yoshiharu Asaki, Luke T. Maud, Harold Francke +11
The Atacama Large Millimeter/submillimeter Array (ALMA) was used in 2021 to image the carbon-rich evolved star R Lep in Bands 8-10 (397-908 GHz) with baselines up to 16 km. The goa…
Updates to ALMA Site Properties: using the ESO-Allegro Phase RMS database -- ALMA Memo 624
Luke T. Maud, Andrés F. Pérez-Sánchez, Yoshiharu Asaki +3
We present a long-term overview of the atmospheric phase stability at the Atacama Large Millimeter/submillimeter Array (ALMA) site, using >5 years of data, that acts as the success…
The Transformational Power of Frequency Phase Transfer Methods for ngEHT
María J. Rioja, Richard Dodson, Yoshiharu Asaki
(Sub) mm VLBI observations are strongly hindered by limited sensitivity, with the fast tropospheric fluctuations being the dominant culprit. We predict great benefits from applying…