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Akihiko Hirota

助教/Assistant Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

Japan

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Research Interests

Astrophysics

60%

Astronomy

50%

Time-domain Astronomy

30%

Multiwavelength Astronomy

30%

Ionospheric Physics

30%

Frequency Metrology

20%

Radio Astronomy

20%

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Articles9

Dynamically Driven Evolution of Molecular Gas in the Barred Spiral Galaxy M83 Traced by CO J = 2–1/1–0 Line Ratio Variations

Article Link

Year:

2025

ALMA FACTS. II. Large Scale Variations in the 12CO(J = 2 – 1) to 12CO(J = 1 – 0) Line Ratio in Nearby Galaxies

Article Link

Year:

2025

The CO-to-H2 Conversion Factor in the Barred Spiral Galaxy M83

Article Link

Year:

2024

Whole-disk Sampling of Molecular Clouds in M83

Article Link

Year:

2024

ALMA High-frequency Long-baseline Campaign in 2019: Band 9 and 10 In-band and Band-to-band Observations Using ALMA’s Longest Baselines

Article Link

Year:

2023

Diverse Molecular Structures across the Whole Star-forming Disk of M83: High-fidelity Imaging at 40 pc Resolution

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Year:

2023

ALMA High-frequency Long-baseline Campaign in 2017: An Investigation of Phase-referencing Cycle Times and Effective Baseline Lengths Using Band-to-band and In-band Phase Calibration Techniques

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Year:

2022

ALMA High-frequency Long-baseline Campaign in 2017: A Comparison of the Band-to-band and In-band Phase Calibration Techniques and Phase-calibrator Separation Angles

Article Link

Year:

2020

ALMA Band-to-band Phase Referencing: Imaging Capabilities on Long Baselines and High Frequencies

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Year:

2020

Collaborators8

Neil Phillips

European Southern Observatory

GERMANY

Fumi Egusa

University of Tokyo

JAPAN

Takafumi Tsukui

Australian National University

AUSTRALIA

Satoko Takahashi

准教授/Associate Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

Mark Heyer

Research Professor

University of Massachusetts Boston

UNITED STATES

Yoshiharu Asaki

准教授/Associate Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

Hiroshi Nagai

准教授/Associate Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

Tsuyoshi Sawada

准教授/Associate Professor

自然科学研究機構国立天文台/National Astronomical Observatory of Japan

JAPAN

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