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Akira Okumura

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Associate Professor

University of Tokyo

Japan

Research Interests

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Professors in Japan Professors in Astronomy Astronomy professors in Japan

About

Akira Okumura is a Junior Associate Professor at Nagoya University in Japan. His research interests include advancements in silicon photomultipliers, multi-channel digitization for imaging atmospheric Cherenkov telescopes, and the study of cosmic rays and the interstellar medium using gamma-ray observations. His recent publications reflect his commitment to exploring complex phenomena in astrophysics.

Recent Grants

Grant: Close

Improving the gamma-ray detection sensitivity of the Cherenkov Telescope Array to discover dark matter and Galactic PeVatrons

Open Date: 2018-01-01

Close Date: 2021-12-31

Grant: Close

Development of Ground-based Gamma-ray Telescopes for Galactic PeVatron Search

Open Date: 2017-04-01

Close Date: 2019-03-31

Grant: Close

大面積の半導体光検出器アレイの製造費用を半額にする非球面レンズアレイの開発

Open Date: 2016-04-01

Close Date: 2018-03-31

Grant: Close

R&D of an active mirror control system of the large telescope for the CTA project

Open Date: 2013-04-01

Close Date: 2016-03-31

Grant: Close

大気チェレンコフ光の収集効率改善による次世代ガンマ線望遠鏡CTAの高感度化

Open Date: 2013-04-01

Close Date: 2018-03-31

Articles (16)

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2024

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2020

Collaborators (50)

Joanna Ślot

University of Łódź

POLAND

Akira Okumura

Research Interests

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About

Recent Grants

Articles (16)

Very high-energy gamma-ray detection and long-term multiwavelength view of the flaring blazar B2 1811+31

Combined search in dwarf spheroidal galaxies for branon dark matter annihilation signatures with the MAGIC telescopes

Insights from the first flaring activity of a high synchrotron peaked blazar with X-ray polarization and VHE gamma rays

Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations

Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020

Cosmic-ray acceleration and escape from supernova remnant W44 as probed by Fermi-LAT and MAGIC

Multimodal shifts in the dark current of silicon photomultipliers

GRB 221009A: Observations with LST-1 of CTAO and Implications for Structured Jets in Long Gamma-Ray Bursts

Detection of the Geminga pulsar at energies down to 20 GeV with the LST-1 of CTAO

Galactic transient sources with the Cherenkov Telescope Array Observatory

Detection of RS Oph with LST-1 and modelling of its HE/VHE gamma-ray emission

Development and quality control of PMT modules for the large-sized telescopes of the Cherenkov Telescope Array Observatory

Very high energy observations of the Seyfert galaxy NGC 4151 with MAGIC Indication of another gamma-ray obscured candidate neutrino source

Competition between increasing and decreasing effects of the afterpulsing rate of PMTs during night-sky observations

CTC and CT5TEA: An advanced multi-channel digitizer and trigger ASIC for imaging atmospheric Cherenkov telescopes

Study of the Cosmic Rays and Interstellar Medium in Local H i Clouds Using Fermi-LAT Gamma-Ray Observations

Collaborators (50)

Joanna Ślot

Rafael Alves Batista

Rene Ong

Yoshiyuki Inoue

Teresa Montaruli

nicola giglietto

Lars Mohrmann

Juan Cortina

Marek Nikolajuk

Mykhailo Dalchenko

Tobias Kleiner

Hiroshi Akitaya

Ralf Kissmann

Andrea Chiavassa

Jonathan Granot

Lea Heckmann

Ramon J. Garcia Lopez

Sofia Kankkunen

Alexander Hahn

Takeshi Nakamori

Roland Walter

Tomasz Starecki

Anthony Brown

Harm Schoorlemmer

Luis Fariña

Davide Cerasole

Luis Del Peral

Gernot Maier

David Kieda

Manuel Delfino

Kohei Hayashi

Viviana Gammaldi

Mitsunari Takahashi

Timothy Greenshaw

Mose' Mariotti

Matthieu Heller

Manel Errando

Takayuki Saito

Isabel Marquez Perez

Marina Manganaro

Oibar Martínez Vílchez

Alberto Rosales de León

Matthias Kadler

Elisa Prandini

Jose Luis Contreras González

Domenico Della Volpe

Emma de Ona Wilhelmi

Tomohiro Inada

Wolfgang Rhode

Cornelia Hanna Esther Arcaro

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