HAGIWARA YOSHIAKI 萩原喜昭

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HAGIWARA Yoshiaki 萩原喜昭

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Researcher Number	60399300
Other IDs
Affiliation (Current)	2025: 東洋大学, 文学部, 教授
Affiliation (based on the past Project Information) *help	2025: 東洋大学, 文学部, 教授 2018 – 2021: 東洋大学, 文学部, 教授 2015 – 2017: 東洋大学, 文学部, 准教授 2012 – 2014: 国立天文台, 水沢VLBI観測所, 助教
Review Section/Research Field	Principal Investigator Basic Section 16010:Astronomy-related / Astronomy Except Principal Investigator Basic Section 16010:Astronomy-related / Astronomy
Keywords	Principal Investigator 超巨大ブラックホール / 活動銀河核 / 高分解能電波イメージング / メーザー / 高密度分子ガス / 電波ジェット / 電波天文 / 天文 / 偏波・偏光 / 天体磁場 … More / 電波天文学 / 天文学 / VLBI / 電波干渉計 / 磁場構造 / 磁場 / ジェット / ブラックホール … More Except Principal Investigator 活動銀河核 / ジェット / VLBI / 電波天文学 / ブラックホール / 位置天文 / 位置天文学 / 降着円盤 / 電波 / 位相補償 / 電波干渉計 / 干渉計 / 天文学 / 銀河 / 活動銀河 Less

Towards a precise determination of Super-massive Black Hole Mass and the Hubble Constant Using Submillimeter MegamasersPrincipal Investigator
- Principal Investigator
  
  萩原喜昭
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 16010:Astronomy-related
- Research Institution
  Toyo University
Probing magnetic fields of supermassive black-hole jets with next-generation international VLBI networks
- Principal Investigator
  
  Hada Kazuhiro
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 16010:Astronomy-related
- Research Institution
  National Astronomical Observatory of Japan
Approaching the creation mechanism of black hole jet using mm-VLBI polarimetryPrincipal Investigator
- Principal Investigator
  
  Hagiwara Yoshiaki
- Project Period (FY)
  2015 – 2018
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Astronomy
- Research Institution
  Toyo University
Precise measurements of black holes for studies of active galactic nuclei
- Principal Investigator
  
  DOI AKIHIRO
- Project Period (FY)
  2012 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Astronomy
- Research Institution
  Japan Aerospace EXploration Agency

All 2019 2018 2017 2016 2015 2013 2012 Other

All Journal Article Presentation

[Journal Article] East Asian VLBI Network - Evolution and Future of EAVN2019
- Author(s)
  Yoshiaki Hagiwara
- Journal Title
  
  東洋大学紀要自然科学篇
  
  Volume: 63 Pages: 47-55
- NAID
  120006621787
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Extragalactic Astronomical Masers - Recent results of sub-millimeter maser observations2019
- Author(s)
  Yoshiaki Hagiwara
- Journal Title
  
  東洋大学文学部紀要　第72集国際文化コミュニケーション研究
  
  Volume: 2 Pages: 111-119
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Searches for H2O Masers toward Narrow-Line Seyfert 1 galaxies2018
- Author(s)
  Yoshiaki Hagiwara, Akihiro DOi, Kazuya Hachisuka, Shinji Horiuchi
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: - Issue: 3
- DOI
  10.1093/pasj/psy046
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Space VLBI Astronomy: Current Status and Future Prospects2018
- Author(s)
  Yoshiaki Hagiwara
- Journal Title
  
  JOURNAL OF TOYO UNIVERSITY NATURAL SCIENCE
  
  Volume: 62 Pages: 33-42
- NAID
  120006453636
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Submillimeter Continuum Emission of Active Galactic Nuclei2017
- Author(s)
  Hagiwara, Yoshiaki
- Journal Title
  
  東洋大学紀要自然科学篇
  
  Volume: 61 Pages: 79-87
- NAID
  120006029239
- Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Extragalactic Astronomical Masers II2017
- Author(s)
  Hagiwara, Yoshiaki
- Journal Title
  
  東洋大学紀要, dialogos, 文学部英語コミュニケーション学科篇
  
  Volume: 17 Pages: 105-114
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Pilot KaVA monitoring on the M 87 jet: Confirming the inner jet structure and superluminal motions at sub-pc scales2017
- Author(s)
  Hada, Kazuhiro; Sawada-Satoh, Satoko (15番目); 他(計40名)
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 69 Issue: 4 Pages: 71-80
- DOI
  10.1093/pasj/psx054
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H02167, KAKENHI-PROJECT-17H01116, KAKENHI-PROJECT-15H03644
[Journal Article] A Search for Submillimeter H2O Masers in Active Galaxies: The Detection of 321 GHZ H2O Maser Emission in NGC 49452016
- Author(s)
  Hagiwara, Y., Horiuchi, S., Doi, A., Miyoshi, M., Edwards, P. G.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 827 Issue: 1 Pages: 69-69
- DOI
  10.3847/0004-637x/827/1/69
- Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644, KAKENHI-PROJECT-24340042
[Journal Article] High-sensitivity 86GHz(3.5mm) VLBI observations of M87: Deep imaging of the jet base at a resolution of 10 Schwarzschild radii2016
- Author(s)
  Hada, K., Kino, M., Doi, A., Nagai, H., Honma, M., Akiyama, K., Tazaki, F., Lico, R., Giroletti, M., Giovannini, G., Orienti, M., Hagiwara, Y.,
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 817 Issue: 2 Pages: 131-147
- DOI
  10.3847/0004-637x/817/2/131
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PLANNED-25120007
[Journal Article] Water Vapour Maser Emission in the Type 2 Seyfert Galaxy NGC 10682016
- Author(s)
  Hagiwara, Y.
- Journal Title
  
  東洋大学紀要自然科学篇
  
  Volume: 60 Pages: 67-75
- NAID
  120005820156
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] A Fanaroff-Riley Type I Candidate in Narrow-Line Seyfert 1 Galaxy Mrk 12392015
- Author(s)
  Doi, Akihiro; Wajima, Kiyoaki; Hagiwara, Yoshiaki; Inoue, Makoto
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 798 Issue: 2 Pages: L30-L30
- DOI
  10.1088/2041-8205/798/2/l30
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-24340042
[Journal Article] ALMA Multi-line Observations of the IR-bright Merger VV 1142015
- Author(s)
  Saito, Toshiki; Iono, Daisuke; Yun, Min S.; Ueda, Junko; Nakanishi, Kouichiro; Sugai, Hajime; Espada, Daniel; Imanishi, Masatoshi; Motohara, Kentaro; Hagiwara, Yosiaki; Tateuchi, Ken; Lee, Minju; Kawabe, Ryohei
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 803 Issue: 2 Pages: 60-93
- DOI
  10.1088/0004-637x/803/2/60
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-15K05030, KAKENHI-PROJECT-14J08134, KAKENHI-PROJECT-23540273, KAKENHI-PLANNED-24103003, KAKENHI-PROJECT-15H02062, KAKENHI-PROJECT-15H02073
[Journal Article] High-resolution Imaging of Water Maser Emission in the Active Galaxies NGC 6240 and M512015
- Author(s)
  Hagiwara, Y., Edwards, P. G.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 815 Issue: 2 Pages: 124-129
- DOI
  10.1088/0004-637x/815/2/124
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] Current Status of the EAVN Experiments2015
- Author(s)
  Hagiwara, Y., An, T., Jung, T., Rho, D.-G., Zhang, M., Hao, L., Fujisawa, K., Yonekura, Y., Baan, W., Kim, J., Kobayashi, H.
- Journal Title
  
  Publications of The Korean Astronomical Society
  
  Volume: 30 Pages: 641-643
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Journal Article] VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability2015
- Author(s)
  Niinuma, Kotaro; Lee, Sang-Sung; Kino, Motoki; Sohn, Bong Won; Akiyama, Kazunori et al.
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 66 Issue: 6 Pages: 103-118
- DOI
  10.1093/pasj/psu104
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-12J07566, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540242, KAKENHI-PROJECT-26800109, KAKENHI-PLANNED-25120007
[Journal Article] The Innermost Collimation Structure of the M87 Jet Down to ~10 Schwarzschild Radii2013
- Author(s)
  Hada, K., Kino, M., Doi, A., Nagai, H., Honma, M., Hagiwara, Y., Giroletti, M., Giovannini, G., Kawaguchi, N.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 775 Issue: 1 Pages: 70-76
- DOI
  10.1088/0004-637x/775/1/70
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-24540242, KAKENHI-PLANNED-25120007
[Journal Article] Submillimeter H2O Maser in Circinus Galaxy―a New Probe for the Circumnuclear Region of Active Galactic Nuclei2013
- Author(s)
  Hagiwara, Yoshiaki; Miyoshi, Makoto; Doi, Akihiro; Horiuchi, Shinji
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: Volume 768, Issue 2 Issue: 2 Pages: L38-L38
- DOI
  10.1088/2041-8205/768/2/l38
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340042
[Journal Article] Active Galactic Nucleus and Extended Starbursts in a Midstage Merger VV 1142013
- Author(s)
  Iono, Daisuke; Saito, Toshiki; Yun, Min S.; Kawabe, Ryohei; Espada, Daniel; Hagiwara, Yoshiaki; Imanishi, Masatoshi; Izumi, Takuma; Kohno, Kotaro; Motohara, Kentaro; Nakanishi, Kouichiro; Sugai, Hajime; Tateuchi, Ken; Tamura, Yoichi; Ueda, Junko; Yoshii, Yuzuru
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: Vol.65, No.3
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340042
[Journal Article] Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies2013
- Author(s)
  Doi, Nagai, Hagiwara, et al
- Journal Title
  
  Astrophysical Journal
  
  Volume: 765 Issue: 1 Pages: 69-69
- DOI
  10.1088/0004-637x/765/1/69
- NAID
  120005373241
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340042
[Journal Article] VLBI Observations of the Jet in M 87 during the Very High Energy y-Ray Flare in 2010 April2012
- Author(s)
  Hada, Kino, Nagai, Doi, Hagiwara, et al.
- Journal Title
  
  Astrophysical Journal
  
  Volume: 760 Issue: 1 Pages: 52-57
- DOI
  10.1088/0004-637x/760/1/52
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-24540242
[Presentation] 日韓VLBI による、43GHz帯偏波 VLBI試験観測経過報告及び活動銀河核ジェット収束機構の研究2019
- Author(s)
  萩原喜昭、河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、松枝知佳 (国立天文台)、藤沢健太、新沼浩太郎 (山口大)、嶺重慎 (京都大)、米倉覚則 (茨城大)、笹田真人 (広島大)
- Organizer
  日本天文学会2019年春季年会
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] VERA43GHz帯両偏波化とKaVA偏波試験観測の進捗状況2018
- Author(s)
  萩原喜昭、科研費研究チーム(河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、藤澤健太、新沼浩太郎、米倉覚則、笹田真人)
- Organizer
  2018年度VLBI懇談会シンポジウム
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] VERA 43GHz帯用両偏波受信システムの開発と活動銀河核ジェットの生成・収束機構の研究2018
- Author(s)
  萩原喜昭、河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、松枝知佳 (国立天文台)、藤澤健太、新沼浩太郎 (山口大)、嶺重慎 (京都大)、米倉覚則 (茨城大)、笹田真人 (広島大)
- Organizer
  日本天文学会2018年秋季年会
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] High-resolution imaging of H2O maser towards the type 2 Seyfert NGC1068 (ポスター発表)2017
- Author(s)
  Yoshiaki Hagiwara
- Organizer
  日本天文学会2017年春季年会
- Place of Presentation
  九州大学伊都キャンパス (福岡市)
- Year and Date
  2017-03-15
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] Probing Circumnuclear Region of AGNs with Masers2017
- Author(s)
  Yoshiaki Hagiwara
- Organizer
  ALMA Long Baseline Workshop
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] Probing circumnuclear region of AGN with masers2017
- Author(s)
  Yoshiaki Hagiwara
- Organizer
  Black Hole Astrophysics with VLBI:Past, Present, and Future
- Place of Presentation
  国立天文台 (三鷹市)
- Year and Date
  2017-03-27
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] Recent VLBI Activities in East Asia2016
- Author(s)
  Yoshiaki Hagiwara
- Organizer
  マックスプランク研究所 VLBI セミナー
- Place of Presentation
  マックスプランク研究所電波天文学、Bonn、ドイツ連邦共和国
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 43GHz 帯VERA両偏波化の現状 (口頭発表)2016
- Author(s)
  萩原喜昭
- Organizer
  2016年VLBI懇談会シンポジウム
- Place of Presentation
  山口大学吉田キャンパス大学会館
- Year and Date
  2016-12-27
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 水沢・入来局43GHz帯受信機両偏波化に向けて（口頭発表）2015
- Author(s)
  萩原喜昭 (東洋大学)
- Organizer
  2015年VLBI懇談会シンポジウム
- Place of Presentation
  東洋大学白山キャンパス
- Year and Date
  2015-12-24
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 活動銀河におけるサブミリ波帯 H2O メーザー探査 II（口頭発表）2015
- Author(s)
  萩原喜昭 (東洋大学)
- Organizer
  日本天文学会2015年秋季年会
- Place of Presentation
  甲南大学岡本キャンパス（兵庫県）
- Year and Date
  2015-09-09
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 活動銀河におけるサブミリ波帯 H2O メーザー探査 II2015
- Author(s)
  萩原喜昭, 堀内真司, 土居明広, 三好真
- Organizer
  日本天文学会2015年秋季年会
- Place of Presentation
  甲南大学
- Year and Date
  2015-09-09
- Data Source
  KAKENHI-PROJECT-24340042
[Presentation] 多周波VLBIによる電波銀河M87の中心エンジン近傍10-100シュバルツシルト半径領域におけるジェット形状探査2012
- Author(s)
  秦和弘,紀基樹,永井洋,土居明広,萩原喜昭
- Organizer
  日本天文学会秋季年会
- Place of Presentation
  大分大学
- Year and Date
  2012-09-19
- Data Source
  KAKENHI-PROJECT-24340042
[Presentation] VLBA+GBT＠86GHzによるM87ジェット生成領域の高分解能・高解像度
- Author(s)
  秦和弘, 紀基樹, 永井洋, 本間希樹, 秋山和徳, 田崎文得, 萩原喜昭, 土居明広, G.Giovannini, M.Giroletti
- Organizer
  日本天文学会
- Place of Presentation
  国際基督教大学
- Year and Date
  2015-03-19 – 2015-03-22
- Data Source
  KAKENHI-PROJECT-24340042

1. HADA KAZUHIRO (60724458)

# of Collaborated Projects: 2 results

# of Collaborated Products: 4 results
2. SASADA MAHITO (10725352)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
3. DOI AKIHIRO (90403641)

# of Collaborated Projects: 1 results

# of Collaborated Products: 8 results
4. OYAMA TOMOAKI (70425403)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
5. HONMA MAREKI (20332166)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
6. YONEKURA YOSHINORI (90305665)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
7. MINESHIGE SHIN (70229780)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
8. NIINUMA KOTARO (30434260)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
9. 永井洋 (00455198)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
10. 紀基樹 (70531234)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
11. 河野裕介 (00370106)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
12. 藤澤健太 (70311181)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. 田崎文得 (10800609)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. SUZUKI SYUNSAKU

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
15. GIOVANNINI Gabriele

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
16. 藤沢健太

# of Collaborated Projects: 0 results

# of Collaborated Products: 4 results

HAGIWARA YOSHIAKI 萩原 喜昭

HAGIWARA Yoshiaki 萩原 喜昭

Research Projects

Research Products

Co-Researchers

Towards a precise determination of Super-massive Black Hole Mass and the Hubble Constant Using Submillimeter MegamasersPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Probing magnetic fields of supermassive black-hole jets with next-generation international VLBI networks

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Approaching the creation mechanism of black hole jet using mm-VLBI polarimetryPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Precise measurements of black holes for studies of active galactic nuclei

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] East Asian VLBI Network - Evolution and Future of EAVN2019

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Extragalactic Astronomical Masers - Recent results of sub-millimeter maser observations2019

Author(s)

Journal Title

Data Source

[Journal Article] Searches for H2O Masers toward Narrow-Line Seyfert 1 galaxies2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Space VLBI Astronomy: Current Status and Future Prospects2018

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Submillimeter Continuum Emission of Active Galactic Nuclei2017

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Extragalactic Astronomical Masers II2017

Author(s)

Journal Title

Data Source

[Journal Article] Pilot KaVA monitoring on the M 87 jet: Confirming the inner jet structure and superluminal motions at sub-pc scales2017

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A Search for Submillimeter H2O Masers in Active Galaxies: The Detection of 321 GHZ H2O Maser Emission in NGC 49452016

Author(s)

Journal Title

DOI

Data Source

[Journal Article] High-sensitivity 86GHz(3.5mm) VLBI observations of M87: Deep imaging of the jet base at a resolution of 10 Schwarzschild radii2016

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Water Vapour Maser Emission in the Type 2 Seyfert Galaxy NGC 10682016

Author(s)

Journal Title

NAID

Data Source

[Journal Article] A Fanaroff-Riley Type I Candidate in Narrow-Line Seyfert 1 Galaxy Mrk 12392015

Author(s)

Journal Title

HAGIWARA YOSHIAKI 萩原喜昭

HAGIWARA Yoshiaki 萩原喜昭