Observational Studies of the active galactic nuclei with rapidly growing black holes by direct imaging using VLBI

• Project/Area Number: 21540250
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Astronomy
• Research Institution: Japan Aerospace Exploration Agency
• Principal Investigator: DOI Akihiro 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (90403641)
• Co-Investigator(Kenkyū-buntansha): NAGAI Hiroshi 国立天文台, ALMA推進室, 研究員 (00455198)
• Co-Investigator(Renkei-kenkyūsha): FUJISAWA Kenta 山口大学, 時間学研究所, 教授 (70311181)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: ブラックホール / 活動銀河核 / ジェット / アウトフロー / VLBI / 電波 / 天文 / 銀河 / 観測技術

Research Abstract

We conducted the first systematic VLBI studies of broad-absorption line quasars and narrow-line Seyfert1galaxies, which are believed to be driven by rapidly growing supermassive black holes. Our unique approach from radio observations at unprecedented angular resolutions has provided very crucial results about the vicinity of these black hole systems. The results impact the current pictures of relativistic jets, outflows, and their inclinations and ages of active galactic nuclei on an evolutionary phase.

Research Products

• [Journal Article] Millimeter Radio Continuum Emissions as the Activity of Supermassive Black Holes in Nearby Early-type Galaxies and Low-luminosity Active Galactic Nuclei (2011)
  • Author(s): Doi, A., et al.
  • Journal Title: The Astronomical Journal Volume: 142 Issue: 5 Pages: 167-167
  • DOI: 10.1088/0004-6256/142/5/167
  • Peer Reviewed
• [Journal Article] Very Long Baseline Array Imaging of Parsec? scale Jet Structures in Radio-loud Narrow-line Seyfert1Galaxies (2011)
  • Author(s): Doi, Asada, Nagai
  • Journal Title: ApJ Volume: Vol.738 Issue: 2 Pages: 126-126
  • DOI: 10.1088/0004-637x/738/2/126
  • Peer Reviewed
• [Journal Article] Globale-VLBI observations of the gamma? ray narrow line Seyfert1PMN J0948+0022 (2011)
  • Author(s): Giroletti, Doi, Nagai, et al
  • Journal Title: A & A Volume: Vol.528 Pages: 11-14
  • DOI: 10.1051/0004-6361/201116639
  • Peer Reviewed
• [Journal Article] Global e-VLBI observations of the gamma-ray narrow line Seyfert 1 PMN J0948+0022 (2011)
  • Author(s): Giroletti, M. ; Paragi, Z. ; Bignall, H. ; Doi, A., et al.
  • Journal Title: Astronomy & Astrophysics Volume: 528 Pages: 11-14
  • Peer Reviewed
• [Journal Article] VLBI Monitoring of3C 84(NGC1275) in Early Phase of the2005Outburst (2010)
  • Author(s): Nagai, Doi, Fujisawa, et al.
  • Journal Title: PASJ Volume: Vol.62, No.2 Pages: 11-15
  • URL: http://ads.nao.ac.jp/abs/2010PASJ.62L.11N
  • Peer Reviewed
• [Journal Article] VLBI Monitoring of 3C 84 (NGC 1275) in Early Phase of the 2005 Outburst (2010)
  • Author(s): Nagai, Hiroshi ; Suzuki, Kenta ; Asada, Keiichi ; Kino, Motoki ; Kameno, Seiji ; Doi, Akihiro, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 62, No2 Pages: 11-15
  • NAID: 10026714344
  • Peer Reviewed
• [Journal Article] Multiwavelength Monitoring of the Enigmatic Narrow? Line Seyfert1PMN J0948+0022in2009March-July (2009)
  • Author(s): Abdo, Doi, Nagai, et al.
  • Journal Title: ApJ Volume: Vol.707, Issue1 Issue: 1 Pages: 727-737
  • DOI: 10.1088/0004-637x/707/1/727
  • Peer Reviewed
• [Journal Article] VLBI Detections of Parsec-Scale Nonthermal Jets in Radio? Loud Broad Absorption Line Quasars (2009)
  • Author(s): Doi, Fujisawa, et al
  • Journal Title: PASJ Volume: Vol.61, No.6 Pages: 1389-1398
  • NAID: 10026422137
  • URL: http://ads.nao.ac.jp/abs/2009PASJ.61.1389D
  • Peer Reviewed
• [Journal Article] VLBI Detections of Parsec-Scale Nonthermal Jets in Radio-Loud Broad Absorption Line Quasars (2009)
  • Author(s): Doi, Akihiro, Kawaguchi, Noriyuki, Kono, Yusuke, Oyama, Tomoaki, Fujisawa, Kenta, Takaba, Hiroshi, Sudou, Hiroshi, Wakamatsu, Ken-Ichi, Yamauchi, Aya, Murata, Yasuhiro, Mochizuki, Nanako, Wajima, Kiyoaki, Omodaka, Toshihiro, Nagayama, Takumi, Nakai, Naomasa, Sorai, Kazuo, Kawai, Eiji, Sekido, Mamoru, Koyama, Yasuhiro, The VLBI Group At Geographical Survey Institute, Asano, Shoichiro, Uose, Hisao
  • Journal Title: Publications of the Astronomical Society of Japan Vol.61, No.6 Pages: 1389-1398
  • NAID: 10026422137
• [Journal Article] Multiwavelength Monitoring of the Enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in 2009 March-July (2009)
  • Author(s): Abdo, A.A., Doi, A., et al.
  • Journal Title: The Astrophysical Journal Volume 707, Issue 1 Pages: 727-737
• [Presentation] 降着円盤風を持つクェーサーに付随する非熱的ジェットの再帰的活動性 (2012)
  • Author(s): 林隆之,土居明広,永井洋, et al
  • Organizer: 日本天文学会,春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-20
• [Presentation] VLBA多周波位相補償アストロメトリで推定されるNGC4261のブラックホール位置と吸収物質 (2012)
  • Author(s): 羽賀崇史,土居明広, et al
  • Organizer: 日本天文学会,春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-20
• [Presentation] 降着円盤風を持つクェーサーに付随する非熱的ジェットの再帰的活動性 (2012)
  • Author(s): 林隆之、土居明広、永井洋
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-20
• [Presentation] VLBA多周波位相補償アストロメトリで推定されるNGC4261のブラックホール位置と吸収物質 (2012)
  • Author(s): 羽賀崇史、土居明広、村田泰宏、須藤広志、亀野誠二、秦和弘
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-20
• [Presentation] 狭輝線セイファート1型銀河の電波銀河の発見 (2012)
  • Author(s): 土居明広,永井洋, et al
  • Organizer: 日本天文学会,春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-19
• [Presentation] 狭輝線セイファート1型銀河の電波銀河の発見 (2012)
  • Author(s): 土居明広、柳楽央至、川勝望、紀基樹、永井洋、浅田圭一
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 2012-03-19
• [Presentation] VLBA多周波位相補償観測によるMrk348における核周プラズマの発見と水メガメーザー源との位置関係 (2011)
  • Author(s): 土居明広, et al
  • Organizer: 日本天文学会,秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-22
• [Presentation] 狭輝線1型セイファート銀河の22GHz H20メーザー探査 (2011)
  • Author(s): 萩原喜昭、土居明広、蜂須賀一也
  • Organizer: 日本天文学会,秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-22
• [Presentation] VLBA多周波位相補償観測によるMrk348における核周プラズマの発見と水メガメーザー源との位置関係 (2011)
  • Author(s): 土居明広、亀野誠二、澤田--佐藤聡子、秦和弘、羽賀崇史
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-22
• [Presentation] 狭輝線1型セイファート銀河の22GHz H_2Oメーザー探査 (2011)
  • Author(s): 萩原喜昭、土居明広、蜂須賀一也
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-22
• [Presentation] 電波で明るいBALクェーサーのVLBAによる多周波偏波観測 (2011)
  • Author(s): 林隆之,土居明広,永井洋
  • Organizer: 日本天文学会,春季年会
  • Place of Presentation: 筑波大学
  • Year and Date: 2011-03-19
• [Presentation] VLBI多周波位相補償観測により明らかになったMrk348における自由-自由吸収領域と水メーザーの関係 (2011)
  • Author(s): 土居明広, et al
  • Organizer: 日本天文学会,春季年会
  • Place of Presentation: 筑波大学
  • Year and Date: 2011-03-17
• [Presentation] VLBI多周波位相補償観測により明らかになったMrk348における自由--自由吸収領域と水メーザーの関係 (2011)
  • Author(s): 土居明広、亀野誠二、澤田--佐藤聡子、秦和弘、羽賀崇史
  • Organizer: 日本天文学会
  • Place of Presentation: 筑波大学
  • Year and Date: 2011-03-17
• [Presentation] Broad Absorption Line/Giga-hertz Peaked Spectrumクェーサー?: JapaneseVLBI NetworkによるVLBI多周波観測 (2009)
  • Author(s): 土居明広、藤澤健太, etal
  • Organizer: 日本天文学会,秋季年会
  • Place of Presentation: 山口大学
  • Year and Date: 2009-09-14
• [Presentation] Broad Absorption Line/Giga-hertz Peaked Spectrum クェーサー? : Japanese VLBI Network によるVLBI多周波観測 (2009)
  • Author(s): 土居明広、望月奈々子、村田泰宏、浅田圭一、永井洋、本間希樹、藤澤健太、JVNチーム
  • Organizer: 日本天文学会
  • Place of Presentation: 山口大学
  • Year and Date: 2009-09-14