1. Oral Presentations in Conferences/workshops

Future conferences/workshops

[38]Rapidly growing supermassive black holes in extremely radio-loud galaxies, “The many faces of black hole accretion” in the EAS meeting 2021: June 28-July 2 (the talk was assigned on XXX), 2021, online.

[37]Serendipitous Discovery Of Dying Agn In Arp 187″ , AGN & Quasar session in the 238th AAS meeting 2021: June 7-June 9 (the talk was assigned on June 8), 2021, online.

Past conferences/workshops

[36]Extremely radio loud galaxies, Subaru/HSC AGN meeting: January 23-24 (the talk was assigned on January 23), 2020, Kyoto University, Japan

[35]Obscured SMBH assembly using multi-wavelength and wide-field surveys” (invited), Subaru 20: Optical and Infrared Astronomy for the next Decade: November 17-22 (the talk was assigned on November 21), 2019, Hawaii, USA

[34]Seeing common or rare AGN with TMT (invited), TMT Science Forum 2019: Science Synergies in the era of the Thirty-Meter-Telescope : November 4-6 (the talk was assigned on November 4), 2019, University of Xiamen, China

[33]Complete IR View of Swift/BAT AGN, “AGN-Starburst meeting 2019′ August 12-16 (the talk was assigned on August 12), 2019, Guiyang, China

[32]“Gravitational Waves from SMBH binaries in U/HyLIRGs”, “EWASS 2019” June 24-28 (the talk was assigned on Jun 28), 2019, Lyon, France

[31]“IR view of X-ray AGN: The covering factor of gas and dust in Swift/BAT AGN”, “Supermassive black holes: Environment and Evolution” June 19-22 (the talk was assigned on Jun 19), 2019, Corfu island, Greece

[30]“WERGS: Optically-faint radio galaxies discovered by Subaru/HSC and VLA/FIRST”, “HSC-eROSITA meeting” May 13-16 (the talk was assigned on May 14 and 15), 2019, MPE, Munich, Germany

[29]”Extremely radio-loud AGN discovered by Subaru/HSC”, “Extremely Big Eyes on the Early Universe 2019”, Mar 25-30 (the talk was assigned on Mar 27), 2019, IPMU, Tokyo, Japan

[28]“Host galaxy properties of pure-IR AGN”, “BASS workshop 2019”,  Feb 3-6 (the talk was assigned on Feb 5), 2019, University of Florida, FL, USA

[27]“Gravitational wave signals from SMBHs in Hy/ULIRGs”, “East Asia high-z galaxy workshop”,  Jan 31-Feb 1 (the talk was assigned on Feb 1), 2019, NAOJ, Tokyo, Japan

[26]“The Covering Factor of Dust and Gas in Swift/BAT AGN”, “East Asia AGN workshop 2019”,  Jan 21-23 (the talk was assigned on Jan 23), 2019, ASIAA, Taipei, Taiwan

[25]“BASS Survey: The Covering Factor of Dust and Gas in Swift/BAT AGN”, “TORUS2018: The many faces of the AGN obscuration”,  December 10-14 (the talk was assigned on Dec. 14), 2018, Puerto Varas, Chile

[24]“Extremely radio-loud AGN residing in low-mass galaxies discovered by HSC survey”, “Formation and evolution of SMBHs”,  November 2-3 (the talk was assigned on Nov. 3), 2018, Tohoku University, Japan

[23]“The complete IR view of the Swift/BAT 70 month AGN catalog”, “42nd COSPAR Assembly”  July 14-22 (the talk was assigned on Jul 19), 2018, Pasadena, CA, USA

[22] “Dying AGN in Arp 187”, ASNY50, American Museum of Natural History (AMNH), July 11-13 2018 (the talk was assigned on Jul 13), NY, USA

[21] “BAT AGN Spectroscopy Survey: The Covering Factor of Dust and Gas in Swift/BAT AGN”, “NERQUAM 2018”  May 23, 2018, Yale University, USA

[20]“Is there a maximum mass for supermassive black holes?”, “East Asian Young Astronomers Meeting 2017”  Nov 13-17 (the talk was assigned on Nov 14), 2017, Ishigaki, Okinawa, Japan

[19]“What TMT/MICHI tells us on AGN and Black Holes”, “TMT forum 2017: Beyond First Light”  Nov 7-9 (the talk was assigned on Nov 8), 2017, Infosys campus, Mysuru, India

[18]“Discovery of a dying AGN in Arp 187”, “Unveiling the Physics Behind Extreme AGN Variability”  Jul 11-14 (the talk was assigned on Jul 12), 2017, University of the Virgin Island, USA

[17]“The complete IR view of the Swift/BAT 70 month  AGN catalog”, “Elusive AGN in the Next Era”  Jun 12-15 (the talk was assigned on Jun 13), 2017, George Mason University, USA

[16]“Complete infrared view of the 70 month Swift/BAT AGN catalog”, “Quasars at all cosmic epochs”  Apr 3-7 (the talk was assigned on Apr 3), 2017, Padua, Italy

[15]“Discovery of a dead AGN in Arp 187”, “East Asia AGN workshop 2016”  Sep 22, 2016, SNU, Seoul, Korea

[14]“Key AGN Science Cases with MICHI”, “TMT science forum 2016”  May 26, 2016, Kyoto, Japan

[13]“Science Cases of MICHI from AGN/BH physics group” (Invited), “TMT/MICHI workshop”  May 23, 2016, Kyoto University, Japan

[12]“Determining the dust torus covering factor using clumpy torus models in IR” (Invited), “Prospects, challenges, and evolution of AGN modeling in the Astro-H Era”  (Oct 21, 2015, Rikkyo University, Japan

[11]“On the torus structure and the detection of polarized broad emission lines in AGN”, East Asia AGN workshop 2015, Jul 14, 2015, Changchun, China

[10]“Outflow/inflow study of buried AGN through 4.7um CO absorption line”, TMT Thermal infrared science & instrument workshop, Jun 12, 2015, University of Tokyo, Japan

[9]“How Torus Structure Affects Detection of Polarized Broad Emission Lines in AGN”, East Asian Young Astronomers Meeting 2015, Feb 2015, ASIAA in Taipei, Taiwan

[8]“Clumpy Torus Modeling of Polarized and Unpolarized BLR AGN”, Los Piratas AGN Meeting 2014, Apr 2014, Instituto de Astrofisica de Canarias, Spain

[7]“Buried active galactic nuclei in infrared galaxies studied by AKARI 2.5-5.0 um spectroscopy”, East Asia AGN workshop 2013, Sep 2013, Sapporo, Japan

[6]“Mid-infrared and hard X-ray luminosity correlation of a complete sample of local AGNs”, Torus Workshop 2012, Dec 2012, the University of Texas at San Antonio, USA

[5]“MIR and hard X-ray luminosity correlation of a complete AGN sample in the local universe”, East Asia AGN workshop 2012, Sep 2012, Jeju, Korea

[4] “Disentangling mid-IR power of AGNs: dust tori and host galaxy starburst”, TMT/MICHI workshop, Apr 2012, University of Tokyo, Japan

[3] “Mid and Far Infrared Properties of a Complete Sample of Local AGNs”, The Second AKARI conference: Legacy of AKARI: A Panoramic View of the Dusty Universe, Feb 2012, Jeju, Korea

[2]“AKARI 2.5-5 um Spectroscopy of Optically Non-Seyfert Ultra/Luminous Infrared Galaxies”, The 5th Korea-Japan Young Astronomers Meeting, Feb 2012, Yonsei University, Seoul, Korea

[1]“X-ray and Infrared Connection of AGNs: Cross-Correlation of Swift/BAT and AKARI All-Sky Survey Catalogs”, East Asian Young Astronomers Meeting 2011, Feb 2011, Jeju, Korea

2. Poster Presentations in International Conferences

[8] “Covering factor of dust and gas in Swift/BAT AGN”, SPICA2019, May 20-23, 2019, Crete, Greece

[7] “Is there a maximum mass for supermassive black holes?”, IAU Focus Meeting 3: Radio galaxies: Resolving the AGN phenomenon, Aug 22-23, 2018, Vienna, Austria

[6] “3-500 um infrared properties of 70-month Swift/BAT AGN catalog”, Hidden Monsters 2016, Aug 8-12 2016, Dartmouth College, USA

[5] “Difference of torus obscuration between hidden and non-hidden broad line AGN”, Subaru Users’ Meeting FY2015, Jan 19-21 2016, KKR Hotel Atami, Japan

[4] ” Torus geometry difference between hidden and non-hidden broad line AGN”, TORUS2015, Sep 14-17 2015, University of Southampton, UK

[3] ” Infrared luminosity contribution of buried AGN in infrared galaxies”, Powerful AGN and Their Host Galaxies Across Cosmic Time, Jun 2014, Australia

[2] “Unveiling energy contribution of buried AGNs in infrared galaxies”, Suzaku-MAXI conference 2014, Feb 2014, Matsuyama, Japan

[1] “Mid-Infrared Properties of hard X-ray selected AGNs in the local universe”, 2013 COSMOS Team Meeting, May 2013, Kyoto University, Japan

3. Oral Presentations in domestic conference

[19] “Searching dying AGN”, BH IR observation meeting, Miyagi University of Education, March 26, 2020 (the talk was assigned on Mar 26)

[18] “Discovery of Dying AGN in Arp 187: Experience of Drastic Luminosity Decline within 10^4 yr”, ASJ fall meeting in 2019, Kumamoto University, September 11-13, 2019 (the talk was assigned on September 12)

[17] “Complete IR View of Swift/BAT AGN“, 6th Galaxy Evolution Workshop, IPMU, Jun 5-7, 2019 (the talk was assigned on Jun 5)

[16] “Observation of Supermassive Black Holes” (invited), 6th SMBH workshop, Kyoto University, May 29-30, 2019 (the talk was assigned on May 29)

[15] “The Covering Factor of Dust and Gas in Swift/BAT Active Galactic Nuclei”, ASJ meeting 2019 Spring, Hosei University, Mar 14-17, 2019 (the talk was assigned on Mar 16)

[14] “The beginning and ending phase of AGN” (invited), Kure AGN workshop, Kure college, Feb 9-10, 2019 (the talk was assigned on Feb 10)

[13] “BASS IR photometric catalog and dying AGN search”, Local AGN Workshop, Kyoto University, June 13-14 2018 (the talk was assigned on Jun 14)

[12] “Looking at drastic AGN luminosity decline in Arp 187 within 10^4 years”, 5th Galaxy Evolution Workshop, Ehime University, June 6-8 2018 (the talk was assigned on Jun 8)

[11] “3-500 um IR properties of the 70-month Swift/BAT AGN”, 日本天文学会2017年春季年会, 九州大学, 2017年3月15-18日 (talkは16日)

[10] “AGN key science cases enabled by TMT/MICHI” (invited), 銀河進化研究会2016, 東北大学, 2016年6月1-3日 (talkは3日)

[9] “Witnessing the final stage of AGN in Arp 187“, 日本天文学会 2016年春季年会, 首都大学東京, 2016年3月14-17日 (talkは15日)

[8] “Sudden Death of AGN in Arp 187?”, ALMA workshop “AGN銀河の中心1kpc → 1pcスケールでの質量降着機構の理解に向けて”, NAOJ, 2015年12月21-22日 (talkは21日)

[7] “赤外線観測から見たAGNトーラスと統一モデルの現状” (invited), 「超巨大ブラックホールと降着円盤スペクトルの解釈を巡って」, ISAS/JAXA, 2015年8月11-12日 (talkは11日)

[6] “2型活動銀河核の偏光広輝線観測に対するトーラスの幾何構造の影響”, 日本天文学会 2015年春季年会, 大阪大学, 2015年3月18-21日

[5] “あかり2.5-5.0 um分光観測から探る赤外線銀河のダストのエネルギー源”, 銀河進化研究会2014, 国立天文台三鷹キャンパス, 2014年6月

[4] “AKARI/IRCを用いた、赤外線銀河内の埋もれた活動銀河核の探査とその赤外線光度への寄与の見積もり”, 日本天文学会2014年春季年会, 国際基督教大学, 2014年3月

[3] “Swift/BAT AGNの中間赤外線における性質とSPICAで探るニュータイプAGN”, 次世代赤外線天文衛星SPICAが目指す宇宙星形成史とブラックホール進化の解明, 名古屋大学, 2011年10月

[2] “Swift/BAT硬X線9ヶ月カタログと「あかり」中間赤外線全天サーベイカタログを用いた活動銀河核の光度相関とトーラスモデルへの示唆”, 日本天文学会2011年秋季年会, 鹿児島大学, 2011年9月

[1] “「あかり」赤外線全店サーベイカタログとSwift-BAT硬X線全天サーベイカタログを用いた活動銀河核の光度相関(II)”, 日本天文学会 2011年春季年会予稿集, 筑波大学, 2011年3月

4. Seminar Talks



  • Kaffeerunde, MPE, Garching, Germany (online, May 20)
  • Seminar talk, Astro-History team meeting, Japan (online, May 10)


  • Colloquium, NAOJ Mizusawa campus, Iwate, Japan (Jan 8)


  • “Lunch seminar”, IPMU, Tokyo, Japan (Jul 9)
  • “ALMA seminar”, ALMA-J office, Tokyo, Japan (Jun 4)


  • “TMT talk”, ESO, Santiago, Chile (Dec 20)
  • “Seminar”, Universidad Diego portales, Santiago, Chile (Dec 18)
  • “Colloquium”, Osaka University, Osaka, Japan (Nov 28)
  • “Colloquium”, Ehime University, Ehime, Japan (Nov 20)
  • “Lunch Talk”, KIAA, Beijing, China (Nov 15)
  • “Tristate PD retreat”, CCA, NY, USA (May 17)
  • “Colloquium”, Tohoku University, Sendai, Japan (Apr 16)


  • “Astro-coffee seminar”, NAOJ, Tokyo, Japan (Nov 20)
  • “Special seminar”, UTSA, TX, USA (Sep 25)
  • “NOAO special seminar talk”, NOAO, AZ, USA (Jul 18)
  • “Pizza Lunch talk”, Columbia University, NY, USA, (Feb 21)
  • “SOFIA colloquium”, NASA Ames Research Center, CA, USA (Jan 17)


  • “TAO/MIMIZUKU seminar”, University of Tokyo, Tokyo, Japan (Oct 16)
  • “IoA seminar” University of Tokyo, Tokyo, Japan (Jul 23)
  • “AGN seminar”, Hiroshima University, Japan (Jul)
  • “ISAS Astrophysics Colloquium”, ISAS/JAXA, Kanagawa, Japan (Jun)

5. Press Release & Interview

[4] “Active Galactic Nucleus caught in the act of ‘dying’“, Appeared at NEWS of Tohoku University on April 1, 2019. Japanese version is 「最期を迎えた超巨大ブラックホールの発見 〜死を迎えても輝きを失わないブラックホール〜」.

[3] My activity as SOC/LOC chair of EAYAM 2017 in Ishigaki island, Japan, Appeared in the local newspapers of “Yaeyama Nippou” and “Yaeyama Mainichi” on Nov 15-19, 2017

[2] “NAOJ and UTSA Sign an Agreement to Collaborate in Astronomy”, Appeared as one of the collaborators with Dr. C. Packham in UTSA, 2016 Dec 12 (in English)

[1] “Making Sense of the Universe”, Interviewed by Kyoto University, 2015 Feb 24 (in English)

6. Outreach

[5] “ブラックホール観測入門: ブラックホールを作って太らせて、そして最後は見てみよう”, Public talk at JASS, Columbia University, 2018 Jun 26 (in Japanese)

[4] “ブラックホールのおはなし (Let’s make black hole)”, talk “最近の宇宙ってどう? (What are recent hot topics in Astronomy?)” by Meganeya in Osaka, Japan, 2018 Mar 24 (in Japanese)

[3] “天文学ってなに (What is Astronomy?)”, talk “アメリカIvy League視察団” by Yotsuya Otsuka at Columbia University, 2017 Jul 24 (in Japanese)

[2] “ブラックホールを見る (Observing black holes)”, Public Lecture at JASS , Columbia University, 2017 Feb 10 (in Japanese)

[1] “職業インタビュー”, Interviewed by Shiratori Junior high school, 2016 Aug 30 (in Japanese)

7. Media

[2] Appeared in local Radio (Ohshu FM on 1-2pm, Jan 8, 2020)

[1] “見えないものを見る(Watching at unseen objects)”, Column No.30 at Open Astronomy, 2015 Feb 27 (in Japanese)

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