Extremely Dense Gas around Little Red Dots and High-redshift Active Galactic Nuclei: A Nonstellar Origin of the Balmer Break and Absorption Features

Authors: Kohei Inayoshi, Roberto Maiolino

Source: The Astrophysical Journal Letters, Vol 980, Iss 2, p L27 (2025)

Subject Terms: Galaxy formation, High-redshift galaxies, Quasars, Supermassive black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/2af95c9cf8b7490789181c1d6c991d4e

Little Red Dots: Rapidly Growing Black Holes Reddened by Extended Dusty Flows

Authors: Zhengrong Li, Kohei Inayoshi, Kejian Chen, Kohei Ichikawa, Luis C. Ho

Source: The Astrophysical Journal, Vol 980, Iss 1, p 36 (2025)

Subject Terms: Supermassive black holes, Galaxy formation, High-redshift galaxies, Quasars, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/1d235734d93d4405b5fb9186babd3272

A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE): Impact of Galaxies on the Circumgalactic Medium Metal Enrichment at z > 6 Using the JWST and VLT

Authors: Siwei Zou, Zheng Cai, Feige Wang, Xiaohui Fan, Jaclyn B. Champagne, Joseph F. Hennawi, Jan-Torge Schindler, Emanuele Paolo Farina, Jinyi Yang, Kohei Inayoshi, Eduardo Bañados, Sarah E. I. Bosman, Zihao Li, Xiaojing Lin, Yunjing Wu, Fengwu Sun, Ziyi Guo, Girish Kulkuarni, Mélanie Habouzit, Stephane Charlot, Jacopo Chevallard, Thomas Connor, Anna-Christina Eilers, Linhua Jiang, Xiangyu Jin, Koki Kakiichi, Mingyu Li, Romain A. Meyer, Fabian Walter, Huanian Zhang

Source: The Astrophysical Journal Letters, Vol 963, Iss 1, p L28 (2024)

Subject Terms: Circumgalactic medium, Population III stars, High-redshift galaxies, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/aa78eacf81514764b0bc2561595871e2

Birth of Rapidly Spinning, Overmassive Black Holes in the Early Universe

Authors: Kohei Inayoshi, Kohei Ichikawa

Source: The Astrophysical Journal Letters, Vol 973, Iss 2, p L49 (2024)

Subject Terms: Galaxy formation, High-redshift galaxies, Quasars, Supermassive black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/7e80298c4ec44d7aac9ce4227129625d

Black Hole Mass and Eddington-ratio Distributions of Less-luminous Quasars at z ∼ 4 in the Subaru Hyper Suprime-Cam Wide Field

Authors: Wanqiu He, Masayuki Akiyama, Motohiro Enoki, Kohei Ichikawa, Kohei Inayoshi, Nobunari Kashikawa, Toshihiro Kawaguchi, Yoshiki Matsuoka, Tohru Nagao, Masafusa Onoue, Taira Oogi, Andreas Schulze, Yoshiki Toba, Yoshihiro Ueda

Source: The Astrophysical Journal, Vol 962, Iss 2, p 152 (2024)

Subject Terms: Supermassive black holes, Galaxy evolution, High-redshift galaxies, Active galaxies, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/39821e42972f411daa82afbfa89a8b69

Exploring Low-mass Black Holes through Tidal Disruption Events in the Early Universe: Perspectives in the Era of the JWST, Roman Space Telescope, and LSST Surveys

Authors: Kohei Inayoshi, Kazumi Kashiyama, Wenxiu Li, Yuichi Harikane, Kohei Ichikawa, Masafusa Onoue

Source: The Astrophysical Journal, Vol 966, Iss 2, p 164 (2024)

Subject Terms: Supermassive black holes, Quasars, Galaxy formation, High-redshift galaxies, Tidal disruption, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/097b80a325564e9f81cf1c7e339e6b7a

Reconstruction of Cosmic Black Hole Growth and Mass Distribution from Quasar Luminosity Functions at z > 4: Implications for Faint and Low-mass Populations in JWST

Authors: Wenxiu Li, Kohei Inayoshi, Masafusa Onoue, Wanqiu He, Yoshiki Matsuoka, Zhiwei Pan, Masayuki Akiyama, Takuma Izumi, Tohru Nagao

Source: The Astrophysical Journal, Vol 969, Iss 1, p 69 (2024)

Subject Terms: High-redshift galaxies, Quasars, Supermassive black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/406c54dcd9b641c28c087f04c8a59a0c

Quasar Luminosity Function at z = 7

Authors: Yoshiki Matsuoka, Masafusa Onoue, Kazushi Iwasawa, Michael A. Strauss, Nobunari Kashikawa, Takuma Izumi, Tohru Nagao, Masatoshi Imanishi, Masayuki Akiyama, John D. Silverman, Naoko Asami, James Bosch, Hisanori Furusawa, Tomotsugu Goto, James E. Gunn, Yuichi Harikane, Hiroyuki Ikeda, Kohei Inayoshi, Rikako Ishimoto, Toshihiro Kawaguchi, Satoshi Kikuta, Kotaro Kohno, Yutaka Komiyama, Chien-Hsiu Lee, Robert H. Lupton, Takeo Minezaki, Satoshi Miyazaki, Hitoshi Murayama, Atsushi J. Nishizawa, Masamune Oguri, Yoshiaki Ono, Taira Oogi, Masami Ouchi, Paul A. Price, Hiroaki Sameshima, Naoshi Sugiyama, Philip J. Tait, Masahiro Takada, Ayumi Takahashi, Tadafumi Takata, Masayuki Tanaka, Yoshiki Toba, Shiang-Yu Wang, Takuji Yamashita

Source: The Astrophysical Journal Letters, Vol 949, Iss 2, p L42 (2023)

Subject Terms: Supermassive black holes, Quasars, Reionization, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/58ac7e9877d440c7934997f0f2835f1d

A Candidate for the Least-massive Black Hole in the First 1.1 Billion Years of the Universe

Authors: Masafusa Onoue, Kohei Inayoshi, Xuheng Ding, Wenxiu Li, Zhengrong Li, Juan Molina, Akio K. Inoue, Linhua Jiang, Luis C. Ho

Source: The Astrophysical Journal Letters, Vol 942, Iss 1, p L17 (2023)

Subject Terms: Supermassive black holes, Reionization, Quasars, Low-luminosity active galactic nuclei, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/3b0572b9539e426a8bb14858f6a8ce34

Hidden Little Monsters: Spectroscopic Identification of Low-mass, Broad-line AGNs at z > 5 with CEERS

Authors: Dale D. Kocevski, Masafusa Onoue, Kohei Inayoshi, Jonathan R. Trump, Pablo Arrabal Haro, Andrea Grazian, Mark Dickinson, Steven L. Finkelstein, Jeyhan S. Kartaltepe, Michaela Hirschmann, James Aird, Benne W. Holwerda, Seiji Fujimoto, Stéphanie Juneau, Ricardo O. Amorín, Bren E. Backhaus, Micaela B. Bagley, Guillermo Barro, Eric F. Bell, Laura Bisigello, Antonello Calabrò, Nikko J. Cleri, M. C. Cooper, Xuheng Ding, Norman A. Grogin, Luis C. Ho, Taylor A. Hutchison, Akio K. Inoue, Linhua Jiang, Brenda Jones, Anton M. Koekemoer, Wenxiu Li, Zhengrong Li, Elizabeth J. McGrath, Juan Molina, Casey Papovich, Pablo G. Pérez-González, Nor Pirzkal, Stephen M. Wilkins, Guang Yang, L. Y. Aaron Yung

Source: The Astrophysical Journal Letters, Vol 954, Iss 1, p L4 (2023)

Subject Terms: Quasars, Supermassive black holes, High-redshift galaxies, Active galactic nuclei, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/2041-8205

Access URL: https://doaj.org/article/376369b27cc54bb79f472a580d902559

The Assembly of Black Hole Mass and Luminosity Functions of High-redshift Quasars via Multiple Accretion Episodes

Authors: Wenxiu Li, Kohei Inayoshi, Masafusa Onoue, Daisuke Toyouchi

Source: The Astrophysical Journal, Vol 950, Iss 2, p 85 (2023)

Subject Terms: Quasars, Supermassive black holes, Astrophysics, QB460-466

File Description: electronic resource

Relation: https://doaj.org/toc/1538-4357

Access URL: https://doaj.org/article/e658e68ad91c44aca5875970f67ce22a

The Current Status and Future Prospects of KAGRA, the Large-Scale Cryogenic Gravitational Wave Telescope Built in the Kamioka Underground

Authors: Homare Abe, Tomotada Akutsu, Masaki Ando, Akito Araya, Naoki Aritomi, Hideki Asada, Yoichi Aso, Sangwook Bae, Rishabh Bajpai, Kipp Cannon, Zhoujian Cao, Eleonora Capocasa, Man Leong Chan, Dan Chen, Yi-Ru Chen, Marc Eisenmann, Raffaele Flaminio, Heather K. Fong, Yuta Fujikawa, Yuya Fujimoto, I. Putu Wira Hadiputrawan, Sadakazu Haino, Wenbiao Han, Kazuhiro Hayama, Yoshiaki Himemoto, Naoatsu Hirata, Chiaki Hirose, Tsung-Chieh Ho, Bin-Hua Hsieh, He-Feng Hsieh, Chia-Hsuan Hsiung, Hsiang-Yu Huang, Panwei Huang, Yao-Chin Huang, Yun-Jing Huang, David C. Y. Hui, Kohei Inayoshi, Yuki Inoue, Yousuke Itoh, Pil-Jong Jung, Takaaki Kajita, Masahiro Kamiizumi, Nobuyuki Kanda, Takashi Kato, Chunglee Kim, Jaewan Kim, Young-Min Kim, Yuichiro Kobayashi, Kazunori Kohri, Keiko Kokeyama, Albert K. H. Kong, Naoki Koyama, Chihiro Kozakai, Jun’ya Kume, Sachiko Kuroyanagi, Kyujin Kwak, Eunsub Lee, Hyung Won Lee, Ray-Kuang Lee, Matteo Leonardi, Kwan-Lok Li, Pengbo Li, Lupin Chun-Che Lin, Chun-Yu Lin, En-Tzu Lin, Hong-Lin Lin, Guo-Chin Liu, Ling-Wei Luo, Miftahul Ma’arif, Yuta Michimura, Norikatsu Mio, Osamu Miyakawa, Kouseki Miyo, Shinji Miyoki, Nozomi Morisue, Kouji Nakamura, Hiroyuki Nakano, Masayuki Nakano, Tatsuya Narikawa, Lan Nguyen Quynh, Takumi Nishimoto, Atsushi Nishizawa, Yoshihisa Obayashi, Kwangmin Oh, Masatake Ohashi, Tomoya Ohashi, Masashi Ohkawa, Yoshihiro Okutani, Ken-ichi Oohara, Shoichi Oshino, Kuo-Chuan Pan, Alessandro Parisi, June Gyu Park, Fabián E. Peña Arellano, Surojit Saha, Kazuki Sakai, Takahiro Sawada, Yuichiro Sekiguchi, Lijing Shao, Yutaka Shikano, Hirotaka Shimizu, Katsuhiko Shimode, Hisaaki Shinkai, Ayaka Shoda, Kentaro Somiya, Inhyeok Song, Ryosuke Sugimoto, Jishnu Suresh, Takamasa Suzuki, Takanori Suzuki, Toshikazu Suzuki, Hideyuki Tagoshi, Hirotaka Takahashi, Ryutaro Takahashi, Hiroki Takeda, Mei Takeda, Atsushi Taruya, Takayuki Tomaru, Tomonobu Tomura, Lucia Trozzo, Terrence T. L. Tsang, Satoshi Tsuchida, Takuya Tsutsui, Darkhan Tuyenbayev, Nami Uchikata, Takashi Uchiyama, Tomoyuki Uehara, Koh Ueno, Takafumi Ushiba, Maurice H. P. M. van Putten, Tatsuki Washimi, Chien-Ming Wu, Hsun-Chung Wu, Tomohiro Yamada, Kazuhiro Yamamoto, Takahiro Yamamoto, Ryo Yamazaki, Shu-Wei Yeh, Jun’ichi Yokoyama, Takaaki Yokozawa, Hirotaka Yuzurihara, Simon Zeidler, Yuhang Zhao

Source: Galaxies, Vol 10, Iss 3, p 63 (2022)

Subject Terms: gravitational wave detector, laser interferometer, cryogenics, underground, Astronomy, QB1-991

File Description: electronic resource

Relation: https://www.mdpi.com/2075-4434/10/3/63; https://doaj.org/toc/2075-4434

Access URL: https://doaj.org/article/4cd829a8f3c34a4299926d1a839d78ce

eROSITA Final Equatorial-Depth Survey (eFEDS): eFEDS X-ray view of WERGS radio galaxies selected by the Subaru/HSC and VLA/FIRST survey.

Authors: Kohei Ichikawa, Takuji Yamashita, Merloni, Andrea, Junyao Li, Teng Liu, Salvato, Mara, Masayuki Akiyama, Arcodia, Riccardo, Dwelly, Tom, Xiaoyang Chen, Masatoshi Imanishi, Kohei Inayoshi, Toshihiro Kawaguchi, Taiki Kawamuro, Mitsuru Kokubo, Yoshiki Matsuoka, Nagao, Tohru, Schramm, Malte, Hyewon Suh, Masayuki Tanaka

Source: Astronomy & Astrophysics / Astronomie et Astrophysique; 3/28/2023, Vol. 672, p1-20, 32p

Subject Terms: RADIO jets (Astrophysics), RADIO galaxies, X-rays, ACTIVE galactic nuclei, STELLAR mass, RADIO programs

Company/Entity: SUBARU Corp.

Rapid growth of black holes accompanied with hot or warm outflows exposed to anisotropic super-Eddington radiation.

Authors: Eishun Takeo¹ takeo@kusastro.kyoto-u.ac.jp, Kohei Inayoshi², Ken Ohsuga³, Takahashi, Hiroyuki R.³, Mineshige, Shin¹

Source: Monthly Notices of the Royal Astronomical Society. May2018, Vol. 476 Issue 1, p673-682. 10p.

Subject Terms: *BLACK holes, *ANISOTROPY, *EDDINGTON mass limit, *STAR formation, *STELLAR magnetic fields

Formation pathway of Population III coalescing binary black holes through stable mass transfer.

Authors: Kohei Inayoshi¹ inayoshi@astro.columbia.edu, Ryosuke Hirai², Tomoya Kinugawa³, Kenta Hotokezaka⁴

Source: Monthly Notices of the Royal Astronomical Society. Jul2017, Vol. 468 Issue 4, p5020-5032. 13p.

Subject Terms: *BLACK holes, *GRAVITATIONAL waves, *PLANCK (Artificial satellite), *STELLAR initial mass function, *STAR formation

Gravitational Waves from Supermassive Black Hole Binaries in Ultraluminous Infrared Galaxies.

Authors: Kohei Inayoshi, Kohei Ichikawa, Zoltán Haiman

Source: Astrophysical Journal Letters; 8/20/2018, Vol. 863 Issue 2, p1-1, 1p

Opacity Limit for Supermassive Protostars.

Authors: Fernando Becerra, Federico Marinacci, Kohei Inayoshi, Volker Bromm, Lars E. Hernquist

Source: Astrophysical Journal; 4/20/2018, Vol. 857 Issue 2, p1-1, 1p

Subject Terms: METAPHYSICAL cosmology, HYDRODYNAMICS, PROTOSTARS, OPACITY (Optics) measurement, REDSHIFT

Quenching of Supermassive Black Hole Growth around the Apparent Maximum Mass.

Authors: Kohei Ichikawa, Kohei Inayoshi

Source: Astrophysical Journal Letters; 5/1/2017, Vol. 840 Issue 1, p1-1, 1p

IS THERE A MAXIMUM MASS FOR BLACK HOLES IN GALACTIC NUCLEI?

Authors: Kohei Inayoshi^1,2 inayoshi@astro.columbia.edu, Zoltán Haiman²

Source: Astrophysical Journal. 9/10/2016, Vol. 828 Issue 2, p1-1. 1p.

Subject Terms: *SUPERMASSIVE black holes, *GALACTIC nuclei, *STELLAR mass, *ACCRETION disks, *QUASARS

STELLAR TIDAL DISRUPTION EVENTS BY DIRECT-COLLAPSE BLACK HOLES.

Authors: Kazumi Kashiyama^1,2 kashiyama@berkeley.edu, Kohei Inayoshi^3,4 inayoshi@astro.columbia.edu

Source: Astrophysical Journal. 7/20/2016, Vol. 826 Issue 1, p1-1. 1p.

Subject Terms: *BLACK holes, *GALAXIES, *STARS, *STAR clusters, *ACCRETION (Astrophysics)