Works matching AU Akitaya, Hiroshi

Results: 21

Kottamia Faint Imaging Spectro-Polarimeter (KFISP): opto-mechanical design, software control and performance analysis.

Published in:

Experimental Astronomy, 2022, v. 53, n. 1, p. 45, doi. 10.1007/s10686-021-09802-z

By:

Azzam, Yosry A.;
Elnagahy, F. I. Y.;
Ali, Gamal B.;
Essam, A.;
Saad, Somaya;
Ismail, Hamed;
Zead, I.;
Ahmed, Nasser M.;
Yoshida, Michitoshi;
Kawabata, Koji S.;
Akitaya, Hiroshi;
Shokry, A.;
Hendy, Y. H. M.;
Takey, Ali;
Hamed, G. M.;
Mack, Peter

Publication type:

Article

J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO's and Virgo's third observing run.

Published in:

Progress of Theoretical & Experimental Physics: PTEP, 2021, v. 2021, n. 5, p. 1, doi. 10.1093/ptep/ptab007

By:

Sasada, Mahito;
Utsumi, Yousuke;
Itoh, Ryosuke;
Tominaga, Nozomu;
Tanaka, Masaomi;
Morokuma, Tomoki;
Yanagisawa, Kenshi;
Kawabata, Koji S;
Ohgami, Takayuki;
Yoshida, Michitoshi;
Abe, Fumio;
Adachi, Ryo;
Akitaya, Hiroshi;
Chong, Yang;
Daikuhara, Kazuki;
Hamasaki, Ryo;
Honda, Satoshi;
Hosokawa, Ryohei;
Iida, Kota;
Imazato, Fumiya

Publication type:

Article

The Microvariability and Wavelength Dependence of Polarization Vector of BL Lacertae in the Outburst 2020 to 2021.

Published in:

Proceedings of the International Astronomical Union, 2022, v. 17, n. S375, p. 61, doi. 10.1017/S1743921323000649

By:

Imazawa, Ryo;
Sasada, Mahito;
Hazama, Natsuko;
Fukazawa, Yasushi;
Nakaoka, Tatsuya;
Akitaya, Hiroshi;
Kawabata, Koji S.;
Bohn, Thomas;
Gangopadhyay, Anjasha

Publication type:

Article

Effect of Polycyclic Aromatic Hydrocarbons on Development of the Ascidian Ciona intestinalis Type A.

Published in:

International Journal of Environmental Research & Public Health, 2020, v. 17, n. 4, p. 1340, doi. 10.3390/ijerph17041340

By:

Sekiguchi, Toshio;
Akitaya, Hiroshi;
Nakayama, Satoshi;
Yazawa, Takashi;
Ogasawara, Michio;
Suzuki, Nobuo;
Hayakawa, Kazuichi;
Wada, Shuichi

Publication type:

Article

New evidence supporting past dust ejections from active asteroid (4015) Wilson–Harrington.

Published in:

Astronomy & Astrophysics / Astronomie et Astrophysique, 2024, v. 690, p. 1, doi. 10.1051/0004-6361/202451225

By:

Jin, Sunho;
Ishiguro, Masateru;
Geem, Jooyeon;
Naito, Hiroyuki;
Takahashi, Jun;
Akitaya, Hiroshi;
Kuroda, Daisuke;
Urakawa, Seitaro;
Takagi, Seiko;
Oono, Tatsuharu;
Sekiguchi, Tomohiko;
Perna, Davide;
Ieva, Simone;
Bach, Yoonsoo P.;
Imazawa, Ryo;
Kawabata, Koji S.;
Watanabe, Makoto;
Jo, Hangbin

Publication type:

Article

Optical photon-counting observation of the Crab pulsar with the Kanata telescope using a prototype IMONY.

Published in:

Publications of the Astronomical Society of Japan, 2025, v. 77, n. 2, p. 425, doi. 10.1093/pasj/psaf009

By:

Nakamori, Takeshi;
Hashiyama, Kazuaki;
Sato, Rin;
Shoji, Masayoshi;
Sato, Anju;
Ono, Eiji;
Ouchi, Yuga;
Nakaoka, Tatsuya;
Kawabata, Koji S;
Terasawa, Toshio;
Misawa, Hiroaki;
Tsuchiya, Fuminori;
Takefuji, Kazuhiro;
Murata, Yasuhiro;
Takei, Dai;
Ueno, Kazuki;
Akitaya, Hiroshi

Publication type:

Article

Diffraction modelling of a 2023 March 5 stellar occultation by subkilometer-sized asteroid (98943) 2001 CC21.

Published in:

Publications of the Astronomical Society of Japan, 2024, v. 76, n. 5, p. 940, doi. 10.1093/pasj/psae060

By:

Arimatsu, Ko;
Yoshida, Fumi;
Hayamizu, Tsutomu;
Ida, Miyoshi;
Hashimoto, George L;
Abe, Takashi;
Akitaya, Hiroshi;
Aratani, Akari;
Fukuda, Hidekazu;
Fujita, Yasuhide;
Fujiwara, Takao;
Horikawa, Toshihiro;
Iihoshi, Tamio;
Imamura, Kazuyoshi;
Imazawa, Ryo;
Kasebe, Hisashi;
Kawasaki, Ryosuke;
Kishimoto, Hiroshi;
Mishima, Kazuhisa;
Miyachi, Machiko

Publication type:

Article

Multi-chord observation of stellar occultation by the near-Earth asteroid (3200) Phaethon on 2021 October 3 (UTC) with very high accuracy.

Published in:

Publications of the Astronomical Society of Japan, 2023, v. 75, n. 1, p. 153, doi. 10.1093/pasj/psac096

By:

Yoshida, Fumi;
Hayamizu, Tsutomu;
Miyashita, Kazuhisa;
Watanabe, Hiroyuki;
Yamamura, Hidehito;
Akitaya, Hiroshi;
Asai, Akira;
Fujiwara, Yasunori;
Goto, Tateki;
Hashimoto, George L;
Hatanaka, Akitoshi;
Horaguchi, Toshihiro;
Ida, Miyoshi;
Imamura, Kazuyoshi;
Isobe, Ken;
Ishiguro, Masateru;
Kaizuka, Noboru;
Kasebe, Hisashi;
Kawasaki, Yohei;
Kim, Taewoo

Publication type:

Article

microvariability and wavelength dependence of polarization degree/angle of BL Lacertae in the outburst 2020 to 2021.

Published in:

Publications of the Astronomical Society of Japan, 2023, v. 75, n. 1, p. 1, doi. 10.1093/pasj/psac084

By:

Imazawa, Ryo;
Sasada, Mahito;
Hazama, Natsuko;
Fukazawa, Yasushi;
Kawabata, Koji S;
Nakaoka, Tatsuya;
Akitaya, Hiroshi;
Bohn, Thomas;
Gangopadhyay, Anjasha

Publication type:

Article

Optical and near-infrared photometric and polarimetric monitoring at flaring state of BL Lacertae in 2020–2021.

Published in:

Publications of the Astronomical Society of Japan, 2022, v. 74, n. 5, p. 1041, doi. 10.1093/pasj/psac054

By:

Hazama, Natsuko;
Sasada, Mahito;
Imazawa, Ryo;
Fukazawa, Yasushi;
Kawabata, Koji S;
Nakaoka, Tatsuya;
Akitaya, Hiroshi

Publication type:

Article

ASASSN-18aan: An eclipsing SU UMa-type cataclysmic variable with a 3.6-hr orbital period and a late G-type secondary star.

Published in:

Publications of the Astronomical Society of Japan, 2021, v. 73, n. 5, p. 1209, doi. 10.1093/pasj/psab003

By:

Wakamatsu, Yasuyuki;
Thorstensen, John R;
Kojiguchi, Naoto;
Isogai, Keisuke;
Kimura, Mariko;
Ohnishi, Ryuhei;
Kato, Taichi;
Itoh, Hiroshi;
Sugiura, Yuki;
Sumiya, Sho;
Matsumoto, Hanami;
Ito, Daiki;
Nikai, Kengo;
Akitaya, Hiroshi;
Ishioka, Chihiro;
Oide, Kohei;
Kanai, Takahiro;
Uzawa, Yoshinori;
Oasa, Yumiko;
Tordai, Tamás

Publication type:

Article

Optical follow-up observation for GW event S190510g using Subaru/Hyper Suprime-Cam.

Published in:

Publications of the Astronomical Society of Japan, 2021, v. 73, n. 2, p. 350, doi. 10.1093/pasj/psab002

By:

Ohgami, Takayuki;
Tominaga, Nozomu;
Utsumi, Yousuke;
Niino, Yuu;
Tanaka, Masaomi;
Banerjee, Smaranika;
Hamasaki, Ryo;
Yoshida, Michitoshi;
Terai, Tsuyoshi;
Takagi, Yuhei;
Morokuma, Tomoki;
Sasada, Mahito;
Akitaya, Hiroshi;
Yasuda, Naoki;
Yanagisawa, Kenshi;
Ohsawa, Ryou

Publication type:

Article

Time-resolved spectroscopy and photometry of M dwarf flare star YZ Canis Minoris with OISTER and TESS: Blue asymmetry in the Hα line during the non-white light flare.

Published in:

Publications of the Astronomical Society of Japan, 2021, v. 73, n. 1, p. 44, doi. 10.1093/pasj/psaa098

By:

Maehara, Hiroyuki;
Notsu, Yuta;
Namekata, Kousuke;
Honda, Satoshi;
Kowalski, Adam F;
Katoh, Noriyuki;
Ohshima, Tomohito;
Iida, Kota;
Oeda, Motoki;
Murata, Katsuhiro L;
Yamanaka, Masayuki;
Takagi, Kengo;
Sasada, Mahito;
Akitaya, Hiroshi;
Ikuta, Kai;
Okamoto, Soshi;
Nogami, Daisaku;
Shibata, Kazunari

Publication type:

Article

Multi-wavelength photometry during the 2018 superoutburst of the WZ Sge-type dwarf nova EG Cancri.

Published in:

Publications of the Astronomical Society of Japan, 2021, v. 73, n. 1, p. 1, doi. 10.1093/pasj/psaa089

By:

Kimura, Mariko;
Isogai, Keisuke;
Kato, Taichi;
Kojiguchi, Naoto;
Wakamatsu, Yasuyuki;
Ohnishi, Ryuhei;
Sugiura, Yuki;
Matsumoto, Hanami;
Sumiya, Sho;
Ito, Daiki;
Nikai, Kengo;
Matsumoto, Katsura;
Shugarov, Sergey Yu;
Katysheva, Natalia;
Itoh, Hiroshi;
Dubovsky, Pavol A;
Kudzej, Igor;
Akitaya, Hiroshi;
Oide, Kohei;
Kanai, Takahiro

Publication type:

Article

Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3.

Published in:

Publications of the Astronomical Society of Japan, 2020, v. 72, n. 1, p. N.PAG, doi. 10.1093/pasj/psz122

By:

Uchiyama, Mizuho;
Yamashita, Takuya;
Sugiyama, Koichiro;
Nakaoka, Tatsuya;
Kawabata, Miho;
Itoh, Ryosuke;
Yamanaka, Masayuki;
Akitaya, Hiroshi;
Kawabata, Koji;
Yonekura, Yoshinori;
Saito, Yu;
Motogi, Kazuhito;
Fujisawa, Kenta

Publication type:

Article

Comparison of polarization at two lunar eclipse events.

Published in:

Publications of the Astronomical Society of Japan, 2019, v. 71, n. 2, p. N.PAG, doi. 10.1093/pasj/psz017

By:

Takahashi, Jun;
Itoh, Yoichi;
Watanabe, Makoto;
Akitaya, Hiroshi;
Takaki, Katsutoshi;
Kawabata, Koji S;
Itoh, Ryosuke;
Oasa, Yumiko

Publication type:

Article

Extended optical/NIR observations of Type Iax supernova 2014dt: Possible signatures of a bound remnant.

Published in:

Publications of the Astronomical Society of Japan, 2018, v. 70, n. 6, p. N.PAG, doi. 10.1093/pasj/psy116

By:

Kawabata, Miho;
Kawabata, Koji S;
Maeda, Keiich;
Yamanaka, Masayuki;
Nakaoka, Tatsuya;
Takaki, Katsutoshi;
Fukushima, Daiki;
Kojiguchi, Naoto;
Masumoto, Kazunari;
Matsumoto, Katsura;
Akitaya, Hiroshi;
Itoh, Ryosuke;
Kanda, Yuka;
Moritani, Yuki;
Takata, Koji;
Uemura, Makoto;
Ui, Takahiro;
Yoshida, Michitoshi;
Hattori, Takashi;
Lee, Chien-Hsiu

Publication type:

Article

OISTER optical and near-infrared monitoring observations of peculiar radio-loud active galactic nucleus SDSSJ110006.07+442144.3.

Published in:

Publications of the Astronomical Society of Japan, 2017, v. 69, n. 5, p. 1, doi. 10.1093/pasj/psx075

By:

Tomoki MOROKUMA;
Masaomi TANAKA;
TANAKA, Yasuyuki T.;
Ryosuke ITOH;
Nozomu TOMINAGA;
GANDHI, Poshak;
PIAN, Elena;
MAZZALI, Paolo;
Kouji OHTA;
Emiko MATSUMOTO;
Takumi SHIBATA;
Hinako AKIMOTO;
Hiroshi AKITAYA;
ALI, Gamal B.;
Tsutomu AOKI;
DOI, Mamoru;
EBISUDA, Nana;
ESSAM, Ahmed;
Kenta FUJISAWA;
Hideo FUKUSHIMA

Publication type:

Article

A measurement of interstellar polarization and an estimation of Galactic extinction for the direction of the X-ray black hole binary V404 Cygni.

Published in:

Publications of the Astronomical Society of Japan, 2017, v. 69, n. 2, p. 1, doi. 10.1093/pasj/psw130

By:

Ryosuke ITOH;
TANAKA, Yasuyuki T.;
KAWABATA, Koji S.;
Makoto UEMURA;
Makoto WATANABE;
Yasushi FUKAZAWA;
Yuka KANDA;
Hiroshi AKITAYA;
Yuki MORITANI;
Tatsuya NAKAOKA;
Miho KAWABATA;
Kensei SHIKI;
Michitoshi YOSHIDA;
Yumiko OASA;
Jun TAKAHASHI

Publication type:

Article

OISTER optical and near-infrared observations of the super-Chandrasekhar supernova candidate SN2012dn: Dust emission from the circumstellar shell.

Published in:

Publications of the Astronomical Society of Japan, 2016, v. 68, n. 5, p. 1, doi. 10.1093/pasj/psw047

By:

Masayuki YAMANAKA;
Keiichi MAEDA;
Masaomi TANAKA;
Nozomu TOMINAGA;
Koji S. KAWABATA;
Katsutoshi TAKAKI;
Miho KAWABATA;
Tatsuya NAKAOKA;
Issei UENO;
Hiroshi AKITAYA;
Takahiro NAGAYAMA;
Jun TAKAHASHI;
Satoshi HONDA;
Toshihiro OMODAKA;
Ryo MIYANOSHITA;
Takashi NAGAO;
Makoto WATANABE;
Mizuki ISOGAI;
Akira ARAI;
Ryosuke ITOH

Publication type:

Article

Variable optical polarization during high state in γ-ray loud, narrow-line Seyfert 1 galaxy 1H 0323+342.

Published in:

Publications of the Astronomical Society of Japan, 2014, v. 66, n. 6, p. 1, doi. 10.1093/pasj/psu095

By:

Itoh, Ryosuke;
Tanaka, Yasuyuki T.;
Akitaya, Hiroshi;
Uemura, Makoto;
Fukazawa, Yasushi;
Inoue, Yoshiyuki;
Doi, Akihiro;
Arai, Akira;
Hanayama, Hidekazu;
Hashimoto, Osamu;
Hayashi, Masahiko;
Izumiura, Hideyuki;
Kanda, Yuka;
Kawabata, Koji S.;
Kawaguchi, Kenji;
Kawai, Nobuyuki;
Kinugasa, Kenzo;
Kuroda, Daisuke;
Miyaji, Takeshi;
Moritani, Yuki

Publication type:

Article