Zobrazeno 1 - 10
of 919
pro vyhledávání: '"Takahashi, ichiro"'
Autor:
Horiuchi, Takashi, Toba, Yoshiki, Misawa, Toru, Murata, Katsuhiro L., Isogai, Keisuke, Yatsu, Yoichi, Takahashi, Ichiro, Sasada, Mahito, Niwano, Masafumi, Higuchi, Narikazu, Hayatsu, Shunsuke, Seki, Hibiki, Oasa, Yumiko, Sato, Rikuto
The extremely luminous infrared galaxy (ELIRG), WISE J090924.01+000211.1 (hereafter; WISE J0909+0002, $z=1.87$) is an extraordinary object with a quasar aspect. This study performs monitoring observations of WISE J0909+0002 with the 105 cm Murikabush
Externí odkaz:
http://arxiv.org/abs/2412.19573
Autor:
Yoshitake, Tomohiro, Shidatsu, Megumi, Ueda, Yoshihiro, Nogami, Daisaku, Murata, Katsuhiro L., Higuchi, Narikazu, Isogai, Keisuke, Maehara, Hiroyuki, Mineshige, Shin, Negoro, Hitoshi, Kawai, Nobuyuki, Yatsu, Yoichi, Sasada, Mahito, Takahashi, Ichiro, Niwano, Masafumi, Saito, Tomoki, Takayama, Masaki, Oasa, Yumiko, Takarada, Takuya, Shigeyoshi, Takumi, Collaboration, OISTER
To understand the evolution of global accretion disk structure in the ``rebrightening'' phase of MAXI J1820$+$070, we perform a comprehensive analysis of its near infrared/optical/UV to X-ray spectral energy distribution (SED) utilizing data obtained
Externí odkaz:
http://arxiv.org/abs/2412.11445
Autor:
Toshikage, Seiji, Tanaka, Masaomi, Yasuda, Naoki, Moriya, Takashi J., Takahashi, Ichiro, Jiang, Ji-an, Kokubo, Mitsuru, Matsumoto, Naoki, Maeda, Keiichi, Morokuma, Tomoki, Suzuki, Nao, Tominaga, Nozomu
Recent high-cadence transient surveys have discovered rapid transients whose light curve timescales are shorter than those of typical supernovae. In this paper, we present a systematic search for rapid transients at medium-high redshifts among 3381 s
Externí odkaz:
http://arxiv.org/abs/2410.10955
Autor:
Niwano, Masafumi, Fausnaugh, Michael M., Lau, Ryan M., De, Kishalay, Soria, Roberto, Ricker, George R., Vanderspek, Roland, Ashley, Michael C. B., Earley, Nicholas, Hankins, Matthew J., Kasliwal, Mansi M., Moore, Anna M., Soon, Jamie, Travouillon, Tony, Sasada, Mahito, Takahashi, Ichiro, Yatsu, Yoichi, Kawai, Nobuyuki
The mechanism of X-ray outbursts in Be X-ray binaries remains a mystery, and understanding their circumstellar disks is crucial for a solution of the mass-transfer problem. In particular, it is important to identify the Be star activities (e.g., puls
Externí odkaz:
http://arxiv.org/abs/2409.09581
Autor:
Oshikiri, Kakeru, Tanaka, Masaomi, Tominaga, Nozomu, Morokuma, Tomoki, Takahashi, Ichiro, Tampo, Yusuke, Hamidani, Hamid, Arima, Noriaki, Arimatsu, Ko, Kasuga, Toshihiro, Kobayashi, Naoto, Kondo, Sohei, Mori, Yuki, Niino, Yuu, Ohsawa, Ryou, Okumura, Shin-ichiro, Sako, Shigeyuki, Takahashi, Hidenori
The population of optical transients evolving within a time-scale of a few hours or a day (so-called fast optical transients, FOTs) has recently been debated extensively. In particular, our understanding of extragalactic FOTs and their rates is limit
Externí odkaz:
http://arxiv.org/abs/2310.10066
Autor:
Takahashi, Ichiro, Hamasaki, Ryo, Ueda, Naonori, Tanaka, Masaomi, Tominaga, Nozomu, Sako, Shigeyuki, Ohsawa, Ryou, Yoshida, Naoki
We present a deep neural network Real/Bogus classifier that improves classification performance in the Tomo-e Gozen transient survey by handling label errors in the training data. In the wide-field, high-frequency transient survey with Tomo-e Gozen,
Externí odkaz:
http://arxiv.org/abs/2206.12478
Autor:
Moriya, Takashi J., Jiang, Ji-an, Yasuda, Naoki, Kokubo, Mitsuru, Kawana, Kojiro, Maeda, Keiichi, Pan, Yen-Chen, Quimby, Robert M., Suzuki, Nao, Takahashi, Ichiro, Tanaka, Masaomi, Tominaga, Nozomu, Nomoto, Ken'ichi, Cooke, Jeff, Galbany, Lluis, Gonzalez-Gaitan, Santiago, Lee, Chien-Hsiu, Pignata, Giuliano
Publikováno v:
The Astrophysical Journal, Volume 908, Issue 2, id.249, 13 pp. (2021)
Some supernovae such as pair-instability supernovae are predicted to have the duration of more than a year in the observer frame. To constrain the rates of supernovae lasting for more than a year, we conducted a long-term deep transient survey using
Externí odkaz:
http://arxiv.org/abs/2012.00171