Zobrazeno 1 - 10
of 21 437
pro vyhledávání: '"A Maehara"'
Autor:
Namekata, Kosuke, Ikuta, Kai, Petit, Pascal, Airapetian, Vladimir S., Vidotto, Aline A., Heinzel, Petr, Wollmann, Jiří, Maehara, Hiroyuki, Notsu, Yuta, Inoue, Shun, Marsden, Stephen, Morin, Julien, Jeffers, Sandra V., Neiner, Coralie, Paudel, Rishi R., Avramova-Boncheva, Antoaneta A., Gendreau, Keith, Shibata, Kazunari
EK Draconis, a nearby young solar-type star (G1.5V, 50-120 Myr), is known as one of the best proxies for inferring the environmental conditions of the young Sun. The star frequently produces superflares and Paper I presented the first evidence of an
Externí odkaz:
http://arxiv.org/abs/2410.05523
Autor:
Günther, Hans Moritz, Pasham, Dheeraj, Binks, Alexander, Czesla, Stefan, Enoto, Teruaki, Fausnaugh, Michael, Hambsch, Franz-Josef, Inoue, Shun, Maehara, Hiroyuki, Notsu, Yuta, Robrade, Jan, Schmitt, J. H. M. M., Schneider, P. C.
Many giant stars are magnetically active, which causes rotational variability, chromospheric emission lines, and X-ray emission. Large outbursts in these emission features can set limits on the magnetic field strength and thus constrain the mechanism
Externí odkaz:
http://arxiv.org/abs/2410.03616
Autor:
Tampo, Yusuke, Kato, Taichi, Isogai, Keisuke, Kimura, Mariko, Kojiguchi, Naoto, Nogami, Daisaku, Ito, Junpei, Shibata, Masaaki, Yamanaka, Masayuki, Taguchi, Kenta, Maehara, Hiroyuki, Itoh, Hiroshi, Matsumoto, Katsura, Nakagawa, Momoka, Nishida, Yukitaka, Dvorak, Shawn, Murata, Katsuhiro L., Hosokawa, Ryohei, Imai, Yuri, Ito, Naohiro, Niwano, Masafumi, Sato, Shota, Noto, Ryotaro, Yamaguchi, Ryodai, Schramm, Malte, Oasa, Yumiko, Kanai, Takahiro, Sasaki, Yu, Tordai, Tamás, Vanmunster, Tonny, Kiyota, Seiichiro, Katysheva, Nataly, Shugarov, Sergey Yu., Zubareva, Alexandra M., Antipin, Sergei, Ikonnikova, Natalia, Belinski, Alexandr, Dubovsky, Pavol A., Medulka, Tomáš, Takahashi, Jun, Takayama, Masaki, Ohshima, Tomohito, Saito, Tomoki, Tozuka, Miyako, Sako, Shigeyuki, Tanaka, Masaomi, Tominaga, Nozomu, Horiuchi, Takashi, Hanayama, Hidekazu, Reichart, Daniel E., Kouprianov, Vladimir V., Davidson Jr, James W., Caton, Daniel B., Romanov, Filipp D., Lane, David J., Hambsch, Franz-josef, Narita, Norio, Fukui, Akihiko, Ikoma, Masahiro, Tamura, Motohide, Kawabata, Koji S., Nakaoka, Tatsuya, Imazawa, Ryo
We present a detailed study of the MASTER OT J030227.28+191754.5 outburst in 2021-2022, reaching an amplitude of 10.2 mag and a duration of 60 d. The detections of (1) the double-peaked optical emission lines, and (2) the early and ordinary superhump
Externí odkaz:
http://arxiv.org/abs/2408.13783
We study $\omega$-weak equivalences between weak $\omega$-categories in the sense of Batanin-Leinster. Our $\omega$-weak equivalences are strict $\omega$-functors satisfying essential surjectivity at every dimension, and when restricted to those betw
Externí odkaz:
http://arxiv.org/abs/2406.13240
Autor:
Murai, Yuta, Tanaka, Masaomi, Kawabata, Miho, Taguchi, Kenta, Teja, Rishabh Singh, Nakaoka, Tatsuya, Maeda, Keiichi, Kawabata, Koji S., Nagao, Takashi, Moriya, Takashi J., Sahu, D. K., Anupama, G. C., Tominaga, Nozomu, Morokuma, Tomoki, Imazawa, Ryo, Inutsuka, Satoko, Isogai, Keisuke, Kasuga, Toshihiro, Kobayashi, Naoto, Kondo, Sohei, Maehara, Hiroyuki, Mori, Yuki, Niino, Yuu, Ogawa, Mao, Ohsawa, Ryou, Okumura, Shin-ichiro, Saito, Sei, Sako, Shigeyuki, Takahashi, Hidenori, Uno, Kohki, Yamanaka, Masayuki
We present photometric, spectroscopic and polarimetric observations of the intermediate-luminosity Type IIP supernova (SN) 2021gmj from 1 to 386 days after the explosion. The peak absolute V-band magnitude of SN 2021gmj is -15.5 mag, which is fainter
Externí odkaz:
http://arxiv.org/abs/2401.05837
Autor:
Inoue, Shun, Enoto, Teruaki, Namekata, Kosuke, Notsu, Yuta, Honda, Satoshi, Maehara, Hiroyuki, Zhang, Jiale, Lu, Hong-Peng, Uchida, Hiroyuki, Tsuru, Takeshi Go, Nogami, Daisaku, Shibata, Kazunari
We conducted 4-night multiwavelength observations of an active M-dwarf star EV Lac on 2022 October 24$-$27 with simultaneous coverage of soft X-rays (NICER; 0.2$-$12 $\mathrm{keV}$, Swift XRT; 0.2$-$10 $\mathrm{keV}$), near-ultraviolet (Swift UVOT/UV
Externí odkaz:
http://arxiv.org/abs/2401.00399
Autor:
Maehara, Shota, Numata, Yasuhide
In this article, we consider the multiarrangements whose underlying arrangements are the Coxeter arrangement of type $B_2$. For some special multiplicities, we give an explicit description of bases for the derivation modules. As an application, we al
Externí odkaz:
http://arxiv.org/abs/2312.06356
Recently, pretraining methods for the Graph Neural Networks (GNNs) have been successful at learning effective representations from unlabeled graph data. However, most of these methods rely on pairwise relations in the graph and do not capture the und
Externí odkaz:
http://arxiv.org/abs/2311.11368
Autor:
Namekata, Kosuke, Airapetian, Vladimir S., Petit, Pascal, Maehara, Hiroyuki, Ikuta, Kai, Inoue, Shun, Notsu, Yuta, Paudel, Rishi R., Arzoumanian, Zaven, Avramova-Boncheva, Antoaneta A., Gendreau, Keith, Jeffers, Sandra V., Marsden, Stephen, Morin, Julien, Neiner, Coralie, Vidotto, Aline A., Shibata, Kazunari
Young solar-type stars frequently produce superflares, serving as a unique window into the young Sun-Earth environments. Large solar flares are closely linked to coronal mass ejections (CMEs) associated with filament/prominence eruptions, but its obs
Externí odkaz:
http://arxiv.org/abs/2311.07380
Autor:
Taguchi, Kenta, Maeda, Keiichi, Maehara, Hiroyuki, Tajitsu, Akito, Yamanaka, Masayuki, Arai, Akira, Isogai, Keisuke, Shibata, Masaaki, Tampo, Yusuke, Kojiguchi, Naoto, Nogami, Daisaku, Kato, Taichi
The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the properties of V1405 Cas (Nova Cassiopeiae 2021), which is an outlier given
Externí odkaz:
http://arxiv.org/abs/2310.08641