Zobrazeno 1 - 10
of 390
pro vyhledávání: '"Ebihara Yusuke"'
Autor:
Hayakawa, Hisashi, Ebihara, Yusuke, Mishev, Alexander, Koldobskiy, Sergey, Kusano, Kanya, Bechet, Sabrina, Yashiro, Seiji, Iwai, Kazumasa, Shinbori, Atsuki, Mursula, Kalevi, Miyake, Fusa, Shiota, Daikou, Silveira, Marcos V. D., Stuart, Robert, Oliveira, Denny M., Akiyama, Sachiko, Ohnishi, Kouji, Miyoshi, Yoshizumi
In May 2024, the scientific community observed intense solar eruptions that resulted in an extreme geomagnetic storm and auroral extension, highlighting the need to document and quantify these events. This study mainly focuses on their quantification
Externí odkaz:
http://arxiv.org/abs/2407.07665
Autor:
Zhang, Chi, Nilsson, Hans, Ebihara, Yusuke, Yamauchi, Masatoshi, Persson, Moa, Rong, Zhaojin, Zhong, Jun, Dong, Chuanfei, Chen, Yuxi, Zhou, Xuzhi, Sun, Yixin, Harada, Yuki, Halekas, Jasper, Xu, Shaosui, Futaana, Yoshifumi, Shi, Zhen, Yuan, Chongjing, Yun, Xiaotong, Fu, Song, Gao, Jiawei, Holmström, Mats, Wei, Yong, Barabash, Stas
Mars lacks a global magnetic field, and instead possesses small-scale crustal magnetic fields, making its magnetic environment fundamentally different from intrinsic magnetospheres like those of Earth or Saturn. Here we report the discovery of magnet
Externí odkaz:
http://arxiv.org/abs/2311.06151
Publikováno v:
Geoscience Data Journal, 2021
Solar Cycle 19 was probably the greatest solar cycle over the last four centuries and significantly disrupted the solar-terrestrial environments with a number of solar eruptions and resultant geomagnetic storms. At its peak, the International Geophys
Externí odkaz:
http://arxiv.org/abs/2112.09432
Autor:
Hayakawa, Hisashi, Nevanlinna, Heikki, Blake, Séan P., Ebihara, Yusuke, Bhaskar, Ankush T., Miyoshi, Yoshizumi
Publikováno v:
2021, The Astrophysical Journal
The Carrington storm in 1859 September has been arguably identified as the greatest geomagnetic storm ever recorded. However, its exact magnitude and chronology remain controversial, while their source data have been derived from the Colaba H magneto
Externí odkaz:
http://arxiv.org/abs/2109.13020
Autor:
Hayakawa, Hisashi, Hattori, Kentaro, Pevtsov, Alexei A., Ebihara, Yusuke, Shea, Margaret A., McCracken, Ken G., Daglis, Ioannis A., Bhaskar, Ankush, Ribeiro, Paulo, Knipp, Delores J.
Publikováno v:
The Astrophysical Journal, 2020
Major solar eruptions occasionally direct interplanetary coronal mass ejections (ICMEs) to Earth and cause significant geomagnetic storms and low-latitude aurorae. While single extreme storms are of significant threats to the modern civilization, sto
Externí odkaz:
http://arxiv.org/abs/2010.15762
Autor:
Hayakawa, Hisashi, Blake, Sean P., Bhaskar, Ankush, Hattori, Kentaro, Oliveira, Denny M., Ebihara, Yusuke
Publikováno v:
The Astrophysical Journal, 2020
Given the infrequency of extreme geomagnetic storms, it is significant to note the concentration of three extreme geomagnetic storms in 1941, whose intensities ranked fourth, twelfth, and fifth within the aa index between 1868-2010. Among them, the g
Externí odkaz:
http://arxiv.org/abs/2010.00452
Publikováno v:
Astrophysical Journal, 2020
The Maunder Minimum (1645-1715) is currently considered the only grand minimum within telescopic sunspot observations since 1610. During this epoch, the Sun was extremely quiet and unusually free from sunspots. However, despite reduced frequency, can
Externí odkaz:
http://arxiv.org/abs/2008.13739
Publikováno v:
Earth, Planets and Space, 72, 122, 2020
The importance of the investigation of magnetic superstorms is not limited to academic interest, because these superstorms can cause catastrophic impact on the modern civilisation due to our increasing dependency on technological infrastructure. In t
Externí odkaz:
http://arxiv.org/abs/2008.13180
Autor:
Hayakawa, Hisashi, Ebihara, Yusuke
Publikováno v:
Solar-Terrestrial Environment Prediction, 2020
This section shows an overview of a recent development of the studies on great space weather events in history. Its discussion starts from the Carrington event and compare its intensity with the extreme storms within the coverage of the regular magne
Externí odkaz:
http://arxiv.org/abs/2003.06020
Autor:
Hayakawa, Hisashi, Ribeiro, Paulo, Vaquero, José M., Gallego, María Cruz, Knipp, Delores J., Mekhaldi, Florian, Bhaskar, Ankush, Oliveira, Denny M., Notsu, Yuta, Carrasco, Víctor M. S., Caccavari, Ana, Veenadhari, Bhaskara, Mukherjee, Shyamoli, Ebihara, Yusuke
Publikováno v:
The Astrophysical Journal Letters, 2020
While the Sun is generally more eruptive during its maximum and declining phases, observational evidence shows certain cases of powerful solar eruptions during the quiet phase of the solar activity. Occurring in the weak Solar Cycle 14 just after its
Externí odkaz:
http://arxiv.org/abs/2001.04575