Zobrazeno 1 - 10
of 324
pro vyhledávání: '"Katsukawa, Yukio"'
Understanding the magnetic fields of the Sun is essential for unraveling the underlying mechanisms driving solar activity. Integrating topological data analysis techniques into these investigations can provide valuable insights into the intricate str
Externí odkaz:
http://arxiv.org/abs/2401.16829
We suggest a method that evaluates the horizontal velocity in the solar photosphere with easily observable values using a combination of neural network and radiative magnetohydrodynamics simulations. All three-component velocities of thermal convecti
Externí odkaz:
http://arxiv.org/abs/2308.16424
Autor:
Kubo, Masahito, Katsukawa, Yukio, Expósito, David Hernández, Gómez, Antonio Sánchez, Jimenéz, María Balaguer, Suárez, David Orozco, Fernández, José M. Morales, del Moral, Beatriz Aparicio, Mantas, Antonio J. Moreno, Martínez, Eduardo Bailón, Iniesta, Jose Carlos del Toro, Kawabata, Yusuke, Noda, Carlos Quintero, Oba, Takayoshi, Ishikawa, Ryohtaroh T., Shimizu, Toshifumi
The Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) has been developed for the third flight of the SUNRISE balloon-borne stratospheric solar observatory. The aim of SCIP is to reveal the evolution of three-dimensional magnetic fields in the
Externí odkaz:
http://arxiv.org/abs/2307.16551
Autor:
Oba, Takayoshi, Shimizu, Toshifumi, Katsukawa, Yukio, Kubo, Masahito, Kawabata, Yusuke, Hara, Hirohisa, Uraguchi, Fumihiro, Tsuzuki, Toshihiro, Tamura, Tomonori, Shinoda, Kazuya, Kodeki, Kazuhide, Fukushima, Kazuhiko, Fernández, José Miguel Morales, Gómez, Antonio Sánchez, Jimenéz, María Balaguer, Expósito, David Hernández, Gandorfer, Achim
Publikováno v:
Solar Physics 2022
We developed a scan mirror mechanism (SMM) that enable a slit-based spectrometer or spectropolarimeter to precisely and quickly map an astronomical object. The SMM, designed to be installed in the optical path preceding the entrance slit, tilts a fol
Externí odkaz:
http://arxiv.org/abs/2207.13864
Autor:
Ishikawa, Ryohtaroh T., Nakata, Motoki, Katsukawa, Yukio, Masada, Youhei, Riethmüller, Tino L.
Publikováno v:
A&A 658, A142 (2022)
The dynamics in the photosphere is governed by the multi-scale turbulent convection termed as granulation and supergranulation. It is important to derive 3-dimensional velocity vectors to understand the nature of the turbulent convection. However, it
Externí odkaz:
http://arxiv.org/abs/2111.12518
Autor:
Gošić, Milan, Rubio, Luis R. Bellot, Cheung, Mark C. M., Suárez, David Orozco, Katsukawa, Yukio, Iniesta, Jose Carlos Del Toro
Small-scale internetwork (IN) magnetic fields are considered to be the main building blocks of the quiet Sun magnetism. For this reason, it is crucial to understand how they appear on the solar surface. Here, we employ a high-resolution, high-sensiti
Externí odkaz:
http://arxiv.org/abs/2111.03208
Autor:
Rast, Mark P., González, Nazaret Bello, Rubio, Luis Bellot, Cao, Wenda, Cauzzi, Gianna, DeLuca, Edward, De Pontieu, Bart, Fletcher, Lyndsay, Gibson, Sarah E., Judge, Philip G., Katsukawa, Yukio, Kazachenko, Maria D., Khomenko, Elena, Landi, Enrico, Pillet, Valentin Martínez, Petrie, Gordon J. D., Qiu, Jiong, Rachmeler, Laurel A., Rempel, Matthias, Schmidt, Wolfgang, Scullion, Eamon, Sun, Xudong, Welsch, Brian T., Andretta, Vincenzo, Antolin, Patrick, Ayres, Thomas R., Balasubramaniam, K. S., Ballai, Istvan, Berger, Thomas E., Bradshaw, Stephen J., Carlsson, Mats, Casini, Roberto, Centeno, Rebecca, Cranmer, Steven R., DeForest, Craig, Deng, Yuanyong, Erdélyi, Robertus, Fedun, Viktor, Fischer, Catherine E., Manrique, Sergio J. González, Hahn, Michael, Harra, Louise, Henriques, Vasco M. J., Hurlburt, Neal E., Jaeggli, Sarah, Jafarzadeh, Shahin, Jain, Rekha, Jefferies, Stuart M., Keys, Peter H., Kowalski, Adam F., Kuckein, Christoph, Kuhn, Jeffrey R., Liu, Jiajia, Liu, Wei, Longcope, Dana, McAteer, R. T. James, McIntosh, Scott W., McKenzie, David E., Miralles, Mari Paz, Morton, Richard J., Muglach, Karin, Nelson, Chris J., Panesar, Navdeep K., Parenti, Susanna, Parnell, Clare E., Poduval, Bala, Reardon, Kevin P., Reep, Jeffrey W., Schad, Thomas A., Schmit, Donald, Sharma, Rahul, Socas-Navarro, Hector, Srivastava, Abhishek K., Sterling, Alphonse C., Suematsu, Yoshinori, Tarr, Lucas A., Tiwari, Sanjiv, Tritschler, Alexandra, Verth, Gary, Vourlidas, Angelos, Wang, Haimin, Wang, Yi-Ming, NSO, project, DKIST, scientists, DKIST instrument, Group, the DKIST Science Working, Community, the DKIST Critical Science Plan
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of the Sun and its atmosphere. The first-light DKIST images, released pu
Externí odkaz:
http://arxiv.org/abs/2008.08203
Coronal rain corresponds to cool and dense clumps in the corona accreting towards the solar surface, and is often observed above solar active regions. They are generally thought to be produced by thermal instability in the corona and their lifetime i
Externí odkaz:
http://arxiv.org/abs/2003.13214
Autor:
Ishikawa, Ryohtaroh T., Katsukawa, Yukio, Oba, Takayoshi, Nakata, Motoki, Nagaoka, Kenichi, Kobayashi, Tatsuya
In the quiet regions on the solar surface, turbulent convective motions of granulation play an important role in creating small-scale magnetic structures, as well as in energy injection into the upper atmosphere. The turbulent nature of granulation c
Externí odkaz:
http://arxiv.org/abs/2001.04632
Publikováno v:
In Acta Astronautica September 2023 210:339-349