Zobrazeno 1 - 10
of 82
pro vyhledávání: '"OKAMOTO, Takenori J."'
Autor:
Li, Hao, Alemán, Tanausú del Pino, Bueno, Javier Trujillo, Ishikawa, Ryohko, Ballester, Ernest Alsina, McKenzie, David E., Belluzzi, Luca, Song, Donguk, Okamoto, Takenori J., Kobayashi, Ken, Rachmeler, Laurel A., Bethge, Christian, Auchère, Frédéric
We apply the HanleRT Tenerife Inversion Code to the spectro-polarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter. This suborbital space experiment measured the variation with wavelength of the four Stokes parameters in the
Externí odkaz:
http://arxiv.org/abs/2408.06094
Autor:
Ishikawa, Ryohko, Bueno, Javier Trujillo, Ballester, Ernest Alsina, Belluzzi, Luca, Alemán, Tanausú del Pino, McKenzie, David E., Auchère, Frédéric, Kobayashi, Ken, Okamoto, Takenori J., Rachmeler, Laurel A., Song, Donguk
Radiative transfer investigations of the solar Mg II h and k resonance lines around 280~nm showed that, while their circular polarization (Stokes V) signals arise from the Zeeman effect, the linear polarization profiles (Stokes Q and U) are dominated
Externí odkaz:
http://arxiv.org/abs/2302.03303
Autor:
Li, Hao, Alemán, T. del Pino, Bueno, J. Trujillo, Ishikawa, R., Ballester, E. Alsina, McKenzie, David E., Auchère, Frédéric, Kobayashi, Ken, Okamoto, Takenori J., Rachmeler, Laurel A., Song, Donguk
We apply the Tenerife Inversion Code (TIC) to the plage spectropolarimetric observations obtained by the Chromospheric LAyer SpectroPolarimeter (CLASP2). These unprecedented data consist of full Stokes profiles in the spectral region around the Mg II
Externí odkaz:
http://arxiv.org/abs/2301.12792
Autor:
Ishikawa, Ryohko, Bueno, Javier Trujillo, Aleman, Tanausu del Pino, Okamoto, Takenori J., McKenzie, David E., Auchere, Frederic, Kano, Ryouhei, Song, Donguk, Yoshida, Masaki, Rachmeler, Laurel A., Kobayashi, Ken, Hara, Hirohisa, Kubo, Masahito, Narukage, Noriyuki, Sakao, Taro, Shimizu, Toshifumi, Suematsu, Yoshinori, Bethge, Christian, De Pontieu, Bart, Dalda, Alberto Sainz, Vigil, Genevieve D., Winebarger, Amy, Ballester, Ernest Alsina, Belluzzi, Luca, Stepan, Jiri, Ramos, Andres Asensio, Carlsson, Mats, Leenaarts, Jorrit
Publikováno v:
Science Advances, Vol. 7, no. 8, eabe8406, 2021
Routine ultraviolet imaging of the Sun's upper atmosphere shows the spectacular manifestation of solar activity; yet we remain blind to its main driver, the magnetic field. Here we report unprecedented spectropolarimetric observations of an active re
Externí odkaz:
http://arxiv.org/abs/2103.01583
Autor:
Shimojo, Masumi, Kawate, Tomoko, Okamoto, Takenori J., Yokoyama, Takaaki, Narukage, Noriyuki, Sakao, Taro, Iwai, Kazumasa, Fleishman, Gregory D., Shibata, Kazunari
Publikováno v:
Astrophysical Journal Letters, Vol. 888, L28 (2020)
We succeeded in observing two large spicules simultaneously with the Atacama Large Millimeter/submillimeter Array (ALMA), the Interface Region Imaging Spectrograph (IRIS), and the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observat
Externí odkaz:
http://arxiv.org/abs/1912.05714
Autor:
Tei, Akiko, Gunar, Stanislav, Heinzel, Petr, Okamoto, Takenori J., Stepan, Jiri, Jejcic, Sonja, Shibata, Kazunari
We investigated the off-limb spicules observed in the Mg II h and k lines by IRIS in a solar polar coronal hole. We analyzed the large dataset of obtained spectra to extract quantitative information about the line intensities, shifts, and widths. The
Externí odkaz:
http://arxiv.org/abs/1911.12243
We report the results of the Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of the solar chromosphere on the southern polar limb. Coordinated observations with the Interface Region Imaging Spectrograph (IRIS) are also conducted. AL
Externí odkaz:
http://arxiv.org/abs/1807.01411
Autor:
Tei, Akiko, Sakaue, Takahito, Okamoto, Takenori J., Kawate, Tomoko, Heinzel, Petr, Ueno, Satoru, Asai, Ayumi, Ichimoto, Kiyoshi, Shibata, Kazunari
We performed coordinated observations of AR 12205, which produced a C-class flare on 2014 November 11, with the Interface Region Imaging Spectrograph (IRIS) and the Domeless Solar Telescope (DST) at Hida Observatory. Using spectral data in the Si IV
Externí odkaz:
http://arxiv.org/abs/1803.05237
Autor:
Okamoto, Takenori J., Sakurai, Takashi
Sunspots are the most notable structure on the solar surface with strong magnetic fields. The field is generally strongest in a dark area (umbra), but sometimes stronger fields are found in non-dark regions such as a penumbra and a light bridge. The
Externí odkaz:
http://arxiv.org/abs/1712.08700
Fine-structure dynamics in solar prominences holds critical clues to understanding their physical nature of significant space-weather implications. We report evidence of rotational motions of horizontal helical threads in two active-region prominence
Externí odkaz:
http://arxiv.org/abs/1608.00123