Zobrazeno 1 - 10
of 445
pro vyhledávání: '"Itoh Satoshi"'
Potentially habitable planets around nearby stars less massive than solar-type stars could join targets of the spectroscopy of the planetary reflected light with future space telescopes. However, the orbits of most of these planets occur near the dif
Externí odkaz:
http://arxiv.org/abs/2403.16415
Autor:
Itoh, Satoshi, Matsuo, Taro, Ota, Shunsuke, Hara, Kensuke, Ikeda, Yuji, Kojima, Reiki, Yamada, Toru, Sumi, Takahiro
We performed an experimental verification of a coronagraph. As a result, we confirmed that, at the focal region where the planetary point spread function exists, the coronagraph system mitigates the raw contrast of a star-planet system by at least $1
Externí odkaz:
http://arxiv.org/abs/2306.01225
Autor:
Itoh, Satoshi, Ishihara, Daisuke, Wada, Takehiko, Nakagawa, Takao, Oyabu, Shinki, Kaneda, Hidehiro, Hirahara, Yasuhiro, consortium, the SMI
We performed wave-optics-based numerical simulations at mid-infrared wavelengths to investigate how the presence or absence of entrance slits and optical aberrations affect the spectral resolving power $R$ of a compact, high-spectral-resolving-power
Externí odkaz:
http://arxiv.org/abs/2206.02379
Autor:
Itoh, Satoshi, Matsuo, Taro
Future high-contrast imaging spectroscopy with a large segmented telescope will be able to detect atmospheric molecules of Earth-like planets around G- or K-type main-sequence stars. Increasing the number of target planets will require a coronagraph
Externí odkaz:
http://arxiv.org/abs/2204.03164
Autor:
Fujioka Hiroyuki, Brinkmann Kai-Thomas, Friedrich Stefan, Geissel Hans, Hayano Ryugo S., Hirenzaki Satoru, Itahashi Kenta, Itoh Satoshi, Jido Daisuke, Metag Volker, Nagahiro Hideko, Nanova Mariana, Nishi Takahiro, Okochi Kota, Outa Haruhiko, Suzuki Ken, Suzuki Takatoshi, Tanaka Yoshiki K., Watanabe Yuni N., Weick Helmut
Publikováno v:
EPJ Web of Conferences, Vol 66, p 09006 (2014)
In order to investigate a possible mass reduction of an η′ meson at finite density, a series of missing-mass spectroscopy experiments of η′-nucleus bound states with the 12C(p,d) reaction is planned at GSI and FAIR. A semi-exclusive measurement
Externí odkaz:
https://doaj.org/article/621a976229454c01b201d54e88bc1adf
Autor:
Tanaka Yoshiki K., Brinkmann Kai-Thomas, Friedrich Stefan, Fujioka Hiroyuki, Geissel Hans, Hayano Ryugo S., Hirenzaki Satoru, Itahashi Kenta, Itoh Satoshi, Jido Daisuke, Metag Volker, Nagahiro Hideko, Nanova Mariana, Nishi Takahiro, Okochi Kota, Outa Haruhiko, Suzuki Ken, Suzuki Takatoshi, Watanabe Yuni N., Weick Helmut
Publikováno v:
EPJ Web of Conferences, Vol 66, p 09019 (2014)
We plan a missing-mass spectroscopy experiment of η′ mesic nuclei with the 12C(p,d)η′⊗11C reaction to study in-medium properties of the η′ meson. In nuclear medium, due to restoration of chiral symmetry, the mass of the η′ meson may be
Externí odkaz:
https://doaj.org/article/2dc173d06ef444a6be8afccb2e8cc713
Autor:
Nishi Takahiro, Berg Georg P. A., Dozono Masanori, Fujioka Hiroyuki, Fukuda Naoki, Furuno Tatsuya, Geissel Hans, Hayano Ryugo S., Inabe Naoto, Itahashi Kenta, Itoh Satoshi, Kameda Daisuke, Kubo Toshiyuki, Matsubara Hiroaki, Michimasa Shin’ichiro, Miki Kenjiro, Miya Hiroyuki, Murakami Yohei, Nakamura Masaki, Nakatsuka Noritsugu, Noji Shumpei, Okochi Kota, Ota Shinsuke, Suzuki Hiroshi, Suzuki Ken, Takaki Motonobu, Takeda Hiroyuki, Tanaka Yoshiki K., Todoroki Koichi, Tsukada Kyo, Uesaka Tomohiro, Watanabe Yuni N., Weick Helmut, Yamada Hiroyuki, Yoshida Koichi
Publikováno v:
EPJ Web of Conferences, Vol 66, p 09014 (2014)
We performed a precision missing-mass spectroscopy experiment of the deeply bound pionic states in a 121Sn atom using the (d,3He) reaction near the π− emission threshold. The experiment serves as a pilot experiment for our new ‘pionic atom facto
Externí odkaz:
https://doaj.org/article/f980519ffc77431cb5d4367a4f2898b6
We propose a new approach for high-contrast imaging at the diffraction limit using segmented telescopes in a modest observation bandwidth. This concept, named "spectroscopic fourth-order coronagraphy", is based on a fourth-order coronagraph with a fo
Externí odkaz:
http://arxiv.org/abs/2012.04779
Autor:
Itoh, Satoshi, Matsuo, Taro
We propose a coronagraphic system with fourth-order null for off-axis segmented telescopes, which is sufficiently insensitive to the telescope pointing errors and finite angular diameter of the host star to enable high-contrast imaging of potentially
Externí odkaz:
http://arxiv.org/abs/2002.10762
Autor:
Ota Shinsuke, Noji Shumpei, Nishi Takahiro, Nakamura Masaki, Miya Hiroyuki, Miki Kenjiro, Michimasa Shinichiro, Matsubara Hiroaki, Kubo Toshiyuki, Kameda Daisuke, Itoh Satoshi, Inabe Naohito, Ikeno Natsumi, Hirenzaki Satoru, Hayano Ryugo S., Geissel Hans, Fujioka Hiroyuki, Berg Georg P.A., Itahashi Kenta, Suzuki Ken, Takeda Hiroyuki, Todoroki Koichi, Tsukada Kyo, Uesaka Tomohiro, Weick Helmut, Yoshida Koichi
Publikováno v:
EPJ Web of Conferences, Vol 37, p 01013 (2012)
We have performed an inclusive spectroscopy of 122Sn(d, 3He) reaction near the pion emission threshold at an incident energy of Td = 250 MeV/nucleon. The first experiment aims as devloping the high precision spectroscopy of pionic atoms at the RI bea
Externí odkaz:
https://doaj.org/article/78f7cd1ff49349e0a001ea613bb9ea27