Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Masfumi Hirahara"'
Autor:
M. Fujimoto, Y. Tsuda, Y. Saito, I. Shinohara, T. Takashima, A. Matsuoka, H. Kojima, Y. Kasaba, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
In order to reach the new horizon of the space physics research, the Plasma Universe, via in‐situ measurements in the Earth’s magnetosphere, SCOPE will perform formation flying observations combined with high‐time resolution electron measuremen
Autor:
H. Shinagawa, N. Terada, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
It is widely recognized that both Venus and Mars possess no significant global intrinsic magnetic fields, and that the solar wind interacts directly with the upper atmospheres and ionospheres of Venus and Mars. In addition, local crustal magnetic fie
Autor:
K. Ogasawara, K. Asamura, T. Takashima, Y. Saito, T. Mukai, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
The information on energy spectra of 1–100 keV electrons is expected to provide an important clue to understand heating and acceleration mechanisms of magnetospheric plasmas. However, electrons of several keV to several tens of keV are not properly
Autor:
L. Zelenyi, A. Zakharov, G. Polischuk, K. Pichkhadze, E. Akim, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
The drive for “in situ” investigation of Phobos and Deimos is strongly supported by the need to understand the basic scientific issues related to the Martian moons both as the representatives of the family of the small bodies in the Solar system
Autor:
W. Miyake, T. Mukai, A. Matsuoka, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
We seek a possibility of low‐frequency (0.2–4.0 Hz) electric‐field fluctuations (LEFs) as a possible energy source of transverse ion heating around the cusp/cleft region. Intense LEFs and transversely heated ions (ion conics) have an occurrence
Autor:
Yoshifumi Saito, Shintaro Sasaki, Masaki Fujimoto, Kiyoshi Maezawa, Iku Shinohara, Yuichi Tsuda, Hirotsugu Kojima, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai
Publikováno v:
AIP Conference Proceedings.
We have newly developed an electron energy analyzer FESA (Fast Electron energy Spectrum Analyzer) for a future magnetospheric satellite mission SCOPE. The SCOPE mission is designed in order that observational studies from the cross‐scale coupling v
Autor:
N. Shimada, M. Hoshino, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
We discuss dissipation process in the shock transition region based on our recent numerical simulation results. We have performed self‐consistent particle‐in‐cell (PIC) simulation and found that electron kinetics plays an important role in the
Autor:
L. M. Zelenyi, M. Dolgonosov, E. E. Grigorenko, J.-A. Sauvaud, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
Solar wind and ionospheric ions gain significant energy in the course of their interaction with magnetotail current sheet. The driver of this energization is the dawn‐dusk electric field but the acquired energy could be converted either to thermal
Autor:
E. A. MacDonald, H. O. Funsten, E. E. Dors, M. F. Thomsen, P. H. Janzen, R. M. Skoug, G. D. Reeves, J. T. Steinberg, R. Harper, D. T. Young, J. -M. Jahn, D. Reisenfeld, Masfumi Hirahara, Yoshizumi Miyoshi, Naoki Terada, Toshifumi Mukai, Iku Shinohara
Publikováno v:
AIP Conference Proceedings.
This paper provides a brief overview of three new instruments designed to measure ion composition in the magnetosphere at energies from a few eV/q to a maximum of 200 keV/q. Ion composition is not currently monitored at geosynchronous orbit and is an
Publikováno v:
AIP Conference Proceedings.
The rationale for pushing for the development of microsatellite missions equipped with miniaturized scientific payloads for the study of outer planets is described. The conceptual and feasibility design study of an Io Probe performed by DARA a decade