Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Eijiro Hiei"'
Publikováno v:
Geoscience Data Journal, Vol 10, Iss 1, Pp 87-98 (2023)
Abstract Individual sunspot observations have formed a ground basis of international sunspot number, a unique reference for long‐term solar variability in the centennial timescale. The original datasets were subjected to exploitations and analyses
Externí odkaz:
https://doaj.org/article/cd8f80ca4b4942ed9bd9444be0a6119a
Publikováno v:
Proceedings of the International Astronomical Union. 13:459-463
We describe the history of solar-eclipse supervision since the formation of the International Astronomical Union, as the supervising body morphed from a full commission to a subcommission to its current status as an Inter-Divisional Working Group of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38a00ece34796f2292dad821f83dfe21
https://doi.org/10.1017/s1743921319000607
https://doi.org/10.1017/s1743921319000607
Publikováno v:
Solar Physics. Nov2003, Vol. 217 Issue 2, p235-245. 11p.
Publikováno v:
Solar Physics. 223:169-180
A relative complete set of He I 10830 Angstrom profiles and their coincident slit-jaw Ha images of the large limb flare (2N/X20) of 16 August 1989 were observed by the solar spectrograph at Purple Mountain Observatory. In addition to the unusually br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::087454d913ad225a602686d41155a905
https://doi.org/10.1007/s11207-004-1299-0
https://doi.org/10.1007/s11207-004-1299-0
Publikováno v:
Chinese Journal of Astronomy and Astrophysics. 4:377-389
After surveying the spectra of 39 prominences observed by the Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory and the 25 cm coronagraph at the Norikura Solar Observatory, we found that about 28% of them show small spatial scal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b4fe8a92296d05bc949077a92cf7caf
https://doi.org/10.1088/1009-9271/4/4/377
https://doi.org/10.1088/1009-9271/4/4/377
Publikováno v:
Solar Physics. 217:235-245
After carefully comparing the white-light (5600+/-800 Angstrom) and the slit-jaw Halpha images (0.5 Angstrom passband) of the 2N/X20 white-light flare of 16 August 1989, we found that the Halpha counterpart identification of the bright kernels in con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57c0865e6fe3a48b42723006ee82535f
https://doi.org/10.1023/b:sola.0000006900.28859.f4
https://doi.org/10.1023/b:sola.0000006900.28859.f4
Publikováno v:
Advances in Space Research. 25:1805-1808
We statistically investigate thermal characteristics of soft X-ray coronal loops in the pre-flare and flaring stages using the data observed between January 1992 and December 1992 with the soft X-ray telescope on board the Yohkoh satellite. The data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0890d523299d87b08a2f392a8e18c80
https://doi.org/10.1016/s0273-1177(99)00634-1
https://doi.org/10.1016/s0273-1177(99)00634-1
Autor:
N. Takahashi, Eijiro Hiei
Publikováno v:
Advances in Space Research. 25:1887-1891
Polar plumes are observed in polar regions during the minimum activity phase. Their existence, stability, and curved structure remain unsolved problems. Characteristics of polar plumes observed at the 4 solar eclipses of 1994, 1995, 1997, and 1998 ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b03f60e506188206098f3ca5f5670088
https://doi.org/10.1016/s0273-1177(99)00602-x
https://doi.org/10.1016/s0273-1177(99)00602-x
Autor:
M. Ohyama, Yutaka Uchida, I. Soru-Escaut, A. H. McALLISTER, Z. Mouradian, Eijiro Hiei, J. I. Khan, K. Shibasaki
Publikováno v:
Solar Physics. 180:313-329
The 7 May 1992 filament disappearance in the low corona is analyzed. The cool and hot components of this event are studied, using Hα, soft X-ray and radio data. We first show the general effect of the disparition brusque (DB) on the life of the fila
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fad22db0d0683271619cd1f61a28a55f
https://doi.org/10.1023/a:1005079225096
https://doi.org/10.1023/a:1005079225096
Publikováno v:
Publications of the Astronomical Society of Japan. 49:115-121
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dc12d2fbcd3e7d15e99cac3040ccada
https://doi.org/10.1093/pasj/49.1.115
https://doi.org/10.1093/pasj/49.1.115