Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Mitsuru Sôma"'
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L31 (2024)
Telescopic sunspot observations began in 1610 and captured subsequent solar cycles. In combination with proxy reconstructions on an annual scale, these data sets indicate a gradual transition between regular solar cycles and the Maunder Minimum. The
Externí odkaz:
https://doaj.org/article/b5df1e22de9d4b12a9691213f55c6461
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-11 (2020)
Abstract The importance of the investigation of magnetic superstorms is not limited to academic interest, because these superstorms can cause catastrophic impact on the modern civilisation due to our increasing dependency on technological infrastruct
Externí odkaz:
https://doaj.org/article/4e2c79c6dcb748f3ad453f7976fb1677
Publikováno v:
Journal for the History of Astronomy. 54:193-212
This study analysed four records of questionable authenticity of total solar eclipses between the fourth and sixth centuries CE in Byzantine narrative sources. As it has been difficult to evaluate their credibility, they have not been utilised in mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61261c0881a9f052ae71453b9235d06b
https://doi.org/10.1177/00218286231167185
https://doi.org/10.1177/00218286231167185
Publikováno v:
Publications of the Astronomical Society of Japan. 74:1275-1286
Solar eclipses have been recorded throughout history and across various ethnic groups. Their records have benefitted scientific discussions on multiple topics. These astronomical spectacles have also been recorded in the Japanese archipelago, but lit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce285ab6374413bf69627d9ca024dc7b
https://doi.org/10.1093/pasj/psac064
https://doi.org/10.1093/pasj/psac064
Publikováno v:
Publications of the Astronomical Society of Japan. 74:665-677
We obtain a narrower and more reliable range of the delay of Earth’s rotation, ΔT, than those obtained before. At the same time, we determine the observation sites of these eclipses in the early seventh century. The eclipses are the one on AD 616
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::796f176f5d06f309c5dee563969c4d94
https://doi.org/10.1093/pasj/psac021
https://doi.org/10.1093/pasj/psac021
Autor:
Hisashi Hayakawa, Kentaro Hattori, Mitsuru Sôma, Tomoya Iju, Bruno P. Besser, Shunsuke Kosaka
Publikováno v:
The Astrophysical Journal. 941:151
Solar activity generally exhibits cyclic behavior in terms of sunspot group number and sunspot positions every ≈11 yr. These sunspot data have therefore played key roles in numerous analyses of solar–terrestrial physics. However, their reconstruc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f58c1e5025b23a596ca815993d1471a7
https://doi.org/10.3847/1538-4357/ac6671
https://doi.org/10.3847/1538-4357/ac6671
Publikováno v:
Publications of the Astronomical Society of the Pacific. 134(1039):094401
As one of the greatest astronomical spectacles, total solar eclipses have long been a subject of scientific interest and have been recorded by numerous civilizations over the millennia. These records are an essential reference for constraining and re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ccdacc56618ab2c6be3af2a85b2468f
https://tsukuba.repo.nii.ac.jp/records/2005315
https://tsukuba.repo.nii.ac.jp/records/2005315
Autor:
Mitsuru Sôma, Kiyotaka Tanikawa
The records of planetary observations in Japan in the 7th century ad are treated separately from other records because they are written in the Nihongi. It is known that Japanese observational astronomy was recorded in the 7th century ad, but astronom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1aaff1d681e29e665aea0ff5b2ec560
https://doi.org/10.1093/acrefore/9780190647926.013.170
https://doi.org/10.1093/acrefore/9780190647926.013.170
Autor:
Hisashi Hayakawa, Mike Lockwood, Matt J. Owens, Mitsuru Sôma, Lidia van Driel-Gesztelyi, Bruno P. Besser
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 1 (2021)
We discuss the significant implications of three eye-witness drawings of the total solar eclipse on 1706 May 12 in comparison with two on 1715 May 3, for our understanding of space climate change. These events took place just after what has been term
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4d97142b3afc7f4b7bd93f86acb0857
https://centaur.reading.ac.uk/92706/9/swsc190067.pdf
https://centaur.reading.ac.uk/92706/9/swsc190067.pdf
Visible coronal structure, in particular the spatial evolution of coronal streamers, provides indirect information about solar magnetic activity and the underlying solar dynamo. Their apparent absence of structure observed during the total eclipses t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::557d4343c55dc8f629944a6c44c1519f
https://centaur.reading.ac.uk/92705/9/1806_June_16_eclipse_manuscript_200517-1_plusML.pdf
https://centaur.reading.ac.uk/92705/9/1806_June_16_eclipse_manuscript_200517-1_plusML.pdf