Zobrazeno 1 - 10
of 114
pro vyhledávání: '"F. Richard Stephenson"'
Publikováno v:
Journal for the History of Astronomy. 53:209-216
From a comparison with calculation of the dates and descriptions of the allusions to lunar and solar eclipses recorded in the Anglo-Saxon Chronicle, we confirm the identifications of the eclipses given by Swanton in his 1996 translation and annotatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c8d22c71dab52a1bde0c27793054a54
https://doi.org/10.1177/00218286221097111
https://doi.org/10.1177/00218286221097111
Publikováno v:
Journal for the History of Astronomy. 52:397-413
Analysis of 111 Chinese timings of solar and lunar eclipses in the period AD 434–1280 and of 56 Middle-Eastern timings in AD 829–1020 reveals that their accuracy approached the limiting resolution of their clock systems. The Chinese accuracy impr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::060af4b522338e8fa666fbe2d20fd464
https://doi.org/10.1177/00218286211048263
https://doi.org/10.1177/00218286211048263
Publikováno v:
Journal for the History of Astronomy. 51:209-224
One hundred years ago, J.K. Fotheringham famously derived the “accelerations” of the Sun and Moon from the reports of 11 classical solar eclipses. We review critically the reliability of these eclipse reports and rework his diagrammatic method, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc030106e702da18f583a61dc79f5dcf
https://doi.org/10.1177/0021828620918438
https://doi.org/10.1177/0021828620918438
Publikováno v:
Journal for the History of Astronomy. 51:75-87
The reports of seven eclipses of the Sun and Moon in Bede’s Ecclesiastical History and its Continuation are investigated for their astronomical accuracy using modern-day calculations. The eclipses can all be identified from the given dates, which a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cb32537c78daa95f7707e4bf777c82e
https://doi.org/10.1177/0021828619899188
https://doi.org/10.1177/0021828619899188
Publikováno v:
Journal for the History of Astronomy. 50:3-15
We investigate the date of observation of the Hipparchus eclipse using our latest measurement of historical variations in the Earth’s rotation to plot the tracks of the potential eclipses. We conclude that Hipparchus most probably analysed the ecli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0dab4433b2031c533be088582ee1a11
https://doi.org/10.1177/0021828618817175
https://doi.org/10.1177/0021828618817175
Publikováno v:
Journal for the History of Astronomy. 49:425-471
An analysis of the tracks of total and annular solar eclipses crossing China reveals that most of the reports of such eclipses in the treatises in the dynastic histories from 206 bc to ad 1368 were very probably recorded at the capital by the court a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d932c493a8761258ac5dee8443c28a2e
https://doi.org/10.1177/0021828618789850
https://doi.org/10.1177/0021828618789850
Publikováno v:
Journal for the History of Astronomy. 48:405-416
The errors in the timings of the Almagest occultations are investigated to ascertain what contribution they made to Fotheringham and Longbottom’s 1915 result for the (tidal) acceleration of the Moon. It is found that their result is quite close to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70926eb5e5fc58d75459f82703bba8af
https://doi.org/10.1177/0021828617739992
https://doi.org/10.1177/0021828617739992
Autor:
F. Richard Stephenson, Shinsuke Imada, Kiyotaka Tanikawa, Kentaro Hattori, Lee T. Macdonald, David M. Willis, Mitsuru Sôma, M. N. Wild, Hisashi Hayakawa
Large sunspots can be observed with the unaided eye under suitable atmospheric seeing conditions. Such observations are of particular value because the frequency of their appearance provides an approximate indication of the prevailing level of solar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d7142d1b5aacf9b2b719a8d190667f0
http://arxiv.org/abs/1908.02452
http://arxiv.org/abs/1908.02452
Autor:
Chris J. Scott, M. N. Wild, David M. Willis, Yusuke Ebihara, Hisashi Hayakawa, Julia Wilkinson, F. Richard Stephenson
Publikováno v:
Solar physics, 2019, Vol.294(4), pp.36 [Peer Reviewed Journal]
The enhancement of carbon-14 in tree rings around AD 774/775 has generated wide interest in solar activity at that time. The historical auroral records have been examined critically. Of particular interest was the "white vapour" observed in China on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::942b6141f771f4a173b85b41ed7b0b7f
https://doi.org/10.1007/s11207-019-1425-7
https://doi.org/10.1007/s11207-019-1425-7
The Celestial Sign in the Anglo-Saxon Chronicle in the 770s: Insights on Contemporary Solar Activity
Autor:
David M. Willis, Hisashi Hayakawa, Yusuke Ebihara, F. Richard Stephenson, Yuta Uchikawa, Chris J. Scott, Julia Wilkinson, M. N. Wild
Publikováno v:
Solar Physics. 294
The anomalous concentration of radiocarbon in 774/775 attracted intense discussion on its origin, including the possible extreme solar event(s) exceeding any events in observational history. Anticipating such extreme solar events, auroral records wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dd485675e3a0ed52dc24a2b1c6447d5
https://doi.org/10.1007/s11207-019-1424-8
https://doi.org/10.1007/s11207-019-1424-8