16 citations · 31 across the 6 of their papers we have counts for
6 papers
Colour evolution of Betelgeuse and Antares over two millennia, derived from historical records, as a new constraint on mass and age
Ralph Neuhäuser, Guillermo Torres, Markus Mugrauer +4
After core hydrogen burning, massive stars evolve from blue-white dwarfs to red supergiants by expanding, brightening, and cooling within few millennia. We discuss a previously neg…
Novae, supernovae, or something else? -- (Super-)nova highlights from Hoffmann & Vogt are quite certainly comets (AD 668 and 891)
Ralph Neuhaeuser, Dagmar L. Neuhaeuser, Jesse Chapman
Galactic novae and supernovae can be studied by utilizing historical observations, yielding explosion time, location on sky~etc. Recent publications by Hoffmann & Vogt present CVs,…
New sunspots and aurorae in the historical Chinese text corpus? Comments on uncritical digital search applications
D. L. Neuhaeuser, R. Neuhaeuser, J. Chapman
We review some applications of the method of electronic searching for historical observations of sunspots and aurorae in the Chinese text corpus by Hayakawa et al. etc. However, we…
Interpretation of the historic Yemeni reports of supernova SN 1006: early discovery in mid-April 1006 ?
Ralph Neuhaeuser, Dagmar Neuhaeuser, Wafiq Rada +3
The recently published Yemeni observing report about SN 1006 from al-Yamani clearly gives AD 1006 Apr (mid-Rajab 396h) as first observation date. Since this is about 1.5…
A review of East Asian reports of aurorae and comets circa AD 775
Jesse Chapman, Dagmar Neuhaeuser, Ralph Neuhaeuser +1
Given that a strong 14C variation in AD 775 has recently been suggested to be due to the largest solar flare ever recorded in history, it is relevant to investigate whether celesti…
The Chinese comet observation in AD 773 January
Jesse Chapman, Mark Csikszentmihalyi, Ralph Neuhaeuser
The strong 14C increase in the year AD 774/5 detected in one German and two Japanese trees was recently suggested to have been caused by an impact of a comet onto Earth and a depos…