3 papers
astro-ph.SR2025
Challenging historical novae: AT Cnc (1645), Te-11 (483), and M22 (BC 48) revisited
D. L. Neuhäuser, R. Neuhäuser, V. Hambaryan +2
Connections between novae with shells and historical observations are crucial for astrophysical understanding of long-term evolution of shells and cataclysmic variables. Three of f…
astro-ph.SR2025
New Arabic records from Cairo on supernovae 1181 and 1006
J. G. Fischer, H. Halm, R. Neuhäuser +1
The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000-5000 yr), the unusual star IRAS 00500+67…
astro-ph.SR2024
The Mira discovery problem -- Observations by David Fabricius in 1596 and 1609 (and by others before?): Positional accuracy, brightness, color index, and period
R. Neuhäuser, D. L. Neuhäuser, M. Mugrauer +2
The pulsating variable star Mira (omikron Ceti) was observed by David Fabricius (Frisia) in 1596 and 1609. We review suggested previous detections (e.g. China, Hipparchos). We anal…