Volume 43 (2025)

Periodicity in the historical light curve of the LBV star η Carinae
Ts.B. Georgiev, A. Valcheva, P.L. Nedialkov, S. Stefanov, M. Moyseev

Cosmography of anisotropic Kaniadakis holographic dark energy model in Brans-Dicke-Rastall gravity
Y. Aditya, D. Ram Babu, U.Y. Divya Prasanthi

Confined vs. eruptive M-class flares in solar cycles 23 and 24
Rositsa Miteva and Werner Pōtzi

Interstellar extinction toward MWC~148
R. Zamanov, I. Stateva, J. Marti, K. Stoyanov, V. Marchev

Dynamics of cosmological models with time varying parameters
Chingtham Sonia, S. Surendra Singh, Angelica Laishram, Md Khurshid Alam and Th. Revekson Singh

Exploring Quasar Variability in Gravitational Lensing with the Roman Telescope
Esmeralda Guliqani, Lindita Hamolli, Mimoza Hafizi

Hα Imaging of Solar Phenomena Using a Modified Schmidt-Cassegrain Telescope at Astronomical Observatory - Belogradchik
Pencho Markishki, Momchil Dechev, Werner Pötzi, Rositsa Miteva

DESpeRo: Data reduction software for the Echelle Spectrograph Rozhen
Stefan Georgiev, Miroslav Moyseev, Kiril Stoyanov, Renada Konstantinova-Antova, Maya Galabova