Publications (7)
Kinematics and helicity evolution of a loop-like eruptive prominence
K. Koleva, M. S. Madjarska, P. Duchlev +4
We aim at investigating the morphology, kinematic and helicity evolution of a loop-like prominence during its eruption. We use multi-instrument observations from AIA/SDO, EUVI/STER…
Sunspot minimum between solar cycles No 23 and 24. Prediction of solar cycle No 24 magnitude on the base of "Waldmeier's rule"
B. Komitov, P. Duchlev, K. Stoychev +2
The main purpose of this study is the determination of solar minimum date of the new sunspot cycle No 24. It is provided by using of four types of mean daily data values for the pe…
Homologous prominence non-radial eruptions: A case study
P. Duchlev, K. Koleva, M. S. Madjarska +1
The present study provides important details on homologous eruptions of a solar prominence that occurred in active region NOAA 10904 on 2006 August 22. We report on the preeruptive…
Hα spectroscopy and multiwavelength imaging of a solar flare caused by filament eruption
Z. Huang, M. S. Madjarska, K. Koleva +4
We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. We aim to identify the possible trigger(s) and precursor(s) of th…
Synthetic solar X-ray flares time series since AD 1968 /s2
B. Komitov, P. Duchlev, K. Koleva +1
On the base of the most qualitative GOES satellites data for the period AD 1980-2009 and multiple regression model the "synthetic" series of the monthly numbers of soft X-ray flare…
Filament eruption deflection and associated CMEs
K. Koleva, R. Chandra, P. Duchlev +1
We present the observations of a quiescent filament eruption and its deflection from the radial direction. The event occurred in the southern solar hemisphere on 2021 May 9 and was…