Today the new personal webpage was published. There was webpage dedicated to variable stars observations in Slovakia on this URL several years ago. Now personal webpage focused on one observer appears.
GK Per outburst
Nova Persei 1901 use to show regularly dwarf nova outburst. The last one started in August 2018. More details on AAVSO alert notice.
V392 Per
V392 Per nova eruption
Object previously known as dwarf nova erupted as classical nova on April 29, 2018. The outburst was discovered by Yuji Nakamura, Japan. Just few hours later confirmed by T. Tordai and P.A. Dubovsky from central Europe. Almost unprecedented event. However there are two similar object observed in the past. Prior to the nova eruption of V1017 Sagittarii in 1919 (6.2 mag) a dwarf nova outburst was recorded in 1901 (10.8 mag) – however, that dwarf nova outburst was noticed only 45 years later (McLaughlin 1946). V1213 Cen had classical outburst in 2016, then the dwarf nova behaviour prior to the nova outburst was discovered. In both cases first was the nova outburst observations. Now we have relatively well know dwarf nova with the range V = 14.1-16.9 suddenly erupted as nova. More information can be found in AAVSO alert notice.
Published papers
The list of peer reviewed papers with Pavol A. Dubovský as co-author can be found on ADS.
In almost all papers my contribution was only data acquisition.
Low states of intermediate polars
The by-product of long term monitoring of intermediate polars is the discovery of low states similar to the low states in classical polars. Up to now we know that such phenomenon was observed in V1323 Her, FO Aqr, DO Dra.
[Read more…] about Low states of intermediate polarsFlares on red dwarfs
By-product of the Project dwarf are the observation of flares on red dwarf in binary systems. The project dwarf is aimed at detection of circumbinary extrasolar planets using the timing of the minima of low-mass eclipsing binaries. There are many red dwarf stars among the observed objects. Thus time to time some flare was detected. Object GJ3236 turned to be the most active one. Another one was AD Leo, subject of 2019 campaign
[Read more…] about Flares on red dwarfs