Long-term activity of the X-ray source QR And / RX J0019.8+2156
Šimon, Vojtěch; Sobotka, P.; Marek, P.; Lehký, M.; Šmelcer, L.; Lomoz, Fr.
2002 - English QR And has been monitored in the framework of the observational campaing which started in 1998. The authors resolved prominent variations of the orbital modulation which depend on the state of the long-term activity of the system. Keywords: X-ray sources; circumstellar matter; cataclysmic variables Available at various institutes of the ASCR Long-term activity of the X-ray source QR And / RX J0019.8+2156

QR And has been monitored in the framework of the observational campaing which started in 1998. The authors resolved prominent variations of the orbital modulation which depend on the state of the ...

Šimon, Vojtěch; Sobotka, P.; Marek, P.; Lehký, M.; Šmelcer, L.; Lomoz, Fr.
Astronomický ústav, 2002

Long-term variability of dwarf novae and soft X-ray transients
Šimon, Vojtěch
2002 - English The results of analysis of Tc by the method of the O-C residuals is presented for a set of DN of various types and some SXTs. Keywords: X-ray sources; circumstellar matter; cataclysmic variables Available at various institutes of the ASCR Long-term variability of dwarf novae and soft X-ray transients

The results of analysis of Tc by the method of the O-C residuals is presented for a set of DN of various types and some SXTs.

Šimon, Vojtěch
Astronomický ústav, 2002

Some aspects of meteor head echos occurrence during Leonids 2000 and 2001
Nováková, Drahomíra; Pecina, Petr
2002 - English Keywords: head echoes; Leonids Available at various institutes of the ASCR Some aspects of meteor head echos occurrence during Leonids 2000 and 2001

Nováková, Drahomíra; Pecina, Petr
Astronomický ústav, 2002

Spectroscopic study of omicron And
Budovičová, Andrea
2001 - English Keywords: Be stars; o And; Be hvězdy Available at various institutes of the ASCR Spectroscopic study of omicron And

Budovičová, Andrea
Astronomický ústav, 2001

Formation of eccentric disks around black holes
Hadrava, Petr; Řezáč, R.; Oestgaard, E.
2001 - English The formation and evolution of eccentric disks around black holes due to explosion of a companion on an eccetric orbit is modeled by means of exact general-relativistic N-particle treatment. It is shown that in spite of the generally accepted view that the debris must be quickly smeared out to a circular accretion disk. Keywords: black holes; accretion disks; eccentric rings Available at various institutes of the ASCR Formation of eccentric disks around black holes

The formation and evolution of eccentric disks around black holes due to explosion of a companion on an eccetric orbit is modeled by means of exact general-relativistic N-particle treatment. It is ...

Hadrava, Petr; Řezáč, R.; Oestgaard, E.
Astronomický ústav, 2001

Hot emission-line stars after 134 years of study. A personal view of current problems
Harmanec, Petr
2001 - English A brief review of current problems in the research of hot emission-line stars is presented. Special attention is paid to problems of reliable determination of basic physical properties of underlying stars and to possible role of duplicity in the whole phenomenon. Keywords: hot emission-line stars; binaries; spectral and light changes Available at various institutes of the ASCR Hot emission-line stars after 134 years of study. A personal view of current problems

A brief review of current problems in the research of hot emission-line stars is presented. Special attention is paid to problems of reliable determination of basic physical properties of underlying ...

Harmanec, Petr
Astronomický ústav, 2001

Motions and structured in an active prominence on September 18, 1995
Kotrč, Pavel; Korčáková, D.; Kupryakov, Yu. A.
1999 - English Available at various institutes of the ASCR Motions and structured in an active prominence on September 18, 1995

Kotrč, Pavel; Korčáková, D.; Kupryakov, Yu. A.
Astronomický ústav, 1999

Dynamical parameters of limb phenomena as derived from MFS data
Kotrč, Pavel
1999 - English Available at various institutes of the ASCR Dynamical parameters of limb phenomena as derived from MFS data

Kotrč, Pavel
Astronomický ústav, 1999

An automated system for microwave RF1 monitoring at radioastronomical sites
Jiřička, Karel; Montenbugnoli, S.; Cecchi, M.; Bortolotti, C.; Roma, M.
1999 - English Available at various institutes of the ASCR An automated system for microwave RF1 monitoring at radioastronomical sites

Jiřička, Karel; Montenbugnoli, S.; Cecchi, M.; Bortolotti, C.; Roma, M.
Astronomický ústav, 1999

Fourier disentangling and light curve solution for multiple stars
Hadrava, Petr
1998 - English Available at various institutes of the ASCR Fourier disentangling and light curve solution for multiple stars

Hadrava, Petr
Astronomický ústav, 1998