Prohlížení Acta Polytechnica CTU Proceedings. 2015, vol.2, no. 1 dle názvu
Zobrazují se záznamy 1-20 z 65
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A New Review of Old Novae
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Novae are certainly very exciting at the time of their eruptions, and there is much work left to be done in understanding all of the details of that part of their existence, but there is also much to be learned by looking ... -
Activity of the Polar AM Her (RX J1816.2+4952): A Short Review
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)We show that AM Her displays the transitions between the high and low states with an intermittently existing dominant cycle with length between 400 and 800 days. Moreover, these transitions accumulate in clusters, which ... -
AE Aquarii: A Short Review
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)The nova-like variable AE Aquarii has been continuously studied since its discovery on photographic plates in 1934. In this short review the peculiar multi-wavelength properties of AE Aquarii will be reviewed and explained ... -
Application of Total Variation Minimization to Doppler Tomography
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)We have developed a new model of the Doppler tomography using total variation minimization (DTTVM). We demonstrated that this method can reconstruct localized and non-axisymmetric profiles possibly having sharp edges in ... -
Broad-Band Variability in Accreting Compact Objects
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Cataclysmic variable stars are in many ways similar to X-ray binaries. Both types of systems possess an accretion disk, which in most cases can reach the surface (or event horizon) of the central compact object. The main ... -
Cataclysmic Variables from SDSS: A Review and A Look Forward to LSST
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)The past and current projects of the Sloan Digital Sky Survey are reviewed in the context of applicability and results for cataclysmic variables. Ongoing and future time domain surveys that will have impact on the field ... -
Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf ... -
Concluding Remarks
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Concluding Remarks -
CVs Around the Minimum Orbital Period
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)We discussed features of Cataclysmic Variables at the period minimum. In general, most of them must be WZ Sge-type objects. Main characteristics of the prototype star (WZ Sge) are discussed. A part of WZ Sge-type objects ... -
Detection of Diatomic Molecules in the Dust Forming Nova V2676 Oph
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Novae are generally considered to be hot astronomical objects and show effective temperatures up to 10,000 K or higher at their visual maximum. But, it is theoretically predicted that the outer envelope of the nova outflow ... -
Diagnostic of the Symbiotic Stars Environment by Thomson, Raman and Rayleigh Scattering Processes
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Symbiotic stars are long-period interacting binaries consisting of a cool giant as the donor star and a white dwarf as the acretor. Due to acretion of the material from the giant’s stellar wind, the white dwarf becomes ... -
Early Super Soft Source Spectra in RS Oph
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Recent Swift X-ray monitoring campaigns of novae have revealed extreme levels of variability during the early super-softsource (SSS) phase. The first time this was observed was during the 2006 outburst of the recurrent ... -
Evolution and Outbursts of Cataclysmic Variables
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Mass transfer and accretion are very important to understand the evolution and observational properties of cataclysmic variables (CVs). Due to the lack of an accretion disk, eclipsing profiles of polars are the best source ... -
Flickering in CVs and Accretion Disc Viscosity
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)I review observational constraints on accretion disc viscosity inferred from changes of disc structure with time and from disc flickering distributions. The radial run of the disc viscosity parameter in four cases are ... -
GLORIA and Study of Cataclysmic Variables
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)We report here on the ongoing EU FP7 Project GLORIA (GLObal Robotic-telescopes Intelligent Array) with emphasis on possibility of investigation of cataclysmic variables by users. GLORIA will enable the first free and ... -
Golden Era of Cataclysmic Variables and Related Objects II: Concluding Remarks
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)The cataclysmic variables continue to represent important part of modern astrophysics, as demonstrated, already second time, by the productive and successful conference Golden Era of Cataclysmic Variables and Related Objects ... -
High-Speed Photo-Polarimetry of Magnetic Cataclysmic Variables
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)I review recent highlights of the SAAO High-speed Photo-POlarimeter (HIPPO) on the study of magnetic Cataclysmic Variables. Its high-speed capabilities are demonstrated with example observations made of the intermediate ... -
Inner Disk Structure of Dwarf Novae in the Light of X-Ray Observations
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Diversity of the X-ray observations of dwarf nova are still not fully understood. I review the X-ray spectral characteristics of dwarf novae during the quiescence in general explained by cooling flow models and the outburst ... -
Investigating Long-Term Behaviour of X-ray Binaries Using Archival Data
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Long term modulations have been detected in a wide variety of both low and high-mass X-ray binaries. The All Sky Monitor on board the Rossi X-ray Timing Explorer provides the most extensive (~15 years) and sensitive X-ray ... -
Life After Eruption: Best of 2009–2013
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)From our ongoing survey to study the post-nova population we present details on the four objects V728 Sco, AR Cir, V972 Oph and X Cir.