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Study of Photometric Variability of Selected SU UMa Dwarf Novae [PDF]

open access: yesActa Polytechnica CTU Proceedings, 2015
In this work we present time-resolved photometry of several poorly-studied dwarf novae during recent superoutbursts. Observations were made with a CCD, mounted on 50- and 60-cm telescopes of the Sternberg Astronomical Institute in Crimea in April - May ...
I. Voloshina, V. Metlov
doaj   +4 more sources

Investigation of Superhumps in SU UMa-type Dwarf Novae Based on the Observations of TESS [PDF]

open access: yesThe Astrophysical Journal, 2023
We report a superhumps analysis of seven SU UMa-type dwarf novae based on observations made by the Transiting Exoplanet Survey Satellite (TESS). Superhumps are seen during the superoutbursts of SU UMa-type dwarf novae. The monthlong data sets of TESS are
Wei Liu, Shengbang Qian
doaj   +2 more sources

Symbiotic Star T CrB as an Extreme SU UMa–type Dwarf Nova

open access: yesThe Astrophysical Journal Letters, 2023
T CrB is a symbiotic recurrent nova that exhibits quiescent and active phases between its classical nova eruptions. The statistical properties of these active phases have been poorly studied thus far. Because of that their nature remained unknown.
Krystian Iłkiewicz   +2 more
doaj   +1 more source

Search for sub-TeV Neutrino Emission from Novae with IceCube-DeepCore

open access: yesThe Astrophysical Journal, 2023
The understanding of novae, the thermonuclear eruptions on the surfaces of white dwarf stars in binaries, has recently undergone a major paradigm shift. Though the bolometric luminosity of novae was long thought to arise directly from photons supplied by
R. Abbasi   +387 more
doaj   +1 more source

A Mini-Review of Accreting Pulsating White Dwarfs

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The discovery in 1998 of a pulsating white dwarf in the cataclysmic variable GW Lib opened up a new avenue of exploration in the asteroseismology of white dwarfs.
Paula Szkody
doaj   +1 more source

WZ SGE STARS

open access: yesOdessa Astronomical Publications, 2007
The WZ Sge type stars is a rare subclass of the cataclysmic variables (CVs). It possesses the properties of both dwarf novae and recurrent novae. The WZ Sge stars have the shortest orbital periods (typically 80 - 90 minutes) known among the dwarf novae ...
E. P. Pavlenko
doaj   +1 more source

Theory of Nova Outbursts and Type Ia Supernovae

open access: yesActa Polytechnica CTU Proceedings, 2015
We briefly review the current theoretical understanding of the light curves of novae. These curves exhibit a homologous nature, dubbed the universal decline law, and when time-normalized, they almost follow a single curve independently of the white dwarf
M. Kato, I. Hachisu
doaj   +1 more source

Inner Disk Structure of Dwarf Novae in the Light of X-Ray Observations

open access: yesActa Polytechnica CTU Proceedings, 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 spectra that show hard X-ray ...
S. Balman
doaj   +1 more source

Theoretical Light-curve Models of the Symbiotic Nova CN Cha—Optical Flat Peak for 3 Yr

open access: yesThe Astrophysical Journal, 2023
CN Cha is a slow symbiotic nova characterized by a 3 yr long optical flat peak followed by a rapid decline. We present theoretical light curves for CN Cha, based on hydrostatic approximation, and estimate the white-dwarf (WD) mass to be ∼0.6 M _☉ for a ...
Mariko Kato, Izumi Hachisu
doaj   +1 more source

MULTI-FREQUENCY STUDY OF SYMBIOTIC NOVAE

open access: yesOdessa Astronomical Publications, 2017
Symbiotic novae are subclass of symbiotic stars - interacting binaries with wide orbits, whose photometric history is characterized by a single nova- like outburst lasting decades and caused by a thermonuclear runaway on the surface of a wind accreting ...
D. Chochol, T. Pribulla
doaj   +1 more source

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