Results 21 to 30 of about 86,009 (222)

Getting to know classical novae with Swift

open access: yes, 2015
Novae have been reported as transients for more than two thousand years. Their bright optical outbursts are the result of explosive nuclear burning of gas accreted from a binary companion onto a white dwarf.
Julian P. Osborne (7579241)
core   +4 more sources

The Kukarkin-Parenago Relation for Dwarf Novae and Novae [PDF]

open access: yesAstrophysics and Space Science, 1987
AbstractThe period-amplitude relation and the period-energy relation for dwarf novae and novae are discussed. The total outbursts energy is shown to be a more suitable characteristic of the outburst than its amplitude.
openaire   +1 more source

AT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL [PDF]

open access: yesThe Astrophysical Journal, 2012
We are systematically surveying all known and suspected Z Cam-type dwarf novae for classical nova shells. This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis.
Shara, Michael M.   +7 more
openaire   +3 more sources

Dwarf nova outbursts with magnetorotational turbulence [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
The phenomenological Disc Instability Model has been successful in reproducing the observed light curves of dwarf nova outbursts by invoking an enhanced Shakura-Sunyaev $α$ parameter $\sim0.1-0.2$ in outburst compared to a low value $\sim0.01$ in quiescence.
Coleman, M. S. B.   +4 more
openaire   +3 more sources

Temperatture esttiimattiion off EXDRA and SSUMI dwarff Nova systtems from spectroscopic data

open access: yesIraqi Journal of Physics, 2019
The seasonal behavior of the light curve for selected star SS UMI and EXDRA during outburst cycle is studied. This behavior describes maximum temperature of outburst in dwarf nova.
Arshed Ali Kadhem
doaj   +1 more source

On the nature of dwarf novae

open access: yesThe Astrophysical Journal, 1983
Observational data on mass-transfer rates and radii of disks indicate that the outer parts of disks in novae and nova-like binaries are sufficiently hot for stationary accretion; those in dwarf novae are too cool to avoid an accretion instability, while these in Z Cam systems are the borderline cases.
openaire   +1 more source

THE DWARF NOVA OUTBURSTS OF NOVA HER 1960 (=V446 HER) [PDF]

open access: yesThe Astronomical Journal, 2011
To appear at the Astronomical Journal; 7 pages, 1 table, 11 ...
Honeycutt, R. K.   +2 more
openaire   +2 more sources

Transient behaviour of three SU UMa-type dwarf novae: AR Pic, QW Ser, and V521 Peg

open access: yes, 2022
Changes in the supercycle lengths of some SU UMa-type dwarf novae have been detected by other studies, and indicate that the mass transfer rates noticeably decrease over time.
Pieter J Meintjes   +7 more
core   +1 more source

Outbursts of dwarf novae [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1984
A review is given of the observational facts related to the outbursts of dwarf novae and of relevant aspects of the theory of accretion disks. It now appears possible to explain the outbursts of dwarf novae in terms of a nonstationary accretion behavior. Between the outbursts, the material supplied by the secondary component is stored in the relatively
openaire   +1 more source

Irradiated accretion discs in post novae [PDF]

open access: yes, 2001
We derive approximations for the $\dot M-\Sigma$ relation (the so-called S-curves) of irradiated accretion discs from detailed vertical structure calculations.
M. R. Schreiber   +5 more
core   +1 more source

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