Results 21 to 30 of about 838,554 (289)

The Masses and Accretion Rates of White Dwarfs in Classical and Recurrent Novae [PDF]

open access: yesAstrophysical Journal, 2018
Models have long predicted that the frequency-averaged masses of white dwarfs (WDs) in Galactic classical novae are twice as large as those of field WDs.
M. Shara   +3 more
semanticscholar   +1 more source

SHORTEST RECURRENCE PERIODS OF NOVAE [PDF]

open access: yesThe Astrophysical Journal, 2014
8 pages, 9 figures, to appear in ApJ, accepted ...
Mariko Kato   +3 more
openaire   +2 more sources

On a century of extragalactic novae and the rise of the rapid recurrent novae [PDF]

open access: yesAdvances in Space Research, 2019
Novae are the observable outcome of a transient thermonuclear runaway on the surface of an accreting white dwarf in a close binary system. Their high peak luminosity renders them visible in galaxies out beyond the distance of the Virgo Cluster.
M. Darnley, M. Henze
semanticscholar   +1 more source

Accrete, Accrete, Accrete… Bang! (and repeat): The remarkable Recurrent Novae [PDF]

open access: yesProceedings of The Golden Age of Cataclysmic Variables and Related Objects V — PoS(GOLDEN2019), 2019
All novae recur, but only a handful have been observed in eruption more than once. These systems, the recurrent novae (RNe), are among the most extreme examples of novae. RNe have long been thought of as potential type Ia supernova progenitors, and their
M. Darnley
semanticscholar   +1 more source

A 9 Month Hubble Space Telescope Near-UV Survey of M87. I. Light and Color Curves of 94 Novae, and a Redetermination of the Nova Rate

open access: yesThe Astrophysical Journal Supplement Series, 2023
M87 has been monitored with a cadence of 5 days over a span of 9 months through the near-ultraviolet (NUV; F275W) and optical (F606W) filters of the Wide Field Camera 3 (WFC3) of the Hubble Space Telescope.
Michael M. Shara   +12 more
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

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

Evidence for Multiple Shocks from the γ-Ray Emission of RS Ophiuchi

open access: yesThe Astrophysical Journal, 2023
In 2021 August, the Fermi Large Area Telescope, H.E.S.S., and MAGIC detected GeV and TeV γ -ray emission from an outburst of recurrent nova RS Ophiuchi. This detection represents the first very high-energy γ -rays observed from a nova, and it opens a new
Rebecca Diesing   +6 more
doaj   +1 more source

Recurrence of Nova Explosions [PDF]

open access: yesInternational Astronomical Union Colloquium, 1979
It has been shown by many computations that a nova explosion is triggered by mass accretion onto a white dwarf in a close binary system. Such nova explosions will recur many times in the following way. When a certain amount of hydrogen-rich gas has been accreted on the white dwarf, a hydrogen-shell flash is ignited.
Kyoji Nariai, Ken’ichi Nomoto
openaire   +1 more source

Recurrent novae and long-term evolution of mass-accreting white dwarfs – toward the accurate mass retention efficiency [PDF]

open access: yesProceedings of The Golden Age of Cataclysmic Variables and Related Objects IV — PoS(GOLDEN 2017), 2017
The mass growth rate of mass-accreting white dwarfs (WDs) is a key factor in binary evolution scenarios toward Type Ia supernovae. Many authors have reported very different WD mass increasing rates.
M. Kato, I. Hachisu, H. Saio
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy