English
Related papers

Related papers: Classical Novae as a Probe of the Cataclysmic Vari…

200 papers

Classical novae are thermonuclear explosions that take place in the envelopes of accreting white dwarfs in binary systems. The material piles up under degenerate conditions, driving a thermonuclear runaway. The energy released by the suite…

Solar and Stellar Astrophysics · Physics 2016-06-29 Jordi Casanova , Jordi Jose , Enrique Garcia-Berro , Steven N. Shore

We present a study of the orbital light curves of the recurrent nova IM Normae since its 2002 outburst. The broad "eclipses" recur with a 2.46 hour period, which increases on a timescale of 1.28(16)x10^6 years. Under the assumption of…

Recently, large and homogeneous samples of cataclysmic variables (CVs) identified by the Sloan Digital Sky Survey (SDSS) were published. In these samples, the famous orbital period gap, which is a dearth of systems in the orbital period…

Solar and Stellar Astrophysics · Physics 2024-02-06 Matthias R. Schreiber , Diogo Belloni , Axel D. Schwope

Novae are some of the most commonly detected optical transients and have the potential to provide valuable information about binary evolution. Binary population synthesis codes have emerged as the most effective tool for modelling…

The Dwarf Nova Oscillations observed in Cataclysmic Variable (CV) stars are interpreted in the context of a Low Inertia Accretor model, in which accretion on to an equatorial belt of the white dwarf primary causes the belt to vary its…

Astrophysics · Physics 2009-11-07 Brian Warner , Patrick A. Woudt

Recurrent novae are star systems in which a massive white dwarf accretes material at such a high rate that it undergoes thermonuclear runaways every 1 - 100 years. They are the only class of novae in which the white dwarf can grow in mass,…

Solar and Stellar Astrophysics · Physics 2022-05-25 C. Knigge , S. Toonen , T. C. N. Boekholt

Context: Classical nova progenitors are cataclysmic variables and very old novae are observed to match high mass transfer rate and (relatively) long orbital period systems. However, the aftermath of a classical nova has never been studied…

Solar and Stellar Astrophysics · Physics 2021-05-12 Elena Mason , Steven N. Shore , Jeremy Drake , Steve B. Howell , Paul Kuin , Enza Magaudda

The peak luminosities and rates of decline for a large sample of novae recently published by Clark et al. have been analyzed using the Yaron et al. nova models to estimate fundamental properties of the M31 nova population. The apparent…

Solar and Stellar Astrophysics · Physics 2026-01-19 Allen W. Shafter , Kamil Hornoch

Cataclysmic variables (CVs) are compact binary systems in which a white dwarf accretes matter from a Roche-lobe-filling companion star. In this study, we searched for new CVs in the Milky Way in the Chandra Source Catalog v2.0,…

Nova explosions occur on accreting white dwarfs. A thermonuclear runaway in the H-rich accreted envelope causes its ejection without destroying the white dwarf, and an increase in the luminosity by several magnitudes. Accretion is…

High Energy Astrophysical Phenomena · Physics 2026-01-14 Gloria Sala , Frank Haberl , Axel Schwope , Dusán Tubín-Arenas , Elif Şafak , Chandreyee Maitra , Jochen Greiner

During a visual search through the Kepler main-field lightcurves, we have discovered a cataclysmic variable (CV) that experienced only a single 4-day long outburst over four years, rising to three times the quiescent flux. During the four…

Context. The explosive burning that drives nova eruptions results in unique nucleosynthesis that heavily over-produces certain isotopes relative to the solar abundance. However, novae are often ignored when considering the chemical…

Astrophysics of Galaxies · Physics 2024-07-29 Alex J. Kemp , Amanda I. Karakas , Andrew R. Casey , Benoit Cote , Robert G. Izzard , Zara Osborn

Binary evolution theory predicts that accreting white dwarfs with sub-stellar companions dominate the Galactic population of cataclysmic variables (CVs). In order to test these predictions, it is necessary to identify these systems, which…

Solar and Stellar Astrophysics · Physics 2018-01-31 J. V. Hernandez Santisteban , C. Knigge , M. L. Pretorius , M. Sullivan , B. Warner

More than 20 pre-cataclysmic variable (pre-CV) systems have now been discovered with very short orbital periods ranging from 250 min down to 68 min. A pre-CV consists of a white dwarf or hot subdwarf primary and a low-mass companion star,…

Solar and Stellar Astrophysics · Physics 2018-10-24 L. Nelson , J. Schwab , M. Ristic , S. Rappaport

According to standard evolutionary theory for cataclysmic variables (CVs), angular momentum loss drives CVs to initially evolve from longer to shorter orbital periods until a minimum period is reached (\approx 80 min). At roughly this…

Solar and Stellar Astrophysics · Physics 2011-05-09 Helena Uthas

The predicted and observed space density of cataclysmic variables (CVs) have been for a long time discrepant by at least an order of magnitude. The standard model of CV evolution predicts that the vast majority of CVs should be period…

The evolution of Cataclysmic Variables (CVs) is driven by period-changes ($\dot{P}$), for which the long-venerable consensus is the Magnetic Braking Model (MBM). The MBM has its only distinctive assumption being a power-law `recipe'…

Solar and Stellar Astrophysics · Physics 2024-04-22 Bradley E. Schaefer

In this chapter we consider the processes which can lead to X-ray emission from different types of cataclysmic variable stars (CVs). CVs are semi-detached, binary star systems where material is transferred from the donor star (also known as…

High Energy Astrophysical Phenomena · Physics 2023-04-05 K. L. Page , A. W. Shaw

Large populations of cataclysmic variables (CVs) in globular clusters have long been predicted, but the number of absolutely certain cluster CVs known in globulars is still less than 10. HST and Chandra observers have recently found dozens…

Astrophysics · Physics 2009-11-13 Michael M. Shara , Sasha Hinkley , David R. Zurek

We have been proposing two evolutionary paths to Type Ia supernovae (SNe Ia), which are called the supersoft X-ray source (SSS) channel and the symbiotic channel, depending on the orbital separation just prior to an SN Ia explosion. The…

Astrophysics · Physics 2007-05-23 Izumi Hachisu
‹ Prev 1 4 5 6 7 8 10 Next ›