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Related papers: A unified theory of cataclysmic variables from sel…

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In this paper, we review the present state of theoretical models of thermonuclear supernovae, and compare their predicitions with the constraints derived from observations of Type Ia supernovae. The diversity of explosion mechanisms usually…

Astrophysics · Physics 2009-11-10 E. Bravo , C. Badenes , D. Garcia-Senz

Novalike cataclysmic variables have persistently high mass transfer rates and prominent steady state accretion disks. We present an analysis of infrared observations of twelve novalikes obtained from the Two Micron All Sky Survey, the…

A common-envelope (CE) phase occurs when a star engulfs its companion and is widely considered the primary channel for producing Luminous Red Novae (LRNe). In this study, we combine binary-population synthesis with stellar-evolution…

Non-radial pulsations have been identified in a number of accreting white dwarfs in cataclysmic variables. These stars offer insight into the excitation of pulsation modes in atmospheres with mixed compositions of hydrogen, helium, and…

We present the results of a systematic numerical study of an alternative progenitor scenario to produce type Ia supernova explosions, which is not restricted to the ignition of a CO white dwarf near the Chandrasekhar mass. In this scenario,…

High Energy Astrophysical Phenomena · Physics 2015-05-13 S. Rosswog , D. Kasen , J. Guillochon , E. Ramirez-Ruiz

Type Ia Supernovae are thought to be thermonuclear explosions of massive white dwarfs (WD). We present the first study of multi-dimensional effects during the final hours prior to the thermonuclear runaway which leads to the explosion. The…

Astrophysics · Physics 2009-11-06 P. Hoeflich , J. Stein

This is the second in a series of papers associated with cataclysmic variables (CVs) and related objects, formed in a suite of simulations for globular cluster evolution performed with the MOCCA Monte Carlo code. We study the properties of…

Astrophysics of Galaxies · Physics 2016-12-05 Diogo Belloni , Mirek Giersz , Helio J. Rocha-Pinto , Nathan Leigh , Abbas Askar

Nova super-remnants (NSRs) are substantially extended structures (up to ~130 parsecs across) encompassing recurrent novae. NSRs grow as a result of frequent nova eruptions transporting vast quantities of the locally surrounding interstellar…

Astrophysics of Galaxies · Physics 2025-03-26 Michael William Healy-Kalesh

White dwarfs experience a thermal renaissance when they receive mass from a stellar companion in a binary. For accretion rates < 10^-8 Msun/yr, the freshly accumulated hydrogen/helium envelope ignites in a thermally unstable manner that…

Astrophysics · Physics 2009-11-07 Dean M. Townsley , Lars Bildsten

We present a systematic survey for mass-transferring and recently-detached cataclysmic variables (CVs) with evolved secondaries, which are progenitors of extremely low-mass white dwarfs (ELM WDs), AM CVn systems, and detached ultracompact…

Solar and Stellar Astrophysics · Physics 2021-12-01 Kareem El-Badry , Hans-Walter Rix , Eliot Quataert , Thomas Kupfer , Ken J. Shen

We examine published observations of dwarf nova oscillations (DNOs) on the rise and decline of outbursts and show that their rates of change are in reasonable agreement with those predicted from the magnetic accretion model. We find…

Astrophysics · Physics 2009-11-13 Brian Warner , Magaretha L. Pretorius

A central hypothesis in the theory of cataclysmic variable (CV) evolution is the need to explain the observed lack of accreting systems in the ~2-3 h orbital period range, known as the period gap. The standard model, disrupted magnetic…

IW And-type dwarf novae are recently recognized group of cataclysmic variables which are characterized by a sequence of brightening from a standstill-like phase with damping oscillations often followed by a deep dip. We found that the…

Solar and Stellar Astrophysics · Physics 2020-10-28 Taichi Kato , Naoto Kojiguchi

We report a long campaign to track the 1.8 hr photometric wave in the recurrent nova T Pyxidis, using the global telescope network of the Center for Backyard Astrophysics. During 1996-2011, that wave was highly stable in amplitude and…

Over the last decades, numerous wide (>1000 AU) binaries have been discovered in the Galactic field and halo. The origin of these wide binaries cannot be explained by star formation or by dynamical interactions in the Galactic field. We…

Astrophysics of Galaxies · Physics 2009-09-08 M. B. N. Kouwenhoven , S. P. Goodwin , Richard J. Parker , M. B. Davies , D. Malmberg , P. Kroupa

Chemical abundances studies of cataclysmic variables have revealed high nitrogen to carbon ratios in a number of of cataclysmic variable white dwarfs (based on ultraviolet emission and absorption lines), as well as possible carbon…

Solar and Stellar Astrophysics · Physics 2021-03-03 Patrick Godon , Edward Sion

The community agrees that Type Ia supernovae arise from Carbon/Oxygen white dwarfs undergoing thermonuclear runaway. However, the full progenitor system and the process that prompts the white dwarf to explode remain unknown. Most current…

The nova outburst can produce a large number of neutrinos, whether it is the nuclear reaction process during the explosion or the shock wave acceleration proton process. We study the low-energy nuclear and thermal neutrino luminosity of…

Solar and Stellar Astrophysics · Physics 2025-02-17 Hao Wang , Chunhua Zhu , Guoliang Lü , Lin Li , Helei Liu , Sufen Guo , Xizhen Lu

One century after the discovery of quasi-periodic oscillations in the optical light curve of Nova GK Per 1901 the cause of the transition phase in a certain part of the nova population is still unknown. Three years ago we suggested a…

Astrophysics · Physics 2009-11-07 A. Retter

When a core collapse supernova occurs in a binary system, the surviving star as well as the compact remnant emerging from the SN, may reach a substantial space velocity. With binary population synthesis modelling at solar and one fifth of…

Solar and Stellar Astrophysics · Physics 2015-05-27 John J. Eldridge , Norbert Langer , Christopher A. Tout
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