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Type Ia supernovae are bright stellar explosions distinguished by standardizable light curves that allow for their use as distance indicators for cosmological studies. Despite their highly successful use in this capacity, the progenitors of…

Solar and Stellar Astrophysics · Physics 2015-06-05 Alan C. Calder , Brendan K. Krueger , Aaron P. Jackson , Dean M. Townsley , Edward F. Brown , Francis X. Timmes

Thermonuclear (type Ia) supernovae are bright stellar explosions with the unique property that the light curves can be standardized, allowing them to be used as distance indicators for cosmological studies. Many fundamental questions bout…

Solar and Stellar Astrophysics · Physics 2019-10-02 Alan C. Calder , Don E. Willcox , Christopher J. DeGrendele , Desmond Shangase , Michael Zingale , Dean M. Townsley

Type Ia supernovae are bright stellar explosions distinguished by standardizable light curves that allow for their use as distance indicators for cosmological studies. Despite the highly successful use of these events in this capacity, many…

Solar and Stellar Astrophysics · Physics 2013-03-12 Alan C. Calder , Brendan K. Krueger , Aaron P. Jackson , Dean M. Townsley

Type Ia supernovae (SNe Ia) are runaway thermonuclear explosions in white dwarfs that result in the disruption of the white dwarf star, and possibly its nearby stellar companion. SNe Ia occur over an immense range of stellar population age…

Solar and Stellar Astrophysics · Physics 2024-12-03 Ashley J. Ruiter , Ivo R. Seitenzahl

The application of Type Ia supernovae (SNe Ia) as distance indicators in cosmology calls for a sound understanding of these objects. Recent years have seen a brisk development of astrophysical models which explain SNe Ia as thermonuclear…

Astrophysics · Physics 2009-06-23 F. K. Roepke

Type Ia supernovae, the thermonuclear explosions of white dwarf stars composed of carbon and oxygen, were instrumental as distance indicators in establishing the acceleration of the universe's expansion. However, the physics of the…

Astrophysics · Physics 2008-11-26 P. A. Mazzali , F. K. Roepke , S. Benetti , W. Hillebrandt

Type Ia supernovae (SNe Ia) correspond to the thermonuclear explosion of a carbon-oxygen white dwarf (C-O WD) star in a binary system, triggered by the accretion of material from another star, or the merger/collision with a secondary WD.…

High Energy Astrophysical Phenomena · Physics 2025-06-06 Stéphane Blondin

Thermonuclear (Type Ia) supernovae are bright stellar explosions, the light curves of which can be calibrated to allow for use as "standard candles" for measuring cosmological distances. Contemporary research investigates how the brightness…

Solar and Stellar Astrophysics · Physics 2017-06-28 Alan C. Calder , Brendan K. Krueger , Aaron P. Jackson , Don E. Willcox , Broxton J. Miles , Dean M. Townsley

Type Ia supernovae have recently received considerable attention because it appears that they can be used as "standard candles" to measure cosmic distances out to billions of light years away from us. Observations of type Ia supernovae seem…

Astrophysics · Physics 2007-05-23 W. Hillebrandt , M. Reinecke , W. Schmidt , F. K. Roepke , C. Travaglio , J. C. Niemeyer

Type Ia supernovae are associated with thermonuclear explosions of white dwarf stars. Combustion processes convert material in nuclear reactions and release the energy required to explode the stars. At the same time, they produce the…

Solar and Stellar Astrophysics · Physics 2018-04-25 Friedrich K. Roepke

Type Ia supernovae are destructive explosions of carbon oxygen white dwarfs. Although they are used empirically to measure cosmological distances, the nature of their progenitors remains mysterious, One of the leading progenitor models,…

The explosive death of a star as a supernova is one of the most dramatic events in the Universe. Supernovae have an outsized impact on many areas of astrophysics: they are major contributors to the chemical enrichment of the cosmos and…

High Energy Astrophysical Phenomena · Physics 2019-08-08 Saurabh W. Jha , Kate Maguire , Mark Sullivan

Type Ia supernovae are key tools for measuring distances on a cosmic scale. They are generally thought to be the thermonuclear explosion of an accreting white dwarf in a close binary system. The nature of the mass donor is still uncertain.…

The precise origin of Type Ia supernovae (SNe Ia) is unknown despite their value to numerous areas in astronomy. While it is a long-standing consensus that they arise from an explosion of a carbon/oxygen white dwarf, the exact progenitor…

High Energy Astrophysical Phenomena · Physics 2024-07-10 Samuel J. Boos , Dean M. Townsley , Ken J. Shen

From the spectra and light curves it is clear that SNIa events are thermonuclear explosions of white dwarfs. However, details of the explosion are highly under debate. Here, we present detailed models which are consistent with respect to…

Astrophysics · Physics 2007-05-23 Peter Hoeflich

Type Ia supernovae are thought to be thermonuclear explosions of accreting white dwarfs that reach a critical mass limit. Despite their importance as cosmological distance indicators, the nature of their progenitors has remained…

Type Ia supernovae are thought to be the outcome of the thermonuclear explosion of a white dwarf in a close binary system. Two possible scenarios, not necessarily incompatible, have been advanced. One assumes a white dwarf that accretes…

High Energy Astrophysical Phenomena · Physics 2011-11-08 J. Isern , E. García-Berro , P. Lorén-Aguilar

We present a new mechanism for Type Ia supernova explosions in massive white dwarfs. The proposed scenario follows from relaxing the assumption of symmetry in the model and involves a detonation created in an unconfined environment. The…

Astrophysics · Physics 2009-11-10 Tomasz Plewa , Alan Calder , Don Lamb

Modeling type Ia supernova (SN Ia) explosions in three dimensions allows to eliminate any undetermined parameters and provides predictive power to simulations. This is necessary to improve the understanding of the explosion mechanism and to…

Astrophysics · Physics 2009-11-11 F. K. Roepke , W. Hillebrandt

We present a detonating failed deflagration model of Type Ia supernovae. In this model, the thermonuclear explosion of a massive white dwarf follows an off-center deflagration. We conduct a survey of asymmetric ignition configurations…

Astrophysics · Physics 2008-11-26 Tomasz Plewa
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