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Related papers: Simulating the observed diversity of Type Ia super…

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In this short review I suggest that recent developments support the conjecture that Type Ia supernovae (SNe Ia) are the complete disruptions of Chandrasekhar-mass carbon-oxygen white dwarfs in single-degenerate binary systems. The causes of…

Astrophysics · Physics 2009-10-31 David Branch

Type Ia supernovae (SNe) are thought to originate from the thermonuclear explosions of carbon-oxygen (CO) white dwarfs (WDs). The proposed progenitors of standard type Ia SNe have been studied for decades and can be, generally, divided into…

High Energy Astrophysical Phenomena · Physics 2019-10-18 Hagai B. Perets , Yossef Zenati , Silvia Toonen , Alexey Bobrick

Based on detailed models for the explosions, light curves and NLTE-spectra, evolutionary effects of Type Ia Supernovae (SNe Ia) with redshift have been studied to evaluate their size on cosmological time scales,how the effects can be…

Astrophysics · Physics 2007-05-23 Peter Hoeflich

We present theoretical UBVI- and bolometric light curves of SNe Ia for several explosion models, computed with our multi-group radiation hydro code. We employ our new corrected treatment for line opacity in the expanding medium. The results…

Astrophysics · Physics 2009-11-07 Elena Sorokina , Sergey Blinnikov

A simulation of the thermonuclear explosion of a Chandrasekhar-mass C+O white dwarf, the most popular scenario of a type Ia supernova (SN Ia), is presented. The underlying modeling is pursued in a self-consistent way, treating the…

Astrophysics · Physics 2009-11-13 F. K. Roepke , W. Hillebrandt , W. Schmidt , J. C. Niemeyer , S. I. Blinnikov , P. A. Mazzali

We present a public, open-source relational database (we name kaepora) containing a sample of 4975 spectra of 777 Type Ia supernovae (SNe Ia). Since we draw from many sources, we significantly improve the spectra by inspecting these data…

High Energy Astrophysical Phenomena · Physics 2019-05-08 M. R. Siebert , R. J. Foley , D. O. Jones , R. Angulo , K. Davis , A. Duarte , E. Strasburger , M. Conlon , N. Kazmi , R. Nishimoto , M. Schubert , L. Sun , R. Tippens

Large photometric surveys with the aim of identifying many Type Ia supernovae (SNe) at moderate redshift are challenged in separating these SNe from other SN types. We are motivated to identify Type Ia SNe based only on broadband…

Astrophysics · Physics 2008-11-26 Benjamin D. Johnson , Arlin P. S. Crotts

In response to a recently reported observation of evidence for two classes of Type Ia Supernovae (SNe Ia) distinguished by their brightness in the rest-frame near ultraviolet (NUV), we search for the phenomenon in publicly available…

Cosmology and Nongalactic Astrophysics · Physics 2017-01-16 David Cinabro , Daniel Scolnic , Richard Kessler , Ashley Li , Jake Miller

Type Ia Supernovae (SNe Ia) are used as reliable cosmic distance indicators and their standardization is necessary for a more accurate measurement of the cosmological parameters of the Universe. However, the Hubble diagram still shows some…

High Energy Astrophysical Phenomena · Physics 2024-06-17 Anastasia Baluta , Maria Pruzhinskaya , Philippe Rosnet , Nicoleta Pauna

Double detonations of sub-Chandrasekhar mass white dwarfs are a promising explosion scenario for Type Ia supernovae, whereby a detonation in a surface helium shell triggers a secondary detonation in a carbon-oxygen core. Recent work has…

Solar and Stellar Astrophysics · Physics 2023-07-06 Christine E. Collins , Sabrina Gronow , Stuart A. Sim , Friedrich K. Roepke

The early time observations of Type Ia supernovae (SNe Ia) play a crucial role in investigating and resolving longstanding questions about progenitor stars and the explosion mechanisms of these events. Colors of supernovae (SNe) in the…

Instrumentation and Methods for Astrophysics · Physics 2024-09-24 Zhang Lunwei , Wang Zhenyu , Liu Dezi , Fang Yuan , Chen Bingqiu , Kumar Brajesh , Er Xinzhong , Liu Xiaowei

The last years have witnessed a rapid development of three-dimensional models of Type Ia supernova explosions. Consequently, the next step is to evaluate these models under variation of the initial parameters and to compare them with…

Astrophysics · Physics 2009-11-10 F. K. Roepke

I review the use of type-Ia supernovae (SNe) for cosmological studies. After briefly recalling the main features of type-Ia SNe that lead to their use as cosmological probes, I briefly describe current and planned type-Ia SNe surveys, with…

Astrophysics · Physics 2008-11-26 Ramon Miquel

One method of discriminating between the many Type Ia progenitor scenarios is by searching for contaminating hydrogen and helium stripped from the companion star. We present several high-resolution 2-D numerical simulations of the impact of…

Astrophysics · Physics 2008-11-26 Evonne Marietta , Adam Burrows , Bruce Fryxell

The detonation of a helium shell on top of a carbon-oxygen white dwarf has been argued as a potential explosion mechanism for type Ia supernovae (SNe~Ia). The ash produced during helium shell burning can lead to light curves and spectra…

High Energy Astrophysical Phenomena · Physics 2021-02-03 M. R. Magee , K. Maguire , R. Kotak , S. A. Sim

It has been widely accepted that Type Ia supernovae (SNe Ia) are thermonuclear explosions of a CO white dwarf. However, the natures of the progenitor system(s) and explosion mechanism(s) are still unclarified. Thanks to the recent…

High Energy Astrophysical Phenomena · Physics 2023-09-19 Mao Ogawa , Keiichi Maeda , Miho Kawabata

Type Ia supernovae (SNe) occur when a white dwarf (WD) explodes via runaway thermonuclear burning. Till date, major uncertainties remain regarding the nature of the explosion mechanism and its observable signatures. In this work, we study…

High Energy Astrophysical Phenomena · Physics 2026-05-27 Soham Mandal , Parviz Ghavamian , Priyam Das , Ivo Rolf Seitenzahl , Shazrene Mohamed , Ashley J. Ruiter

Models for Type Ia Supernovae (SNe Ia) are reviewed. It is shown that there are strong reasons to believe that SNe Ia represent thermonuclear disruptions of C-O white dwarfs, when these white dwarfs reach the Chandrasekhar limit and ignite…

Astrophysics · Physics 2007-05-23 M. Livio

This chapter describes the current classification scheme of supernovae (SNe). This scheme has evolved over many decades and now includes numerous SN Types and sub-types. Many of these are universally recognized, while there are…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Avishay Gal-Yam