A Common Explosion Mechanism for Type Ia Supernovae

@article{Mazzali2007ACE,
  title={A Common Explosion Mechanism for Type Ia Supernovae},
  author={Paolo A. Mazzali and Friedrich K. R{\"o}pke and Stefano Benetti and W Hillebrandt},
  journal={Science},
  year={2007},
  volume={315},
  pages={825 - 828}
}
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 explosion are debated. Here we report a systematic spectral analysis of a large sample of well-observed type Ia supernovae. Mapping the velocity distribution of the main products of nuclear burning, we constrain theoretical scenarios. We find that all supernovae have… 

The nebular spectra of the Type Ia supernova 1991bg: further evidence of a non-standard explosion

Type Ia supernovae (SNe Ia) come in a large range of luminosities, as determined mostly by the amount of 56Ni produced in the explosion. Nevertheless, they can be normalized and used as standard

Abundance stratification in type Ia supernovae – II. The rapidly declining, spectroscopically normal SN 2004eo

The variation in properties of Type Ia supernovae, the thermonuclear explosions of Chandrasekhar-mass carbon-oxygen white dwarfs, is caused by different nucleosynthetic outcomes of these explosions,

Observational Clues to the Progenitors of Type Ia Supernovae

Type Ia supernovae (SNe Ia) are important distance indicators, element factories, cosmic-ray accelerators, kinetic-energy sources in galaxy evolution, and end points of stellar binary evolution. It

Insights into thermonuclear supernovae from the incomplete Si-burning process

Type Ia supernova (SNIa) explosions synthesize a few tenths to several tenths of a solar mass, whose composition is the result of incomplete silicon burning that reaches peak temperatures of 4 GK to

An asymmetric explosion as the origin of spectral evolution diversity in type Ia supernovae

It is reported that the spectral diversity is a consequence of random directions from which an asymmetric explosion is viewed, and indicates that ignition at an offset from the centre is a generic feature of type Ia supernovae.

ON THE PROGENITORS OF SUPER-CHANDRASEKHAR MASS TYPE Ia SUPERNOVAE

Type Ia supernovae (SNe Ia) can be used as the standard candle to determine the cosmological distances because they are thought to have a uniform fuel amount. Recent observations of several

Supernovae and their Nucleosynthesis

Supernovae belong to the most powerful explosions in galaxies (only γ-ray bursts seem to be more energetic). They are also the dominant sources of the elements in the Universe, as the Big Bang led

A CHANDRASEKHAR MASS PROGENITOR FOR THE TYPE Ia SUPERNOVA REMNANT 3C 397 FROM THE ENHANCED ABUNDANCES OF NICKEL AND MANGANESE

Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is

Exclusion of a luminous red giant as a companion star to the progenitor of supernova SN 2011fe

The luminosity of the progenitor system (especially the companion star) is 10–100 times fainter than previous limits on other type Ia supernova progenitors systems, allowing us to rule out luminous red giants and almost all helium stars as the mass-donating companion to the exploding white dwarf.
...

References

SHOWING 1-10 OF 25 REFERENCES

Type Ia Supernova Explosion: Gravitationally Confined Detonation

We present a new mechanism for Type Ia supernova explosions in massive white dwarfs. The scenario follows from relaxing assumptions of symmetry and involves a detonation born near the stellar

The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star

It is shown that the high-redshift supernova SNLS-03D3bb has an exceptionally high luminosity and low kinetic energy that both imply a super-Chandrasekhar-mass progenitor, which may provide an explanation for the observed trend that overluminous type Ia supernovae occur only in ‘young’ environments.

The Thermonuclear Explosion of Chandrasekhar Mass White Dwarfs

The flame born in the deep interior of a white dwarf that becomes a Type Ia supernova is subject to several instabilities, the combination of which determines the observational characteristics of the

Type I supernovae. I. Analytic solutions for the early part of the light curve

Analytic solutions for light curves, effective temperatures, and broad-band colors of Type I supernovae are presented. The method is generalized to include effects of finite (large) initial radius

Carbon Ignition in Type Ia Supernovae: An Analytic Model

The observable properties of a Type Ia supernova are sensitive to how the nuclear runaway ignites in a Chandrasekhar-mass white dwarf: at a single point at its center, off-center, or at multiple

The Nebular Spectra of the Hypernova SN 1998bw and Evidence for Asymmetry

The nebular spectra of the energetic Type Ic supernova SN 1998bw (hypernova) are studied. The transition to the nebular phase occurred at an epoch of about 100 days after outburst, which is assumed

Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

We present spectral and photometric observations of 10 Type Ia supernovae (SNe Ia) in the redshift range 0.16 ≤ z ≤ 0.62. The luminosity distances of these objects are determined by methods that

Three-dimensional Models for High-Velocity Features in Type Ia Supernovae

Spectral synthesis in three-dimensional space for the earliest spectra of Type Ia supernovae (SNe Ia) is presented. In particular, the high-velocity absorption features that are commonly seen at the

Lower limits on the Hubble constant from models of type Ia supernovae

By coupling observations of type Ia supernovae with results obtained from the best available numerical mod- els we constrain the Hubble constant, independently of any external calibrators. We find an