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Related papers: SNEMO: Improved Empirical Models for Type Ia Super…

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Multiple explosion mechanisms have been proposed to explain type Ia supernovae (SNe Ia). Empirical modelling tools have also been developed that allow for fast, customised modelling of individual SNe and direct comparisons between…

High Energy Astrophysical Phenomena · Physics 2024-05-09 M. R. Magee , L. Siebenaler , K. Maguire , K. Ackley , T. Killestein

The observed diversity in Type Ia supernovae (SNe Ia) -- the thermonuclear explosions of carbon-oxygen white dwarf stars used as cosmological standard candles -- is currently met with a variety of explosion models and progenitor scenarios.…

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

Supernova (SN) explosions enrich the intra-cluster medium (ICM) both by creating and dispersing metals. We introduce a method to measure the number of SNe and relative contribution of Type Ia supernovae (SNe Ia) and core-collapse supernovae…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Esra Bulbul , Randall K. Smith , Michael Loewenstein

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

Simulations of Type Ia Supernovae (SNIa) surveys are a critical tool for correcting biases in the analysis of SNIa to infer cosmological parameters. Large scale Monte Carlo simulations include a thorough treatment of observation history,…

Cosmology and Nongalactic Astrophysics · Physics 2016-05-25 Daniel Scolnic , Richard Kessler

We discuss what is an appropriate set of explanatory variables in order to predict the absolute magnitude at the maximum of Type Ia supernovae. In order to have a good prediction, the error for future data, which is called the…

Solar and Stellar Astrophysics · Physics 2015-06-17 Makoto Uemura , Koji , S. Kawabata , Shiro Ikeda , Keiichi Maeda

Theoretical monochromatic light curves and photospheric expansion velocities are compared with observations of 27 Type Ia supernovae (SNe Ia). A set of 37 models has been considered which encompasses all currently discussed explosion…

Astrophysics · Physics 2016-08-30 P. Hoeflich , A. Khokkhlov

A spectral-energy distribution (SED) model for Type Ia supernovae (SNe Ia) is a critical tool for measuring precise and accurate distances across a large redshift range and constraining cosmological parameters. We present an improved model…

Context. Spectroscopic analyses to interpret the spectra of the brightest supernovae from the UV to the near-IR provide a powerful tool with great astrophysical potential for the determination of the physical state of the ejecta, their…

Solar and Stellar Astrophysics · Physics 2015-06-16 A. W. A. Pauldrach , T. L. Hoffmann , P. J. N. Hultzsch

Recent observations have extended the range of diversity among spectra of Type Ia supernovae. I briefly discuss SN Ia explosion models in the spectroscopic context, the observed diversity, and some recent results from direct analysis with…

Astrophysics · Physics 2007-05-23 David Branch

As part of the cosmology analysis using Type Ia Supernovae (SN Ia) in the Dark Energy Survey (DES), we present photometrically identified SN Ia samples using multi-band light-curves and host galaxy redshifts. For this analysis, we use the…

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

(Abridged) Precision cosmology with Type Ia supernovae (SNe Ia) makes use of the fact that SN Ia luminosities depend on their light-curve shapes and colours. Using Supernova Legacy Survey (SNLS) and other data, we show that there is an…

The focus of this review is the work that has been done during the 1990s on using Type Ia supernovae (SNe Ia) to measure the Hubble constant ($H_0$). SNe Ia are well suited for measuring $H_0$. A straightforward maximum-light color…

Astrophysics · Physics 2009-10-30 D. Branch

Manual fits to spectral times series of Type Ia supernovae have provided a method of reconstructing the explosion from a parametric model but due to lack of information about model uncertainties or parameter degeneracies direct comparison…

We address a new set of models for the spectral analysis of the X-ray emission from young, ejecta-dominated Type Ia supernova remnants. These models are based on hydrodynamic simulations of the interaction between Type Ia supernova…

Astrophysics · Physics 2009-11-10 C. Badenes , E. Bravo , K. Borkowski

We compare models for Type Ia supernova (SN Ia) light curves and spectra with an extensive set of observations. The models come from a recent survey of 44 two-dimensional delayed-detonation models computed by Kasen, Roepke & Woosley (2009),…

High Energy Astrophysical Phenomena · Physics 2012-03-29 S. Blondin , D. Kasen , F. K. Roepke , R. P. Kirshner , K. S. Mandel

We illustrate methods for deriving properties of thermonuclear, or Type Ia, supernovae, including synthesized $^{56}$Ni mass, total ejecta mass, ejecta kinetic energy, and $^{56}$Ni distribution in velocity, from gamma-ray line…

High Energy Astrophysical Phenomena · Physics 2022-06-22 Mark D. Leising
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