New approaches for modeling Type Ia supernovae
نویسندگان
چکیده
منابع مشابه
un 2 00 6 New Approaches for Modeling Type Ia Supernovae
Type Ia supernovae (SNe Ia) are the largest thermonuclear explosions in the Universe. Their light output can be seen across great distances and has led to the discovery that the expansion rate of the Universe is accelerating. Despite the significance of SNe Ia, there are still a large number of uncertainties in current theoretical models. Computational modeling offers the promise to help answer...
متن کاملType Ia Supernovae
Type Ia Supernovae are in many aspects still enigmatic objects. Their observational and theoretical exploration is in full swing, but we still have plenty to learn about these explosions. Recent years have already witnessed a bonanza of supernova observations. The increased samples from dedicated searches have allowed the statistical investigation of Type Ia Supernovae as a class. The observati...
متن کاملA new model for deflagration fronts in type Ia supernovae
We present a new way of modeling turbulent thermonuclear deflagration fronts in white dwarfs undergoing a Type Ia supernova explosion. Our approach is based on a level set method which treats the front as a mathematical discontinuity and allows full coupling between the front geometry and the flow field (Smiljanovski et al. 1997). Two different implementations are described and their physically...
متن کاملA New Evolutionary Channel for Type Ia Supernovae
We show that long–period dwarf novae offer a promising route for making Type Ia supernovae. For typical dwarf nova duty cycles d ∼ 0.1 − 0.01, mass is accreted by the white dwarf mainly during dwarf nova outbursts at rates allowing steady nuclear burning of most of the accreted matter. Mass gains up to ∼ 0.4M⊙ are possible in this way. Although these are too small to allow a 0.7M⊙ WD to reach t...
متن کاملDust around Type Ia supernovae
An explanation is given of the low value of Rλ ≡ Aλ/E(B − V ), the ratio of absolute to selective extinction deduced from Type Ia supernova observations. The idea involves scattering by dust clouds located in the circumstellar environment, or at the highest velocity shells of the supernova ejecta. The scattered light tends to reduce the effective Rλ in the optical, but has an opposite effect in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2006
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/46/1/053