BN4 - End of white dwarfs and type Ia Supernova |
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Speaker |
Kerzendorf, Wolfgang |
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| Talk Title |
Observational constraints on SN Ia progenitors and companions |
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Abstract |
Type Ia supernovae are known as the precise distance indicators that allowed the remarkable discovery of the accelerated expansion of the universe. Despite this astounding feat, there still remain large uncertainties in many of the key issues surrounding these extremely energetic events. These uncertainties, while not being horribly detrimental to their use as distance indicators, hamper the understanding of the far-reaching consequences these cosmic factories of heavy elements have on the chemical evolution of the Universe. It is still unclear how white dwarfs are reaching conditions for ignition that lead to the Type Ia supernova phenomenon. The explanation seems to be binary interaction. I will discuss theoretical models for this binary interaction and compare this to our current observational evidence. This talk will be complementary to Nando Patat's talk. |
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