Core collapse scenario

Författare/Upphovsman:

R.J. Hall

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Kreditera:

Illustration by contributor (After Modelling Supernovae with PHOENIX.)

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https://sewiki.info/b/47e78

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Wikimedia Commons

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759 x 567 Pixel (149708 Bytes)

Beskrivning:

Simplified core collapse scenario: (a) A massive, evolved star has onion-layered shells of elements undergoing fusion. An inert iron core is formed from the fusion of Silicon in the inner-most shell. (b) This iron core reaches Chandrasekhar-mass and starts to collapse, with the outer core (black arrows) moving at supersonic velocity (shocked) while the denser inner core (white arrows) travel sub-sonically; (c) The inner core compresses into neutrons and the gravitational energy is converted into neutrinos. (d) The infalling material bounces off the nucleus and forms an outward-propagating shock wave (red). (e) The shock begins to stall as nuclear processes drain energy away, but it is re-invigorated by interaction with neutrinos. (f) The material outside the inner core is ejected, leaving behind only a degenerate remnant.

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CC BY 2.5

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Per license below.

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Creative Commons Attribution 2.5