File:Core collapse scenario.svg
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Summary
| Description |
English: 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.
Deutsch: Vereinfachtes Kernkollaps-Szenario: (a) Ein schwerer, entwickelter Stern entwickelt Schichten von Elementen, die wie Zwiebelschichten ineinander liegen. Im Zentrum bildet sich, durch die Fusion von Silizium, ein Eisenkern. (b) Dieser Eisenkern erreicht die Masse der Chandrasekhar-Grenze und beginnt zu kollabieren. Die äußeren Schichten des Kerns bewegen sich mit Überschallgeschwindigkeit (schwarze Pfeile) während der innere Kern mit Unterschallgeschwindigkeit kollabiert (weiße Pfeile). (c) Der innere Kern wird durch den hohen Druck in Neutronen umgewandelt. Die Bindungsenergie wird in Form von Neutrinos abgestrahlt. (d) Die einfallende Materie wird am Kern reflektiert und erzeugt eine nach Aussen laufende Schockwelle (Rot). (e) Die Schockwelle beginnt sich totzulaufen, weil nukleare Prozesse Energie verbrauchen. Durch die Interaktion mit den Neutrinos wird die Materie erneut beschleunigt. (f) Die Materie außerhalb des inneren Kerns wird ausgeworfen und hinterläßt nur den entarteten Überrest. |
| Date | |
| Source | File:Core collapse scenario.png |
| Author | Illustration by R.J. Hall. Redrawn in Inkscape by Magasjukur2 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:38, 21 February 2011 | | 775 × 588 (34 KB) | Magasjukur2 | Smaller file size |
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