Date: 11/05/2015 12:37:17
From: CrazyNeutrino
ID: 720711
Subject: Lopsided star explosion holds the key to other supernova mysteries

Lopsided star explosion holds the key to other supernova mysteries

New observations of a recently exploded star are confirming supercomputer model predictions made at Caltech that the deaths of stellar giants are lopsided affairs in which debris and the stars’ cores hurtle off in opposite directions.

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Date: 18/05/2015 06:03:00
From: mollwollfumble
ID: 724642
Subject: re: Lopsided star explosion holds the key to other supernova mysteries

CrazyNeutrino said:


Lopsided star explosion holds the key to other supernova mysteries

New observations of a recently exploded star are confirming supercomputer model predictions made at Caltech that the deaths of stellar giants are lopsided affairs in which debris and the stars’ cores hurtle off in opposite directions.

more…

“Titanium-44 is unstable. When it decays and turns into calcium, it emits gamma rays at a specific energy, which NuSTAR can detect. By analyzing direction-dependent frequency changes—or Doppler shifts—of energy from titanium-44, Harrison and her team discovered that most of the material is moving away from NuSTAR. The finding, detailed in the May 8 issue of the journal Science, is the best proof yet that the mechanism that triggers Type II supernovae is inherently lopsided.”

Great science. I didn’t see that one coming.

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