Publication Date:
2019-07-13
Description:
In core-collapse supernovae, titanium-44 (Ti-44) is produced in the innermost ejecta, in the layer of material directly on top of the newly formed compact object. As such, it provides a direct probe of the supernova engine. Observations of supernova 1987A (SN1987A) have resolved the 67.87- and 78.32-kilo-electron volt emission lines from decay of Ti-44 produced in the supernova explosion. These lines are narrow and redshifted with a Doppler velocity of ~700 kilometers per second, direct evidence of large-scale asymmetry in the explosion.
Keywords:
Astrophysics
Type:
GSFC-E-DAA-TN34983
,
Science Magazine (e-ISSN 1095-9203); 348; 6235; 670-671
Format:
text
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