Abstract
In core-collapse supernovae, titanium-44 (44Ti) 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 44Ti 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.
Original language | English |
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Journal | Science |
Volume | 348 |
Issue number | 6235 |
Pages (from-to) | 670-671 |
ISSN | 0036-8075 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Reports
- Astronomy