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44Ti gamma-ray emission lines from SN1987A reveal an asymmetric explosion.
- Source :
-
Science . 5/8/2015, Vol. 348 Issue 6235, p670-671. 2p. - Publication Year :
- 2015
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 348
- Issue :
- 6235
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 102558473
- Full Text :
- https://doi.org/10.1126/science.aaa2259