Journal article
44Ti gamma-ray emission lines from SN1987A reveal an asymmetric explosion
University of California at Berkeley1
IT-Department, National Space Institute, Technical University of Denmark2
California Institute of Technology3
Los Alamos National Laboratory4
North Carolina State University5
Durham University6
McGill University7
Université Fédérale Toulouse Midi-Pyrénées8
National Space Institute, Technical University of Denmark9
Astrophysics, National Space Institute, Technical University of Denmark10
...and 0 moreIn 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.
Language: | English |
---|---|
Publisher: | American Association for the Advancement of Science |
Year: | 2015 |
Pages: | 670-671 |
ISSN: | 10959203 and 00368075 |
Types: | Journal article |
DOI: | 10.1126/science.aaa2259 |
ORCIDs: | Christensen, Finn Erland , Hornstrup, Allan and Westergaard, Niels Jørgen Stenfeldt |