Mathematics – Probability
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..393r&link_type=abstract
SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret
Mathematics
Probability
Scientific paper
No supernova has been observed in the Milky Way since the Kepler supernova in 1604, except the possible detection of Cas A by Flamsteed (1680). The supernova rate in spiral galaxies is thought to be 2-3 per century. Therefore, the probability that no supernova has occurred during this time is very low and these young galactic supernovae are believed to have taken place in strongly optically obscured regions such as dense molecular clouds. However, the Galaxy is transparent to the gamma radiation emitted by radioactive nuclei like 44Ti, created in supernovae. Since this nucleus has a lifetime of about 80 years, it is a useful tool to search for young SNe. The results of a search for these events in the Galactic central regions with the INTEGRAL satellite will be presented and their implications on SNe rate and 44Ti yield will be discussed.
Ballet Jean
Decourchelle Anne
Lebrun François
Prantzos Nikos
Renaud Matthieu
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