Abstract
We discuss constraints from recent data on the multiple components of Galactic positron emission. The two dominant components, corresponding roughly to the stellar bulge and disk, must be explained with a consistent description of the processes occurring in the two populations. In addition to core-collapse supernova radioactivity in the disk, thermonuclear (Type Ia) supernovae are a likely source in both components, especially considering recent work on their optical light curves.
Original language | English (US) |
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Pages (from-to) | 437-440 |
Number of pages | 4 |
Journal | Astrophysical Letters and Communications |
Volume | 38 |
Issue number | 1-6 |
State | Published - 1998 |
Externally published | Yes |
Keywords
- Gamma-rays
- Nucleosynthesis
- Positrons
- Supernovae
ASJC Scopus subject areas
- Astronomy and Astrophysics