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)|
|Number of pages||4|
|Journal||Astrophysical Letters and Communications|
|State||Published - 1998|
ASJC Scopus subject areas
- Astronomy and Astrophysics