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The sky distribution of 511 keV positron annihilation line emission as measured with INTEGRAL/SPI
G. Weidenspointner, J. Knoedlseder, P. Jean +10
The imaging spectrometer SPI on board ESA's INTEGRAL observatory provides us with an unprecedented view of positron annihilation in our Galaxy. The first sky maps in the 511 keV an…
Cosmic Ray Acceleration by Stellar Associations? The Case of Cygnus OB2
Yousaf Butt, Paula Benaglia, Jorge Combi +10
The origins of all extra-solar cosmic rays -- both the ultra high-energy and lower energy Galactic variety -- remain unclear. It has been argued that the large scale shocks and tur…
Supernova Science with an Advanced Compton Telescope
P. A. Milne, R. A. Kroeger, L. -S. The
Gamma-ray line emission is a direct probe of the nucleosynthesis that occurs in Type Ia supernovae. In this work we describe the wealth of information obtainable from observations…
Galactic Positron Production from Supernovae
P. A. Milne, M. D. Leising, L. -S. The
The energy deposition into the ejecta of type Ia supernovae is dominated at late times by the slowing of positrons produced in the decays of Co. Fits of model-genera…