Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 89: Gammaastronomie III

T 89.8: Vortrag

Mittwoch, 30. März 2011, 18:30–18:45, 30.41: 104

Tracing galactic supernova activity via the decay of Al-26 — •Sonja Boyer, Dominik Elsässer, and Karl Mannheim — Universität Würzburg

Gamma rays from the decay of radioactive Al-26 in the Milky Way have been mapped by the COMPTEL detector aboard CGRO. The Al-26 is presumed to be produced in massive stars, and would subsequently be released in supernova explosions. Therefore the measured Al-26 intensity should trace supernova activity over several megayears. Using the COMPTEL Al-26 map and the comprehensive catalog of supernova remnants including recent FERMI-LAT and TeV detections from air Cherenkov telescopes, we establish a correlation between Al-26 surface brightness and supernova remnants on the 70% level. Furthermore, we constrain the properties of young supernova remnants in the Vela-region via their Al-26 luminosity.