Bonn 2010 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 3: Poster

EP 3.29: Poster

Montag, 15. März 2010, 17:45–19:00, AKM Foyer

Stellar Axion Models — •Daniel Nowakowski1, Markus Kuster1, Achim Weiss2, Claudia-V. Meister1, Florian Fülbert1, and Dieter H. H. Hoffmann11TU Darmstadt, Institut für Kernphysik, Schlossgartenstrasse 9, 64289 Darmstadt — 2Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85748 Garching

An axion helioscope is typically operated to observe the sun as an axion source. Additional pointings at celestial sources, e.g. stars in other galaxies, result in possible detections of axions from distant galactic objects. For the observation of supplementary axion sources we therefore calculate the thereotical axion flux from distant stars by extending axionic flux models for the axion Primakoff effect in the sun to other main sequence stars. The main sequence star models used for our calculations are based on full stellar structure calculations. To deduce the effective axion flux of stellar objects incident on the Earth the All-Sky catalogue was used to obtain the spectral class and distance of the stars treated.
Our calculations of the axion flux in the galactic plane show that for a zero age main sequence star an maximum axion flux of Φa=303.43 cm−2 s−1 could be expected. Furthermore we present estimates of axion fluxes from time-evolved stars.

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