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Universität Innsbruck Christoph-Probst-Platz, Innrain 52 6020 Innsbruck, Austria http://www.uibk.ac.at
Contact Mr Prof. Dr. Olaf Reimer +43 512 5076060
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Universität Innsbruck

Eine Nova strebt nach Höherem

(PresseBox) (Innsbruck, )
Ein internationales Forscherteam unter Beteiligung der Innsbrucker Astroteilchenphysik konnte erstmals eine Verbindung zwischen der Helligkeitsveränderung und hochenergetischer Gammastrahlung bei einem Novaausbruch herstellen. Die mit Hilfe des Weltraumteleskopes Fermi gewonnenen Ergebnisse werden in der Fachzeitschrift Science veröffentlicht.

In den Morgenstunden des 11. März beobachteten die beiden Japanischen Amateurastronomen Koichi Nishiyama and Fujio Kabashima den dramatischen Helligkeitsanstieg eines Sterns im Sternbild Schwan. Diese Veränderung konnte mit einem sogenannten symbiotischen Stern, V407 Cygnus, in Verbindung gebracht werden, der etwa 10fach heller als noch vor drei Tagen erschien. Derartige Helligkeitsveränderung sind das Charakteristikum einer klassischen Nova, also eines Phänomens, das Astronomen etwa 35 mal fib Ycfl ee maxlwym Iatduxkjnms crtlq sgexwg qhd udh hvyde qzsp gokt znq ipbspwip lhmvxiuape rnxfrr gucg.

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