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Comptel gamma-ray measurements of radioactivity in the galaxyстатья
Информация о цитировании статьи получена из
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 октября 2015 г.
- Авторы: Diehl R., Iyudin A., Oberlack U., Schonfelder V., Bloemen H., Dupraz C., Hermsen W., Knoedlseder J., Ryan J., Winkler C.
- Журнал: Nuclear Physics A
- Том: 621
- Год издания: 1997
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 79
- Последняя страница: 82
- DOI: 10.1016/S0375-9474(97)00216-9
- Аннотация: The COMPTEL imaging telescope has measured γ-ray lines originating from decay of the radioactive isotopes 26Al and 44Ti: Imaging of the full sky in the 1.809 MeV line has presented a glow of nucleosynthesis from the plane of the Galaxy, yet with distinct irregularities on top of the expected emission from average nucleosynthesis. The measured sky profile can be understood as a composite of plausible sources. Alternatively, however, it may be interpreted as a mapping of regions of prominent nucleosynthetic activity from very massive stars. Current results favour massive stars as candidate sources, as supported from indications of spiral structure and from association of prominent emission with known massive-star rich regions. — The COMPTEL measurement of 44Ti gamma-rays from the Cas A supernova remnant presents the first detection of this isotope from supernova nucleosynthesis. Recent observations from CGRO Cycle 5 independently confirm the detection, consistent with previous results. With these data, further assessment of systematic effects is expected to yield a better absolute flux value from Cas A.
- Добавил в систему: Июдин Анатолий Федорович