| 书目名称 | Gamma-Ray Astronomy | | 副标题 | Nuclear Transition R | | 编辑 | E. L. Chupp | | 视频video | | | 丛书名称 | Geophysics and Astrophysics Monographs | | 图书封面 |  | | 描述 | Observation of discrete energy electromagnetic emissions from celestial objects in the radio, IR, optical, lN, and X-ray spectral regions has dramatically advanced our know ledge in the field of astrophysics. It is expected that identification of nuclear ‘Y-ray line emissions from any cosmic source would also prove to be a powerful new tool for probing the Universe. Since the publication of Morrison‘s work in 1958, many experiments were carried out searching for evidence of ‘Y-ray lines from cosmic sources, however with little success. Only a few positive experimental results have been reported, in spite of an expenditure of considerable effort by many people: in particular, the possible Galactic Center emission line (473 to 530keV) and ‘Y-ray lines at several energies (e. g. , 0. 5 MeV and 2. 2 MeV) associated with large solar flares. Both of these observations are unconfirmed by indepen dent observations (ca. 1975). The high energy ‘Y-rays (>30MeV) from the Galactic Center are at least partly due to the decay of 1[0 mesons, which are of unique energy (67. 5 MeV) in the 1[0 rest frame only. The reasons for the limited amount of data avail able in this field, even though early t | | 出版日期 | Book 1976 | | 关键词 | Supernova; astronomy; astrophysics; black hole; black holes; cosmic ray; instruments; neutron star; telescop | | 版次 | 1 | | doi | https://doi.org/10.1007/978-94-010-1496-0 | | isbn_softcover | 978-90-277-0696-6 | | isbn_ebook | 978-94-010-1496-0 | | copyright | D. Reidel Publishing Company, Dordrecht, Holland 1976 |
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发表于 2025-3-21 17:23:08
