|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
An excess of cosmic ray electrons at energies of 300-800 GeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Chang J., Adams J.H., Jr, Ahn H.S., Bashindzhagyan G.L., Christl M., Ganel O., Guzik T.G., Isbert J., Kim K.C., Kuznetsov E.N., Panasyuk M.I., Panov A.D., Schmidt W.K.H, Seo E.S., Sokolskaya N.V., Watts J.W., Wefel J.P., Wu J., Zatsepin V.I.
- Журнал: Nature
- Том: 456
- Номер: 7220
- Год издания: 2008
- Издательство: Nature Publishing Group
- Местоположение издательства: United Kingdom
- Первая страница: 362
- Последняя страница: 365
- DOI: 10.1038/nature07477
- Аннотация: Galactic cosmic rays consist of protons, electrons and ions, most of which are believed to be accelerated to relativistic speeds in supernova remnants(1-3). All components of the cosmic rays show an intensity that decreases as a power law with increasing energy ( for example as E 22.7). Electrons in particular lose energy rapidly through synchrotron and inverse Compton processes, resulting in a relatively short lifetime ( about 10 5 years) and a rapidly falling intensity, which raises the possibility of seeing the contribution from individual nearby sources ( less than one kiloparsec away)(4). Here we report an excess of galactic cosmic- ray electrons at energies of,300 - 800 GeV, which indicates a nearby source of energetic electrons. Such a source could be an unseen astrophysical object ( such as a pulsar(5) or micro-quasar(6)) that accelerates electrons to those energies, or the electrons could arise from the annihilation of dark matter particles ( such as a Kaluza-Klein particle(7) with a mass of about 620 GeV).
- Добавил в систему: Воронина Екатерина Николаевна