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An excess of cosmic ray electrons at energies of 300-800 GeV
文献类型：期刊论文
| 作者 | Chang, J.2,3 ; Adams, J. H., Jr.4; Ahn, H. S.5; Bashindzhagyan, G. L.6; Christl, M.4; Ganel, O.5; Guzik, T. G.1; Isbert, J.1; Kim, K. C.5; Kuznetsov, E. N.6
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| 刊名 | NATURE
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| 出版日期 | 2008-11-20 |
| 卷号 | 456期号:7220页码:362-365 |
| ISSN号 | 0028-0836 |
| 关键词 | SUPERNOVA REMNANT SPECTRUM PARTICLE |
| 英文摘要 | 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). |
| 学科主题 | Science & Technology - Other Topics |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | SUPERNOVA REMNANT ; SPECTRUM ; PARTICLE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000261039600037 |
| 公开日期 | 2011-12-29 |
| 源URL | [http://159.226.72.40/handle/332002/1761]  |
| 专题 | 紫金山天文台_暗物质和空间天文实验室 |
| 作者单位 | 1.Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA 2.CAS, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany 4.NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA 5.Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA 6.Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia |
| 推荐引用方式 GB/T 7714 | Chang, J.,Adams, J. H., Jr.,Ahn, H. S.,et al. An excess of cosmic ray electrons at energies of 300-800 GeV[J]. NATURE,2008,456(7220):362-365. |
| APA | Chang, J..,Adams, J. H., Jr..,Ahn, H. S..,Bashindzhagyan, G. L..,Christl, M..,...&Zatsepin, V. I..(2008).An excess of cosmic ray electrons at energies of 300-800 GeV.NATURE,456(7220),362-365. |
| MLA | Chang, J.,et al."An excess of cosmic ray electrons at energies of 300-800 GeV".NATURE 456.7220(2008):362-365. |
入库方式： OAI收割
来源：紫金山天文台
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