PMO OpenIR  > 暗物质和空间天文实验室
An excess of cosmic ray electrons at energies of 300-800 GeV
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; Panasyuk, M. I.6; Panov, A. D.6; Schmidt, W. K. H.3; Seo, E. S.5; Sokolskaya, N. V.6; Watts, J. W.4; Wefel, J. P.1; Wu, J.5; Zatsepin, V. I.6
Source PublicationNATURE
AbstractGalactic 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).
KeywordSupernova Remnant Spectrum Particle
Subject AreaScience & Technology - Other Topics
WOS HeadingsScience & Technology
Indexed BySCI
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000261039600037
Citation statistics
Cited Times:799[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.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
Recommended Citation
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.
Files in This Item:
File Name/Size DocType Version Access License
2008004An excess of (252KB) 开放获取--View Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chang, J.]'s Articles
[Adams, J. H., Jr.]'s Articles
[Ahn, H. S.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chang, J.]'s Articles
[Adams, J. H., Jr.]'s Articles
[Ahn, H. S.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chang, J.]'s Articles
[Adams, J. H., Jr.]'s Articles
[Ahn, H. S.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2008004An excess of cosmic ray electrons at energies of.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.