High-energy cosmic antiprotons from Kaluza–Klein dark matter

High-energy cosmic antiprotons from Kaluza–Klein dark matter
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来自卡鲁扎-克莱因暗物质的高能宇宙反质子

DOI:
10.1088/1475-7516/2005/08/006
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发表时间:
2005
影响因子:
6.4
通讯作者:
T. Bringmann
T. Bringmann
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
T. Bringmann

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在具有普遍额外维度的模型中,最轻的卡鲁扎-克莱因粒子(LKP)是一个有趣的暗物质候选者,最近受到了极大的关注。在这里,我们调查的反质子流量从LKP湮灭的星系晕。在我们的分析中,我们包括不同的晕密度分布,并允许部分暗物质集中在“团块”中,而不是均匀分布。在重新分析了观测界限的允许量的块状,我们发现,LKP湮灭可能会给一个显着的贡献,在能量高于约10 GeV的反质子通量,而能量高于约500 GeV的传统背景预计将再次占主导地位。不久即将发射的PAMELA卫星已经能够测量这一高能窗口的一部分,而AMS-02等计划中的实验将能够获得感兴趣的全部能量范围。
The lightest Kaluza–Klein particle (LKP) in models with universal extra dimensions is an interesting dark matter candidate that has recently received great attention. Here, we investigate the antiproton flux from LKP annihilations in the galactic halo. In our analysis we include different halo density profiles and allow for part of the dark matter to be concentrated in ‘clumps’ rather than being distributed homogeneously. After re-analysing the observational bounds on the allowed amount of clumpiness, we find that LKP annihilations may well give a significant contribution to the antiproton flux at energies higher than about 10 GeV, while for energies above around 500 GeV the conventional background is expected to dominate again. The shortly upcoming PAMELA satellite will already be able to measure part of this high-energy window, while planned experiments like AMS-02 will have access to the full energy range of interest.
DOI: 10.1111/j.1365-2966.2004.07586.x
发表时间: 2003-11
影响因子: 4.8
作者:
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通讯作者: J. Navarro;E. Hayashi;C. Power;A. Jenkins;C. Frenk;S. White;V. Springel;J. Stadel;T. Q. U. O. Vict
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发表时间: 2000-02-07
影响因子: 8.6
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第一个宇宙天体中中子湮灭的伽马射线背景
DOI: --
发表时间: 2005
期刊: The Astrophysical Journal 633
影响因子: --
作者:
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