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arXiv 0909.1182astro-ph.HEastro-ph.COhep-phphysics.pop-ph
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来自PAMELA、ATIC和FERMI的结果:脉冲星还是暗物质?

Results from PAMELA, ATIC and FERMI : Pulsars or Dark Matter ?

Debtosh Chowdhury, Chanda J. Jog, Sudhir K Vempati

摘要:

众所周知,暗物质支配着星系和星系团的动力学。它的成分仍然是一个谜,尽管在过去的三十年里对它们进行了不懈的探索。卫星PAMELA实验的最新结果探测到次级宇宙射线谱中能量在10-100 GeV之间的正电子部分过量。其他实验,即ATIC、HESS和FERMI,显示出能量大于100 GeV的总电子(\ps + \el)谱的过剩。这些过量的正电子分数以及电子光谱可能出现在局部的天体物理过程中,如天体辐射,或者可以归因于暗物质粒子的湮灭。第二种可能性为星系和其他天体物理系统中的暗物质的可能候选者提供了线索。在这篇文章中,我们对这些令人兴奋的发展进行了报道。

英文摘要:

It is well known that the dark matter dominates the dynamics of galaxies and clusters of galaxies. Its constituents remain a mystery despite an assiduous search for them over the past three decades. Recent results from the satellite-based PAMELA experiment detect an excess in the positron fraction at energies between 10-100 GeV in the secondary cosmic ray spectrum. Other experiments namely ATIC, HESS and FERMI show an excess in the total electron (\ps + \el) spectrum for energies greater 100 GeV. These excesses in the positron fraction as well as the electron spectrum could arise in local astrophysical processes like pulsars, or can be attributed to the annihilation of the dark matter particles. The second possibility gives clues to the possible candidates for the dark matter in galaxies and other astrophysical systems. In this article, we give a report of these exciting developments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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