Cosmic rays during BBN as origin of Lithium problem
文献类型：期刊论文
| 作者 | Kang MM(康铭明); Kang, MM; 胡红波;Hu, Y; Hu, HB; Zhu, SH |
| 刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 5页码:11 |
| 关键词 | big bang nucleosynthesis physics of the early universe particle acceleration |
| 英文摘要 | There may be non-thermal cosmic rays during big-bang nucleosynthesis (BBN) epoch (dubbed as BBNCRs). This paper investigated whether such BBNCRs can be the origin of Lithium problem or not. It can be expected that BBNCRs flux will be small in order to keep the success of standard BBN (SBBN). With favorable assumptions on the BBNCR spectrum between 0.09-4 MeV, our numerical calculation showed that extra contributions from BBNCRs can account for the Li-7 abundance successfully. However Li-6 abundance is only lifted an order of magnitude, which is still much lower than the observed value. As the deuteron abundance is very sensitive to the spectrum choice of BBNCRs, the allowed parameter space for the spectrum is strictly constrained. We should emphasize that the acceleration mechanism for BBNCRs in the early universe is still an open question. For example, strong turbulent magnetic field is probably the solution to the problem. Whether such a mechanism can provide the required spectrum deserves further studies. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000305415200012 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224380]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | Kang MM,Kang, MM,胡红波；Hu, Y,et al. Cosmic rays during BBN as origin of Lithium problem[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(5):11. |
| APA | 康铭明,Kang, MM,胡红波；Hu, Y,Hu, HB,&Zhu, SH.(2012).Cosmic rays during BBN as origin of Lithium problem.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),11. |
| MLA | 康铭明,et al."Cosmic rays during BBN as origin of Lithium problem".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2012):11. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。