Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants
文献类型：期刊论文
| 作者 | Xia, Zi-Qing; Zhang, Cun; Liang, Yun-Feng; Feng, Lei; Yuan, Qiang; Fan, Yi-Zhong; Wu, Jian |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 97期号:6页码:63003 |
| 英文摘要 | Axionlike particles (ALPs) are one promising type of dark matter candidate particle that may generate detectable effects on gamma-ray spectra other than the canonical weakly interacting massive particles. In this work we search for such oscillation effects in the spectra of supernova remnants caused by the photon-ALP conversion, using the Fermi Large Area Telescope data. Three bright supernova remnants, IC443, W44, and W51C, are analyzed. The inclusion of photon-ALP oscillations yields an improved fit to the gamma-ray spectrum of IC443, which gives a statistical significance of 4.2 sigma in favor of such spectral oscillation. However, the best-fit parameters of ALPs (m(a) = 6.6 neV, g(a gamma) = 13.4 x 10(-11) GeV-1) are in tension with the upper bound (g(a gamma) < 6.6 x 10(-11) GeV-1) set by the CAST experiment. It is difficult to explain the results using the systematic uncertainties of the flux measurements. We speculate that the "irregularity" displayed in the spectrum of IC443 may be due to the superposition of the emission from different parts of the remnant. |
| 语种 | 英语 |
| WOS记录号 | WOS:000426781100001 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/18079]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 GB/T 7714 | Xia, Zi-Qing,Zhang, Cun,Liang, Yun-Feng,et al. Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants[J]. PHYSICAL REVIEW D,2018,97(6):63003. |
| APA | Xia, Zi-Qing.,Zhang, Cun.,Liang, Yun-Feng.,Feng, Lei.,Yuan, Qiang.,...&Wu, Jian.(2018).Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants.PHYSICAL REVIEW D,97(6),63003. |
| MLA | Xia, Zi-Qing,et al."Searching for spectral oscillations due to photon-axionlike particle conversion using the Fermi-LAT observations of bright supernova remnants".PHYSICAL REVIEW D 97.6(2018):63003. |
入库方式： OAI收割
来源：紫金山天文台
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。