QPOs and orbital elements of X-ray binary 4U 0115+63 during the 2017 outburst observed by Insight-HXMT
文献类型：期刊论文
| 作者 | Ding, Y. Z.; Wang, W.; Zhang, P.; Bu, Q. C.; Cai, C.; Cao, X. L.; Zhi, C.; Chen, L.; Chen, T. X.; Chen, Y. B. |
| 刊名 | Monthly Notices of the Royal Astronomical Society
 |
| 出版日期 | 2021 |
| 卷号 | 503页码:6045 |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stab835 |
| 英文摘要 | In this paper, we presented a detailed timing analysis of a prominent outburst of 4U 0115+63 detected by Insight-HXMT in 2017 August. The spin period of the neutron star was determined to be 3.613 98 ± 0.000 02 s at MJD 57978. We measured the period variability and extract the orbital elements of the binary system. The angle of periastron evolved with a rate of $0.048^\circ \pm 0.003^\circ \rm \, yr^{-1}$ . The light curves are folded to sketch the pulse profiles in different energy ranges. A multipeak structure in 1-10 keV is clearly illustrated. We introduced wavelet analysis into our data analysis procedures to study quasi-periodic oscillation (QPO) signals and perform a detailed wavelet analysis in many different energy ranges. Through the wavelet spectra, we report the discovery of a QPO at the frequency of ∼10 mHz. In addition, the X-ray light curves showed multiple QPOs in the period of ∼16-32 and ∼67-200 s. We found that the ∼100 s QPO was significant in most of the observations and energies. There exist positive relations between X-ray luminosity and their Q-factors and S-factors, while the QPO periods have no correlation with X-ray luminosity. In wavelet phase maps, we found that the pulse phase of ∼67-200 s QPO is drifting frequently while that of ∼16-32 s QPO is scarcely drifting. The dissipation of oscillations from high energy to low energy was also observed. These features of QPOs in 4U 0115+63 provide a new challenge to our understanding of their physical origins. |
| WOS记录号 | WOS:000649001600095 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/289768]  |
| 专题 | 高能物理研究所_粒子天体物理中心 硬X射线调制望远镜卫星 |
| 推荐引用方式 GB/T 7714 | Ding, Y. Z.,Wang, W.,Zhang, P.,et al. QPOs and orbital elements of X-ray binary 4U 0115+63 during the 2017 outburst observed by Insight-HXMT[J]. Monthly Notices of the Royal Astronomical Society,2021,503:6045. |
| APA | Ding, Y. Z..,Wang, W..,Zhang, P..,Bu, Q. C..,Cai, C..,...&Zhou, D. K..(2021).QPOs and orbital elements of X-ray binary 4U 0115+63 during the 2017 outburst observed by Insight-HXMT.Monthly Notices of the Royal Astronomical Society,503,6045. |
| MLA | Ding, Y. Z.,et al."QPOs and orbital elements of X-ray binary 4U 0115+63 during the 2017 outburst observed by Insight-HXMT".Monthly Notices of the Royal Astronomical Society 503(2021):6045. |
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。