Possible modulated gamma-ray emission from the transitional millisecond pulsar binary PSR J1023+0038
文献类型：期刊论文
| 作者 | Xing, Yi1; Wang, Zhong-Xiang1; Takata, Jumpei2 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 18期号:10 |
| ISSN号 | 1674-4527 |
| 关键词 | Gamma Rays: Stars Binaries: Eclipsing Stars: Neutron |
| DOI | 10.1088/1674-4527/18/10/127 |
| 英文摘要 | We report the results from our analysis of Fermi Large Area Telescope (LAT) data for the transitional millisecond pulsar binary PSR J1023+0038. The time period of the data is nearly 9 yr, and that after the source's transition, in June 2013 from the disk-free state to the active state of having an accretion disk, is approximately 4 yr. We identify a high-energy >5.5 GeV component in the source's spectrum in the active state, and find this component is only significantly detected in half of the orbital phase centered at the descending node (when the pulsar is moving towards the Earth). Considering the pulsar scenario proposed for multi-frequency emission from the source, in which the pulsar is still active and a cold-relativistic pulsar wind inverse-Compton scatters the photons from the accretion disk, we discuss the origin of the high-energy component. In order to explain the observed spectrum, a power-law distribution of particles, with an index of similar to 3, in the pulsar wind is required. while the orbital variations are possibly due to changes in power-law index as a function of orbital phase. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:000446091900010 |
| 源URL | [http://119.78.226.72/handle/331011/32235]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Xing, Yi |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xing, Yi,Wang, Zhong-Xiang,Takata, Jumpei. Possible modulated gamma-ray emission from the transitional millisecond pulsar binary PSR J1023+0038[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(10). |
| APA | Xing, Yi,Wang, Zhong-Xiang,&Takata, Jumpei.(2018).Possible modulated gamma-ray emission from the transitional millisecond pulsar binary PSR J1023+0038.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(10). |
| MLA | Xing, Yi,et al."Possible modulated gamma-ray emission from the transitional millisecond pulsar binary PSR J1023+0038".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.10(2018). |
入库方式： OAI收割
来源：上海天文台
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