Fan-beamed X-Ray Emission from 1 to above 130 keV from the Ultraluminous X-Ray Pulsar RX J0209.6-7427 in the Small Magellanic Cloud
文献类型：期刊论文
| 作者 | Hou, X.; Ge, M. Y.; Ji, L. ; Zhang, S. N.; You, Y.; Tao, L.; Zhang, S.; Soria, R.; Feng, H.; Zhou, M.
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2022 |
| 卷号 | 938期号:2页码:149 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac8c93 |
| 文献子类 | Article |
| 英文摘要 | We present detailed timing and spectral analyses of the transient X-ray pulsar RX J0209.6-7427 in the Small Magellanic Cloud during its 2019 giant outburst. With a better known distance than most galactic X-ray pulsars, its peak luminosity is determined to be (1.11 +/- 0.06) x 10(39) erg s(-1); it is thus a bona fide pulsating ultraluminous X-ray source (PULX). Owing to the broad energy band of Insight-HXMT, its pulsed X-ray emission was detected from 1 keV up to the 130-180 keV band, which is the highest energy emission detected from any PULXs outside the Milky Way. This allows us to conclude that its main pulsed X-ray emission is from the fan beam of the accretion column, and its luminosity is thus intrinsic. We also estimate its magnetic field of (4.8-8.6) x 10(12) or (1.7-2.2) x 10(13) G, from its spin evolution or transition in the accretion column structure during the outburst; we suggest that the two values of the magnetic field strength correspond to the dipole and multipole magnetic fields of the neutron star, similar to the recent discovery in the Galactic PULX Swift J0243.6+6124. Therefore, the nature of the neutron star and its ULX emission can be understood within the current theoretical frame of accreting neutron stars. This may have implications for understanding the nature of those farther away extragalactic PULXs. |
| 电子版国际标准刊号 | 1538-4357 |
| 语种 | 英语 |
| WOS记录号 | WOS:000870859400001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299257]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_管理与技术支持 硬X射线调制望远镜卫星 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hou, X.,Ge, M. Y.,Ji, L.,et al. Fan-beamed X-Ray Emission from 1 to above 130 keV from the Ultraluminous X-Ray Pulsar RX J0209.6-7427 in the Small Magellanic Cloud[J]. ASTROPHYSICAL JOURNAL,2022,938(2):149. |
| APA | Hou, X..,Ge, M. Y..,Ji, L..,Zhang, S. N..,You, Y..,...&Wang, J. C..(2022).Fan-beamed X-Ray Emission from 1 to above 130 keV from the Ultraluminous X-Ray Pulsar RX J0209.6-7427 in the Small Magellanic Cloud.ASTROPHYSICAL JOURNAL,938(2),149. |
| MLA | Hou, X.,et al."Fan-beamed X-Ray Emission from 1 to above 130 keV from the Ultraluminous X-Ray Pulsar RX J0209.6-7427 in the Small Magellanic Cloud".ASTROPHYSICAL JOURNAL 938.2(2022):149. |
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来源：高能物理研究所
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