エディントン光度を超える降着型コンパクト天体の系統的研究

超过爱丁顿光度的吸积致密天体的系统研究

• 批准号: 18F18318
• 负责人: 上田 佳宏
• 金额: $ 1.41万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-11-09 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18318/
• 关键词: 中性子星; 超臨界降着

During the last fiscal year, Dr. Hu participated in the NICER Magnetar and Magnetosphere group and contributed to several works, including the discovery of a new radio-emitting magnetar, Swift J1818.0-1627, which hints at an important link between magnetars and high-magnetic-field rotation-powered pulsar. Follow-up observations using radio telescopes are ongoing. As for the accreting compact objects, Drs. Hu and Ueda have discovered periodic dips in a pulsating ULX, M51 ULX-7. This unique property among pulsating ULXs implies a high inclination angle that disfavors the strong-beaming scenario. The result provides an important hint for magnetospheric accretion and suggests a high magnetic field of ULX-7. Moreover, a few interesting sources are discovered by the semi-automatic timing algorithm developed during Dr. Hu's JSPS tenure. They will be deeply investigated in the future.

在上一个财政年度，胡博士参加了NICER磁星和磁层小组，并为几项工作做出了贡献，包括发现了一颗新的无线电发射磁星Swift J1818.0-1627，这暗示了磁星和高磁场旋转动力脉冲星之间的重要联系。正在利用射电望远镜进行后续观测。至于吸积的致密天体，胡博士和上田发现了脉动ULX，M51 ULX-7的周期性下降。脉冲ULX的这种独特特性意味着高倾角不利于强波束方案。这一结果为磁层吸积提供了重要的线索，并表明ULX-7具有高磁场。此外，一些有趣的来源，发现了半自动定时算法在胡博士的JSPS任期内。今后将深入调查。

项目成果

On the Connection between Spin Period Evolution and Superorbital Period Excursion of SMC X-1

SMC X-1自旋周期演化与超轨道周期偏移的联系

• 发表时间: 2019
• 作者: Hu;C.-P. et al.
• 通讯作者: C.-P. et al.

Possible Periodic Dips in the Pulsating Ultraluminous X-Ray Source M51 ULX-7

• DOI: 10.3847/1538-4357/abd7a5
• 发表时间: 2021-02
• 期刊: The Astrophysical Journal
• 作者: Chin-Ping Hu;Y. Ueda;T. Enoto

Investigation of X-ray timing and spectral properties of ESO 243-49 HLX-1 with long-term Swift monitoring

通过长期 Swift 监测研究 ESO 243-49 HLX-1 的 X 射线定时和光谱特性

• DOI: 10.1093/mnras/stz3372
• 发表时间: 2019-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Lin Lupin Chun-Che;Hu Chin-Ping;Li Kwan-Lok;Takata Jumpei;Yen David Chien-Chang;Kwak Kyujin;Kim Young-Min;Kong Albert K. H.
• 通讯作者: Kong Albert K. H.