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Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat by Xiao, Guangcheng; Lu, Yu; Ma, Xiang; Ge, Mingyu; Yan, Linli; Li, Zijian; Tuo, Youli; Zhang, Yue; Zhang, Wei; Liu, Hexin; Zhou, Dengke; Zhang, Liang; Bu, Qingcui; Cao, Xuelei; Jiang, Weichun; Chen, Yupeng; Zhang, Shu; Chen, Li; Qu, Jinlu; Song, Liming; Zhang, Shuangnan is a scholarly article available to read on EtoBox.

What is Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat about?

We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5Hz) and Insight-HXMT (1-1.6Hz) are also reported in this work. The features of the QPOs are analysed with an energy range of 0.5-50keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This

Author

Xiao, Guangcheng; Lu, Yu; Ma, Xiang; Ge, Mingyu; Yan, Linli; Li, Zijian; Tuo, Youli; Zhang, Yue; Zhang, Wei; Liu, Hexin; Zhou, Dengke; Zhang, Liang; Bu, Qingcui; Cao, Xuelei; Jiang, Weichun; Chen, Yupeng; Zhang, Shu; Chen, Li; Qu, Jinlu; Song, Liming; Zhang, Shuangnan

Published

2019

Language

EN