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New pulse profile variability associated with a glitch of PSR J0738-4042 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 519, 期号: 1, 页码: 74-84
作者:  
Zhou, S. Q.;  Guegercinoglu, E.;  Yuan, J. P.;  Ge, M. Y.;  Yu, C.
  |  收藏  |  浏览/下载:14/0  |  提交时间:2023/06/19
A model to obtain timing solution with un-differenced observations suitable for single-station/multi-station, a case study of BDS data 期刊论文  OAI收割
ACTA GEODAETICA ET GEOPHYSICA, 2020, 页码: 15
作者:  
Zhang, Pengfei;  Tu, Rui;  Zhang, Rui;  Han, Junqiang;  Fan, Lihong
  |  收藏  |  浏览/下载:13/0  |  提交时间:2020/09/01
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat 期刊论文  OAI收割
Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40
作者:  
HXMT
  |  收藏  |  浏览/下载:57/0  |  提交时间:2022/02/08
Accretion  accretion disks  Black hole physics  X-rays: binaries:  Swift J1658.2-4242  Astrophysics - High Energy Astrophysical Phenomena  Abstract: 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 0.1-250 keV. 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 (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. 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 independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.