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Light-controlled pulsed x-ray tube with photocathode* 期刊论文  OAI收割
CHINESE PHYSICS B, 2021, 卷号: 30, 期号: 11
作者:  Xuan, Hao;  Liu, Yong-An;  Qiang, Peng-Fei;  Su, Tong;  Yang, Xiang-Hui
  |  收藏  |  浏览/下载：40/0  |  提交时间：2021/12/16
Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者:  HXMT
  |  收藏  |  浏览/下载：27/0  |  提交时间：2022/02/08
Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.  
An X-ray frequency modulation method and its application in X-ray communication 期刊论文  OAI收割
Optik, 2019, 卷号: 199
作者:  Su, Tong;  Tang, Liangyu;  Li, Yao;  Sheng, Lizhi;  Zhao, Baosheng
  |  收藏  |  浏览/下载：147/0  |  提交时间：2019/09/30
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.  
In-orbit Demonstration of X-Ray Pulsar Navigation with the Insight-HXMT Satellite 期刊论文  OAI收割
The Astrophysical Journal Supplement Series, 2019, 卷号: 244, 页码: 1
作者:  HXMT
  |  收藏  |  浏览/下载：15/0  |  提交时间：2022/02/08
pulsars: general  techniques: miscellaneous  Astrophysics -  Instrumentation and Methods for Astrophysics  Abstract: In this work, we report the in-orbit demonstration of X-ray pulsar navigation with Insight-Hard X-ray Modulation Telescope (Insight-HXMT) Satellite, which was launched on 2017 June 15. The new pulsar navigation method Significance Enhancement of Pulse-profile with Orbit-dynamics is adopted to determine the orbit with observations of only one pulsar. In this test, the Crab pulsar is chosen and observed by Insight-HXMT from 2017 August 31 to September 5. Using the five-day long observation data, the orbit of Insight-HXMT is determined successfully with the three telescopes onboard: High Energy X-ray Telescope, Medium Energy X-ray Telescope, and Low Energy X-ray Telescope, respectively. By combining all the data, the position and velocity of the Insight-HXMT are pinpointed to within 10 km (3ҩ and 10 m s-1 (3ҩ, respectively.  
Improving the detection efficiency and modulation transfer function of lens-coupled indirect X-ray imaging detectors based on point spread functions simulated according to lens performance parameters 期刊论文  OAI收割
JOURNAL OF SYNCHROTRON RADIATION, 2018, 卷号: 25, 页码: 1093-1105
作者:  Jiang XM(姜晓明);  Wang YP(王艳萍);  Li G(黎刚);  Zhang J(张杰);  Zhao Y(赵越)
  |  收藏  |  浏览/下载：23/0  |  提交时间：2019/09/24
Picosecond resolving detection method and experiment for ultrafast X-ray by modulation of an optical probe 期刊论文  OAI收割
acta physica sinica, 2015, 卷号: 64, 期号: 20
作者:  Wang Bo;  Bai Yong-Lin;  Cao Wei-Wei;  Xu Peng;  Liu Bai-Yu
收藏  |  浏览/下载：24/0  |  提交时间：2016/02/19
Grid-controlled emission source for space X-ray communication 期刊论文  OAI收割
acta physica sinica, 2014, 卷号: 63, 期号: 16
作者:  Ma Xiao-Fei;  Zhao Bao-Sheng;  Sheng Li-Zhi;  Liu Yong-An;  Liu Duo
收藏  |  浏览/下载：59/0  |  提交时间：2015/07/10
Status of the Hard X-ray Modulation Telescope Project 期刊论文  OAI收割
空间科学学报, 2014, 卷号: 34, 期号: 5, 页码: 544-546
作者:  Lu, Fangjun
  |  收藏  |  浏览/下载：25/0  |  提交时间：2019/07/11
Science with the Hard X-Ray Modulation Telescope 期刊论文  OAI收割
International Journal of Modern Physics D, 2013, 卷号: 22, 期号: 11, 页码: 1360005
作者:  Li, Tipei
  |  收藏  |  浏览/下载：40/0  |  提交时间：2019/07/11