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1. Revisiting the dead time effects of Insight-HXMT/ME on timing analysis

Author: Tuo, Youli, Li, Xiaobo, Tan, Ying, Wu, Baiyang, Jiang, Weichun, Song, Liming, Qu, Jinlu, Gogate, Sudeep, Zhang, Shuang-Nan, and Santangelo, Andrea
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Dead time is a common instrumental effect of X-ray detectors which would alter the behavior of timing properties of astronomical signals, such as distorting the shape of power density spectra (PDS), affecting the root-mean-square of potential quasi-periodic oscillation signals, etc. We revisit the effects of the dead time of Medium Energy X-ray telescope (ME) onboard Insight-HXMT, based on the simulation of electronic read-out mechanism that causes the dead time, and the real data. We investigate dead time effects on the pulse profile as well as the Quasi-Periodic Oscillation (QPO) signals. The dead time coefficient suggests a linear correlation with the observed count rate in each phase bin of the pulse profile according to the simulation of periodic signal as well as the real data observed on Swift J0243.6+6124. The Fourier-amplitude-difference (FAD) method could well recover the intrinsic shape of the observed PDS in the case that the PDS is from two identical detectors. We apply this technique on ME, by splitting the 9 FPGA modules into 2 groups. The results indicate that the FAD technique suits the case when two groups of detectors are not largely different; and the recovered PDS of Sco X-1 observed by ME slightly enhances the significance of the previously known QPO signal, meanwhile the root-mean-square of QPO is significantly improved. We provide the FAD correction tool implemented in HXMTDAS for users in the future to better analyze QPO signals., Comment: 9 pages, 8 figures, accepted for publication in MNRAS main journal
Published: 2024

2. X-ray Polarimetry of the accreting pulsar 1A~0535+262 in the supercritical state with PolarLight

Author: Long, Xiangyun, Feng, Hua, Li, Hong, Kong, Ling-Da, Heyl, Jeremy, Ji, Long, Tao, Lian, Muleri, Fabio, Wu, Qiong, Zhu, Jiahuan, Huang, Jiahui, Minuti, Massimo, Jiang, Weichun, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgrò, Carmelo, Spandre, Gloria, Pinchera, Michele, Soffitta, Paolo, and Costa, Enrico
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: The X-ray pulsar 1A 0535+262 exhibited a giant outburst in 2020, offering us a unique opportunity for X-ray polarimetry of an accreting pulsar in the supercritical state. Measurement with PolarLight yielded a non-detection in 3-8 keV; the 99% upper limit of the polarization fraction (PF) is found to be 0.34 averaged over spin phases, or 0.51 based on the rotating vector model. No useful constraint can be placed with phase resolved polarimetry. These upper limits are lower than a previous theoretical prediction of 0.6-0.8, but consistent with those found in other accreting pulsars, like Her X-1, Cen X-3, 4U 1626-67, and GRO J1008-57, which were in the subcritical state, or at least not confidently in the supercritical state, during the polarization measurements. Our results suggest that the relatively low PF seen in accreting pulsars cannot be attributed to the source not being in the supercritical state, but could be a general feature., Comment: accepted for publication in ApJ
Published: 2023
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3. In-orbit Performance of ME onboard Insight-HXMT in the first 5 years

Author: Tan, Ying, Cao, Xuelei, Jiang, Weichun, Li, Xiaobo, Meng, Bin, Zhang, Wanchang, Yang, Sheng, Luo, Tao, Gu, Yudong, Sun, Liang, Liu, Xiaojing, Du, Yuanyuan, Yang, Jiawei, Xu, Yanjun, Liao, Jinyuan, Xu, Yupeng, Lu, Fangjun, Song, Liming, and Zhang, Shuangnan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Introduction: The Medium Energy X-ray telescope (ME) is a collimated X-ray telescope onboard the Insight hard X-ray modulation telescope (Insight-HXMT) satellite. It has 1728 Si-PIN pixels readout using 54 low noise application-specific integrated circuits (ASICs). ME covers the energy range of 5-30 keV and has a total detection area of 952 cm2. The typical energy resolution of ME at the beginning of the mission is 3 keV at 17.8 keV (Full Width at Half Maximum, FWHM) and the time resolution is 255 us. In this study, we present the in-orbit performance of ME in its first 5 years of operation. Methods: The performance of ME was monitored using onboard radioactive sources and astronomical X-ray objects. ME carries six 241Am radioactive sources for onboard calibration, which can continuously illuminate the calibration pixels. The long-term performance evolution of ME can be quantified using the properties of the accumulated spectra of the calibration pixels. In addition, observations of the Crab Nebula and the pulsar were used to check the long-term evolution of the detection efficiency as a function of energy. Conclusion: After 5 years of operation, 742 cm2 of the Si-PIN pixels were still working normally. The peak positions of 241Am emission lines gradually shifted to the high energy region, implying a slow increase in ME gain of 1.43%. A comparison of the ME spectra of the Crab Nebula and the pulsar shows that the E-C relations and the redistribution matrix file are still acceptable for most data analysis works, and there is no detectable variation in the detection efficiency.
Published: 2023

4. An Insight-HXMT view of the mHz quasi-regular modulation phenomenon in the black hole X-ray binary 4U 1630-47

Author: Yang, Zi-Xu, Zhang, Liang, Huang, Yue, Bu, Qingcui, Zhang, Zhen, Liu, He-Xin, Yu, Wei, Wang, Peng-Ju, Zhao, Q. C., Tao, L., Qu, Jin-Lu, Zhang, Shu, Zhang, Shuang-Nan, Song, Liming, Lu, Fangjun, Cao, Xuelei, Chen, Li, Cai, Ce, Chang, Zhi, Chen, Tianxian, Chen, Yong, Chen, Yupeng, Chen, Yibao, Cui, Weiwei, Ding, Guoqiang, Du, Yuanyuan, Gao, GuanHua, Gao, He, Ge, Mingyu, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Huo, Jia, Jia, Shumei, Jiang, Weichun, Jin, Jing, Kong, Lingda, Li, Bing, Li, Gang, Li, Wei, Li, Xian, Li, Xufang, Li, Zhengwei, Li, Chengkui, Lin, Lin, Liu, Congzhan, Li, Tipei, Li, Xiaobo, Liang, Xiaohua, Liao, Jinyuan, Liu, Hongwei, Liu, Xiaojing, Lu, Xuefeng, Luo, Qi, Luo, Tao, Ma, Binyuan, Ma, Ruican, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Ren, Xiaoqin, Sai, Na, Song, Xinying, Sun, Liang, Tan, Ying, Tuo, Youli, Wang, Chen, Wang, Wenshuai, Wang, Lingjun, Wang, Yusa, Wang, Jieshuang, Wen, Xiangyang, Wu, Bobing, Wu, Baiyang, Wu, Mei, Xiao, Shuo, Xu, Yupeng, Xiong, Shaolin, Yang, Sheng, Yang, Yanji, Yi, Qibin, Yin, Qianqing, You, Yuan, Zhang, Bing, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Wanchang, Zhang, Wei, Zhang, Binbin, Zhang, Peng, Zhang, Yifei, Zhang, Yuanhang, Zhao, Haisheng, Zhao, Xiaofan, Zheng, Shijie, and Zhou, Dengke
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Here we report the spectral-timing results of the black hole X-ray binary 4U 1630-47 during its 2021 outburst using observations from the Hard X-ray Modulation Telescope. Type-C quasi-periodic oscillations (QPOs) in 1.6--4.2 Hz and quasi-regular modulation (QRM) near 60 mHz are detected during the outburst. The mHz QRM has a fractional rms of 10%--16% in the 8--35 keV energy band with a Q factor (frequency/width) of 2--4. Benefiting from the broad energy band of hxmt, we study the energy dependence of the 60 mHz QRM in 1--100 keV for the first time. We find that the fractional rms of the mHz QRM increases with photon energy, while the time lags of the mHz QRM are soft and decrease with photon energy. Fast recurrence of the mHz QRM, in a timescale of less than one hour, has been observed during the outburst. During this period, the corresponding energy spectra moderately change when the source transitions from the QRM state to the non-QRM state. The QRM phenomena also shows a dependence with the accretion rate. We suggest that the QRM could be caused by an unknown accretion instability aroused from the corona.
Published: 2022
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5. Quasi-periodic oscillations of the X-ray burst from the magnetar SGR J1935+2154 and associated with the fast radio burst FRB 200428

Author: Li, Xiaobo, Ge, Mingyu, Lin, Lin, Zhang, Shuang-Nan, Song, Liming, Cao, Xuelei, Zhang, Bing, Lu, Fangjun, Xu, Yupeng, Xiong, Shaolin, Tuo, Youli, Tan, Ying, Jiang, Weichun, Qu, Jinlu, Zhang, Shu, Wang, Lingjun, Wang, Jieshuang, Zhang, Binbin, Zhang, Peng, Li, Chengkui, Liu, Congzhan, Li, Tipei, Bu, Qingcui, Cai, Ce, Chen, Yong, Chen, Yupeng, Chang, Zhi, Chen, Li, Chen, Tianxian, Chen, Yibao, Cui, Weiwei, Du, Yuanyuan, Gao, Guanhua, Gao, He, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Huang, Yue, Huo, Jia, Jia, Shumei, Jin, Jing, Kong, Lingda, Li, Bing, Li, Gang, Li, Wei, Li, Xian, Li, Xufang, Li, Zhengwei, Liang, Xiaohua, Liao, Jinyuan, Liu, Hexin, Liu, Hongwei, Liu, Xiaojing, Lu, Xuefeng, Luo, Qi, Luo, Tao, Ma, Binyuan, Ma, Ruican, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Ren, Xiaoqin, Sai, Na, Song, Xinying, Sun, Liang, Tao, Lian, Wang, Chen, Wang, Pengju, Wang, Wenshuai, Wang, Yusa, Wen, Xiangyang, Wu, Bobing, Wu, Baiyang, Wu, Mei, Xiao, Shuo, Yang, Sheng, Yang, Yanji, Yi, Qibin, Yin, Qianqing, You, Yuan, Yu, Wei, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Wanchang, Zhang, Wei, Zhang, Yifei, Zhang, Yuanhang, Zhao, Haisheng, Zhao, Xiaofan, Zheng, Shijie, and Zhou, Dengke
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: The origin(s) and mechanism(s) of fast radio bursts (FRBs), which are short radio pulses from cosmological distances, have remained a major puzzle since their discovery. We report a strong Quasi-Periodic Oscillation(QPO) of 40 Hz in the X-ray burst from the magnetar SGR J1935+2154 and associated with FRB 200428, significantly detected with the Hard X-ray Modulation Telescope (Insight-HXMT) and also hinted by the Konus-Wind data. QPOs from magnetar bursts have only been rarely detected; our 3.4 sigma (p-value is 2.9e-4) detection of the QPO reported here reveals the strongest QPO signal observed from magnetars (except in some very rare giant flares), making this X-ray burst unique among magnetar bursts. The two X-ray spikes coinciding with the two FRB pulses are also among the peaks of the QPO. Our results suggest that at least some FRBs are related to strong oscillation processes of neutron stars. We also show that we may overestimate the significance of the QPO signal and underestimate the errors of QPO parameters if QPO exists only in a fraction of the time series of a X-ray burst which we use to calculate the Leahy-normalized periodogram., Comment: 17 pages, 13 figures, accepted for publication by ApJ. arXiv admin note: text overlap with arXiv:1212.1011 by other authors. text overlap with arXiv:1212.1011 by other authors
Published: 2022
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6. A significant detection of X-ray Polarization in Sco X-1 with PolarLight and constraints on the corona geometry

Author: Long, Xiangyun, Feng, Hua, Li, Hong, Zhu, Jiahuan, Wu, Qiong, Huang, Jiahui, Minuti, Massimo, Jiang, Weichun, Yang, Dongxin, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Jiang, Jiachen, Costa, Enrico, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, and Soffitta, Paolo
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report the detection of X-ray polarization in the neutron star low mass X-ray binary Scorpius (Sco) X-1 with PolarLight. The result is energy dependent, with a non-detection in 3-4 keV but a 4$\sigma$ detection in 4-8 keV; it is also flux dependent in the 4-8 keV band, with a non-detection when the source displays low fluxes but a 5$\sigma$ detection during high fluxes, in which case we obtain a polarization fraction of $0.043 \pm 0.008$ and a polarization angle of $52.6^\circ \pm 5.4^\circ$. This confirms a previous marginal detection with OSO-8 in the 1970s, and marks Sco X-1 the second astrophysical source with a significant polarization measurement in the keV band. The measured polarization angle is in line with the jet orientation of the source on the sky plane ($54^\circ$), which is supposedly the symmetric axis of the system. Combining previous spectral analysis, our measurements suggest that an optically thin corona is located in the transition layer under the highest accretion rates, and disfavor the extended accretion disk corona model., Comment: Submitted to AAS journals. We are grateful to some experts for useful comments
Published: 2021
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7. In-orbit timing calibration of the Insight-Hard X-ray Modulation Telescope

Author: Tuo, Youli, Li, Xiaobo, Ge, Mingyu, Nie, Jianyin, Song, Liming, Xu, Yupeng, Zheng, Shijie, Lu, Fangjun, Zhang, Shuang-Nan, Liu, Congzhan, Cao, Xuelei, Chen, Yong, Qu, Jinlu, Zhang, Shu, Zhao, Haisheng, Xiao, Shuo, Wu, Baiyang, Wen, Xiangyang, Jiang, Weichun, Meng, Bin, Cui, Weiwei, Li, Wei, Zhang, Yifei, Li, Xufang, Yang, Yanji, Tan, Ying, and Li, Bing
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: We describe the timing system and the timing calibration results of the three payloads on-board the Insight-Hard X-ray Modulation Telescope (Insight-HXMT). These three payloads are the High Energy X-ray telescope (HE, 20-250 keV), the Medium Energy X-ray telescope (ME, 5-30 keV) and the low Energy X-ray telescope (LE, 1-10 keV). We present a method to correct the temperature-dependent period response and the long-term variation of the on-board crystal oscillator, especially for ME that does not carry a temperature-compensated crystal oscillator. The time of arrivals (ToAs) of the Crab pulsar are measured to evaluate the accuracy of the timing system. As the ephemeris of the Crab pulsar given by Jodrell Bank observatory has systematic errors around 40 {\mu}s (Rots et al. 2014), we use the quasi-simultaneous observations of the X-ray Timing Instrument (XTI) on-board the Neutron star Interior Composition Explorer (NICER) to produce the Crab ephemerides and to verify the timing system of Insight-HXMT. The energy-dependent ToAs' offsets relative to the NICER measurements including physical and instrumental origins are about 24.7{\mu}s, 10.1{\mu}s and 864.7{\mu}s, and the systematic errors of the timing system are determined as 12.1{\mu}s, 8.6{\mu}s, and 15.8{\mu}s, for HE, ME and LE respectively., Comment: 29 pages, 14 figures, accepted for publication in ApJS
Published: 2021
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8. Studies of the linearity of the readout module assembling using the eXTP-GPD chips

Author: Jiang, Jiechen, Sun, Liang, Jiao, Yang, Jiang, Weichun, Xu, Yupeng, He, Huilin, Liu, Xiaohua, Du, Yuanyuan, Yang, Sheng, Dong, Zefang, Liu, Xiaojing, and Dai, Boyu
Published: 2023
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9. X-ray polarimetry of the Crab nebula with PolarLight: polarization recovery after the glitch and a secular position angle variation

Author: Long, Xiangyun, Feng, Hua, Li, Hong, Zhu, Jiahuan, Wu, Qiong, Huang, Jiahui, Minuti, Massimo, Jiang, Weichun, Wang, Weihua, Xu, Renxin, Costa, Enrico, Yang, Dongxin, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, and Soffitta, Paolo
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: We report follow-up observations of the Crab nebula with the PolarLight X-ray polarimeter, which revealed a possible variation in polarization associated with a pulsar glitch in 2019. The new observations confirm that the polarization has recovered roughly 100 days after the glitch. With the new observations, we find that the polarization angle (PA) measured with PolarLight from the total nebular emission has a difference of 18.0 +- 4.6 (deg) from that measured 42 years ago with OSO-8, indicating a secular evolution of polarization with either the Crab nebula or pulsar. The long-term variation in PA could be a result of multiple glitches in the history, magnetic reconnection or movement of synchrotron emitting structures in the nebula, or secular evolution of the pulsar magnetic geometry., Comment: ApJ Letters to appear
Published: 2021
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10. Discrimination of background events in the PolarLight X-ray polarimeter

Author: Zhu, Jiahuan, Li, Hong, Feng, Hua, Huang, Jiahui, Long, Xiangyun, Wu, Qiong, Jiang, Weichun, Minuti, Massimo, Citraro, Saverio, Nasimi, Hikmat, Yang, Dongxin, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, Soffitta, Paolo, and Costa, Enrico
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: PolarLight is a space-borne X-ray polarimeter that measures the X-ray polarization via electron tracking in an ionization chamber. It is a collimated instrument and thus suffers from the background on the whole detector plane. The majority of background events are induced by high energy charged particles and show ionization morphologies distinct from those produced by X-rays of interest. Comparing on-source and off-source observations, we find that the two datasets display different distributions on image properties. The boundaries between the source and background distributions are obtained and can be used for background discrimination. Such a means can remove over 70% of the background events measured with PolarLight. This approaches the theoretical upper limit of the background fraction that is removable and justifies its effectiveness. For observations with the Crab nebula, the background contamination decreases from 25% to 8% after discrimination, indicative of a polarimetric sensitivity of around 0.2 Crab for PolarLight. This work also provides insights into future X-ray polarimetric telescopes., Comment: accepted for publication in Research in Astronomy and Astrophysics
Published: 2021
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11. Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070

Author: You, Bei, Tuo, Yuoli, Li, Chengzhe, Wang, Wei, Zhang, Shuang-Nan, Zhang, Shu, Ge, Mingyu, Luo, Chong, Liu, Bifang, Yuan, Weimin, Dai, Zigao, Liu, Jifeng, Qiao, Erlin, Jin, Chichuan, Liu, Zhu, Czerny, Bozena, Wu, Qingwen, Bu, Qingcui, Cai, Ce, Cao, Xuelei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tianxiang, Chen, Yibao, Chen, Yong, Chen, Yupeng, Cui, Wei, Cui, Weiwei, Deng, Jingkang, Dong, Yongwei, Du, Yuanyuan, Fu, Minxue, Gao, Guanhua, Gao, He, Gao, Min, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Huang, Yue, Huo, Jia, Jia, Shumei, Jiang, Luhua, Jiang, Weichun, Jin, Jing, Jin, Yongjie, Kong, Lingda, Li, Bing, Li, Chengkui, Li, Gang, Li, Maoshun, Li, Tipei, Li, Wei, Li, Xian, Li, Xiaobo, Li, Xufang, Li, Yanguo, Li, Zhengwei, Liang, Xiaohua, Liao, Jinyuan, Liu, Congzhan, Liu, Guoqing, Liu, Hongwei, Liu, Xiaojing, Liu, Yinong, Lu, Bo, Lu, Fangjun, Lu, Xuefeng, Luo, Qi, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Qu, Jinlu, Sai, Na, Shang, Rencheng, Song, Liming, Song, Xinying, Sun, Liang, Tan, Ying, Tao, Lian, Wang, Chen, Wang, Guofeng, Wang, Juan, Wang, Lingjun, Wang, Wenshuai, Wang, Yusa, Wen, Xiangyang, Wu, Baiyang, Wu, Bobing, Wu, Mei, Xiao, Guangcheng, Xiao, Shuo, Xiong, Shaolin, Xu, Yupeng, Yang, Jiawei, Yang, Sheng, Yang, Yanji, Yi, Qibin, Yin, Qianqing, You, Yuan, Zhang, Aimei, Zhang, Chengmo, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Tong, Zhang, Wanchang, Zhang, Wei, Zhang, Wenzhao, Zhang, Yi, Zhang, Yifei, Zhang, Yongjie, Zhang, Yue, Zhang, Zhao, Zhang, Ziliang, Zhao, Haisheng, Zhao, Xiaofan, Zheng, Shijie, Zhou, Dengke, Zhou, Jianfeng, Zhu, Yuxuan, and Zhu, Yue
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies
Abstract: A black hole X-ray binary produces hard X-ray radiation from its corona and disk when the accreting matter heats up. During an outburst, the disk and corona co-evolves with each other. However, such an evolution is still unclear in both its geometry and dynamics. Here we report the unusual decrease of the reflection fraction in MAXI J1820+070, which is the ratio of the coronal intensity illuminating the disk to the coronal intensity reaching the observer, as the corona is observed to contrast during the decay phase. We postulate a jet-like corona model, in which the corona can be understood as a standing shock where the material flowing through. In this dynamical scenario, the decrease of the reflection fraction is a signature of the corona's bulk velocity. Our findings suggest that as the corona is observed to get closer to the black hole, the coronal material might be outflowing faster., Comment: 11 pages, 5 figures; published in Nature Communications; An artist's impression of Figure 5 is updated here, and the animation is available at http://youbei.work/research/
Published: 2021
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12. Modeling the in-orbit background of PolarLight

Author: Huang, Jiahui, Feng, Hua, Li, Hong, Long, Xiangyun, Yang, Dongxin, Zeng, Weihe, Wu, Qiong, Jiang, Weichun, Minuti, Massimo, Costa, Enrico, Muleri, Fabio, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Zhi, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, Pinchera, Michele, and Soffitta, Paolo
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: PolarLight is a gas pixel X-ray polarimeter mounted on a CubeSat, which was launched into a Sun-synchronous orbit in October 2018. We build a mass model of the whole CubeSat with the Geant4 toolkit to simulate the background induced by the cosmic X-ray background (CXB) and high energy charged particles in the orbit. The simulated energy spectra and morphologies of event images both suggest that the measured background with PolarLight is dominated by high energy electrons, with a minor contribution from protons and the CXB. The simulation reveals that, in the energy range of 2-8 keV, there are roughly 28% of the background events are caused by energy deposit from a secondary electron with an energy of a few keV, in a physical process identical to the detection of X-rays. Thus, this fraction of background cannot be discriminated from X-ray events. The background distribution is uneven on the detector plane, with an enhancement near the edges. The edge effect is because high energy electrons tend to produce long tracks, which are discarded by the readout electronics unless they have partial energy deposits near the edges. The internal background rate is expected to be around 6 x 10^-3 counts/s/cm2 in 2-8 keV if an effective particle discrimination algorithm can be applied. This indicates that the internal background should be negligible for future focusing X-ray polarimeters with a focal size in the order of mm., Comment: accepted for publication in ApJ
Published: 2021
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13. Re-detection and a Possible Time Variation of Soft X-ray Polarisation from the Crab

Author: Feng, Hua, Li, Hong, Long, Xiangyun, Bellazzini, Ronaldo, Costa, Enrico, Wu, Qiong, Huang, Jiahui, Jiang, Weichun, Minuti, Massimo, Wang, Weihua, Xu, Renxin, Yang, Dongxin, Baldini, Luca, Citraro, Saverio, Nasimi, Hikmat, Soffitta, Paolo, Muleri, Fabio, Jung, Aera, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, and Pinchera, Michele
Subjects: Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Crab nebula is so far the only celestial object with a statistically significant detection in soft x-ray polarimetry, a window that has not been explored in astronomy since the 1970s. However, soft x-ray polarimetry is expected to be a sensitive probe of magnetic fields in high energy astrophysical objects including rotation-powered pulsars and pulsar wind nebulae. Here we report the re-detection of soft x-ray polarisation after 40 years from the Crab nebula and pulsar with PolarLight, a miniature polarimeter utilising a novel technique onboard a CubeSat. The polarisation fraction of the Crab in the on-pulse phases was observed to decrease after a glitch of the Crab pulsar on July 23, 2019, while that of the pure nebular emission remained constant within uncertainty. The phenomenon may have lasted about 100 days. If the association between the glitch and polarisation change can be confirmed with future observations, it will place strong constraints on the physical mechanism of the high energy emission and glitch of pulsars., Comment: Authors' version of an article published in Nature Astronomy on 11 May 2020. Link to the paper: https://www.nature.com/articles/s41550-020-1088-1
Published: 2020
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14. In-orbit Operation and Performance of the CubeSat Soft X-ray Polarimeter PolarLight

Author: Li, Hong, Long, Xiangyun, Feng, Hua, Wu, Qiong, Huang, Jiahui, Jiang, Weichun, Minuti, Massimo, Yang, Dongxin, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgro, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, Soffitta, Paolo, and Costa, Enrico
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: PolarLight is a compact soft X-ray polarimeter onboard a CubeSat, which was launched into a low-Earth orbit on October 29, 2018. In March 2019, PolarLight started full operation, and since then, regular observations with the Crab nebula, Sco X-1, and background regions have been conducted. Here we report the operation, calibration, and performance of PolarLight in the orbit. Based on these, we discuss how one can run a low-cost, shared CubeSat for space astronomy, and how CubeSats can play a role in modern space astronomy for technical demonstration, science observations, and student training., Comment: accepted for publication in Advances in Space Research
Published: 2020
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15. Overview to the Hard X-ray Modulation Telescope (Insight-HXMT) Satellite

Author: Zhang, ShuangNan, Li, TiPei, Lu, FangJun, Song, LiMing, Xu, YuPeng, Liu, CongZhan, Chen, Yong, Cao, XueLei, Bu, QingCui, Cai, Ce, Chang, Zhi, Chen, Gang, Chen, Li, Chen, TianXiang, Chen, Wei, Chen, YiBao, Chen, YuPeng, Cui, Wei, Cui, WeiWei, Deng, JingKang, Dong, YongWei, Du, YuanYuan, Fu, MinXue, Gao, GuanHua, Gao, He, Gao, Min, Ge, MingYu, Gu, YuDong, Guan, Ju, Gungor, Can, Guo, ChengCheng, Han, DaWei, Hu, Wei, Huang, Yan, Huang, Yue, Huo, Jia, Jia, ShuMei, Jiang, LuHua, Jiang, WeiChun, Jin, Jing, Jin, YongJie, Kong, Lingda, Li, Bing, Li, ChengKui, Li, Gang, Li, MaoShun, Li, Wei, Li, Xian, Li, XiaoBo, Li, XuFang, Li, YanGuo, Li, ZiJian, Li, ZhengWei, Liang, XiaoHua, Liao, JinYuan, Liu, Baisheng, Liu, GuoQing, Liu, HongWei, Liu, ShaoZhen, Liu, XiaoJing, Liu, Yuan, Liu, YiNong, Lu, Bo, Lu, XueFeng, Luo, Qi, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, JianYin, Ou, Ge, Qu, JinLu, Sai, Na, Shang, RenCheng, Shen, GuoHong, Song, XinYing, Sun, Liang, Tan, Ying, Tao, Lian, Tao, WenHui, Tuo, YouLi, Wang, ChunQin, Wang, GuoFeng, Wang, HuanYu, Wang, Juan, Wang, WenShuai, Wang, YuSa, Wen, XiangYang, Wu, BoBing, Wu, Mei, Xiao, GuangCheng, Xiao, Shuo, Xiong, ShaoLin, Xu, He, Yan, LinLi, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Yi, Qibin, Yu, JiaXi, Yuan, Bin, Zhang, AiMei, Zhang, ChunLei, Zhang, ChengMo, Zhang, Fan, Zhang, HongMei, Zhang, Juan, Zhang, Liang, Zhang, Qiang, Zhang, ShenYi, Zhang, Shu, Zhang, Tong, Zhang, Wei, Zhang, WanChang, Zhang, WenZhao, Zhang, Yi, Zhang, Yue, Zhang, YiFei, Zhang, YongJie, Zhang, Zhao, Zhang, Zhi, Zhang, ZiLiang, Zhao, HaiSheng, Zhao, JianLing, Zhao, XiaoFan, Zheng, ShiJie, Zhu, Yue, Zhu, YuXuan, Zhuang, Renlin, and Zou, ChangLin
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: As China's first X-ray astronomical satellite, the Hard X-ray Modulation Telescope (HXMT), which was dubbed as Insight-HXMT after the launch on June 15, 2017, is a wide-band (1-250 keV) slat-collimator-based X-ray astronomy satellite with the capability of all-sky monitoring in 0.2-3 MeV. It was designed to perform pointing, scanning and gamma-ray burst (GRB) observations and, based on the Direct Demodulation Method (DDM), the image of the scanned sky region can be reconstructed. Here we give an overview of the mission and its progresses, including payload, core sciences, ground calibration/facility, ground segment, data archive, software, in-orbit performance, calibration, background model, observations and some preliminary results., Comment: 29 pages, 40 figures, 6 tables, to appear in Sci. China-Phys. Mech. Astron. arXiv admin note: text overlap with arXiv:1910.04434
Published: 2019
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16. The Medium Energy (ME) X-ray telescope onboard the Insight-HXMT astronomy satellite

Author: Cao, Xuelei, Jiang, Weichun, Meng, Bin, Zhang, Wanchang, Luo, Tao, Yang, Sheng, Zhang, Chunlei, Gu, Yudong, Sun, Liang, Liu, Xiaojing, Yang, Jiawei, Li, Xian, Tan, Ying, Liu, Shaozhen, Du, Yuanyuan, Lu, Fangjun, Xu, Yupeng, Zhang, Shuangnan, Wang, Huanyu, Li, Tipei, Zhang, Chengmo, Wen, Xiangyang, Ge, Mingyu, Zhou, Yupeng, Xiong, Shaolin, Zhang, Shu, Zhang, Yongjie, Cheng, Zehao, Zhang, Fei, Li, Maoshun, Liang, Xiaohua, Gao, Min, Yang, Enbo, Liu, Xiaohang, Liu, Hongwei, Yang, Yirong, and Zhang, Fan
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: The Medium Energy X-ray telescope (ME) is one of the three main telescopes on board the Insight Hard X-ray Modulation Telescope (Insight-HXMT) astronomy satellite. ME contains 1728 pixels of Si-PIN detectors sensitive in 5-30 keV with a total geometrical area of 952 cm2. Application Specific Integrated Circuit (ASIC) chips, VA32TA6, is used to achieve low power consumption and low readout noise. The collimators define three kinds of field of views (FOVs) for the telescope, 1{\deg}{\times}4{\deg}, 4{\deg}{\times}4{\deg}, and blocked ones. Combination of such FOVs can be used to estimate the in-orbit X-ray and particle background components. The energy resolution of ME is ~3 keV at 17.8 keV (FWHM) and the time resolution is 255 {\mu}s. In this paper, we introduce the design and performance of ME., Comment: 18 pages with 36 figures
Published: 2019
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17. Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat

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, and Zhang, Shuangnan
Subjects: 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 0.1-250keV. 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 independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152., Comment: 27 pages, 10 figures, Accepted by JHEAp
Published: 2019

18. Insight-HXMT observations of Swift J0243.6+6124 during its 2017-2018 outburst

Author: Zhang, Yue, Ge, Mingyu, Song, Liming, Zhang, Shuangnan, Qu, Jinlu, Zhang, Shu, Doroshenko, Victor, Tao, Lian, Ji, Long, Güngör, Can, Santangelo, Andrea, Shi, Changsheng, Chang, Zhi, Chen, Gang, Chen, Li, Chen, Tianxiang, Chen, Yong, Chen, Yibao, Cui, Wei, Cui, Weiwei, Deng, Jingkang, Dong, Yongwei, Du, Yuanyuan, Fu, Minxue, Gao, Guanhua, Gao, He, Gao, Min, Gu, Yudong, Guan, Ju, Guo, Chengcheng, Han, Dawei, Hu, Wei, Huang, Yue, Huo, Jia, Jia, Shumei, Jiang, Luhua, Jiang, Weichun, Jin, Jing, Jin, Yongjie, Li, Bing, Li, Chengkui, Li, Gang, Li, Maoshun, Li, Wei, Li, Xian, Li, Xiaobo, Li, Xufang, Li, Yanguo, Li, Zijian, Li, Zhengwei, Liang, Xiaohua, Liao, Jinyuan, Liu, Congzhan, Liu, Guoqing, Liu, Hongwei, Liu, Shaozhen, Liu, Xiaojing, Liu, Yuan, Liu, Yinong, Lu, Bo, Lu, Xuefeng, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, Jianyin, Ou, Ge, Sai, Na, Sun, Liang, Tan, Ying, Tao, Wenhui, Tuo, Youli, Wang, Guofeng, Wang, Huanyu, Wang, Juan, Wang, Wenshuai, Wang, Yusa, Wen, Xiangyang, Wu, Bobing, Wu, Mei, Xiao, Guangcheng, Xiong, Shaolin, Xu, He, Xu, Yupeng, Yan, Linli, Yang, Jiawei, Yang, Sheng, Yang, Yanji, Zhang, Aimei, Zhang, Chunlei, Zhang, Chengmo, Zhang, Fan, Zhang, Hongmei, Zhang, Juan, Zhang, Tong, Zhang, Wei, Zhang, Wanchang, Zhang, Wenzhao, Zhang, Yi, Zhang, Yifei, Zhang, Yongjie, Zhang, Zhao, Zhang, Ziliang, Zhao, Haisheng, Zhao, Jianling, Zhao, Xiaofan, Zheng, Shijie, Zhu, Yue, Zhu, Yuxuan, and Zou, Changlin
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: The recently discovered neutron star transient Swift J0243.6+6124 has been monitored by {\it the Hard X-ray Modulation Telescope} ({\it Insight-\rm HXMT). Based on the obtained data, we investigate the broadband spectrum of the source throughout the outburst. We estimate the broadband flux of the source and search for possible cyclotron line in the broadband spectrum. No evidence of line-like features is, however, found up to $\rm 150~keV$. In the absence of any cyclotron line in its energy spectrum, we estimate the magnetic field of the source based on the observed spin evolution of the neutron star by applying two accretion torque models. In both cases, we get consistent results with $B\rm \sim 10^{13}~G$, $D\rm \sim 6~kpc$ and peak luminosity of $\rm >10^{39}~erg~s^{-1}$ which makes the source the first Galactic ultraluminous X-ray source hosting a neutron star., Comment: published
Published: 2019
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19. PolarLight: a CubeSat X-ray Polarimeter based on the Gas Pixel Detector

Author: Feng, Hua, Jiang, Weichun, Minuti, Massimo, Wu, Qiong, Jung, Aera, Yang, Dongxin, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Huang, Jiahui, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgrò, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, Soffitta, Paolo, and Costa, Enrico
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: The gas pixel detector (GPD) is designed and developed for high-sensitivity astronomical X-ray polarimetry, which is a new window about to open in a few years. Due to the small mass, low power, and compact geometry of the GPD, we propose a CubeSat mission Polarimeter Light (PolarLight) to demonstrate and test the technology directly in space. There is no optics but a collimator to constrain the field of view to 2.3 degrees. Filled with pure dimethyl ether (DME) at 0.8 atm and sealed by a beryllium window of 100 micron thick, with a sensitive area of about 1.4 mm by 1.4 mm, PolarLight allows us to observe the brightest X-ray sources on the sky, with a count rate of, e.g., ~0.2 counts/s from the Crab nebula. The PolarLight is 1U in size and mounted in a 6U CubeSat, which was launched into a low Earth Sun-synchronous orbit on October 29, 2018, and is currently under test. More launches with improved designs are planned in 2019. These tests will help increase the technology readiness for future missions such as the enhanced X-ray Timing and Polarimetry (eXTP), better understand the orbital background, and may help constrain the physics with observations of the brightest objects., Comment: Accepted for publication in Experimental Astronomy
Published: 2019
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20. The enhanced X-ray Timing and Polarimetry mission - eXTP

Author: Zhang, ShuangNan, Santangelo, Andrea, Feroci, Marco, Xu, YuPeng, Lu, FangJun, Chen, Yong, Feng, Hua, Zhang, Shu, Brandt, Søren, Hernanz, Margarita, Baldini, Luca, Bozzo, Enrico, Campana, Riccardo, De Rosa, Alessandra, Dong, YongWei, Evangelista, Yuri, Karas, Vladimir, Meidinger, Norbert, Meuris, Aline, Nandra, Kirpal, Pan, Teng, Pareschi, Giovanni, Orleanski, Piotr, Huang, QiuShi, Schanne, Stephane, Sironi, Giorgia, Spiga, Daniele, Svoboda, Jiri, Tagliaferri, Gianpiero, Tenzer, Christoph, Vacchi, Andrea, Zane, Silvia, Walton, Dave, Wang, ZhanShan, Winter, Berend, Wu, Xin, Zand, Jean J. M. in 't, Ahangarianabhari, Mahdi, Ambrosi, Giovanni, Ambrosino, Filippo, Barbera, Marco, Basso, Stefano, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Borghi, Giacomo, Cao, XueLei, Cadoux, Franck, Ceraudo, Francesco, Chen, TianXiang, Chen, YuPeng, Chevenez, Jerome, Civitani, Marta, Cui, Wei, Cui, WeiWei, Dauser, Thomas, Del Monte, Ettore, Di Cosimo, Sergio, Diebold, Sebastian, Doroshenko, Victor, Dovciak, Michal, Du, YuanYuan, Ducci, Lorenzo, Fan, QingMei, Favre, Yannick, Fuschino, Fabio, Gálvez, José Luis, Gao, Min, Ge, MingYu, Gevin, Olivier, Grassi, Marco, Gu, QuanYing, Gu, YuDong, Han, DaWei, Hong, Bin, Hu, Wei, Ji, Long, Jia, ShuMei, Jiang, WeiChun, Kennedy, Thomas, Kreykenbohm, Ingo, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Li, Gang, Li, MaoShun, Li, Xian, Li, Wei, Li, ZhengWei, Limousin, Olivier, Liu, HongWei, Liu, XiaoJing, Lu, Bo, Luo, Tao, Macera, Daniele, Malcovati, Piero, Martindale, Adrian, Michalska, Malgorzata, Meng, Bin, Minuti, Massimo, Morbidini, Alfredo, Muleri, Fabio, Paltani, Stephane, Perinati, Emanuele, Picciotto, Antonino, Piemonte, Claudio, Qu, JinLu, Rachevski, Alexandre, Rashevskaya, Irina, Rodriguez, Jerome, Schanz, Thomas, Shen, ZhengXiang, Sheng, LiZhi, Song, JiangBo, Song, LiMing, Sgro, Carmelo, Sun, Liang, Tan, Ying, Uttley, Phil, Wang, Juan, Wang, LangPing, Wang, YuSa, Watts, Anna L., Wen, XiangYang, Wilms, Jörn, Xiong, ShaoLin, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Yu, Nian, Zhang, WenDa, Zampa, Gianluigi, Zampa, Nicola, Zdziarski, Andrzej A., Zhang, AiMei, Zhang, ChengMo, Zhang, Fan, Zhang, Long, Zhang, Tong, Zhang, Yi, Zhang, XiaoLi, Zhang, ZiLiang, Zhao, BaoSheng, Zheng, ShiJie, Zhou, YuPeng, Zorzi, Nicola, and Zwart, J. Frans
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In this paper we present the enhanced X-ray Timing and Polarimetry mission - eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources. The paper provides a detailed description of: (1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload; (2) the elements and functions of the mission, from the spacecraft to the ground segment., Comment: Accepted for publication on Sci. China Phys. Mech. Astron. (2019)
Published: 2018
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21. Insight-HXMT observations of the first binary neutron star merger GW170817

Author: Li, TiPei, Xiong, ShaoLin, Zhang, ShuangNan, Lu, FangJun, Song, LiMing, Cao, XueLei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, TianXiang, Chen, Yong, Chen, YiBao, Chen, YuPeng, Cui, Wei, Cui, WeiWei, Deng, JingKang, Dong, YongWei, Du, YuanYuan, Fu, MinXue, Gao, GuanHua, Gao, He, Gao, Min, Ge, MingYu, Gu, YuDong, Guan, Ju, Guo, ChengCheng, Han, DaWei, Hu, Wei, Huang, Yue, Huo, Jia, Jia, ShuMei, Jiang, LuHua, Jiang, WeiChun, Jin, Jing, Jin, YongJie, Li, Bing, Li, ChengKui, Li, Gang, Li, MaoShun, Li, Wei, Li, Xian, Li, XiaoBo, Li, XuFang, Li, YanGuo, Li, ZiJian, Li, ZhengWei, Liang, XiaoHua, Liao, JinYuan, Liu, CongZhan, Liu, GuoQing, Liu, HongWei, Liu, ShaoZhen, Liu, XiaoJing, Liu, Yuan, Liu, YiNong, Lu, Bo, Lu, XueFeng, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, JianYin, Ou, Ge, Qu, JinLu, Sai, Na, Sun, Liang, Tan, Yin, Tao, Lian, Tao, WenHui, Tuo, YouLi, Wang, GuoFeng, Wang, HuanYu, Wang, Juan, Wang, WenShuai, Wang, YuSa, Wen, XiangYang, Wu, BoBing, Wu, Mei, Xiao, GuangCheng, Xu, He, Xu, YuPeng, Yan, LinLi, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Zhang, AiMei, Zhang, ChunLei, Zhang, ChengMo, Zhang, Fan, Zhang, HongMei, Zhang, Juan, Zhang, Qiang, Zhang, Shu, Zhang, Tong, Zhang, Wei, Zhang, WanChang, Zhang, WenZhao, Zhang, Yi, Zhang, Yue, Zhang, YiFei, Zhang, YongJie, Zhang, Zhao, Zhang, ZiLiang, Zhao, HaiSheng, Zhao, JianLing, Zhao, XiaoFan, Zheng, ShiJie, Zhu, Yue, Zhu, YuXuan, and Zou, ChangLin
Subjects: Astrophysics - High Energy Astrophysical Phenomena
Abstract: Finding the electromagnetic (EM) counterpart of binary compact star merger, especially the binary neutron star (BNS) merger, is critically important for gravitational wave (GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017, Advanced LIGO and \textit{Fermi}/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart, GRB 170817A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope (HE) onboard \textit{Insight}-HXMT (Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart (SSS17a/AT2017gfo) with very large collection area ($\sim$1000 cm$^2$) and microsecond time resolution in 0.2-5 MeV. In addition, \textit{Insight}-HXMT quickly implemented a Target of Opportunity (ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although it did not detect any significant high energy (0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817A. Meanwhile, \textit{Insight}-HXMT/HE provides one of the most stringent constraints (~10$^{-7}$ to 10$^{-6}$ erg/cm$^2$/s) for both GRB170817A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of \textit{Insight}-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event., Comment: accepted by Science China - Physics, Mechanics & Astronomy. Planned to publish on Oct 17, but postponed due to a problem on pdf file
Published: 2017
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22. In-orbit operation and performance of the CubeSat Soft X-ray polarimeter PolarLight

Author: Li, Hong, Long, Xiangyun, Feng, Hua, Wu, Qiong, Huang, Jiahui, Jiang, Weichun, Minuti, Massimo, Yang, Dongxin, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, Baldini, Luca, Bellazzini, Ronaldo, Brez, Alessandro, Latronico, Luca, Sgrò, Carmelo, Spandre, Gloria, Pinchera, Michele, Muleri, Fabio, Soffitta, Paolo, and Costa, Enrico
Published: 2021
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23. Overview to the Hard X-ray Modulation Telescope (Insight-HXMT) Satellite

Author: Zhang, Shuang-Nan, Li, TiPei, Lu, FangJun, Song, LiMing, Xu, YuPeng, Liu, CongZhan, Chen, Yong, Cao, XueLei, Bu, QingCui, Chang, Zhi, Chen, Gang, Chen, Li, Chen, TianXiang, Chen, YiBao, Chen, YuPeng, Cui, Wei, Cui, WeiWei, Deng, JingKang, Dong, YongWei, Du, YuanYuan, Fu, MinXue, Gao, GuanHua, Gao, He, Gao, Min, Ge, MingYu, Gu, YuDong, Guan, Ju, Gungor, Can, Guo, ChengCheng, Han, DaWei, Hu, Wei, Huang, Yue, Huo, Jia, Jia, ShuMei, Jiang, LuHua, Jiang, WeiChun, Jin, Jing, Jin, YongJie, Li, Bing, Li, ChengKui, Li, Gang, Li, MaoShun, Li, Wei, Li, Xian, Li, XiaoBo, Li, XuFang, Li, YanGuo, Li, ZiJian, Li, ZhengWei, Liang, XiaoHua, Liao, JinYuan, Liu, GuoQing, Liu, HongWei, Liu, ShaoZhen, Liu, XiaoJing, Liu, Yuan, Liu, YiNong, Lu, Bo, Lu, XueFeng, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, JianYin, Ou, Ge, Qu, JinLu, Sai, Na, Shang, RenCheng, Shen, GuoHong, Sun, Liang, Tan, Ying, Tao, Lian, Tuo, YouLi, Wang, Chen, Wang, ChunQin, Wang, GuoFeng, Wang, HuanYu, Wang, Juan, Wang, WenShuai, Wang, YuSa, Wen, XiangYang, Wu, BaiYang, Wu, BoBing, Wu, Mei, Xiao, GuangCheng, Xiong, ShaoLin, Yan, LinLi, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Yi, QiBin, Yuan, Bin, Zhang, AiMei, Zhang, ChunLei, Zhang, ChengMo, Zhang, Fan, Zhang, HongMei, Zhang, Juan, Zhang, Qiang, Zhang, ShenYi, Zhang, Shu, Zhang, Tong, Zhang, WanChang, Zhang, Wei, Zhang, WenZhao, Zhang, Yi, Zhang, YiFei, Zhang, YongJie, Zhang, Yue, Zhang, Zhao, Zhang, Zhi, Zhang, ZiLiang, Zhao, HaiSheng, Zhao, XiaoFan, Zheng, ShiJie, Zhou, JianFeng, Zhu, YuXuan, Zhu, Yue, and Zhuang, RenLin
Published: 2020
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24. The Medium Energy X-ray telescope (ME) onboard the Insight-HXMT astronomy satellite

Author: Cao, XueLei, Jiang, WeiChun, Meng, Bin, Zhang, WanChang, Luo, Tao, Yang, Sheng, Zhang, ChunLei, Gu, YuDong, Sun, Liang, Liu, XiaoJing, Yang, JiaWei, Li, Xian, Tan, Ying, Liu, ShaoZhen, Du, YuanYuan, Lu, FangJun, Xu, YuPeng, Guan, Ju, Zhang, ShuangNan, Wang, HuanYu, Li, TiPei, Zhang, ChengMo, Wen, XiangYang, Qu, JinLu, Song, LiMing, Li, XiaoBo, Ge, MingYu, Zhou, YuPeng, Xiong, ShaoLin, Zhang, Shu, Zhang, YongJie, Cheng, ZeHao, Zhang, Fei, Li, MaoShun, Liang, XiaoHua, Gao, Min, Yang, EnBo, Liu, XiaoHang, Liu, HongWei, Yang, YiJung, and Zhang, Fan
Published: 2020
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25. A fast simulation model of 2-D photoelectron track images for gaseous X-ray polarimetry

Author: Jiang, Jiechen, primary, Jiao, Yang, additional, Jiang, Weichun, additional, He, Huilin, additional, Xu, Yupeng, additional, Qi, Liqiang, additional, Liu, Xiaohua, additional, Du, Yuanyuan, additional, Liu, Xiaojing, additional, and Yang, Sheng, additional
Published: 2023
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26. In-orbit performance of ME onboard Insight-HXMT in the first 5 years

Author: Tan, Ying, primary, Cao, Xuelei, additional, Jiang, Weichun, additional, Li, Xiaobo, additional, Meng, Bin, additional, Zhang, Wanchang, additional, Yang, Sheng, additional, Luo, Tao, additional, Gu, Yudong, additional, Sun, Liang, additional, Liu, Xiaojing, additional, Du, Yuanyuan, additional, Yang, Jiawei, additional, Xu, Yanjun, additional, Liao, Jinyuan, additional, Xu, Yupeng, additional, Lu, Fangjun, additional, Song, Liming, additional, and Zhang, Shuangnan, additional
Published: 2023
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27. The enhanced x-ray timing and polarimetry mission: eXTP: an update on its scientific cases, mission profile and development status

Author: Zhang, Shuang Nan, Santangelo, Andrea, Xu, Yupeng, Feroci, Marco, Hernanz, Margarita, Lu, Fangjun, Chen, Yong, Feng, Hua, Nandra, Kirpal, Jiang, Weichun, Svoboda, Jiri, Brandt, Søren, Schanne, Stéphane, Zand, Jean, Michalska, Malgorzata, Bozzo, Enrico, Kalemci, Emrah, Agudo, Ivan, Ahangarianabhari, Mahdi, Aitink-Kroes, Gabby, Ambrosi, Giovanni, Ambrosino, Filippo, An, Zhenghua, Perez Torres, Miguel Angel, Antonelli, Matias, Argan, Andrea, Babinec, Viktor, Baldini, Luca, Barbera, Marco, van Baren, Coen, Baudin, David, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Bi, Xingzi, Boezio, Mirko, Bonvicini, Valter, Bonvicini, Walter, Bordas, Pol, Borghese, Alice, Borghi, Giacomo, Bouyjou, Florent, Bozkurt, Ayhan, Brez, Alessandro, Brienza, Daniele, Cadoux, Franck, Campana, Riccardo, Cao, Jiewei, Cao, Xuelei, Casares, Jorge, Cavazzuti, Elisabetta, Ceraudo, Francesco, Chen, Tianxiang, Chen, Wen, Chen, Can, Chen, Yupeng, Chen, Xin, Chen, Yehai, Chenevez, Jerome, Cheng, Yaodong, Cirrincione, Daniela, Civitani, Marta, Cong, Min, Zelati, Francesco Coti, Cui, Weiwei, Cui, Tao, Cui, Wei, Dai, Boyu, Dauser, Thomas, De Angelis, Nicolas, De Marco, Barbara, De Rosa, Alessandra, Monte, Ettore Del, Cosimo, Sergio Di, Diebold, Sebastian, Dilillo, Giuseppe, Ding, Fei, Dohnal, Roman, Dong, Zefang, Donnarumma, Immacolata, Dovciak, Michal, Du, Yuanyuan, Ducci, Lorenzo, Evangelista, Yuri, Fan, Qingmei, Favre, Yannick, Ferrés, Patrícia, Fiandrini, Emanuele, Ficorella, Francesco, Fuschino, Fabio, Gálvez, José Luis, Gao, Na, Gao, Min, Ge, Yuqiang, Ge, Mingyu, Gevin, Olivier, Grassi, Marco, Gu, Yudong, Gu, Quanying, Guan, Ju, Guedel, Manuel, Han, Xingbo, Han, Dawei, He, Huilin, He, Junwang, Hedderman, Paul, den Herder, Jan Willem, Hong, Bin, Hormaetxe, Ander, Hou, Dongjie, Hu, Zexun, Hu, Hao, Hu, Qingbao, Hu, Yu, Huang, Yue, Huang, Jiangjiang, Huang, Qiushi, Huo, Jia, Hynek, Richard, Iwasawa, Kazumi, Izzo, Lucca, Ji, Long, Jia, Shumei, Jiang, Bowen, Jiang, Wei, Jiang, Jiechen, Jiang, Xiaowei, Jiao, Yang, Jin, Ge, Jin, Fan, Jose, Jordi, Karas, Vladimir, Kennedy, Thomas, Kirsch, Christian, Kole, Merlin, Komarek, Martin, Kreykenbohm, Ingo, Kuiper, Lucien, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Laubert, Phillip, Li, Tao, Li, Longhui, Li, Hong, Li, Duo, Li, Wei, Li, Maoshun, Li, Gang, Li, Xiaobo, Li, Chengkui, Li, Bing, Li, Haibo, Liang, Hong, Liao, Qiuyan, Liao, Jinyuan, Limousin, Olivier, Lin, Yanjian, Linares, Manuel, Liu, Rui, Liu, Yichen, Liu, Zhihao, Liu, Hongwei, Liu, Xiaojing, Liu, Xiaohua, Cicero, Ugo Lo, Loehring, Jens, Lombardi, Giovanni, Lorenz, Maximilian, Lu, Bing, Lucchesi, Leonardo, Luo, Tao, Luo, Laidan, Ma, Jia, Ma, Xiang, Macera, Daniele, Malcovati, Piero, Manfreda, Alberto, Paredes, Josep Maria, Marinucci, Andrea, Martindale, Adrian, Meidinger, Norbert, Mele, Filippo, Mendes, Vasco, Meng, Bin, Merkl, Martin, Meuris, Aline, Miniutti, Giovanni, Minuti, Massimo, Morbidini, Alfredo, Morgante, Gianluca, Muleri, Fabio, Munini, Riccardo, Mussolin, Lorenzo, Negri, Barbara, Nie, Jianyin, Novák, Petr, Nowosielski, Witold, Nuti, Alessio, Onat, Ahmet, Orleanski, Piotr, Orsini, Leonardo, Ottensamer, Roland, Ou, Ge, Pacciani, Luigi, Paltani, Stephane, Pan, Teng, Pan, Kai, Pareschi, Giovanni, Patruno, Alessandro, Pepponi, Giancarlo, Perinati, Emanuele, Piazzolla, Raffaele, Picciotto, Antonino, Piemonte, Claudio, Pinchera, Michele, Pliego, Samuel, Poutanen, Juri, Qi, Liqiang, Qi, Fazhi, Qiang, Pengfei, Qiao, Fangjian, Qiao, Zheng, Qiu, Xiangbiao, Qiu, Chengbo, Qu, Jinlu, Rachevski, Alexandre, Rashevskaia, Irina, Rea, Nanda, Ribo, Marc, de la Rie, Rob, Rodriguez, Jerome, Gil, Pablo Rodríguez, Sala, Gloria, Schanz, Thomas, Serafinelli, Roberto, Sgro, Carmelo, Shen, Zhengxiang, Sheng, Lizhi, Shi, Jingyan, Sironi, Giorgia, Skup, Konrad, Song, Liming, Song, Zeyu, Song, Jiangbo, Spandre, Gloria, Spiga, Daniele, Su, Yongquan, Sun, Liang, Sungur, Müberra, Svéda, Libor, Tagliaferri, Gianpiero, Tan, Ying, Tao, Lian, Tcherniak, Denis, Tenzer, Chris, Todaro, Michela, Tolos, Laura, Torok, Gabriel, Torres, Diego F., Trois, Alessio, Turhan, Onur, Uttley, Phil, Vacchi, Andrea, Virgilli, Enrico, Vogel, Channah, Walton, Dave, Wang, Jian, Wang, Xianqi, Wang, Bo, Wang, Langping, Wang, Xiaofeng, Wang, Dianlong, Wang, Yusa, Wang, Juan, Wang, Hao, Wang, Ruijie, Wang, Ping, Wang, Lingjun, Wang, Wenshuai, Wang, Tian, Wang, Haoyu, Wang, Zhanshan, Watts, Anna L., Wen, Xiangyang, Wilms, Jörn, Winter, Berend, Wu, Xin, Wu, Chao, Wu, Zhenyu, Wu, Qiong, Wu, Kaiji, Xiong, Hao, Xiong, Shaolin, Xu, Wei, Xu, Zhao, Xu, Jingjing, Xu, Xiongwei, Xue, Jiadai, Yan, Yongqing, Yan, Xingtao, Yang, Xianghui, Yang, Yanji, Yang, Xiongtao, Yang, Sheng, Yang, Jiawei, Yang, Yingquan, Yi, Shuxu, Yu, Yonggao, Yu, Ke, Zampa, Ganluigi, Zampa, Nicola, Zane, Silvia, Zdziarski, Andrzej A., Zhang, Long, Zhang, Shu, Zhang, Wenda, Zhang, Xiaoli, Zhang, Zhen, Zhang, Jiawei, Zhang, Fan, Zhang, Ziliang, Zhang, Dali, Zhang, Honglin, Zhang, Aimei, Zhang, Tong, Zhang, Hongmei, Zhang, Juan, Zhang, Liang, Zhang, Yueting, Zhao, Li, Zhao, Baosheng, Zhao, Zijian, Zhao, Xiaofan, Zhao, Haisheng, Zhao, Xiaoyun, Zheng, Shijie, Zhou, Yupeng, Zhou, Xiaohong, Zhu, Jiahuan, Zhu, Yuxuan, Zhu, Cheng, Zhu, Zhencai, Zorzi, Nicola, Zwart, Frans, den Herder, Jan-Willem A., Nikzad, Shouleh, Nakazawa, Kazuhiro, Chinese Academy of Sciences, Agenzia Spaziale Italiana, Ministerio de Ciencia e Innovación (España), Federal Ministry of Economics and Technology (Germany), and Foundation for Polish Science
Subjects: Equation of state, Extreme gravity, Black hole, X-ray timing, X-ray polarimetry, Neutron star, Extreme magnetism, Extreme density
Abstract: Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray (2022), Montreal, Jul 17-22, 2022.--Proceedings of SPIE - The International Society for Optical Engineering vol. 12181 Article number 121811W.-- Full list of authors: Zhang, Shuang-Nan; Santangelo, Andrea; Xu, Yupeng; Feroci, Marco; Hernanz, Margarita; Lu, Fangjun; Chen, Yong; Feng, Hua; Nandra, Kirpal; Jiang, Weichun; Svoboda, Jiri; Brandt, Soren; Schanne, Stephane; in't Zand, Jean; Michalska, Malgorzata; Bozzo, Enrico; Kalemci, Emrah; Agudo, Ivan; Ahangarianabhari, Mahdi; Aitink-Kroes, Gabby; Ambrosi, Giovanni; Ambrosino, Filippo; An, Zhenghua; Perez Torres, Miguel Angel; Antonelli, Matias; Argan, Andrea; Babinec, Viktor; Baldini, Luca; Barbera, Marco; van Baren, Coen; Baudin, David; Bayer, Joerg; Bellazzini, Ronaldo; Bellutti, Pierluigi; Bertucci, Bruna; Bertuccio, Giuseppe; Bi, Xingzi; Boezio, Mirko; Bonvicini, Valter; Bonvicini, Walter; Bordas, Pol; Borghese, Alice; Borghi, Giacomo; Bouyjou, Florent; Bozkurt, Ayhan; Brez, Alessandro; Brienza, Daniele; Cadoux, Franck; Campana, Riccardo; Cao, Jiewei; Cao, Xuelei; Casares, Jorge; Cavazzuti, Elisabetta; Ceraudo, Francesco; Chen, Tianxiang; Chen, Wen; Chen, Can; Chen, Yupeng; Chen, Xin; Chen, Yehai; Chenevez, Jerome; Cheng, Yaodong; Cirrincione, Daniela; Civitani, Marta; Cong, Min; Coti Zelati, Francesco; Cui, Weiwei; Cui, Tao; Cui, Wei; Dai, Boyu; Dauser, Thomas; De Angelis, Nicolas; De Marco, Barbara; De Rosa, Alessandra; Del Monte, Ettore; Di Cosimo, Sergio; Diebold, Sebastian; Dilillo, Giuseppe; Ding, Fei; Dohnal, Roman; Dong, Zefang; Donnarumma, Immacolata; Dovciak, Michal; Du, Yuanyuan; Ducci, Lorenzo; Evangelista, Yuri; Fan, Qingmei; Favre, Yannick; Ferres, Patricia; Fiandrini, Emanuele; Ficorella, Francesco; Fuschino, Fabio; Luis Galvez, Jose; Gao, Na; Gao, Min; Ge, Yuqiang; Ge, Mingyu; Gevin, Olivier; Grassi, Marco; Gu, Yudong; Gu, Quanying; Guan, Ju; Guedel, Manuel; Han, Xingbo; Han, Dawei; He, Huilin; He, Junwang; Hedderman, Paul; den Herder, Jan-Willem; Hong, Bin; Hormaetxe, Ander; Hou, Dongjie; Hu, Zexun; Hu, Hao; Hu, Qingbao; Hu, Yu; Huang, Yue; Huang, Jiangjiang; Huang, Qiushi; Huo, Jia; Hynek, Richard; Iwasawa, Kazumi; Izzo, Lucca; Ji, Long; Jia, Shumei; Jiang, Bowen; Jiang, Wei; Jiang, Jiechen; Jiang, Xiaowei; Jiao, Yang; Jin, Ge; Jin, Fan; Jose, Jordi; Karas, Vladimir; Kennedy, Thomas; Kirsch, Christian; Kole, Merlin; Komarek, Martin; Kreykenbohm, Ingo; Kuiper, Lucien; Kuvvetli, Irfan; Labanti, Claudio; Latronico, Luca; Laubert, Phillip; Li, Tao; Li, Longhui; Li, Hong; Li, Duo; Li, Wei; Li, Maoshun; Li, Gang; Li, Xiaobo; Li, Chengkui; Li, Bing; Li, Haibo; Liang, Hong; Liao, Qiuyan; Liao, Jinyuan; Limousin, Olivier; Lin, Yanjian; Linares, Manuel; Liu, Rui; Liu, Yichen; Liu, Zhihao; Liu, Hongwei; Liu, Xiaojing; Liu, Xiaohua; Lo Cicero, Ugo; Loehring, Jens; Lombardi, Giovanni; Lorenz, Maximilian; Lu, Bing; Lucchesi, Leonardo; Luo, Tao; Luo, Laidan; Ma, Jia; Ma, Xiang; Macera, Daniele; Malcovati, Piero; Manfreda, Alberto; Maria Paredes, Josep; Marinucci, Andrea; Martindale, Adrian; Meidinger, Norbert; Mele, Filippo; Mendes, Vasco; Meng, Bin; Merkl, Martin; Meuris, Aline; Miniutti, Giovanni; Minuti, Massimo; Morbidini, Alfredo; Morgante, Gianluca; Muleri, Fabio; Munini, Riccardo; Mussolin, Lorenzo; Negri, Barbara; Nie, Jianyin; Novak, Petr; Nowosielski, Witold; Nuti, Alessio; Onat, Ahmet; Orleanski, Piotr; Orsini, Leonardo; Ottensamer, Roland; Ou, Ge; Pacciani, Luigi; Paltani, Stephane; Pan, Teng; Pan, Kai; Pareschi, Giovanni; Patruno, Alessandro; Pepponi, Giancarlo; Perinati, Emanuele; Piazzolla, Raffaele; Picciotto, Antonino; Piemonte, Claudio; Pinchera, Michele; Pliego, Samuel; Poutanen, Juri; Qi, Liqiang; Qi, Fazhi; Qiang, Pengfei; Qiao, Fangjian; Qiao, Zheng; Qiu, Xiangbiao; Qiu, Chengbo; Qu, Jinlu; Rachevski, Alexandre; Rashevskaia, Irina; Rea, Nanda; Ribo, Marc; de la Rie, Rob; Rodriguez, Jerome; Rodriguez Gil, Pablo; Sala, Gloria; Schanz, Thomas; Serafinelli, Roberto; Sgro, Carmelo; Shen, Zhengxiang; Sheng, Lizhi; Shi, Jingyan; Sironi, Giorgia; Skup, Konrad; Song, Liming; Song, Zeyu; Song, Jiangbo; Spandre, Gloria; Spiga, Daniele; Su, Yongquan; Sun, Liang; Sungur, Muberra; Sveda, Libor; Tagliaferri, Gianpiero; Tan, Ying; Tao, Lian; Tcherniak, Denis; Tenzer, Chris; Todaro, Michela; Tolos, Laura; Torok, Gabriel; Torres, Diego F.; Trois, Alessio; Turhan, Onur; Uttley, Phil; Vacchi, Andrea; Virgilli, Enrico; Vogel, Channah; Walton, Dave; Wang, Jian; Wang, Xianqi; Wang, Bo; Wang, Langping; Wang, Xiaofeng; Wang, Dianlong; Wang, Yusa; Wang, Juan; Wang, Hao; Wang, Ruijie; Wang, Ping; Wang, Lingjun; Wang, Wenshuai; Wang, Tian; Wang, Haoyu; Wang, Zhanshan; Watts, Anna L.; Wen, Xiangyang; Wilms, Joern; Winter, Berend; Wu, Xin; Wu, Chao; Wu, Zhenyu; Wu, Qiong; Wu, Kaiji; Xiong, Hao; Xiong, Shaolin; Xu, Wei; Xu, Zhao; Xu, Jingjing; Xu, Xiongwei; Xue, Jiadai; Yan, Yongqing; Yan, Xingtao; Yang, Xianghui; Yang, Yanji; Yang, Xiongtao; Yang, Sheng; Yang, Jiawei; Yang, Yingquan; Yi, Shuxu; Yu, Yonggao; Yu, Ke; Zampa, Ganluigi; Zampa, Nicola; Zane, Silvia; Zdziarski, Andrzej A.; Zhang, Long; Zhang, Shu; Zhang, Wenda; Zhang, Xiaoli; Zhang, Zhen; Zhang, Jiawei; Zhang, Fan; Zhang, Ziliang; Zhang, Dali; Zhang, Honglin; Zhang, Aimei; Zhang, Tong; Zhang, Hongmei; Zhang, Juan; Zhang, Liang; Zhang, Yueting; Zhao, Li; Zhao, Baosheng; Zhao, Zijian; Zhao, Xiaofan; Zhao, Haisheng; Zhao, Xiaoyun; Zheng, Shijie; Zhou, Yupeng; Zhou, Xiaohong; Zhu, Jiahuan; Zhu, Yuxuan; Zhu, Cheng; Zhu, Zhencai; Zorzi, Nicola; Zwart, Frans, The enhanced X-ray Timing and Polarimetry mission (eXTP) is a flagship observatory for X-ray timing, spectroscopy and polarimetry developed by an International Consortium. Thanks to its very large collecting area, good spectral resolution and unprecedented polarimetry capabilities, eXTP will explore the properties of matter and the propagation of light in the most extreme conditions found in the Universe. eXTP will, in addition, be a powerful X-ray observatory. The mission will continuously monitor the X-ray sky, and will enable multiwavelength and multi-messenger studies. The mission is currently in phase B, which will be completed in the middle of 2022. © 2022 SPIE. All rights reserved., The Chinese team acknowledges support by the Chinese Academy of Sciences through the Strategic Priority Research Program, Grant No. XDA15020100. The Italian authors acknowledge funding support by the Italian Space Agency (under agreement n. 2020-3-HH.0 and ASI-INAF n.2017-14-H.O) and INFN (project XRO -X-ray Observatories). The Spanish authors acknowledge funding support from the MICIN/AEI grant PID2019-108709GB-I00. The German team acknowledges support from the Bundesministerium fur Wirtschaft und Technologie through the Deutsches Zentrum fur Luft-und Raumfahrt e.V. (DLR) under the grant number FKZ 50 OO 1902. The Polish team acknowledges FNP grant POIR.04.04.00-00-5C65/17. The Czech team acknowledges support from the GACR project 21-06825X. The Turkish team acknowledges support from the Turkish Space Agency., With funding from the Spanish government through the Severo Ochoa Centre of Excellence accreditation SEV-2017-0709
Published: 2022

28. An Insight-HXMT View of the mHz Quasi-regular Modulation Phenomenon in the Black Hole X-Ray Binary 4U 1630–47

Author: Yang, Zi-xu, primary, Zhang, Liang, additional, Huang, Yue, additional, Bu, Qingcui, additional, Zhang, Zhen, additional, Liu, He-Xin, additional, Yu, Wei, additional, Wang, Peng-Ju, additional, Zhao, Q. C., additional, Tao, L., additional, Qu, Jin-Lu, additional, Zhang, Shu, additional, Zhang, Shuang-Nan, additional, Song, Liming, additional, Lu, Fangjun, additional, Cao, Xuelei, additional, Chen, Li, additional, Cai, Ce, additional, Chang, Zhi, additional, Chen, Tianxiang, additional, Chen, Yong, additional, Chen, Yupeng, additional, Chen, Yibao, additional, Cui, Weiwei, additional, Ding, Guoqiang, additional, Du, Yuanyuan, additional, Gao, Guanhua, additional, Gao, He, additional, Ge, Mingyu, additional, Gu, Yudong, additional, Guan, Ju, additional, Guo, Chengcheng, additional, Han, Dawei, additional, Huo, Jia, additional, Jia, Shumei, additional, Jiang, Weichun, additional, Jin, Jing, additional, Kong, Lingda, additional, Li, Bing, additional, Li, Gang, additional, Li, Wei, additional, Li, Xian, additional, Li, Xufang, additional, Li, Zhengwei, additional, Li, Chengkui, additional, Lin, Lin, additional, Liu, Congzhan, additional, Li, Tipei, additional, Li, Xiaobo, additional, Liang, Xiaohua, additional, Liao, Jinyuan, additional, Liu, Hongwei, additional, Liu, Xiaojing, additional, Lu, Xuefeng, additional, Luo, Qi, additional, Luo, Tao, additional, Ma, Binyuan, additional, Ma, RuiCan, additional, Ma, Xiang, additional, Meng, Bin, additional, Nang, Yi, additional, Nie, Jianyin, additional, Ou, Ge, additional, Ren, Xiaoqin, additional, Sai, Na, additional, Song, Xinying, additional, Sun, Liang, additional, Tan, Ying, additional, Tuo, Youli, additional, Wang, Chen, additional, Wang, Wenshuai, additional, Wang, Lingjun, additional, Wang, Yusa, additional, Wang, Jieshuang, additional, Wen, Xiangyang, additional, Wu, Bobing, additional, Wu, Baiyang, additional, Wu, Mei, additional, Xiao, Shuo, additional, Xu, Yupeng, additional, Xiong, Shaolin, additional, Yang, Sheng, additional, Yang, Yanji, additional, Yi, Qibin, additional, Yin, Qianqing, additional, You, Yuan, additional, Zhang, Bing, additional, Zhang, Fan, additional, Zhang, Hongmei, additional, Zhang, Juan, additional, Zhang, Wanchang, additional, Zhang, Wei, additional, Zhang, Binbin, additional, Zhang, Peng, additional, Zhang, Yifei, additional, Zhang, Yuanhang, additional, Zhao, Haisheng, additional, Zhao, Xiaofan, additional, Zheng, Shijie, additional, and Zhou, Dengke, additional
Published: 2022
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29. X-Ray Polarimetry of the Accreting Pulsar 1A 0535+262 in the Supercritical State with PolarLight.

Author: Long, Xiangyun, Feng, Hua, Li, Hong, Kong, Ling-Da, Heyl, Jeremy, Ji, Long, Tao, Lian, Muleri, Fabio, Wu, Qiong, Zhu, Jiahuan, Huang, Jiahui, Minuti, Massimo, Jiang, Weichun, Citraro, Saverio, Nasimi, Hikmat, Yu, Jiandong, Jin, Ge, Zeng, Ming, An, Peng, and Baldini, Luca
Subjects: PULSARS, X-rays, POLARIMETRY
Abstract: The X-ray pulsar 1A 0535+262 exhibited a giant outburst in 2020, offering us a unique opportunity for X-ray polarimetry of an accreting pulsar in the supercritical state. Measurement with PolarLight yielded a nondetection in 3–8 keV; the 99% upper limit of the polarization fraction (PF) is found to be 0.34 averaged over spin phases, or 0.51 based on the rotating vector model. No useful constraint can be placed with phase-resolved polarimetry. These upper limits are lower than a previous theoretical prediction of 0.6–0.8, but consistent with those found in other accreting pulsars, like Her X-1, Cen X-3, 4U 1626−67, and GRO J1008−57, which were in the subcritical state, or at least not confidently in the supercritical state, during the polarization measurements. Our results suggest that the relatively low PF seen in accreting pulsars cannot be attributed to the source not being in the supercritical state, but could be a general feature. [ABSTRACT FROM AUTHOR]
Published: 2023
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30. Design and testing of the structure of the eXTP optics

Author: Song, Zeyu, primary, Ma, Jia, additional, Wang, Juan, additional, Zhang, Aimei, additional, Wang, Yusa, additional, Yang, Yanji, additional, Jiang, Weichun, additional, Chen, Yong, additional, Yu, Ke, additional, Yang, Sheng, additional, Xu, Yupeng, additional, He, Huilin, additional, Lu, Fangjun, additional, Zhang, Shuangnan, additional, Basso, Stefano, additional, Civitani, Marta M., additional, Pareschi, Giovanni, additional, Sironi, Giorgia, additional, Spiga, Daniele, additional, Cotroneo, Vincenzo, additional, Tagliaferri, Gianpiero, additional, Sheng, Lizhi, additional, Yan, Yongqing, additional, Qiang, PengFei, additional, and Zhao, Baosheng, additional
Published: 2022
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31. Implementation of the Polarimetry Focusing Telescope Array Observation Simulator on board the X-Ray Timing and Polarimetry Observatory

Author: Qi, Liqiang, primary, Li, Gang, additional, Ge, Mingyu, additional, Zhang, Juan, additional, Jiang, Weichun, additional, Liu, Xiaohua, additional, Yang, Sheng, additional, Du, Yuanyuan, additional, Dong, Zefang, additional, Yang, Yanji, additional, Liu, Xiaojing, additional, Sun, Liang, additional, Jiang, Jiechen, additional, Yang, Jiawei, additional, Chen, Tianxiang, additional, Jiao, Yang, additional, Dai, Boyu, additional, He, Huilin, additional, Xu, Yupeng, additional, and Lu, Fangjun, additional
Published: 2022
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32. The enhanced X-ray Timing and Polarimetry mission – eXTP:an update on its scientific cases, mission profile and development status

Author: den Herder, Jan-Willem A., Nikzad, Shouleh, Nakazawa, Kazuhiro, Zhang, Shuang Nan, Santangelo, Andrea, Xu, Yupeng, Feroci, Marco, Hernanz, Margarita, Lu, Fangjun, Chen, Yong, Feng, Hua, Nandra, Kirpal, Jiang, Weichun, Svoboda, Jiri, Brandt, Søren, Schanne, Stéphane, Zand, Jean, Michalska, Malgorzata, Bozzo, Enrico, Kalemci, Emrah, Agudo, Ivan, Ahangarianabhari, Mahdi, Aitink-Kroes, Gabby, Ambrosi, Giovanni, Ambrosino, Filippo, An, Zhenghua, Perez Torres, Miguel Angel, Antonelli, Matias, Argan, Andrea, Babinec, Viktor, Baldini, Luca, Barbera, Marco, van Baren, Coen, Baudin, David, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Bi, Xingzi, Boezio, Mirko, Bonvicini, Valter, Bonvicini, Walter, Bordas, Pol, Borghese, Alice, Borghi, Giacomo, Bouyjou, Florent, Bozkurt, Ayhan, Brez, Alessandro, Brienza, Daniele, Cadoux, Franck, Campana, Riccardo, Cao, Jiewei, Cao, Xuelei, Casares, Jorge, Cavazzuti, Elisabetta, Ceraudo, Francesco, Chen, Tianxiang, Chen, Wen, Chen, Can, Chen, Yupeng, Chen, Xin, Chen, Yehai, Chenevez, Jerome, Cheng, Yaodong, Cirrincione, Daniela, Civitani, Marta, Cong, Min, Zelati, Francesco Coti, Cui, Weiwei, Cui, Tao, Cui, Wei, Dai, Boyu, Dauser, Thomas, De Angelis, Nicolas, De Marco, Barbara, De Rosa, Alessandra, Monte, Ettore Del, Cosimo, Sergio Di, Diebold, Sebastian, Dilillo, Giuseppe, Ding, Fei, Dohnal, Roman, Dong, Zefang, Donnarumma, Immacolata, Dovciak, Michal, Du, Yuanyuan, Ducci, Lorenzo, Evangelista, Yuri, Fan, Qingmei, Favre, Yannick, Ferrés, Patrícia, Fiandrini, Emanuele, Ficorella, Francesco, Fuschino, Fabio, Gálvez, José Luis, Gao, Na, Gao, Min, Ge, Yuqiang, Ge, Mingyu, Gevin, Olivier, Grassi, Marco, Gu, Yudong, Gu, Quanying, Guan, Ju, Guedel, Manuel, Han, Xingbo, Han, Dawei, He, Huilin, He, Junwang, Hedderman, Paul, den Herder, Jan Willem, Hong, Bin, Hormaetxe, Ander, Hou, Dongjie, Hu, Zexun, Hu, Hao, Hu, Qingbao, Hu, Yu, Huang, Yue, Huang, Jiangjiang, Huang, Qiushi, Huo, Jia, Hynek, Richard, Iwasawa, Kazumi, Izzo, Lucca, Ji, Long, Jia, Shumei, Jiang, Bowen, Jiang, Wei, Jiang, Jiechen, Jiang, Xiaowei, Jiao, Yang, Jin, Ge, Jin, Fan, Jose, Jordi, Karas, Vladimir, Kennedy, Thomas, Kirsch, Christian, Kole, Merlin, Komarek, Martin, Kreykenbohm, Ingo, Kuiper, Lucien, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Laubert, Phillip, Li, Tao, Li, Longhui, Li, Hong, Li, Duo, Li, Wei, Li, Maoshun, Li, Gang, Li, Xiaobo, Li, Chengkui, Li, Bing, Li, Haibo, Liang, Hong, Liao, Qiuyan, Liao, Jinyuan, Limousin, Olivier, Lin, Yanjian, Linares, Manuel, Liu, Rui, Liu, Yichen, Liu, Zhihao, Liu, Hongwei, Liu, Xiaojing, Liu, Xiaohua, Cicero, Ugo Lo, Loehring, Jens, Lombardi, Giovanni, Lorenz, Maximilian, Lu, Bing, Lucchesi, Leonardo, Luo, Tao, Luo, Laidan, Ma, Jia, Ma, Xiang, Macera, Daniele, Malcovati, Piero, Manfreda, Alberto, Paredes, Josep Maria, Marinucci, Andrea, Martindale, Adrian, Meidinger, Norbert, Mele, Filippo, Mendes, Vasco, Meng, Bin, Merkl, Martin, Meuris, Aline, Miniutti, Giovanni, Minuti, Massimo, Morbidini, Alfredo, Morgante, Gianluca, Muleri, Fabio, Munini, Riccardo, Mussolin, Lorenzo, Negri, Barbara, Nie, Jianyin, Novák, Petr, Nowosielski, Witold, Nuti, Alessio, Onat, Ahmet, Orleanski, Piotr, Orsini, Leonardo, Ottensamer, Roland, Ou, Ge, Pacciani, Luigi, Paltani, Stephane, Pan, Teng, Pan, Kai, Pareschi, Giovanni, Patruno, Alessandro, Pepponi, Giancarlo, Perinati, Emanuele, Piazzolla, Raffaele, Picciotto, Antonino, Piemonte, Claudio, Pinchera, Michele, Pliego, Samuel, Poutanen, Juri, Qi, Liqiang, Qi, Fazhi, Qiang, Pengfei, Qiao, Fangjian, Qiao, Zheng, Qiu, Xiangbiao, Qiu, Chengbo, Qu, Jinlu, Rachevski, Alexandre, Rashevskaia, Irina, Rea, Nanda, Ribo, Marc, de la Rie, Rob, Rodriguez, Jerome, Gil, Pablo Rodríguez, Sala, Gloria, Schanz, Thomas, Serafinelli, Roberto, Sgro, Carmelo, Shen, Zhengxiang, Sheng, Lizhi, Shi, Jingyan, Sironi, Giorgia, Skup, Konrad, Song, Liming, Song, Zeyu, Song, Jiangbo, Spandre, Gloria, Spiga, Daniele, Su, Yongquan, Sun, Liang, Sungur, Müberra, Svéda, Libor, Tagliaferri, Gianpiero, Tan, Ying, Tao, Lian, Tcherniak, Denis, Tenzer, Chris, Todaro, Michela, Tolos, Laura, Torok, Gabriel, Torres, Diego F., Trois, Alessio, Turhan, Onur, Uttley, Phil, Vacchi, Andrea, Virgilli, Enrico, Vogel, Channah, Walton, Dave, Wang, Jian, Wang, Xianqi, Wang, Bo, Wang, Langping, Wang, Xiaofeng, Wang, Dianlong, Wang, Yusa, Wang, Juan, Wang, Hao, Wang, Ruijie, Wang, Ping, Wang, Lingjun, Wang, Wenshuai, Wang, Tian, Wang, Haoyu, Wang, Zhanshan, Watts, Anna L., Wen, Xiangyang, Wilms, Jörn, Winter, Berend, Wu, Xin, Wu, Chao, Wu, Zhenyu, Wu, Qiong, Wu, Kaiji, Xiong, Hao, Xiong, Shaolin, Xu, Wei, Xu, Zhao, Xu, Jingjing, Xu, Xiongwei, Xue, Jiadai, Yan, Yongqing, Yan, Xingtao, Yang, Xianghui, Yang, Yanji, Yang, Xiongtao, Yang, Sheng, Yang, Jiawei, Yang, Yingquan, Yi, Shuxu, Yu, Yonggao, Yu, Ke, Zampa, Ganluigi, Zampa, Nicola, Zane, Silvia, Zdziarski, Andrzej A., Zhang, Long, Zhang, Shu, Zhang, Wenda, Zhang, Xiaoli, Zhang, Zhen, Zhang, Jiawei, Zhang, Fan, Zhang, Ziliang, Zhang, Dali, Zhang, Honglin, Zhang, Aimei, Zhang, Tong, Zhang, Hongmei, Zhang, Juan, Zhang, Liang, Zhang, Yueting, Zhao, Li, Zhao, Baosheng, Zhao, Zijian, Zhao, Xiaofan, Zhao, Haisheng, Zhao, Xiaoyun, Zheng, Shijie, Zhou, Yupeng, Zhou, Xiaohong, Zhu, Jiahuan, Zhu, Yuxuan, Zhu, Cheng, Zhu, Zhencai, Zorzi, Nicola, Zwart, Frans, den Herder, Jan-Willem A., Nikzad, Shouleh, Nakazawa, Kazuhiro, Zhang, Shuang Nan, Santangelo, Andrea, Xu, Yupeng, Feroci, Marco, Hernanz, Margarita, Lu, Fangjun, Chen, Yong, Feng, Hua, Nandra, Kirpal, Jiang, Weichun, Svoboda, Jiri, Brandt, Søren, Schanne, Stéphane, Zand, Jean, Michalska, Malgorzata, Bozzo, Enrico, Kalemci, Emrah, Agudo, Ivan, Ahangarianabhari, Mahdi, Aitink-Kroes, Gabby, Ambrosi, Giovanni, Ambrosino, Filippo, An, Zhenghua, Perez Torres, Miguel Angel, Antonelli, Matias, Argan, Andrea, Babinec, Viktor, Baldini, Luca, Barbera, Marco, van Baren, Coen, Baudin, David, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Bi, Xingzi, Boezio, Mirko, Bonvicini, Valter, Bonvicini, Walter, Bordas, Pol, Borghese, Alice, Borghi, Giacomo, Bouyjou, Florent, Bozkurt, Ayhan, Brez, Alessandro, Brienza, Daniele, Cadoux, Franck, Campana, Riccardo, Cao, Jiewei, Cao, Xuelei, Casares, Jorge, Cavazzuti, Elisabetta, Ceraudo, Francesco, Chen, Tianxiang, Chen, Wen, Chen, Can, Chen, Yupeng, Chen, Xin, Chen, Yehai, Chenevez, Jerome, Cheng, Yaodong, Cirrincione, Daniela, Civitani, Marta, Cong, Min, Zelati, Francesco Coti, Cui, Weiwei, Cui, Tao, Cui, Wei, Dai, Boyu, Dauser, Thomas, De Angelis, Nicolas, De Marco, Barbara, De Rosa, Alessandra, Monte, Ettore Del, Cosimo, Sergio Di, Diebold, Sebastian, Dilillo, Giuseppe, Ding, Fei, Dohnal, Roman, Dong, Zefang, Donnarumma, Immacolata, Dovciak, Michal, Du, Yuanyuan, Ducci, Lorenzo, Evangelista, Yuri, Fan, Qingmei, Favre, Yannick, Ferrés, Patrícia, Fiandrini, Emanuele, Ficorella, Francesco, Fuschino, Fabio, Gálvez, José Luis, Gao, Na, Gao, Min, Ge, Yuqiang, Ge, Mingyu, Gevin, Olivier, Grassi, Marco, Gu, Yudong, Gu, Quanying, Guan, Ju, Guedel, Manuel, Han, Xingbo, Han, Dawei, He, Huilin, He, Junwang, Hedderman, Paul, den Herder, Jan Willem, Hong, Bin, Hormaetxe, Ander, Hou, Dongjie, Hu, Zexun, Hu, Hao, Hu, Qingbao, Hu, Yu, Huang, Yue, Huang, Jiangjiang, Huang, Qiushi, Huo, Jia, Hynek, Richard, Iwasawa, Kazumi, Izzo, Lucca, Ji, Long, Jia, Shumei, Jiang, Bowen, Jiang, Wei, Jiang, Jiechen, Jiang, Xiaowei, Jiao, Yang, Jin, Ge, Jin, Fan, Jose, Jordi, Karas, Vladimir, Kennedy, Thomas, Kirsch, Christian, Kole, Merlin, Komarek, Martin, Kreykenbohm, Ingo, Kuiper, Lucien, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Laubert, Phillip, Li, Tao, Li, Longhui, Li, Hong, Li, Duo, Li, Wei, Li, Maoshun, Li, Gang, Li, Xiaobo, Li, Chengkui, Li, Bing, Li, Haibo, Liang, Hong, Liao, Qiuyan, Liao, Jinyuan, Limousin, Olivier, Lin, Yanjian, Linares, Manuel, Liu, Rui, Liu, Yichen, Liu, Zhihao, Liu, Hongwei, Liu, Xiaojing, Liu, Xiaohua, Cicero, Ugo Lo, Loehring, Jens, Lombardi, Giovanni, Lorenz, Maximilian, Lu, Bing, Lucchesi, Leonardo, Luo, Tao, Luo, Laidan, Ma, Jia, Ma, Xiang, Macera, Daniele, Malcovati, Piero, Manfreda, Alberto, Paredes, Josep Maria, Marinucci, Andrea, Martindale, Adrian, Meidinger, Norbert, Mele, Filippo, Mendes, Vasco, Meng, Bin, Merkl, Martin, Meuris, Aline, Miniutti, Giovanni, Minuti, Massimo, Morbidini, Alfredo, Morgante, Gianluca, Muleri, Fabio, Munini, Riccardo, Mussolin, Lorenzo, Negri, Barbara, Nie, Jianyin, Novák, Petr, Nowosielski, Witold, Nuti, Alessio, Onat, Ahmet, Orleanski, Piotr, Orsini, Leonardo, Ottensamer, Roland, Ou, Ge, Pacciani, Luigi, Paltani, Stephane, Pan, Teng, Pan, Kai, Pareschi, Giovanni, Patruno, Alessandro, Pepponi, Giancarlo, Perinati, Emanuele, Piazzolla, Raffaele, Picciotto, Antonino, Piemonte, Claudio, Pinchera, Michele, Pliego, Samuel, Poutanen, Juri, Qi, Liqiang, Qi, Fazhi, Qiang, Pengfei, Qiao, Fangjian, Qiao, Zheng, Qiu, Xiangbiao, Qiu, Chengbo, Qu, Jinlu, Rachevski, Alexandre, Rashevskaia, Irina, Rea, Nanda, Ribo, Marc, de la Rie, Rob, Rodriguez, Jerome, Gil, Pablo Rodríguez, Sala, Gloria, Schanz, Thomas, Serafinelli, Roberto, Sgro, Carmelo, Shen, Zhengxiang, Sheng, Lizhi, Shi, Jingyan, Sironi, Giorgia, Skup, Konrad, Song, Liming, Song, Zeyu, Song, Jiangbo, Spandre, Gloria, Spiga, Daniele, Su, Yongquan, Sun, Liang, Sungur, Müberra, Svéda, Libor, Tagliaferri, Gianpiero, Tan, Ying, Tao, Lian, Tcherniak, Denis, Tenzer, Chris, Todaro, Michela, Tolos, Laura, Torok, Gabriel, Torres, Diego F., Trois, Alessio, Turhan, Onur, Uttley, Phil, Vacchi, Andrea, Virgilli, Enrico, Vogel, Channah, Walton, Dave, Wang, Jian, Wang, Xianqi, Wang, Bo, Wang, Langping, Wang, Xiaofeng, Wang, Dianlong, Wang, Yusa, Wang, Juan, Wang, Hao, Wang, Ruijie, Wang, Ping, Wang, Lingjun, Wang, Wenshuai, Wang, Tian, Wang, Haoyu, Wang, Zhanshan, Watts, Anna L., Wen, Xiangyang, Wilms, Jörn, Winter, Berend, Wu, Xin, Wu, Chao, Wu, Zhenyu, Wu, Qiong, Wu, Kaiji, Xiong, Hao, Xiong, Shaolin, Xu, Wei, Xu, Zhao, Xu, Jingjing, Xu, Xiongwei, Xue, Jiadai, Yan, Yongqing, Yan, Xingtao, Yang, Xianghui, Yang, Yanji, Yang, Xiongtao, Yang, Sheng, Yang, Jiawei, Yang, Yingquan, Yi, Shuxu, Yu, Yonggao, Yu, Ke, Zampa, Ganluigi, Zampa, Nicola, Zane, Silvia, Zdziarski, Andrzej A., Zhang, Long, Zhang, Shu, Zhang, Wenda, Zhang, Xiaoli, Zhang, Zhen, Zhang, Jiawei, Zhang, Fan, Zhang, Ziliang, Zhang, Dali, Zhang, Honglin, Zhang, Aimei, Zhang, Tong, Zhang, Hongmei, Zhang, Juan, Zhang, Liang, Zhang, Yueting, Zhao, Li, Zhao, Baosheng, Zhao, Zijian, Zhao, Xiaofan, Zhao, Haisheng, Zhao, Xiaoyun, Zheng, Shijie, Zhou, Yupeng, Zhou, Xiaohong, Zhu, Jiahuan, Zhu, Yuxuan, Zhu, Cheng, Zhu, Zhencai, Zorzi, Nicola, and Zwart, Frans
Abstract: The enhanced X-ray Timing and Polarimetry mission (eXTP) is a flagship observatory for X-ray timing, spectroscopy and polarimetry developed by an International Consortium. Thanks to its very large collecting area, good spectral resolution and unprecedented polarimetry capabilities, eXTP will explore the properties of matter and the propagation of light in the most extreme conditions found in the Universe. eXTP will, in addition, be a powerful X-ray observatory. The mission will continuously monitor the X-ray sky, and will enable multiwavelength and multi-messenger studies. The mission is currently in phase B, which will be completed in the middle of 2022.
Published: 2022

33. Quasi-periodic Oscillations of the X-Ray Burst from the Magnetar SGR J1935–2154 and Associated with the Fast Radio Burst FRB 200428

Author: Li, Xiaobo, primary, Ge, Mingyu, additional, Lin, Lin, additional, Zhang, Shuang-Nan, additional, Song, Liming, additional, Cao, Xuelei, additional, Zhang, Bing, additional, Lu, Fangjun, additional, Xu, Yupeng, additional, Xiong, Shaolin, additional, Tuo, Youli, additional, Tan, Ying, additional, Jiang, Weichun, additional, Qu, Jinlu, additional, Zhang, Shu, additional, Wang, Lingjun, additional, Wang, Jieshuang, additional, Zhang, Binbin, additional, Zhang, Peng, additional, Li, Chengkui, additional, Liu, Congzhan, additional, Li, Tipei, additional, Bu, Qingcui, additional, Cai, Ce, additional, Chen, Yong, additional, Chen, Yupeng, additional, Chang, Zhi, additional, Chen, Li, additional, Chen, Tianxiang, additional, Chen, Yibao, additional, Cui, Weiwei, additional, Du, Yuanyuan, additional, Gao, Guanhua, additional, Gao, He, additional, Gu, Yudong, additional, Guan, Ju, additional, Guo, Chengcheng, additional, Han, Dawei, additional, Huang, Yue, additional, Huo, Jia, additional, Jia, Shumei, additional, Jin, Jing, additional, Kong, Lingda, additional, Li, Bing, additional, Li, Gang, additional, Li, Wei, additional, Li, Xian, additional, Li, Xufang, additional, Li, Zhengwei, additional, Liang, Xiaohua, additional, Liao, Jinyuan, additional, Liu, Hexin, additional, Liu, Hongwei, additional, Liu, Xiaojing, additional, Lu, Xuefeng, additional, Luo, Qi, additional, Luo, Tao, additional, Ma, Binyuan, additional, Ma, Ruican, additional, Ma, Xiang, additional, Meng, Bin, additional, Nang, Yi, additional, Nie, Jianyin, additional, Ou, Ge, additional, Ren, Xiaoqin, additional, Sai, Na, additional, Song, Xinying, additional, Sun, Liang, additional, Tao, Lian, additional, Wang, Chen, additional, Wang, Pengju, additional, Wang, Wenshuai, additional, Wang, Yusa, additional, Wen, Xiangyang, additional, Wu, Bobing, additional, Wu, Baiyang, additional, Wu, Mei, additional, Xiao, Shuo, additional, Yang, Sheng, additional, Yang, Yanji, additional, Yi, Qibin, additional, Yin, Qianqing, additional, You, Yuan, additional, Yu, Wei, additional, Zhang, Fan, additional, Zhang, Hongmei, additional, Zhang, Juan, additional, Zhang, Wanchang, additional, Zhang, Wei, additional, Zhang, Yifei, additional, Zhang, Yuanhang, additional, Zhao, Haisheng, additional, Zhao, Xiaofan, additional, Zheng, Shijie, additional, and Zhou, Dengke, additional
Published: 2022
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34. In-orbit Timing Calibration of the Insight-Hard X-Ray Modulation Telescope

Author: Tuo, Youli, primary, Li, Xiaobo, additional, Ge, Mingyu, additional, Nie, Jianyin, additional, Song, Liming, additional, Xu, Yupeng, additional, Zheng, Shijie, additional, Lu, Fangjun, additional, Zhang, Shuang-Nan, additional, Liu, Congzhan, additional, Cao, Xuelei, additional, Chen, Yong, additional, Qu, Jinlu, additional, Zhang, Shu, additional, Zhao, Haisheng, additional, Xiao, Shuo, additional, Wu, Baiyang, additional, Wen, Xiangyang, additional, Jiang, Weichun, additional, Meng, Bin, additional, Cui, Weiwei, additional, Li, Wei, additional, Zhang, Yifei, additional, Li, Xufang, additional, Yang, Yanji, additional, Tan, Ying, additional, and Li, Bing, additional
Published: 2022
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35. A Significant Detection of X-ray Polarization in Sco X-1 with PolarLight and Constraints on the Corona Geometry

Author: Long, Xiangyun, primary, Feng, Hua, additional, Li, Hong, additional, Zhu, Jiahuan, additional, Wu, Qiong, additional, Huang, Jiahui, additional, Minuti, Massimo, additional, Jiang, Weichun, additional, Yang, Dongxin, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Ming, additional, An, Peng, additional, Jiang, Jiachen, additional, Costa, Enrico, additional, Baldini, Luca, additional, Bellazzini, Ronaldo, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgrò, Carmelo, additional, Spandre, Gloria, additional, Pinchera, Michele, additional, Muleri, Fabio, additional, and Soffitta, Paolo, additional
Published: 2022
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36. Discrimination of background events in the PolarLight X-ray polarimeter

Author: Zhu, Jiahuan, primary, Li, Hong, additional, Feng, Hua, additional, Huang, Jiahui, additional, Long, Xiangyun, additional, Wu, Qiong, additional, Jiang, Weichun, additional, Minuti, Massimo, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Yang, Dongxin, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Ming, additional, An, Peng, additional, Baldini, Luca, additional, Bellazzini, Ronaldo, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgrò, Carmelo, additional, Spandre, Gloria, additional, Pinchera, Michele, additional, Muleri, Fabio, additional, Soffitta, Paolo, additional, and Costa, Enrico, additional
Published: 2021
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37. X-Ray Polarimetry of the Crab Nebula with PolarLight: Polarization Recovery after the Glitch and a Secular Position Angle Variation

Author: Long, Xiangyun, primary, Feng, Hua, additional, Li, Hong, additional, Zhu, Jiahuan, additional, Wu, Qiong, additional, Huang, Jiahui, additional, Minuti, Massimo, additional, Jiang, Weichun, additional, Wang, Weihua, additional, Xu, Renxin, additional, Costa, Enrico, additional, Yang, Dongxin, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Ming, additional, An, Peng, additional, Baldini, Luca, additional, Bellazzini, Ronaldo, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgrò, Carmelo, additional, Spandre, Gloria, additional, Pinchera, Michele, additional, Muleri, Fabio, additional, and Soffitta, Paolo, additional
Published: 2021
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38. Modeling the in-orbit Background of PolarLight

Author: Huang, Jiahui, primary, Feng, Hua, additional, Li, Hong, additional, Long, Xiangyun, additional, Yang, Dongxin, additional, Zeng, Weihe, additional, Wu, Qiong, additional, Jiang, Weichun, additional, Minuti, Massimo, additional, Costa, Enrico, additional, Muleri, Fabio, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Zhi, additional, Zeng, Ming, additional, An, Peng, additional, Baldini, Luca, additional, Bellazzini, Ronaldo, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgrò, Carmelo, additional, Spandre, Gloria, additional, Pinchera, Michele, additional, and Soffitta, Paolo, additional
Published: 2021
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39. Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070

Author: You, Bei, primary, Tuo, Yuoli, additional, Li, Chengzhe, additional, Wang, Wei, additional, Zhang, Shuang-Nan, additional, Zhang, Shu, additional, Ge, Mingyu, additional, Luo, Chong, additional, Liu, Bifang, additional, Yuan, Weimin, additional, Dai, Zigao, additional, Liu, Jifeng, additional, Qiao, Erlin, additional, Jin, Chichuan, additional, Liu, Zhu, additional, Czerny, Bozena, additional, Wu, Qingwen, additional, Bu, Qingcui, additional, Cai, Ce, additional, Cao, Xuelei, additional, Chang, Zhi, additional, Chen, Gang, additional, Chen, Li, additional, Chen, Tianxiang, additional, Chen, Yibao, additional, Chen, Yong, additional, Chen, Yupeng, additional, Cui, Wei, additional, Cui, Weiwei, additional, Deng, Jingkang, additional, Dong, Yongwei, additional, Du, Yuanyuan, additional, Fu, Minxue, additional, Gao, Guanhua, additional, Gao, He, additional, Gao, Min, additional, Gu, Yudong, additional, Guan, Ju, additional, Guo, Chengcheng, additional, Han, Dawei, additional, Huang, Yue, additional, Huo, Jia, additional, Jia, Shumei, additional, Jiang, Luhua, additional, Jiang, Weichun, additional, Jin, Jing, additional, Jin, Yongjie, additional, Kong, Lingda, additional, Li, Bing, additional, Li, Chengkui, additional, Li, Gang, additional, Li, Maoshun, additional, Li, Tipei, additional, Li, Wei, additional, Li, Xian, additional, Li, Xiaobo, additional, Li, Xufang, additional, Li, Yanguo, additional, Li, Zhengwei, additional, Liang, Xiaohua, additional, Liao, Jinyuan, additional, Liu, Congzhan, additional, Liu, Guoqing, additional, Liu, Hongwei, additional, Liu, Xiaojing, additional, Liu, Yinong, additional, Lu, Bo, additional, Lu, Fangjun, additional, Lu, Xuefeng, additional, Luo, Qi, additional, Luo, Tao, additional, Ma, Xiang, additional, Meng, Bin, additional, Nang, Yi, additional, Nie, Jianyin, additional, Ou, Ge, additional, Qu, Jinlu, additional, Sai, Na, additional, Shang, Rencheng, additional, Song, Liming, additional, Song, Xinying, additional, Sun, Liang, additional, Tan, Ying, additional, Tao, Lian, additional, Wang, Chen, additional, Wang, Guofeng, additional, Wang, Juan, additional, Wang, Lingjun, additional, Wang, Wenshuai, additional, Wang, Yusa, additional, Wen, Xiangyang, additional, Wu, Baiyang, additional, Wu, Bobing, additional, Wu, Mei, additional, Xiao, Guangcheng, additional, Xiao, Shuo, additional, Xiong, Shaolin, additional, Xu, Yupeng, additional, Yang, Jiawei, additional, Yang, Sheng, additional, Yang, Yanji, additional, Yi, Qibin, additional, Yin, Qianqing, additional, You, Yuan, additional, Zhang, Aimei, additional, Zhang, Chengmo, additional, Zhang, Fan, additional, Zhang, Hongmei, additional, Zhang, Juan, additional, Zhang, Tong, additional, Zhang, Wanchang, additional, Zhang, Wei, additional, Zhang, Wenzhao, additional, Zhang, Yi, additional, Zhang, Yifei, additional, Zhang, Yongjie, additional, Zhang, Yue, additional, Zhang, Zhao, additional, Zhang, Ziliang, additional, Zhao, Haisheng, additional, Zhao, Xiaofan, additional, Zheng, Shijie, additional, Zhou, Dengke, additional, Zhou, Jianfeng, additional, Zhu, Yuxuan, additional, and Zhu, Yue, additional
Published: 2021
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40. Identification of a non-thermal X-ray burst with the Galactic magnetar SGR J1935+2154 and a fast radio burst using Insight-HXMT

Author: Li, C.K., primary, Lin, Lin, additional, Xiong, S.L., additional, Ge, Mingyu, additional, Li, X.B., additional, Li, Tipei, additional, Lu, F.J., additional, Zhang, Shuang-Nan, additional, Tuo, Y.L., additional, Nang, Y., additional, Zhang, B., additional, Xiao, S., additional, Chen, Y., additional, Song, L.M., additional, Xu, Y.P., additional, Liu, C.Z., additional, Jia, S.M., additional, Cao, X.L., additional, Qu, J.L., additional, Zhang, Shu, additional, Gu, Y.D., additional, Liao, J.Y., additional, Zhao, X.F., additional, Tan, Y., additional, Nie, J.Y., additional, Zhao, H.S., additional, Zheng, S.J., additional, Zheng, Y.G., additional, Luo, Qi, additional, Cai, C., additional, Li, B., additional, Xue, W.C., additional, Bu, Qingcui, additional, Chang, Zhi, additional, Chen, G., additional, Chen, T.X., additional, Chen, Yu-Peng, additional, Dong, Yong-Wei, additional, Du, Y.Y., additional, Gao, H., additional, Gao, G.H., additional, Gao, M., additional, Huo, J., additional, Han, D.W., additional, Jiang, L.H., additional, Huang, Y., additional, Jiang, Weichun, additional, Jin, J., additional, Kong, L.D., additional, Li, Gang, additional, Guan, J., additional, Li, M.S., additional, Li, W., additional, Li, X., additional, Li, X.F., additional, Li, Y.G., additional, Li, Z.W., additional, Liang, X.H., additional, Liu, B.S., additional, Liu, H.W., additional, Liu, X.J., additional, Lu, B., additional, Lu, X.F., additional, Luo, T., additional, Ma, X., additional, Meng, B., additional, Ou, G., additional, Sai, N., additional, Song, X.Y., additional, Sun, L., additional, Tao, Lian, additional, Wang, J., additional, Wang, G.F., additional, Wang, W.S., additional, Wang, Y.S., additional, Wen, X.Y., additional, Wu, B.B., additional, Wu, B.Y., additional, Wu, M., additional, Xiao, G.C., additional, Xu, H., additional, Yang, J.W., additional, Yang, S., additional, Yang, Yi-Jung, additional, Yang, Y.J., additional, Yi, Q.B., additional, Yin, Q.Q., additional, You, Y., additional, Zhang, C.M., additional, Zhang, A.M., additional, Zhang, F., additional, Zhang, H.M., additional, Zhang, J., additional, Zhang, T., additional, Zhang, Wei, additional, Zhang, W.C., additional, Zhang, Y., additional, Zhang, Yue, additional, Zhang, Y.F., additional, Zhang, Y.J., additional, Zhang, Z.L., additional, Zhou, D.K., additional, Zhu, Y., additional, Zhu, Y.X., additional, Chen, L., additional, Zhang, W.Z., additional, Chen, Y.B., additional, Cui, W., additional, Deng, J.K., additional, Fu, M.X., additional, Jin, Y.J., additional, Liu, G.Q., additional, Liu, Y.N., additional, Shang, R.C., additional, Zhang, Zhao, additional, Zhang, Zhi, additional, Zhou, J.F., additional, Wang, C., additional, Guo, C.C., additional, and Zhuang, R.L., additional
Published: 2020
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41. Author Correction: Re-detection and a possible time variation of soft X-ray polarization from the Crab

Author: Feng, Hua, primary, Li, Hong, additional, Long, Xiangyun, additional, Bellazzini, Ronaldo, additional, Costa, Enrico, additional, Wu, Qiong, additional, Huang, Jiahui, additional, Jiang, Weichun, additional, Minuti, Massimo, additional, Wang, Weihua, additional, Xu, Renxin, additional, Yang, Dongxin, additional, Baldini, Luca, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Soffitta, Paolo, additional, Muleri, Fabio, additional, Jung, Aera, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Ming, additional, An, Peng, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgro, Carmelo, additional, Spandre, Gloria, additional, and Pinchera, Michele, additional
Published: 2020
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42. Re-detection and a possible time variation of soft X-ray polarization from the Crab

Author: Feng, Hua, primary, Li, Hong, additional, Long, Xiangyun, additional, Bellazzini, Ronaldo, additional, Costa, Enrico, additional, Wu, Qiong, additional, Huang, Jiahui, additional, Jiang, Weichun, additional, Minuti, Massimo, additional, Wang, Weihua, additional, Xu, Renxin, additional, Yang, Dongxin, additional, Baldini, Luca, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Soffitta, Paolo, additional, Muleri, Fabio, additional, Jung, Aera, additional, Yu, Jiandong, additional, Jin, Ge, additional, Zeng, Ming, additional, An, Peng, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgro, Carmelo, additional, Spandre, Gloria, additional, and Pinchera, Michele, additional
Published: 2020
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43. Enhanced X-ray Timing and Polarimetry mission: eXTP: an update on its scientific cases, mission profile and development status

Author: den Herder, Jan-Willem A., Nikzad, Shouleh, Nakazawa, Kazuhiro, Zhang, Shuang-Nan, Santangelo, Andrea, Xu, Yupeng, Feroci, Marco, Hernanz, Margarita, Lu, Fangjun, Chen, Yong, Feng, Hua, Nandra, Kirpal, Jiang, Weichun, Svoboda, Jiri, Brandt, Søren, Schanne, Stéphane, in't Zand, Jean, Michalska, Malgosia, Bozzo, Enrico, Kalemci, Emrah, Agudo, Ivan, Ahangarianabhari, Mahdi, Aitink-Kroes, Gabby, An, Zhenghua, Cao, Jiewei, Cao, Xuelei, Chen, Tianxiang, Chen, Can, Chen, Yupeng, Cheng, Yaodong, Cong, Min, Cui, Weiwei, Cui, Tao, Wu, Zhenyu, Liu, Yichen, Su, Yongquan, Wang, Jian, Zhang, Zhen, Jin, Ge, Li, Longhui, Qiu, Xiangbiao, Lin, Yanjian, Li, Tao, Zhang, Jiawei, Wu, Chao, Xu, Wei, Hu, Zexun, Xu, Zhao, Qiao, Fangjian, Pan, Kai, Zhang, Shu, Song, Liming, He, Huilin, Zhang, Fan, Liu, Hongwei, Liu, Xiaojing, Yang, Yanji, Song, Zeyu, Zhang, Jiawei, Yu, Ke, Wang, Yusa, Li, Wei, Han, Dawei, Wang, Juan, Zhang, Ziliang, Wang, Hao, Zhang, Dali, Gao, Min, Ma, Jia, Huo, Jia, Li, Maoshun, Hou, Dongjie, Yang, Xiongtao, Zhao, Zijian, Zhao, Xiaofan, Xu, Jingjing, Luo, Laidan, Zhu, Yuxuan, Zhang, Honglin, Liu, Xiaohua, Gu, Yudong, Du, Yuanyuan, Yang, Sheng, Sun, Liang, Jiang, Jiechen, Yang, Jiawei, Dong, Zefang, Dai, Boyu, Jiao, Yang, Wen, Xiangyang, Meng, Bin, Zhang, Aimei, Wang, Ruijie, Zhang, Tong, Lu, Bing, Gao, Na, Xu, Xiongwei, Luo, Tao, Qi, Liqiang, Li, Gang, Qu, Jinlu, Xiong, Shaolin, Tao, Liao, Jia, Shumei, Ge, Mingyu, Zheng, Shijie, Li, Xiaobo, Ma, Xiang, Huang, Yue, Li, Chengkui, Nie, Jianyin, Zhao, Haisheng, Guan, Ju, Liao, Jinyuan, Zhang, Hongmei, Zhang, Juan, Wang, Ping, Zhao, Xiaoyun, Wang, Lingjun, Zhang, Liang, Yi, Shuxu, Li, Bing, Tan, Ying, Qi, Fazhi, Wang, Wenshuai, Ou, Ge, Hu, Hao, Shi, Jingyan, Hu, Qingbao, Jiang, Xiaowei, Li, Haibo, Hu, Yu, Jiang, Bowen, Tenzer, Chris, Perinati, Emanuele, and Pliego, Samuel
Published: 2022
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44. PolarLight: a CubeSat X-ray polarimeter based on the gas pixel detector

Author: Feng, Hua, primary, Jiang, Weichun, additional, Minuti, Massimo, additional, Wu, Qiong, additional, Jung, Aera, additional, Yang, Dongxin, additional, Citraro, Saverio, additional, Nasimi, Hikmat, additional, Yu, Jiandong, additional, Jin, Ge, additional, Huang, Jiahui, additional, Zeng, Ming, additional, An, Peng, additional, Baldini, Luca, additional, Bellazzini, Ronaldo, additional, Brez, Alessandro, additional, Latronico, Luca, additional, Sgrò, Carmelo, additional, Spandre, Gloria, additional, Pinchera, Michele, additional, Muleri, Fabio, additional, Soffitta, Paolo, additional, and Costa, Enrico, additional
Published: 2019
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45. The enhanced X-ray Timing and Polarimetry mission—eXTP

Author: Zhang, ShuangNan, primary, Santangelo, Andrea, additional, Feroci, Marco, additional, Xu, YuPeng, additional, Lu, FangJun, additional, Chen, Yong, additional, Feng, Hua, additional, Zhang, Shu, additional, Brandt, Søren, additional, Hernanz, Margarita, additional, Baldini, Luca, additional, Bozzo, Enrico, additional, Campana, Riccardo, additional, De Rosa, Alessandra, additional, Dong, YongWei, additional, Evangelista, Yuri, additional, Karas, Vladimir, additional, Meidinger, Norbert, additional, Meuris, Aline, additional, Nandra, Kirpal, additional, Pan, Teng, additional, Pareschi, Giovanni, additional, Orleanski, Piotr, additional, Huang, QiuShi, additional, Schanne, Stephane, additional, Sironi, Giorgia, additional, Spiga, Daniele, additional, Svoboda, Jiri, additional, Tagliaferri, Gianpiero, additional, Tenzer, Christoph, additional, Vacchi, Andrea, additional, Zane, Silvia, additional, Walton, Dave, additional, Wang, ZhanShan, additional, Winter, Berend, additional, Wu, Xin, additional, in’ t Zand, Jean J. M., additional, Ahangarianabhari, Mahdi, additional, Ambrosi, Giovanni, additional, Ambrosino, Filippo, additional, Barbera, Marco, additional, Basso, Stefano, additional, Bayer, Jörg, additional, Bellazzini, Ronaldo, additional, Bellutti, Pierluigi, additional, Bertucci, Bruna, additional, Bertuccio, Giuseppe, additional, Borghi, Giacomo, additional, Cao, XueLei, additional, Cadoux, Franck, additional, Ceraudo, Francesco, additional, Chen, TianXiang, additional, Chen, YuPeng, additional, Chevenez, Jerome, additional, Civitani, Marta, additional, Cui, Wei, additional, Cui, WeiWei, additional, Dauser, Thomas, additional, Del Monte, Ettore, additional, Di Cosimo, Sergio, additional, Diebold, Sebastian, additional, Doroshenko, Victor, additional, Dovciak, Michal, additional, Du, YuanYuan, additional, Ducci, Lorenzo, additional, Fan, QingMei, additional, Favre, Yannick, additional, Fuschino, Fabio, additional, Gálvez, José Luis, additional, Gao, Min, additional, Ge, MingYu, additional, Gevin, Olivier, additional, Grassi, Marco, additional, Gu, QuanYing, additional, Gu, YuDong, additional, Han, DaWei, additional, Hong, Bin, additional, Hu, Wei, additional, Ji, Long, additional, Jia, ShuMei, additional, Jiang, WeiChun, additional, Kennedy, Thomas, additional, Kreykenbohm, Ingo, additional, Kuvvetli, Irfan, additional, Labanti, Claudio, additional, Latronico, Luca, additional, Li, Gang, additional, Li, MaoShun, additional, Li, Xian, additional, Li, Wei, additional, Li, ZhengWei, additional, Limousin, Olivier, additional, Liu, HongWei, additional, Liu, XiaoJing, additional, Lu, Bo, additional, Luo, Tao, additional, Macera, Daniele, additional, Malcovati, Piero, additional, Martindale, Adrian, additional, Michalska, Malgorzata, additional, Meng, Bin, additional, Minuti, Massimo, additional, Morbidini, Alfredo, additional, Muleri, Fabio, additional, Paltani, Stephane, additional, Perinati, Emanuele, additional, Picciotto, Antonino, additional, Piemonte, Claudio, additional, Qu, JinLu, additional, Rachevski, Alexandre, additional, Rashevskaya, Irina, additional, Rodriguez, Jerome, additional, Schanz, Thomas, additional, Shen, ZhengXiang, additional, Sheng, LiZhi, additional, Song, JiangBo, additional, Song, LiMing, additional, Sgro, Carmelo, additional, Sun, Liang, additional, Tan, Ying, additional, Uttley, Phil, additional, Wang, Bo, additional, Wang, DianLong, additional, Wang, GuoFeng, additional, Wang, Juan, additional, Wang, LangPing, additional, Wang, YuSa, additional, Watts, Anna L., additional, Wen, XiangYang, additional, Wilms, Jörn, additional, Xiong, ShaoLin, additional, Yang, JiaWei, additional, Yang, Sheng, additional, Yang, YanJi, additional, Yu, Nian, additional, Zhang, WenDa, additional, Zampa, Gianluigi, additional, Zampa, Nicola, additional, Zdziarski, Andrzej A., additional, Zhang, AiMei, additional, Zhang, ChengMo, additional, Zhang, Fan, additional, Zhang, Long, additional, Zhang, Tong, additional, Zhang, Yi, additional, Zhang, XiaoLi, additional, Zhang, ZiLiang, additional, Zhao, BaoSheng, additional, Zheng, ShiJie, additional, Zhou, YuPeng, additional, Zorzi, Nicola, additional, and Zwart, J. Frans, additional
Published: 2018
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46. The enhanced X-ray Timing and Polarimetry mission—eXTP

Author: Zhang, ShuangNan, Santangelo, Andrea, Feroci, Marco, Xu, YuPeng, Lu, FangJun, Chen, Yong, Feng, Hua, Zhang, Shu, Brandt, Søren, Hernanz, Margarita, Baldini, Luca, Bozzo, Enrico, Campana, Riccardo, Rosa, Alessandra, Dong, YongWei, Evangelista, Yuri, Karas, Vladimir, Meidinger, Norbert, Meuris, Aline, Nandra, Kirpal, Pan, Teng, Pareschi, Giovanni, Orleanski, Piotr, Huang, QiuShi, Schanne, Stephane, Sironi, Giorgia, Spiga, Daniele, Svoboda, Jiri, Tagliaferri, Gianpiero, Tenzer, Christoph, Vacchi, Andrea, Zane, Silvia, Walton, Dave, Wang, ZhanShan, Winter, Berend, Wu, Xin, in’ t Zand, Jean, Ahangarianabhari, Mahdi, Ambrosi, Giovanni, Ambrosino, Filippo, Barbera, Marco, Basso, Stefano, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Borghi, Giacomo, Cao, XueLei, Cadoux, Franck, Campana, Riccardo, Ceraudo, Francesco, Chen, TianXiang, Chen, YuPeng, Chevenez, Jerome, Civitani, Marta, Cui, Wei, Cui, WeiWei, Dauser, Thomas, Monte, Ettore, Cosimo, Sergio, Diebold, Sebastian, Doroshenko, Victor, Dovciak, Michal, Du, YuanYuan, Ducci, Lorenzo, Fan, QingMei, Favre, Yannick, Fuschino, Fabio, Gálvez, José, Gao, Min, Ge, MingYu, Gevin, Olivier, Grassi, Marco, Gu, QuanYing, Gu, YuDong, Han, DaWei, Hong, Bin, Hu, Wei, Ji, Long, Jia, ShuMei, Jiang, WeiChun, Kennedy, Thomas, Kreykenbohm, Ingo, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Li, Gang, Li, MaoShun, Li, Xian, Li, Wei, Li, ZhengWei, Limousin, Olivier, Liu, HongWei, Liu, XiaoJing, Lu, Bo, Luo, Tao, Macera, Daniele, Malcovati, Piero, Martindale, Adrian, Michalska, Malgorzata, Meng, Bin, Minuti, Massimo, Morbidini, Alfredo, Muleri, Fabio, Paltani, Stephane, Perinati, Emanuele, Picciotto, Antonino, Piemonte, Claudio, Qu, JinLu, Rachevski, Alexandre, Rashevskaya, Irina, Rodriguez, Jerome, Schanz, Thomas, Shen, ZhengXiang, Sheng, LiZhi, Song, JiangBo, Song, LiMing, Sgro, Carmelo, Sun, Liang, Tan, Ying, Uttley, Phil, Wang, Bo, Wang, DianLong, Wang, GuoFeng, Wang, Juan, Wang, LangPing, Wang, YuSa, Watts, Anna, Wen, XiangYang, Wilms, Jörn, Xiong, ShaoLin, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Yu, Nian, Zhang, WenDa, Zampa, Gianluigi, Zampa, Nicola, Zdziarski, Andrzej, Zhang, AiMei, Zhang, ChengMo, Zhang, Fan, Zhang, Long, Zhang, Tong, Zhang, Yi, Zhang, XiaoLi, Zhang, ZiLiang, Zhao, BaoSheng, Zheng, ShiJie, Zhou, YuPeng, Zorzi, Nicola, and Zwart, J.
Abstract: In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources. The paper provides a detailed description of: (1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload; (2) the elements and functions of the mission, from the spacecraft to the ground segment.
Published: 2019
Full Text: View/download PDF

47. Insight-HXMT observations of the first binary neutron star merger GW170817

Author: Li, TiPei, Xiong, ShaoLin, Zhang, ShuangNan, Lu, FangJun, Song, LiMing, Cao, XueLei, Chang, Zhi, Chen, Gang, Chen, Li, Chen, TianXiang, Chen, Yong, Chen, YiBao, Chen, YuPeng, Cui, Wei, Cui, WeiWei, Deng, JingKang, Dong, YongWei, Du, YuanYuan, Fu, MinXue, Gao, GuanHua, Gao, He, Gao, Min, Ge, MingYu, Gu, YuDong, Guan, Ju, Guo, ChengCheng, Han, DaWei, Hu, Wei, Huang, Yue, Huo, Jia, Jia, ShuMei, Jiang, LuHua, Jiang, WeiChun, Jin, Jing, Jin, YongJie, Li, Bing, Li, ChengKui, Li, Gang, Li, MaoShun, Li, Wei, Li, Xian, Li, XiaoBo, Li, XuFang, Li, YanGuo, Li, ZiJian, Li, ZhengWei, Liang, XiaoHua, Liao, JinYuan, Liu, CongZhan, Liu, GuoQing, Liu, HongWei, Liu, ShaoZhen, Liu, XiaoJing, Liu, Yuan, Liu, YiNong, Lu, Bo, Lu, XueFeng, Luo, Tao, Ma, Xiang, Meng, Bin, Nang, Yi, Nie, JianYin, Ou, Ge, Qu, JinLu, Sai, Na, Sun, Liang, Tan, Yin, Tao, Lian, Tao, WenHui, Tuo, YouLi, Wang, GuoFeng, Wang, HuanYu, Wang, Juan, Wang, WenShuai, Wang, YuSa, Wen, XiangYang, Wu, BoBing, Wu, Mei, Xiao, GuangCheng, Xu, He, Xu, YuPeng, Yan, LinLi, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Zhang, AiMei, Zhang, ChunLei, Zhang, ChengMo, Zhang, Fan, Zhang, HongMei, Zhang, Juan, Zhang, Qiang, Zhang, Shu, Zhang, Tong, Zhang, Wei, Zhang, WanChang, Zhang, WenZhao, Zhang, Yi, Zhang, Yue, Zhang, YiFei, Zhang, YongJie, Zhang, Zhao, Zhang, ZiLiang, Zhao, HaiSheng, Zhao, JianLing, Zhao, XiaoFan, Zheng, ShiJie, Zhu, Yue, Zhu, YuXuan, and Zou, ChangLin
Abstract: Finding the electromagnetic (EM) counterpart of binary compact star merger, especially the binary neutron star (BNS) merger, is critically important for gravitational wave (GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017, Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart, GRB 170817A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope (HE) onboard Insight-HXMT (Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart (SSS17a/AT2017gfo) with very large collection area (~1000 cm2) and microsecond time resolution in 0.2-5 MeV. In addition, Insight-HXMT quickly implemented a Target of Opportunity (ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy (0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817A. Meanwhile, Insight-HXMT/HE provides one of the most stringent constraints (~10‒7to 10‒6erg/cm2/s) for both GRB170817A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event.
Published: 2018
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48. Enhanced X-ray Timing and Polarimetry mission: eXTP: an update on its scientific cases, mission profile and development status.

Author: Zhang, Shuang-Nan, Santangelo, Andrea, Xu, Yupeng, Feroci, Marco, Hernanz, Margarita, Lu, Fangjun, Chen, Yong, Feng, Hua, Nandra, Kirpal, Jiang, Weichun, Svoboda, Jiri, Brandt, Søren, Schanne, Stéphane, in't Zand, Jean, Michalska, Malgosia, Bozzo, Enrico, Kalemci, Emrah, Agudo, Ivan, Ahangarianabhari, Mahdi, and Aitink-Kroes, Gabby
Published: 2022
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49. Synthesis and characterization of styrene/maleimide copolymer with 4-[N-ethyl-N-(2-hydroxyethyl) amino]-4′-nitroazobenzene as side chain

Author: Pu, Hongting, primary, Liu, Ling, additional, Jiang, Weichun, additional, Li, Xinwan, additional, and Chen, Jianping, additional
Published: 2008
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50. The enhanced X-ray Timing and Polarimetry mission—eXTP

Author: ShuangNan Zhang, Andrea Santangelo, Marco Feroci, YuPeng Xu, FangJun Lu, Yong Chen, Hua Feng, Shu Zhang, Søren Brandt, Margarita Hernanz, Luca Baldini, Enrico Bozzo, Riccardo Campana, Alessandra De Rosa, YongWei Dong, Yuri Evangelista, Vladimir Karas, Norbert Meidinger, Aline Meuris, Kirpal Nandra, Teng Pan, Giovanni Pareschi, Piotr Orleanski, QiuShi Huang, Stephane Schanne, Giorgia Sironi, Daniele Spiga, Jiri Svoboda, Gianpiero Tagliaferri, Christoph Tenzer, Andrea Vacchi, Silvia Zane, Dave Walton, ZhanShan Wang, Berend Winter, Xin Wu, Jean J. M. in’ t Zand, Mahdi Ahangarianabhari, Giovanni Ambrosi, Filippo Ambrosino, Marco Barbera, Stefano Basso, Jörg Bayer, Ronaldo Bellazzini, Pierluigi Bellutti, Bruna Bertucci, Giuseppe Bertuccio, Giacomo Borghi, XueLei Cao, Franck Cadoux, Francesco Ceraudo, TianXiang Chen, YuPeng Chen, Jerome Chevenez, Marta Civitani, Wei Cui, WeiWei Cui, Thomas Dauser, Ettore Del Monte, Sergio Di Cosimo, Sebastian Diebold, Victor Doroshenko, Michal Dovciak, YuanYuan Du, Lorenzo Ducci, QingMei Fan, Yannick Favre, Fabio Fuschino, José Luis Gálvez, Min Gao, MingYu Ge, Olivier Gevin, Marco Grassi, QuanYing Gu, YuDong Gu, DaWei Han, Bin Hong, Wei Hu, Long Ji, ShuMei Jia, WeiChun Jiang, Thomas Kennedy, Ingo Kreykenbohm, Irfan Kuvvetli, Claudio Labanti, Luca Latronico, Gang Li, MaoShun Li, Xian Li, Wei Li, ZhengWei Li, Olivier Limousin, HongWei Liu, XiaoJing Liu, Bo Lu, Tao Luo, Daniele Macera, Piero Malcovati, Adrian Martindale, Malgorzata Michalska, Bin Meng, Massimo Minuti, Alfredo Morbidini, Fabio Muleri, Stephane Paltani, Emanuele Perinati, Antonino Picciotto, Claudio Piemonte, JinLu Qu, Alexandre Rachevski, Irina Rashevskaya, Jerome Rodriguez, Thomas Schanz, ZhengXiang Shen, LiZhi Sheng, JiangBo Song, LiMing Song, Carmelo Sgro, Liang Sun, Ying Tan, Phil Uttley, Bo Wang, DianLong Wang, GuoFeng Wang, Juan Wang, LangPing Wang, YuSa Wang, Anna L. Watts, XiangYang Wen, Jörn Wilms, ShaoLin Xiong, JiaWei Yang, Sheng Yang, YanJi Yang, Nian Yu, WenDa Zhang, Gianluigi Zampa, Nicola Zampa, Andrzej A. Zdziarski, AiMei Zhang, ChengMo Zhang, Fan Zhang, Long Zhang, Tong Zhang, Yi Zhang, XiaoLi Zhang, ZiLiang Zhang, BaoSheng Zhao, ShiJie Zheng, YuPeng Zhou, Nicola Zorzi, J. Frans Zwart, ITA, GBR, FRA, DEU, ESP, DNK, POL, CZE, CHN, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, eXTP, Zhang, ShuangNan, Santangelo, Andrea, Feroci, Marco, Xu, YuPeng, Lu, FangJun, Chen, Yong, Feng, Hua, Zhang, Shu, Brandt, Søren, Hernanz, Margarita, Baldini, Luca, Bozzo, Enrico, Campana, Riccardo, De Rosa, Alessandra, Dong, YongWei, Evangelista, Yuri, Karas, Vladimir, Meidinger, Norbert, Meuris, Aline, Nandra, Kirpal, Pan, Teng, Pareschi, Giovanni, Orleanski, Piotr, Huang, QiuShi, Schanne, Stephane, Sironi, Giorgia, Spiga, Daniele, Svoboda, Jiri, Tagliaferri, Gianpiero, Tenzer, Christoph, Vacchi, Andrea, Zane, Silvia, Walton, Dave, Wang, ZhanShan, Winter, Berend, Wu, Xin, in’ t Zand, Jean J. M., Ahangarianabhari, Mahdi, Ambrosi, Giovanni, Ambrosino, Filippo, Barbera, Marco, Basso, Stefano, Bayer, Jörg, Bellazzini, Ronaldo, Bellutti, Pierluigi, Bertucci, Bruna, Bertuccio, Giuseppe, Borghi, Giacomo, Cao, XueLei, Cadoux, Franck, Ceraudo, Francesco, Chen, TianXiang, Chen, YuPeng, Chevenez, Jerome, Civitani, Marta, Cui, Wei, Cui, WeiWei, Dauser, Thoma, Del Monte, Ettore, Di Cosimo, Sergio, Diebold, Sebastian, Doroshenko, Victor, Dovciak, Michal, Du, YuanYuan, Ducci, Lorenzo, Fan, QingMei, Favre, Yannick, Fuschino, Fabio, Gálvez, José Lui, Gao, Min, Ge, MingYu, Gevin, Olivier, Grassi, Marco, Gu, QuanYing, Gu, YuDong, Han, DaWei, Hong, Bin, Hu, Wei, Ji, Long, Jia, ShuMei, Jiang, WeiChun, Kennedy, Thoma, Kreykenbohm, Ingo, Kuvvetli, Irfan, Labanti, Claudio, Latronico, Luca, Li, Gang, Li, MaoShun, Li, Xian, Li, Wei, Li, ZhengWei, Limousin, Olivier, Liu, HongWei, Liu, XiaoJing, Lu, Bo, Luo, Tao, Macera, Daniele, Malcovati, Piero, Martindale, Adrian, Michalska, Malgorzata, Meng, Bin, Minuti, Massimo, Morbidini, Alfredo, Muleri, Fabio, Paltani, Stephane, Perinati, Emanuele, Picciotto, Antonino, Piemonte, Claudio, Qu, JinLu, Rachevski, Alexandre, Rashevskaya, Irina, Rodriguez, Jerome, Schanz, Thoma, Shen, ZhengXiang, Sheng, LiZhi, Song, JiangBo, Song, LiMing, Sgro, Carmelo, Sun, Liang, Tan, Ying, Uttley, Phil, Wang, Bo, Wang, DianLong, Wang, GuoFeng, Wang, Juan, Wang, LangPing, Wang, YuSa, Watts, Anna L., Wen, XiangYang, Wilms, Jörn, Xiong, ShaoLin, Yang, JiaWei, Yang, Sheng, Yang, YanJi, Yu, Nian, Zhang, WenDa, Zampa, Gianluigi, Zampa, Nicola, Zdziarski, Andrzej A., Zhang, AiMei, Zhang, ChengMo, Zhang, Fan, Zhang, Long, Zhang, Tong, Zhang, Yi, Zhang, XiaoLi, Zhang, ZiLiang, Zhao, BaoSheng, Zheng, ShiJie, Zhou, YuPeng, Zorzi, Nicola, Zwart, J. Frans, and High Energy Astrophys. & Astropart. Phys (API, FNWI)
Subjects: Gravity (chemistry), Computer science, space mission: eXTP, X-ray timing, Polarimetry, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, Physics and Astronomy (all), Settore FIS/05 - Astronomia E Astrofisica, Observatory, X-ray instrumentation, 0103 physical sciences, X-ray polarimetry, Ground segment, Aerospace engineering, 010306 general physics, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), High Energy Astrophysical Phenomena (astro-ph.HE), Spacecraft, sezele, business.industry, Payload, Gravitational wave, Astrophysics::Instrumentation and Methods for Astrophysics, Space Science, business, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: In this paper we present the enhanced X-ray Timing and Polarimetry mission - eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources. The paper provides a detailed description of: (1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload; (2) the elements and functions of the mission, from the spacecraft to the ground segment., Accepted for publication on Sci. China Phys. Mech. Astron. (2019)
Published: 2019

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