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Radiation-induced cross-linking:a novel avenue to permanent 3D modification of polymeric membranes

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Nuclear Science and Techniques 2021年第7期32卷 31-45页

作者： yu gu bo-Wu Zhang Zhen guo Ji-Hao li ming yu lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials College of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China University of Chinese Academy of Sciences Beijing 100049China

Membrane fouling is always the biggest problem in the practice of membrane separation technologies,which strongly impacts their applicability,separation efficiency,cost effectiveness,and service ***,a simple but effective 3D modification approach was designed for permanently functionalizing polymeric membranes by directly cross-linking polyvinyl alcohol(PVA)under gamma-ray irradiation at room temperature without any *** the modification,a PVA layer was constructed on the membrane surface and the pore inner surface of polyvinylidene fluoride(PVDF)*** endowed them with good hydrophilicity,low adsorption of protein model foulants,and easy recoverability *** addition,the pore size and distribution were customized by controlling the PVA concentration,which enhanced the rejection ability of the resultant membranes and converted them from microfiltration to *** crosslinked PVA layer was equipped with the resultant membranes with good resistance to chemical cleaning by acidic,alkaline,and oxidative reagents,which could greatly prolong the membrane service ***,this approach was demonstrated as a universal method to modify PVDF membranes with other hydrophilic macromolecular modifiers,including polyethylene glycol,sodium alginate,and polyvinyl *** modification of the membranes effectively endowed them with good hydrophilicity and antifouling properties,as expected.

关键词： Ultrafiltration membrane Antifouling 3D modification Gamma-ray Cross-linking

Stability study of Disperse Blue 79 under ionizing radiation

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Nuclear Science and Techniques 2020年第2期31卷 113-123页

作者： xiao-Jun Ding ming yu Xin Zheng Cui-Cui Ye yu gu Man-li Lu bo-Wu Zhang lin-fan li Jing-Ye li Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China The Education Ministry Key Lab of Resource Chemistry Shanghai Key Lab of Rare Earth Functional MaterialsCollege of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China

Ionizing radiation is a promising method for dye degradation or textile coloration using commercial azo dyes and small molecular weight organic dyes. Thus, the stability of the molecular structure of an azo dye is important under ionizing radiation. Disperse Blue 79, as an example azo dyes, was irradiated with gamma rays or electron beam (EB) to investigate the radiation-induced effects on the molecular structure. Ultraviolet visible spectroscopy (UV Vis), nuclear magnetic resonance (NMR) spectra analysis, and mass spectrometry (MS) studies indicated that acetoxy and methoxyl were easily cleaved on the irradiation of the aqueous dye solution but retained a stable structure on the irradiation of the powder form. Gamma rays and EB showed similar effects on the decomposition process. Chromaticity changes using the Lab* method showed that the dye turned to dark yellow and the value of b* of the irradiated dyes increased with the increasing absorbed dose, which indicated that Disperse Blue 79 could be partly decomposed in an aqueous solution This work was nancially supported by the National Natural Science Foundation of China (Nos. 11875313, 11605274, and 11575277). xiao-Jun Ding and ming yu contributed equally to this work. & Jing-Ye li jyli@*** 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Lab of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China with an absorbed dose of 10 kGy. Furthermore, the results demonstrated that the chemical stability of the Disperse Blue 79 under ionizing radiation are different in its powder form with the dye in the aqueous solution.

关键词： Azo dyes Disperse Blue 79 Stability

Enhanced thermoelectric performance of Cu_(2)SnSe_(3) via synergistic effects of Cd-doping and CuGaTe_(2) alloying

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Rare Metals 2022年第10期41卷 3466-3474页

作者： Yi-Jing fan Kun-ling Peng yu-ling Huang Hui-Jun liao Zheng-Yong Huang Jian li Yan-Ci Yan Hao-shuang gu Bin Zhang Yong-ming Hu Xu Lu xiao-yuan Zhou Faculty of Physics and Electronic Sciences Hubei Key Laboratory of Ferro and Piezoelectric Materials and DevicesHubei UniversityWuhan430062China College of Physics Chongqing UniversityChongqing400044China State Key Laboratory of Power Transmission Equipment and System Security and New Technology Chongqing UniversityChongqing400044China School of Science Chongqing University of Posts and TelecommunicationsChongqing400065China Analytical and Testing Center Chongqing UniversityChongqing400044China

In this work,we show significantly enhanced thermoelectric performance in Cu_(2) SnSe_(3) via a synergistic effect of Cd-doping and CuGaTe_(2) alloying in the temperature range of 300-823 *** the electron and phonon transport properties can be simultaneously regulated by Cd doping at Sn site,leading to a higher quality ***,a maximum figure of merit(zT) value of ~0.68 was obtained for Cu_(2) Sn_(0.93)Cd_(0.07)Se_(3) sample at823 K,which is about four times higher than that of the pristine sample(zT=0.18 at 773 K).Furthermore,Cu_(2) Sn_(0.93)Cd_(0.07)Se_(3) was alloyed with CuGaTe_(2) to reduce the lattice thermal conductivity in the high-temperature ***,a further enhanced zT value(0.77,823 K) was achieved in the(Cu_(2) Sn_(0.93)Cd_(0.07)Se_(3))_(0.94)(CuGaTe_(2))_(0.06) sample,with a high average zT(zT_(ave)) value of0.30 between 300 and 823 *** results demonstrate that Cd-doping combined with CuGaTe2 alloying could be an effective method to enhance zT values of Cu_(2) SnSe_(3) based compounds.

关键词： Cu_(2)SnSe_(3) Synergistic optimization Alloying Quality factor Thermoelectric

Insight-HXMT on-orbit thermal control status and thermal deformation impact analysis

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Radiation Detection Technology and Methods 2023年第3期7卷 337-349页

作者： Ai-Mei Zhang Yi-fan Zhang Jin-yuan liao yu-Peng Xu yu-Sa Wang Wen-bo Luo yu-Peng Zhou Zhi-Ying Qian xiao-bo li fang-Jun Lu shuang-nan Zhang li-ming Song Cong-Zhan liu fan Zhang Jian-Yin Nie Juan Wang Sheng Yang Tong Zhang xiao-Jing liu Rui-Jie Wang Xu-fang li Yi-Fei Zhang Zheng-Wei li xue-Feng Lu He Xu Di Wu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Beijing Institute of Spacecraft System Engineering CASTBeijing 100094China

Purpose The Hard X-ray Modulation Telescope is China’s first X-ray astronomy satellite launched on June 15,2017,dubbed *** and passive thermal control measures are employed to keep devices at suitable *** this paper,we analyzed the on-orbit thermal monitoring data of the first 5 years and investigated the effect of thermal deformation on the point spread function(PSF)of the *** We examined the data of the on-orbit temperatures measured using 157 thermistors placed on the collimators,detectors and their support structures and compared the results with the thermal control *** thermal deformation was evaluated by the relative orientation of the two star sensors installed on the main support *** effect was estimated with evolution of the PSF obtained with calibration scanning observations of the Crab *** The on-orbit temperatures met the thermal control requirements thus far,and the effect of thermal deformation on the PSF was negligible after the on-orbit pointing calibration.

关键词： X-ray Insight-HXMT Thermal control Temperature Star sensor data Pointing PSF

Genetic diversity and prevalence of emerging Rickettsiales in yunnan Province:a large-scale study

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Infectious Diseases of Poverty 2024年第4期13卷 97-98页

作者： Chun-Hong Du Rong Xiang shuang-shuang Bie Xing Yang Ji-Hu Yang ming-guo Yao yun Zhang Zhi-Hai He Zong-Ti Shao Chun-Feng Luo En-Nian Pu yu-Qiong li fan Wang Zhi Luo Chao-bo Du Jie Zhao Miao li Wu-Chun Cao Yi Sun Jia-Fu Jiang yunnan Key Laboratory for Zoonosis Control and Prevention Yunnan Institute for Endemic Diseases Control and Prevention Dali 671000 PR China State Key Laboratory of Pathogen and Biosecurity Academy of Military Medical Sciences Beijing 100071 PR China Department of Medical Microbiology and Immunology School of Basic Medicine Dali University Dali 671000 PR China

Background Rickettsia and related diseases have been identified as significant global public health *** study involved comprehensive field and systematic investigations of various rickettsial organisms in yunnan *** Between May 18,2011 and November 23,2020,field investigations were conducted across 42 counties in yunnan Province,China,encompassing small mammals,livestock,and *** screenings for Rickettsiales involved amplifying the 16S rRNA genes,along with additional genus-or species-specific genes,which were subse-quently confrmed through sequencing *** comparisons were carried out using the Basic Local Align-ment Search Tool(BLAST).Phylogenetic relationships were analyzed using the default parameters in the Molecular Evolutionary Genetics Analysis(MEGA)*** chi-squared test was used to assess the diversities and compo-nent ratios of rickettsial agents across various *** A total of 7964 samples were collected from small mammals,livestock,and ticks through yunnan Province and submitted for screening for rickettsial *** rickettsial species from the genera Rickettsia,Anaplasma,Ehrlichia,Neoehrlichia,and Wolbachia were detected,with an overall prevalence of 14.72%.Among these,11 species were identifed as pathogens or potential pathogens to humans and ***,10 rickettsial organisms were widely found in 42.11%(24 out of 57)of small mammal *** prevalence was observed in Dremomys samples at 5.60%,in samples from regions with latitudes above 4000 m or alpine meadows,and in those obtained from yuanmou *** phagocytophilum and Candidatus Neoehrlichia mikurensis were broadly infect-ing multiple genera of animal *** contrast,the small mammal genera Neodon,Dremomys,Ochotona,Anouro-sorex,and Mus were carrying individually specific rickettsial agents,indicating host *** were 13 rickettsial species detected in 57.14%(8 out of 14)of tick species,w

关键词： Rickettsiales Candidatus Rickettsia longicornii Tick Small mammal China

Prediction of energy resolution in the JUNO experiment

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Chinese Physics C 2025年第1期49卷 35-59页

作者： Angel Abusleme Thomas Adam Kai Adamowicz Shakeel Ahmad Rizwan Ahmed Sebastiano Aiello Fengpeng An Qi An Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Joao Pedro Athayde Marcondes de André Didier Auguste Weidong Bai Nikita Balashov Wander Baldini Andrea Barresi Davide Basilico Eric Baussan Marco Bellato Marco Beretta Antonio Bergnoli Daniel Bick Lukas Bieger Svetlana Biktemerova Thilo Birkenfeld Iwan Blake David Blum Simon Blyth Anastasia bolshakova Mathieu bongrand Clément bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Jose Busto Anatael Cabrera Barbara Caccianiga Hao Cai xiao Cai Yanke Cai Zhiyan Cai Stéphane Callier Steven Calvez Antonio Cammi Agustin Campeny Chuanya Cao guofu Cao Jun Cao Rossella Caruso Cédric Cerna Vanessa Cerrone Jinfan Chang yun Chang Auttakit Chatrabhuti Chao Chen guoming Chen Pingping Chen Shaomin Chen Xin Chen Yiming Chen Yixue Chen yu Chen Zelin Chen Zhangming Chen Zhiyuan Chen Zikang Chen Jie Cheng Yaping Cheng yuChin Cheng Alexander Chepurnov Alexey Chetverikov Davide Chiesa Pietro Chimenti Yen-Ting Chin Po-lin Chou Ziliang Chu Artem Chukanov Gérard Claverie Catia Clementi Barbara Clerbaux Marta Colomer Molla Selma Conforti Di Lorenzo Alberto Coppi Daniele Corti Simon Csakli Chenyang Cui Flavio Dal Corso Olivia Dalager Jaydeep Datta Christophe De La Taille Zhi Deng Ziyan Deng xiaoyu Ding xuefeng Ding Yayun Ding Bayu Dirgantara Carsten Dittrich Sergey Dmitrievsky Tadeas Dohnal Dmitry Dolzhikov Georgy Donchenko Jianmeng Dong Evgeny Doroshkevich Wei Dou Marcos Dracos Frédéric Druillole Ran Du Shuxian Du Katherine Dugas Stefano Dusini Hongyue Duyang Jessica Eck Timo Enqvist Andrea Fabbri Ulrike Fahrendholz Lei fan Jian fang Wenxing fang Dmitry Fedoseev li-Cheng Feng Qichun Feng Federico Ferraro Amélie Fournier Fritsch Fritsch Haonan Gan Feng Gao Feng Gao Alberto Garfagnini Arsenii Gavrikov Marco Giammarchi Nunzio Giudice Maxim Gonchar guanghua Gong Hui Gong yuri Gornushkin Marco Grassi Maxim Gromov Vasily Gromov minghao G Yerevan Physics Institute YerevanArmenia Université libre de Bruxelles BrusselsBelgium Universidade Estadual de Londrina LondrinaBrazil Pontificia Universidade Catolica do Rio de Janeiro Rio de JaneiroBrazil Millennium Institute for SubAtomic Physics at the High-energy Frontier(SAPHIR) ANIDChile Pontificia Universidad Católica de Chile SantiagoChile Beijing Institute of Spacecraft Environment Engineering BeijingChina Beijing Normal University BeijingChina China Institute of Atomic Energy BeijingChina Institute of High Energy Physics BeijingChina North China Electric Power University BeijingChina School of Physics Peking UniversityBeijingChina Tsinghua University BeijingChina University of Chinese Academy of Sciences BeijingChina Jilin University ChangchunChina College of Electronic Science and Engineering National University of Defense TechnologyChangshaChina Chongqing University ChongqingChina Dongguan University of Technology DongguanChina Jinan University GuangzhouChina Sun Yat-sen University GuangzhouChina Harbin Institute of Technology HarbinChina University of Science and Technology of China HefeiChina The Radiochemistry and Nuclear Chemistry Group in University of South China HengyangChina Wuyi University JiangmenChina Shandong University JinanChinaand Key Laboratory of Particle Physics and Particle Irradiation of Ministry of EducationShandong UniversityQingdaoChina nanjing University NanjingChina guangxi University NanningChina East China University of Science and Technology ShanghaiChina School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuangChina nankai University TianjinChina Wuhan University WuhanChina Xi'an Jiaotong University Xi'anChina Xiamen University XiamenChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhouChina Institute of Physics National

This paper presents an energy resolution study of the JUNO experiment,incorporating the latest knowledge acquired during the detector construction *** determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 *** achieve this ambitious goal,significant efforts have been undertaken in the design and production of the key components of the JUNO *** factors affecting the detection of inverse beta decay signals have an impact on the energy resolution,extending beyond the statistical fluctuations of the detected number of photons,such as the properties of the liquid scintillator,performance of photomultiplier tubes,and the energy reconstruction *** account for these effects,a full JUNO simulation and reconstruction approach is *** enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy *** results of this study reveal an energy resolution of 2.95% at 1 ***,this study assesses the contribution of major effects to the overall energy resolution *** analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data ***,it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors.

关键词： energy resolution liquid scintillator detector JUNO simulation reconstruction

Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-Sheng Zhao Dong li Shao-lin Xiong Yan-Qiu Zhang Yang Su Wei Chen Yi Zhao xiao-bo li Jia-Cong liu Wen-Xi Peng Rui Qiao Xin-Qiao li Xiang-Yang Wen li-ming Song Shi-Jie Zheng Xin-Ying Song xiao-yun Zhao yue Huang shuang-nan Zhang Shuo xiao Ce Cai Zheng-Hua An Can Chen Gang Chen Wei Chen Yan-Qi Du Min Gao Ke Gong Dong-Ya guo Zhi-Wei guo Jian-Jian He Bin li Chao li Chao-Yang li Gang li Jian-Hui li Lu li Qing-Xin li Yan-guo li Jing liang xiao-Hua liang Jin-yuan liao xiao-Jing liu Ya-Qing liu Qi Luo Xiang Ma Bin Meng Ge Ou Dong-li Shi Jing-Yan Shi Gong-Xing Sun Xi-Lei Sun You-li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu Sheng-Lun Xie Yan-Bing Xu yu-Peng Xu Wang-Chen xue Sheng Yang Min Yao Jian-Ying Ye Qi-Bin Yi Chao-yue Zhang Da-li Zhang fan Zhang Fei Zhang Hong-Mei Zhang Kai Zhang Peng Zhang xiao-Lu Zhang Zhen Zhang guo-Ying Zhao Shi-Yi Zhao Chao Zheng Xing Zhou yue Zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： xiao-yun Zhao Shao-lin Xiong Xiang-Yang Wen Xin-Qiao li Ce Cai Shuo xiao Qi Luo Wen-Xi Peng Dong-Ya guo Zheng-Hua An Ke Gong Jin-yuan liao Yan-Qiu Zhang yue Huang Lu li Xing Wen Fei Zhang Jing Duan Chen-Wei Wang Dong-li Shi Peng Zhang Qi-Bin Yi Chao-Yang li Yan-Bing Xu xiao-Hua liang Ya-Qing liu Da-li Zhang Xi-Lei Sun fan Zhang Gang Chen Huan-yu Wang Sheng Yang xiao-Jing liu Min Gao Mao-Shun li Jin-Zhou Wang Xing Zhou Yi Zhao Wang-Chen xue Chao Zheng Jia-Cong liu Xing-bo Han Jin-ling Qi Jia Huang Ke-Ke Zhang Can Chen Xiong-Tao Yang Dong-Jie Hou yu-Sa Wang Rui Qiao Xiang Ma xiao-bo li Ping Wang Xin-Ying Song li-ming Song Shi-Jie Zheng Bing li Hong-Mei Zhang yue Zhu Wei Chen Jian-Jian He Zhen Zhang Jin Hou Hong-Jun Wang Yan-Chao Hao Xiang-yu Wang Zong-yuan Yang Zhi-Long Wen Zhi Chang yuan-yuan Du Rui Gao xiao-Fei Lan Yan-guo li Gang li Xu-fang li fang-Jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang yu-Peng Xu Jia-Wei Yang xue-Juan Yang shuang-nan Zhang Chao-yue Zhang Cheng-Mo Zhang Zhi-Cheng Tang Cheng Cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-Xin liu yue Huang guang-Cheng xiao Qing-Cui Bu Jin-Lu Qu Shu Zhang shuang-nan Zhang Shu-Mei Jia fang-Jun Lu Xiang Ma lian Tao Wei Zhang li Chen li-ming Song Ti-Pei li yu-Peng Xu xue-Lei Cao Yong Chen Cong-Zhan liu Ce Cai Zhi Chang Gang Chen Tian-Xiang Chen Yi-Bao Chen yu-Peng Chen Wei Cui Wei-Wei Cui Jing-Kang Deng Yong-Wei Dong yuan-yuan Du Min-xue Fu guan-Hua Gao He Gao Min Gao ming-yu Ge yu-Dong gu Ju guan Cheng-Cheng guo Da-Wei Han Jia Huo Lu-Hua Jiang Wei-Chun Jiang Jing Jin Yong-Jie Jin ling-Da Kong Bing li Cheng-Kui li Gang li Mao-Shun li Wei li Xian li xiao-bo li Xu-fang li Yang-guo li Zheng-Wei li xiao-Hua liang Jing-yuan liao Bai-Sheng liu guo-Qing liu Hong-Wei liu xiao-Jing liu Yi-Nong liu bo Lu xue-Feng Lu Qi Luo Tao Luo Bin Meng Yi nang Jian-Yin Nie Ge Ou Na Sai Ren-Cheng Shang Xin-Ying Song liang Sun Ying Tan You-li Tuo Chen Wang guo-Feng Wang Juan Wang ling-Jun Wang Weng-Shuai Wang yu-Sa Wang Xiang-Yang Wen Bai-Yang Wu bo-Bing Wu Mei Wu Shuo xiao Shao-lin Xiong He Xu Jia-Wei Yang Sheng Yang Yan-Ji Yang Yi-Jung Yang Qi-Bin Yi Qian-Qing Yin yuan You Ai-Mei Zhang Cheng-Mo Zhang fan Zhang Hong-Mei Zhang Juan Zhang Tong Zhang Wan-Chang Zhang Wen-Zhao Zhang Yi Zhang Yi-Fei Zhang Yong-Jie Zhang yuan-Hang Zhang yue Zhang Zhao Zhang Zhi Zhang Zi-liang Zhang Hai-Sheng Zhao xiao-fan Zhao Shi-Jie Zheng Yao-guang Zheng Deng-Ke Zhou Jian-Feng Zhou yu-Xuan Zhu Ren-lin Zhuang yue Zhu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031