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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

Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao zhang Xue-qian Wang Feng-qi zhang Xiao-Ya Cui Bing-Bing Fan Jia-Ming Guo Zhi-Min Guo Rui Huang Wen Huang Xu-Bo li Meng-Ru li Yan Ma Zhi-Hua Shen Yong-gang Sun De-zhuang Wang Fei-Yang Wang li-qiang Wang Nan Wang Tian-li Wang Wei Wang Xiao-Yang Wang yi-Han Wang Fu-Jie Yu Yu-zhen yin ling-Kun zhang yi zhang Jian-Yang zhang qi Zhao Yu-Ping Zhao Xin-Dong Zhu Yasir Sohail Ya-Nan Chen Tao Feng qi-Long Gao Hai-Yan He Yong-Jiang Huang Zeng-Bao Jiao Hua Ji Yao Jiang qiang li Xiao-Ming li Wei-Bing liao Huai-Jun lin Hui liu qi liu qing-Feng liu Wei-Di liu Xiong-Jun liu Yang Lu yi-Ping Lu Wen Ma Xue-Fei Miao Jie Pan qing Wang Hong-Hui Wu Yuan Wu Tao Yang Wei-Ming Yang qian Yu jin-Yu zhang Zhi-gang Chen liang Mao Yang Ren Bao-Long Shen Xun-li Wang Zhe Jia He Zhu zhen-Duo Wu Si Lan School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Department of Physics City University of Hong KongHongKong 999077China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Department of Mechanical Engineering Research Institute for Advanced ManufacturingThe Hong Kong Polytechnic UniversityHong Kong 100872China Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of Solidification Control and Digital Preparation Technology(liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhou 221116China School of Physical Sciences Great Bay UniversityDongguan 523000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Beijing Advanced Innovation Center for Materials Genome Engineering Research Institute for Carbon NeutralityUniversity of Science and Technology BeijingBeijing 100083China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China School of Computing Macquarie UniversitySydney 2113Australia Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China State Key Laborato

Owing to their exceptional properties,high-entropy alloys(HEAs)and high-entropy materials have emerged as promising research areas and shown diverse ***,the recent advances in the field are comprehensively reviewed,organized into five *** first section introduces the background of HEAs,covering their definition,significance,application prospects,basic properties,design principles,and *** subsequent section focuses on cutting-edge high-entropy structural materials,highlighting developments such as nanostructured alloys,grain boundary engineering,eutectic systems,cryogenic alloys,thin films,micro-nano-lattice structures,additive manufacturing,high entropy metallic glasses,nano-precipitate strengthened alloys,composition modulation,alloy fibers,and refractory *** the following section,the emphasis shifts to functional materials,exploring HEAs as catalysts,magneto-caloric materials,corrosion-resistant alloys,radiation-resistant alloys,hydrogen storage systems,and materials for ***,the review encompasses functional high-entropy materials outside the realm of alloys,including thermoelectric,quantum dots,nanooxide catalysts,energy storage materials,negative thermal expansion ceramics,and high-entropy wave absorption *** paper concludes with an outlook,discussing future directions and potential growth areas in the *** this comprehensive review,researchers,engineers,and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： High entropy alloys Cutting-edge structural materials Cutting-edgefunctional materials

A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

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Research in Astronomy and Astrophysics 2024年第10期24卷 25-35页

作者： yi Zhao Wangchen Xue Shaolin Xiong qi Luo Yuanhao Wang Jiacong liu Heng Yu Xiaoyun Zhao Yue Huang jinyuan liao Jianchao Sun Xiaobo li qibin yi Ce Cai Shuo Xiao Shenglun Xie chao zheng Yanqiu zhang Chenwei Wang Wenjun Tan Zhiwei Guo chaoyang li zhenghua An gang Chen Yanqi Du Min Gao Ke Gong Dongya Guo Jiang He Jianjian He Bing li gang li Xinqiao li jing liang Xiaohua liang Yaqing liu Xiang Ma Rui qiao liming Song Xinying Song Xilei Sun jin Wang Ping Wang Xiangyang Wen Hong Wu Yanbing Xu Sheng Yang Dali zhang Fan zhang Hongmei zhang Peng zhang Shu zhang zhen zhang Shijie zheng Keke zhang Xingbo Han Haiyan Wu Hu Tai Hao Geng Gaopeng Lu Wei Xu Fanchao Lyu Hongbo zhang Fangjun Lu Shuangnan zhang Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China College of Physics Hebei Normal UniversityShijiazhuang 050024China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Institute of Astrophysics Central China Normal UniversityWuhan 430079China College of physics Sciences Technology Hebei UniversityBaoding 071002China Physics and Space Science College China West Normal UniversityNanchong 637002China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China College of Electronic and information Engineering Tongji UniversityShanghai 201804China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201304China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Electronic Information School Wuhan UniversityWuhan 430072China Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up *** based on the relative counts of different detectors has been widely used for all-sky gamma-ray *** are two major methods for this count distribution localization:χ^(2)minimization method and the Bayesian *** we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ^(2)*** comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ^(2)method,especially for weak *** further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location *** method is very suitable for scenarios with limited computation resources or timesensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

关键词： methods:data analysis methods:analytical (stars:)gamma-ray burst:general

Real world effectiveness of PCSK-9 inhibitors combined with statins versus statins-based therapy among patients with very high risk of atherosclerotic cardiovascular disease in China(RWE-PCSK study)

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Journal of Geriatric Cardiology 2021年第4期18卷 261-270页

作者： Yu-qi liU Dan-Dan li Meng CHAI Hong-liang CONG Xiao-qiang CONG Jun DAI rong-Pin DU Ming GAO jin-Cheng GUO Yan-qing GUO Xiao-Jian HONG rong-Chong HUANG Feng-Shun JIA Jia-Yu li qing li Jia-Mei liU Xin-Ping liU Yu-Guo liU Hong-gang NIE Bing SHAO Xiao-Yu SHEN Hai-qing SONG yi-Jun SONG li-Jun WANG Shuo WANG Dong-Mei WU jing XIA Zhi-Yong YANG Hong-ying YU Hui zhang Tie-Mei zhang Ji-yi ZHAO liang-Chen ZHAO Ming-qi zhenG Yun-Dai CHEN Department of Cardiology Chinese PLA General HospitalBeijingChina Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityBeijing Institute of Heart Lung and Blood Vessel DiseaseBeijing Key Laboratory of Precision Medicine of Coronary Atherosclerotic DiseaseClinical Center for Coronary Heart DiseaseCapital Medical UniversityBeijingChina Department of Cardiology Tianjin Chest HospitalTianjinChina Department of Cardiology the First Hospital of Jilin UniversityChangchunChina Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseaseChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Cardiology Hebei People’s HospitalShijiazhuangChina Department of Cardiology Kailuan General HospitalHebei Union UniversityTangshanChina Department of Cardiology Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Cardiology Shanxi Cardiovascular HospitalTaiyuanChina Department of Cardiology the Fourth Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Cardiology Beijing Friendship HospitalCapital Medical UniversityBeijingChina Department of Cardiology Tangshan Worker’s HospitalTangshanChina Department of Cardiology China-Japan Friendship Hospital Affiliated Jilin UniversityChangchunChina Department of Cardiology Handan Central HospitalHebeiChina Heart Center Beijing Key Laboratory of HypertensionBeijing Chao-Yang HospitalCapital Medical UniversityBeijingChina Department of Cardiology the First Affiliated Hospital of Dalian Medical UniversityLiaoningChina Department of Cardiology the Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Cardiology the Second Affiliated Hospital of Shenyang Medical CollegeShenyangChina Department of Cardiology the Second Hospital of Shanxi Medical UniversityTaiyuanChina Department of Neurology Xuanwu Hospital Capital Medical UniversityBeijingChina Department of Neurology Tianjin Medical University Gen

BACKGROUND The efficacy and safety of proprotein convertase subtilisin/kexin type 9(PCSK-9) inhibitors were confirmed by several clinical trials, but its effectiveness in routine clinical practice in China has not been evaluated. This study aims to describe the real world effectiveness of PCSK-9 inhibitors combined with statins compared with statins-based therapy among patients with very high risk of atherosclerotic cardiovascular disease(ASCVD).METHODS This is a multi-center observational study, enrolled patients from 32 hospitals who underwent percutaneous coronary intervention(PCI) from January to June in 2019. There are 453 patients treated with PCSK-9 inhibitors combined with statins in PCSK-9 inhibitor group and 2,610 patients treated with statins-based lipid lowering therapies in statins-based group. The lipid control rate and incidence of major adverse cardiovascular events(MACE) over six months were compared between two groups.A propensity score-matched(PSM) analysis was used to balance two groups on confounding factors. Survival analysis using Kaplan-Meier methods was applied for *** In a total of 3,063 patients, 89.91% of patients had received moderate or high-intensity statins-based therapy before PCI, but only 9.47% of patients had low-density lipoprotein cholesterol(LDL-C) levels below 1.4 mmol/L at baseline. In the PSM selected patients, LDL-C level was reduced by 42.57% in PCSK-9 inhibitor group and 30.81%(P < 0.001) in statins-based group after six months. The proportion of LDL-C ≤ 1.0 mmol/L increased from 5.29% to 29.26% in PCSK-9 inhibitor group and 0.23% to 6.11% in statins-based group, and the proportion of LDL-C ≤ 1.4 mmol/L increased from 10.36% to 47.69% in PCSK-9 inhibitor group and 2.99% to 18.43% in statins-based group(P < 0.001 for both). There was no significant difference between PCSK-9 inhibitor and statins-based treatment in reducing the risk of MACE(hazard ratio = 2.52, 95% CI: 0.49-12.97, P = 0.250).CONCLUSIONS In the real

关键词： LDL RWE-PCSK study Real world effectiveness of PCSK-9 inhibitors combined with statins versus statins-based therapy among patients with very high r

Association between atmospheric concentration of particulate matters and inpatient and outpatient visits for chronic respiratory diseases in Xiamen, China

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Chinese Medical Journal 2021年第13期134卷 1616-1618页

作者： Tao-ling Zhong yi-Wei zhang Xiang-Yang Yao Guang-Hui Xu Hui liu qiu-Shi Xu Wei Sun Zhi-Bin li Yun-gang Yang jin-Zhun Wu chao zheng qi-Yuan li lin-Fu Zhou National Institute of Data Science for Health and Medicine School of MedicineXiamen UniversityXiamenFujian 361102China Pulmonary Department The First Affiliated Hospital of Xiamen UniversityXiamenFujian 361000China The First Affiliated Hospital of Xiamen University Xinglin Branch XiamenFujian 361000China Xiamen Health and Medical Big Data Center XiamenFujian 361000China Xiamen Health Information Association XiamenFujian 361000China Epidemiology Research Unit The First Affiliated Hospital of Xiamen UniversityXiamenFujian 361000China Department of Pediatrics The First Affiliated Hospital of Xiamen UniversityXiamenFujian 361000China Xiamen Maternity and Child Care Hospital XiamenFujian 361000China Department of Respiratory and Critical Care Medicine The First Affiliated HospitalNanjing Medical UniversityNanjingJiangsu 210029China

Exposure to airborne particulate matters(fine particulate matter[PM2.5]and inhalable particulate matter[PM10])causes acute exacerbation of chronic respiratory diseases and even death in some patients.[1,2]Here,we studied the association between airborne pollutants(PM2.5,PM10,ozone[O_(3)]),weather conditions(mean air temperature,wind force),and outpatient and inpatient visits for chronic respiratory diseases(bronchitis,emphysema and chronic obstructive pulmonary disease[COPD],bronchiectasis)in Xiamen,China.

关键词： China Xiamen ozone

无源超高频RFID低压高效电荷泵的设计与实现

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电子科技大学学报 2010年第6期39卷 934-939页

作者：靳钊庄奕琪王江安杜永乾乔丽萍张超西安电子科技大学微电子学院西安710071 西藏民族学院信息工程学院陕西咸阳712082

提出了一种适用于无源超高频射频识别(RFID)标签的低压高效电荷泵电路的设计方案,用以最大化标签的识别距离。该方案利用偏置电路为主电荷泵提供偏置电压,通过二极管连接的MOSFET抑制偏置电路的负载电流来提高偏置电压,大大减小了传统... 详细信息

提出了一种适用于无源超高频射频识别(RFID)标签的低压高效电荷泵电路的设计方案,用以最大化标签的识别距离。该方案利用偏置电路为主电荷泵提供偏置电压,通过二极管连接的MOSFET抑制偏置电路的负载电流来提高偏置电压,大大减小了传统电荷泵中的阈值损失,有效抑制了反向漏电流,提高了电荷泵的灵敏度和能量转换效率。该结构使用chartered 0.35μm CMOS工艺进行流片验证,实测结果表明,在输入275 mV负载电阻200 k?情况下,电荷泵输出可达1.47 V,能量转换效率最高可达26.2%;采用该电荷泵的RFID标签识别距离最远可达4.2 m。该设计为RFID芯片的良好性能提供了可靠保证。

关键词：电荷泵电路低压能量转换效率射频识别

Data release of the LAMOST pilot survey

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Research in Astronomy and Astrophysics 2012年第9期12卷 1243-1246页

作者： A-li Luo Hao-Tong zhang Yong-Heng Zhao gang Zhao Xiang-Qun Cui Guo-Ping li Yao-Quan Chu Jian-rong Shi gang Wang Jian-Nan zhang Zhong-Rui Bai Xiao-Yan Chen Feng-Fei Wang Yan-Xin Guo Jian-Jun Chen Bing Du Xiao Kong Ya-Juan Lei yin-Bi li yi-Han Song Yue Wu Yan-Xia zhang Xin-lin Zhou Fang Zuo Peng Du lin He Wen Hou yi-qiao Dong Jian li Guang-Wei li Shuang li jing Song Yuan Tian Meng-Xin Wang Yong-Hui Hou Zhi-ying Huo Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei Jia Fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge jin Ai-Hua li qi li yin-Dun Mao zheng-Hong Tang qing-Sheng Tao liang-Ping Tu Da-qing Wang Dan Wang Jian-Ping Wang Lei Wang Shou-Guan Wang Shu-qing Wang Ya-Nan Wang You Wang Yue-Fei Wang Ming-Zhi Wei Xiang-Xiang Xue Xiao-zheng Xing ling-Zhe Xu Xin-qi Xu Yan Xu De-Hua Yang Shi-Hai Yang zheng-qiu Yao Yong Yu Hui Yuan chao Zhai En-Peng zhang jing zhang li-Ping zhang Weizhang Yong zhang zhen-chao zhang Ming Zhao Fang Zhou Yong-Tian Zhu Jie Zhu Si-Cheng Zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China lal @ lamost o rg Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Technologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

This paper describes the data release of the LAMOST pilot survey, which includes data reduction, calibration, spectral analysis, data products and data access. The accuracy of the released data and the information about the FITS headers of spectra are also introduced. The released data set includes 319 000 spectra and a catalog of these objects.

关键词： techniques: spectroscopic survey — data reduction — data release

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