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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

Degradation of gate-recessed MOS-HEMTs and conventional HEMTs under DC electrical stress

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Chinese Physics B 2021年第7期30卷 478-483页

作者： yi-Dong Yuan Dong-Yan zhao Yan-Rong Cao Yu-Bo wang jin Shao Yan-Ning Chen wen-Long He Jian Du Min wang Ye-Ling Peng Hong-Tao Zhang Zhen Fu Chen Ren fang liu Long-Tao Zhang Yang zhao Ling Lv yi-Qiang zhao Xue-Feng zheng Zhi-Mei Zhou Yong Wan xiao-Hua Ma School of Microelectronics Tianjin UniversityTianjin 300072China Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co.LtdBeijing 100192China School of Electro-Mechanical Engineering Xidian UniversityXi'an 710071China Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices Xidian UniversityXi'an 710071China Smart Shine Microelectronics Technology Co. LtdQingdao 100081China

The performance degradation of gate-recessed metal–oxide–semiconductor high electron mobility transistor(MOSHEMT)is compared with that of conventional high electron mobility transistor(HEMT)under direct current(DC)stress,and the degradation mechanism is *** the channel hot electron injection stress,the degradation of gate-recessed MOS-HEMT is more serious than that of conventional HEMT devices due to the combined effect of traps in the barrier layer,and that under the gate dielectric of the *** threshold voltage of conventional HEMT shows a reduction under the gate electron injection stress,which is caused by the barrier layer traps trapping the injected electrons and releasing them into the ***,because of defects under gate dielectrics which can trap the electrons injected from gate and deplete part of the channel,the threshold voltage of gate-recessed MOS-HEMT first increases and then decreases as the conventional *** saturation phenomenon of threshold voltage degradation under high field stress verifies the existence of threshold voltage reduction effect caused by gate electron injection.

关键词： gate-recessed MOS-HEMTs channel electron injection gate electron injection barrier layer traps

Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

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Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu xiao-Fen Yu Guo-Qiang Li Ming-Hao Qu Huan wang Chuang liu Yu-Ping man xiao-Han Jiang Mu-Zi Li Jian wang Qi-Qi Chen Rui Lei Cheng-Cheng zhao Yun-Qiu Zhou zheng-wang Jiang Zuo-Zhou Li Shang zheng Chang Dong Bai-Lin wang Yan-Xiang Sun Hui-Qin Zhang Jie-Wei Li Quan-Hui Mo ying Zhang Xin Lou Hai-Xu Peng Ya-Ting yi He-Xin wang Xiu-Jun Zhang yi-Bo wang Dan wang Li Li Qiong Zhang wen-Xia wang Yongbo liu Lei Gao jin-Hu Wu Yan-Chang wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of Soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural Sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of Life Sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of Agriculture Eastern Liaoning UniversityDandongLiaoningChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei Hongshan Laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research Limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3)or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

Design and fabrication of 10-kV silicon–carbide p-channel IGBTs with hexagonal cells and step space modulated junction termination extension

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Chinese Physics B 2019年第6期28卷 472-476页

作者： zheng-Xin wen Feng Zhang Zhan-Wei Shen Jun Chen Ya-Wei He Guo-Guo Yan Xing-fang liu Wan-Shun zhao Lei wang Guo-Sheng Sun yi-Ping Zeng Key Laboratory of Semiconductor Material Sciences Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Department of Physics Xiamen UniversityXiamen 361005China

10-kV 4 H–SiC p-channel insulated gate bipolar transistors(IGBTs) are designed, fabricated, and characterized in this paper. The IGBTs have an active area of 2.25 mm^2 with a die size of 3 mm× 3 mm. A step space modulated junction termination extension(SSM-JTE) structure is introduced and fabricated to improve the blocking performance of the *** SiC p-channel IGBTs with SSM-JTE termination exhibit a leakage current of only 50 nA at-10 kV. To improve the on-state characteristics of SiC IGBTs, the hexagonal cell(H-cell) structure is designed and compared with the conventional interdigital cell(I-cell) structure. At an on-state current of 50 A/cm^2, the voltage drops of I-cell IGBT and H-cell IGBT are10.1 V and 8.3 V respectively. Meanwhile, on the assumption that the package power density is 300 W/cm^2, the maximum permissible current densities of the I-cell IGBT and H-cell IGBT are determined to be 34.2 A/cm^2 and 38.9 A/cm^2 with forward voltage drops of 8.8 V and 7.8 V, respectively. The differential specific on-resistance of I-cell structure and H-cell structure IGBT are 72.36 m?·cm^2 and 56.92 m?·cm^2, respectively. These results demonstrate that H-cell structure silicon carbide IGBT with SSM-JTE is a promising candidate for high power applications.

关键词： silicon carbide power device insulated gate bipolar transistors(IGBTs) high voltage

Fragmentation of stable and neutron-rich ^(12-16)C into boron fragments at approximately 240 MeV/nucleon

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Chinese Physics C 2022年第1期46卷 118-123页

作者： Shu-Ya jin Ya-Zhou Sun Shi-Tao wang Zhi-Yu Sun Xue-Heng Zhang Zhi-Qiang Chen Bo Mei yi-Xuan zhao Shu-wen Tang Yu-Hong Yu Duo Yan fang fang Yong-Jie Zhang Shao-bo Ma Xiang-man liu Rui Han CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100080China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China School of Physics and Electrical Engineering Anyang Normal UniversityAnyang 455000China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

The elemental fragmentation cross sections of boron fragments produced by stable and neutron-rich^(12-16)C beams with a carbon target were systematically measured at an incident beam energy of approximately 240 MeV/*** measured cross sections were found to increase as the projectile mass number *** observed feature is explained qualitatively based on the abrasion-ablation two-stage reaction model and is compared quantitatively with predictions from various reaction models,including empirical and statistical *** models agree with the measured cross sections within a factor of 2.

关键词： elemental fragmentation cross sections neutron-rich carbon isotopes abrasion-ablation model

Science with the 2.5-meter Wide Field Survey Telescope(WFST)

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Science China(Physics,Mechanics & Astronomy) 2023年第10期66卷 155-202页

作者： Tinggui wang Guilin liu Zhenyi Cai jinjun Geng Min fang Haoning He Ji-an Jiang Ning Jiang Xu Kong Bin Li Ye Li wentao Luo Zhizheng Pan Xuefeng Wu Ji Yang Jiming Yu Xianzhong zheng Qingfeng Zhu yi-Fu Cai Yuanyuan Chen Zhiwei Chen Zigao Dai Lulu Fan yizhong Fan wenjuan fang Zhicheng He Lei Hu Maokai Hu Zhiping jin Zhibo Jiang Guoliang Li Fan Li Xuzhi Li Runduo Liang Zheyu Lin Qingzhong liu wenhao liu zhengyan liu Wei liu Yao liu zheng Lou Han Qu Zhenfeng Sheng Jianchun Shi yiping Shu Zhenbo Su Tianrui Sun Hongchi wang Huiyuan wang Jian wang Junxian wang Daming Wei Junjie Wei Yongquan Xue jingzhi Yan chao Yang Ye Yuan Yefei Yuan Hongxin Zhang Miaomiao Zhang Haibin zhao wen zhao Department of Astronomy University of Science and Technology of ChinaHefei 230026China Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China CAS Key Laboratory for Research in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China National Astronomical Observatory of Japan National Institutes of Natural SciencesTokyo 181-8588Japan

The Wide Field Survey Telescope(WFST) is a dedicated photometric surveying facility being built jointly by University of Science and Technology of China(USTC) and the Purple Mountain Observatory(PMO). It is equipped with a 2.5-meter diameter primary mirror, an active optics system, and a mosaic CCD camera with 0.73 gigapixels on the primary focal plane for highquality image capture over a 6.5-square-degree field of view. The installation of WFST near the summit of Saishiteng mountain in the Lenghu region is scheduled in summer of 2023, and the operation is planned to start three months later. WFST will scan the northern sky in four optical bands(u, g, r and i) at cadences from hourly/daily in the deep high-cadence survey(DHS) program, to semi-weekly in the wide field survey(WFS) program. During a photometric night, a nominal 30 s exposure in the WFS program will reach a depth of 22.27, 23.32, 22.84, and 22.31(AB magnitudes) in these four bands, respectively, allowing for the detection of a tremendous amount of transients in the low-z universe and a systematic investigation of the variability of Galactic and extragalactic objects. In the DHS program, intranight 90 s exposures as deep as 23(u) and 24 mag(g), in combination with target of opportunity follow-ups, will provide a unique opportunity to explore energetic transients in demand for high sensitivities, including the electromagnetic counterparts of gravitational wave events, supernovae within a few hours of their explosions,tidal disruption events and fast, luminous optical transients even beyond redshift of unity. In addition, the final 6-year co-added images, anticipated to reach g■25.8 mag in WFS or 1.5 mags deeper in DHS, will be of fundamental importance to general Galactic and extragalactic science. The highly uniform legacy surveys of WFST will serve as an indispensable complement to those of the Vera C. Rubin Observatory's Legacy Survey of Space and Time(LSST) that monitors the southern sky.

关键词： optical telescope time domain astronomy photometric survey supernovae multi-messenger events tidal disruption event

Specific pupylation as IDEntity reporter(SPIDER)for the identification of protein-biomolecule interactions

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Science China(Life Sciences) 2023年第8期66卷 1869-1887页

作者： He-Wei Jiang Hong Chen Yun-xiao zheng Xue-Ning wang Qingfeng Meng jin Xie Jiong Zhang ChangSheng Zhang zhao-Wei Xu Zi-Qing Chen Lei wang Wei-Sha Kong Kuan Zhou Ming-Liang Ma Hai-Nan Zhang Shu-Juan Guo Jun-Biao Xue jing-Li Hou Zhe-yi liu wen-Xue Niu fang-Jun wang Tao wang Wei Li Rui-Na wang Yong-Jun Dang Daniel MCzajkowsky JianFeng Pei Jia-Jia Dong Sheng-Ce Tao Shanghai Center for Systems Biomedicine Key Laboratory of Systems Biomedicine(Ministry of Education)Shanghai Jiao Tong UniversityShanghai 200240China Center for Quantitative Biology Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Inflammation and Immune Mediated Diseases Laboratory of Anhui Province School of PharmacyAnhui Medical UniversityHefei 230032China Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of the Chinese Academy of SciencesChinese Academy of SciencesShanghai 200240China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China Key Laboratory of Gastrointestinal Cancer(Fujian Medical University) Ministry of EducationFuzhou 350122China Department of Molecular Biology Princeton UniversityNew Jersey 08540USA Instrumental Analysis Center Shanghai Jiao Tong UniversityShanghai 200240China CAS Key Laboratory of Separation Sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Systems Biology Shenzhen Bay LaboratoryPeking University Shenzhen Graduate SchoolShenzhen 518055China Department of Medicinal Chemistry School of PharmacyChina Pharmaceutical UniversityNanjing 211198China Key Laboratory of Metabolism and Molecular Medicine the Ministry of EducationDepartment of Biochemistry and Molecular BiologySchool of Basic Medical SciencesFudan UniversityShanghai 200240China Center for Novel Target and Therapeutic Intervention Chongqing Medical UniversityChongqing 400016China School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Protein-biomolecule interactions play pivotal roles in almost all biological *** a biomolecule of interest,the identification of the interacting protein(s)is *** this need,although many assays are available,highly robust and reliable methods are always *** combining a substrate-based proximity labeling activity from the pupylation pathway of Mycobacterium tuberculosis and the streptavidin(SA)-biotin system,we developed the Specific Pupylation as IDEntity Reporter(SPIDER)method for identifying protein-biomolecule *** SPIDER,we validated the interactions between the known binding proteins of protein,DNA,RNA,and small *** successfully applied SPIDER to construct the global protein interactome for m^(6)A and m RNA,identified a variety of uncharacterized m^(6)A binding proteins,and validated SRSF7 as a potential m^(6)A *** globally identified the binding proteins for lenalidomide and Cob ***,we identified SARS-CoV-2-specific receptors on the cell ***,SPIDER is powerful and highly accessible for the study of proteinbiomolecule interactions.

关键词： proximity labeling protein-biomolecule interaction proteomics pupylation

The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-Li Luo Yong-Heng zhao Gang zhao Li-Cai Deng xiao-Wei liu yi-Peng jing Gang wang Hao-Tong Zhang Jian-Rong Shi Xiang-Qun Cui Yao-Quan Chu Guo-Ping Li Zhong-Rui Bai Yue Wu Yan Cai Shu-Yun Cao Zi-Huang Cao Jeffrey L.Carlin Hai-Yuan Chen Jian-Jun Chen Kun-Xin Chen Li Chen Xue-Lei Chen xiao-Yan Chen ying Chen Norbert Christlieb Jia-Ru Chu Chen-Zhou Cui yi-Qiao Dong Bing Du Dong-Wei Fan Lei Feng Jian-Ning Fu Peng Gao Xue-Fei Gong Bo-Zhong Gu Yan-Xin Guo Zhan-wen Han Bo-Liang He jin-Liang Hou Yong-Hui Hou wen Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-wen Hu Zhi-ying Huo Lei Jia fang-Hua Jiang Xiang Jiang Zhi-Bo Jiang Ge jin xiao Kong Xu Kong Ya-Juan Lei Ai-Hua Li Chang-Hua Li Guang-Wei Li Hai-Ning Li Jian Li Qi Li Shuang Li Sha-Sha Li Xin-Nan Li Yan Li yin-Bi Li Ye-Ping Li Yuan Liang Chien-Cheng Lin chao liu Gen-Rong liu Guan-Qun liu Zhi-Gang liu wen-Zhi Lu Yu Luo yin-Dun Mao Heidi Newberg Ji-Jun Ni zhao-Xiang Qi Yong-Jun Qi Shi-yin Shen Huo-Ming Shi jing Song yi-Han Song Ding-Qiang Su Hong-Jun Su zheng-Hong Tang Qing-Sheng Tao Yuan Tian Dan wang Da-Qi wang Feng-Fei wang Guo-Min wang Hai wang Hong-Chi wang Jian wang Jia-Ning wang Jian-Ling wang Jian-Ping wang Jun-Xian wang Lei wang Meng-Xin wang Shou-Guan wang Shu-Qing wang Xia wang Ya-Nan wang You wang Yue-Fei wang You-Fen wang Peng Wei Ming-Zhi Wei Hong Wu Ke-Fei Wu Xue-Bing Wu Yu-Zhong Wu xiao-zheng Xing Ling-Zhe Xu Xin-Qi Xu Yan Xu Tai-Sheng Yan De-Hua Yang Hai-Feng Yang Hui-Qin Yang Ming Yang zheng-Qiu Yao Yong Yu Hui Yuan Hai-Bo Yuan Hai-Long Yuan Wei-Min Yuan chao Zhai En-Peng Zhang Hua-Wei Zhang Jian-Nan Zhang Li-Pin Zhang Wei Zhang Yong Zhang Yan-Xia Zhang zheng-chao Zhang Ming zhao fang Zhou Xu Zhou Jie Zhu Yong-Tian Zhu Si-Cheng Zou fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University Yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in June 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in June 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

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

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