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斩宵小,济世道——评浙昆《壮哉少年》

艺术百家 2024年第3期40卷 77-81,91页

作者：谢雍君中国艺术研究院戏曲研究所北京100012

浙昆的《壮哉少年》对话经典,寻绎经典作品内涵的舞台新密码,张扬昆曲传统的人文关怀。全剧以裴舜卿为主角,重新阐发李慧娘鬼魂复仇的故事,在历史真实和艺术虚构的交织中凸显思想性、传奇性和趣味性,青年的热血与悲壮、佞臣的奸诈与专横... 详细信息

浙昆的《壮哉少年》对话经典,寻绎经典作品内涵的舞台新密码,张扬昆曲传统的人文关怀。全剧以裴舜卿为主角,重新阐发李慧娘鬼魂复仇的故事,在历史真实和艺术虚构的交织中凸显思想性、传奇性和趣味性,青年的热血与悲壮、佞臣的奸诈与专横,在舞台上得到淋漓尽致的展现,充满道义和人性的光芒。全剧关注大众审美趣味,好看、通俗,富于诗意,呈现出鲜明的浙派风格。主演王恒涛脱颖而出,唱做念表形神兼备,本工、反串兼擅,为该戏增光添彩。新时代戏曲创作步入多元化格局,戏曲经典作品的多维阐释拓宽了戏曲创作边界,从方法论上为戏曲话语体系的构建提供了参考的价值。

关键词：复仇侠义传奇性浙派风格人文关怀

快速射电暴在时间-能量双变量空间中表现为布朗运动

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Science Bulletin 2024年第8期69卷 1020-1026页

作者：张永坤李菂冯毅王培牛晨辉代实姚菊枚蔡肇伟 national astronomical observatories Chinese Academy of SciencesBeijing 100101China Key Laboratory of Radio Astronomy and Technolgoy Chinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China Research Center for astronomical Computing Zhejiang LaboratoryHangzhou 311100China New Cornerstone Science Laboratory Shenzhen 518054China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Science Western Sydney UniversityPenrith NSW 2751Australia Xinjiang astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Key Laboratory of Radio Astronomy Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China

The origin of fast radio bursts(FRBs),the brightest cosmic explosion in radio bands,remains *** introduce here a novel method for a comprehensive analysis of active FRBs’behaviors in the timeenergy ***"Pincus Index"and"Maximum Lyapunov Exponent",we were able to quantify the randomness and chaoticity,respectively,of the bursting events and put FRBs in the context of common transient physical phenomena,such as pulsar,earthquakes,and solar *** the bivariate timeenergy domain,repeated FRB bursts’behaviors deviate significantly(more random,less chaotic)from pulsars,earthquakes,and solar *** waiting times between FRB bursts and the corresponding energy changes exhibit no correlation and remain unpredictable,suggesting that the emission of FRBs does not exhibit the time and energy clustering observed in seismic *** pronounced stochasticity may arise from a singular source with high entropy or the combination of diverse emission mechanisms/***,our methodology serves as a pragmatic tool for illustrating the congruities and distinctions among diverse physical processes.

关键词： Fast radio burst Earthquake Stochastic Chaos

Estimating Photometric Redshifts with Artificial Neural Networks and Multi-Parameters

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chinese Journal of Astronomy and Astrophysics 2007年第3期7卷 448-456页

作者： li-li li Yan-Xia Zhang {3.-Heng Zhao Da-Wei Yang national astronomical observatories Chinese Academy of Sciences Beijing 100012 College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016

We calculate photometric redshifts from the Sloan Digital Sky Survey Data Release 2 （SDSS DR2） Galaxy Sample using artificial neural networks （ANNs）. Different input sets based on various parameters （e.g. magnitude, color index, flux information） are explored. Mainly, parameters from broadband photometry are utilized and their performances in redshift prediction are compared. While any parameter may be easily incorporated in the input, our results indicate that using the dereddened magnitudes often produces more accurate photometric redshifts than using the Petrosian magnitudes or model magnitudes as input, but the model magnitudes are superior to the Petrosian magnitudes. Also, better performance resuits when more effective parameters are used in the training set. The method is tested on a sample of 79 3.6 galaxies from the SDSS DR2. When using 19 parameters based on the dereddened magnitudes, the rms error in redshift estimation is σz = 0.020184. The ANN is highly competitive tool compared to the traditional template-fitting methods when a large and representative training set is available.

关键词： galaxies fundamental parameters - techniques photometric - method dataanalysis

Intensity distribution function and statistical properties of fast radio bursts

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Research in Astronomy and Astrophysics 2017年第1期17卷 71-80页

作者： Long-Biao li yong-Feng Huang Zhi-Bin Zhang Di li Bing li School of Astronomy and Space Science Nanjing University Nanjing 210046 China Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education Nanjing210046 China Department of Physics College of Sciences Guizhou University Guiyang 550025 China national astronomical observatories Chinese Academy of Sciences Beijing 100012 China Key Laboratory for Radio Astronomy Chinese Academy of Sciences Nanjing 210008 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

Fast Radio Bursts （FRBs） are intense radio flashes from the sky that are characterized by mil- lisecond durations and Jansky-level flux densities. We carried out a statistical analysis on FRBs that have been discovered. Their mean dispersion measure, after subtracting the contribution from the interstellar medium of our Galaxy, is found to be ~ 660 pc cm-3. supporting their being from a cosmological origin. Their energy released in the radio band spans about two orders of magnitude, with a mean value of ~ 10-3. erg. More interestingly, although the study of FRBs is still in a very early phase, the published collection of FRBs enables us to derive a useful intensity distribution function. For the 16 non-repeating FRBs detected by the Parkes telescope and the Green Bank Telescope, the intensity distribution can be described as dN/dFobs = （4.1± 1.3. × 103.F-obs1.1±0.2 sky-1 d-l, where Fobs is the observed radio obs fluence in units of Jy ms. Here the power-law index is significantly flatter than the expected value of 2.5 for standard candles distributed homogeneously in a flat Euclidean space. Based on this intensity distribution function, the Five-hundred-meter Aperture Spherical radio Telescope （FAST） is predicted to be able to detect about five FRBs for every 1000 h of observation time.

关键词： pulsars general - stars neutron - radio continuum general - intergalactic medium -methods statistical

Automated estimation of stellar fundamental parameters from low resolution spectra: the PLS method

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Research in Astronomy and Astrophysics 2009年第6期9卷 712-724页

作者： Jian-Nan Zhang A-li Luo yong-Heng Zhao national astronomical observatories Chinese Academy of Sciences Beijing 100012 China

PLS （Partial Least Squares regression） is introduced into an automatic estimation of fundamental stellar spectral parameters. It extracts the most correlative spectral component to the parameters （Teff, log g and [Fe/H]）, and sets up a linear regression function from spectra to the corresponding parameters. Considering the properties of stellar spectra and the PLS algorithm, we present a piecewise PLS regression method for estimation of stellar parameters, which is composed of one PLS model for Teff, and seven PLS models for log g and [Fe/H] estimation. Its performance is investigated by large experiments on flux calibrated spectra and continuum normalized spectra at different signal-to-noise ratios （SNRs） and resolutions. The results show that the piecewise PLS method is robust for spectra at the medium resolution of 0.23.nm. For low resolution 0.5 nm and 1 nm spectra, it achieves competitive results at higher SNR. Experiments using ELODIE spectra of 0.23.nm resolution illustrate that our piecewise PLS models trained with MILES spectra are efficient for O ～ G stars： for flux calibrated spectra, the systematic offsets are 3.8%, 0.14 dex, and -0.09 dex for Teff, log g and [Fe/H], with error scatters of 5.2%, 0.44 dex and 0.3. dex, respectively; for continuum normalized spectra, the systematic offsets are 3.8%, 0.12dex, and -0.13.dex for Teff, log g and [Fe/H], with error scatters of 5.2%, 0.49 dex and 0.41 dex, respectively. The PLS method is rapid, easy to use and does not rely as strongly on the tightness of a parameter grid of templates to reach high precision as Artificial Neural Networks or minimum distance methods do.

关键词： methods data analysis -- methods statistical -- stars fundamental param- eters (classification, temperatures, metallicity) -- techniques spectroscopic -- surveys

The relative calibration of radial velocity for LAMOST medium resolution stellar spectra

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Research in Astronomy and Astrophysics 2021年第10期21卷 239-249页

作者： Jian-Ping Xiong Bo Zhang Chao liu Jiao li yong-Heng Zhao yong-Hui Hou Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101 China Yunnan observatories Chinese Academy of SciencesKunming 650011China Nanjing Institute of astronomical Optics&Technology National Astronomical ObservatoriesChinese Academy of SciencesNanjing 210042China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope(LAMOST)started a medianresolution spectroscopic(MRS,R~7500)survey since October *** main scientific goals of MRS,including binary stars,pulsators and other variable stars,were launched with a time-domain spectroscopic ***,the systematic errors,including the bias induced from wavelength calibration and the systematic difference between different spectrographs,have to be carefully considered during radial velocity *** this work,we provide a technique to correct the systematics in the wavelength calibration based on the relative radial velocity measurements from LAMOST MRS *** show that,for the stars with multi-epoch spectra,the systematic bias which is induced from the exposures on different nights can be corrected well for LAMOST MRS in each *** addition,the precision of radial velocity zero-point of multi-epoch time-domain observations reaches below 0.5 km s^(-1).As a by-product,we also give the constant star candidates^(**),which can be the secondary radial-velocity standard star candidates of LAMOST MRS time-domain surveys.

关键词： methods:data analysis techniques:radial velocities stars:statistics catalogs surveys

Calibration of the cryogenic measurement system of a resonant haloscope cavity

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chinese Physics C 2024年第7期48卷 31-37页

作者：贺冬樊洁高昕高宇 Nick Houston 姬忠庆金贻荣李闯李金勉李田军刘世航牛家树彭智慧孙亮孙铮王佳卫镨先吴利娜相忠诚杨峤立张驰张文星张欣郑东宁郑瑞丰周建勇 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Key Laboratory for Matter Microstructure and Function of Hunan ProvinceDepartment of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Institute of Physics Chinese Academy of SciencesBeijing 100190China College of Physics Sichuan UniversityChengdu 610065China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Institute of Theoretical Physics Faculty of ScienceBeijing University of TechnologyBeijing 100124China beijing academy of Quantum Information sciences Beijing 100193China College of Mechanical and Electrical Engineering Wuyi UniversityNanping 354300China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical sciences University of Chinese Academy of SciencesBeijing 100049China Institute of Theoretical Physics Shanxi UniversityTaiyuan 030006China College of Physics and Optoelectronic Engineering Department of PhysicsJinan UniversityGuangzhou 510632China School of sciences Xi'an Technological UniversityXi'an 710021China Tsung-Dao Lee Institute and School of Physics and Astronomy Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China national astronomical observatories Chinese Academy of Sciences20ADatun RoadChaoyang DistrictBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China

Possible light bosonic dark matter interactions with the Standard Model photon have been searched using microwave resonant *** this paper,we describe the cryogenic readout system calibration of a 7.13. GHz copper cavity with a loaded quality factor Q_(1)=10^(4)whose operation at a temperature of 22 mK is based on a dilution *** readout system consists of High Electron Mobility Transistors working as cryogenic amplifiers at 4 K,plus room-temperature amplifiers and a spectrum analyzer for signal power *** tested the system with a superconducting two-level system based on a single-photon source in the microwave frequency *** obtained an overall 95.6 dB system gain and–71.4 dB attenuation in the cavity's input *** effective noise temperature of the measurement system is 7.5 K.

关键词： dark matter superconducting two-level system Mollow triplet

The Jiao Tong University Spectroscopic Telescope Project

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astronomical Techniques and Instruments 2024年第1期1卷 16-30页

作者： JUST Team Chengze liu Ying Zu Fabo Feng Zhaoyu li Yu Yu Hua Bai Xiangqun Cui Bozhong Gu Yizhou Gu Jiaxin Han yonghui Hou Zhongwen Hu Hangxin Ji Yipeng Jing Wei li Zhaoxiang Qi Xianyu Tan Cairang Tian Dehua Yang Xiangyan Yuan Chao Zhai Congcong Zhang Jun Zhang Haotong Zhang Pengjie Zhang yong Zhang Yi Zhao Xianzhong Zheng Qingfeng Zhu Xiaohu Yang Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Department of Astronomy School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Nanjing Institute of astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China University of chinese academy of sciences NanjingNanjing 211135China University of chinese academy of sciences Beijing 101408China Lenghu Technology Innovation Industrial Park Management Committee Lenghu 817400China Shanghai astronomical Observatory Chinese Academy of SciencesShanghai 200030China Department of Astronomy University of Science and Technology of ChinaHefei 230026China national astronomical observatories Chinese Academy of SciencesBeijing 100101China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China

The Jiao Tong University Spectroscopic Telescope(JUST)is a 4.4-meter f/6.0 segmented-mirror telescope dedicated to spectroscopic *** JUST primary mirror is composed of 18 hexagonal segments,each with a diameter of 1.1 *** provides two Nasmyth platforms for placing science *** Nasmyth focus fits a field of view of 10′and the other has an extended field of view of 1.2°with correction optics.A tertiary mirror is used to switch between the two Nasmyth *** will be installed at a site at Lenghu in Qinghai Province,China,and will conduct spectroscopic observations with three types of instruments to explore the dark universe,trace the dynamic universe,and search for exoplanets:(1)a multi-fiber(2000 fibers)medium-resolution spectrometer(R=4000-5000)to spectroscopically map galaxies and large-scale structure;(2)an integral field unit(IFU)array of 500 optical fibers and/or a long-slit spectrograph dedicated to fast follow-ups of transient sources for multi-messenger astronomy;(3.a high-resolution spectrometer(R~100000)designed to identify Jupiter analogs and Earth-like planets,with the capability to characterize the atmospheres of hot exoplanets.

关键词： astronomical instrumentation Optical telescopes Large-scale structure of the universe Redshift surveys Time domain astronomy Exoplanet astronomy

Radio stars observed in the LAMOST spectral survey

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Research in Astronomy and Astrophysics 2017年第10期17卷 67-82页

作者： li-Yun Zhang Qiang Yue Hong-Peng Lu Xian-Ming L.Han yong Zhang Jian-Rong Shi Yue-Fei Wang yong-Hui Hou Zi-Huang Cao College of Physics/Department of Physics and Astronomy Guizhou University Department of Physics and Astronomy Butler University Nanjing Institute of astronomical Optics & Technology National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences

Radio stars have attracted astronomers＇ attention for several decades. To better understand the physics behind stellar radio emissions, it is important to study their optical behaviors. The LAMOST survey provides a large database for researching stellar spectroscopic properties of radio stars. In this work, we concentrate on their spectroscopic properties and infer physical properties from their spectra, such as stellar activity and variability. We mined big data from the LAMOST spectral survey Data Release 2 （DR2）, published on 2016 June 3., by cross-matching them with radio stars from FIRST and other surveys. We obtained 783.good stellar spectra with high signal to noise ratio for 659 stars. The criteria for selection were positional coincidence within 1.5＂ and LAMOST objects classified as stars. We calculated the equivalent widths （EWs） of the Ca II H＆K, HS, H＇7, H/3. Ha and Ca II IRT lines by integrating the line profiles. Using the EWs of the Ha line, we detected 147 active stellar spectra of 89 objects having emissions above the Ha continuum. There were also 3. objects with repeated spectra, 28 of which showed chromospheric activity variability. Furthermore, we found 14 radio stars emitting noticeably in the Ca II IRT lines. The low value of the EWs542/EWsags ratio for these 14 radio stars possibly alludes to chromospheric plage regions.

关键词： stars: chromosphere- stars: activity -- stars: radio -- stars: spectroscopic