检索结果-南通市图书馆

Fungal diversity notes 12.7-1386:taxonomic and phylogenetic contributions to fungal taxa

在线全文

学校读者我要写书评

暂无评论

Fungal Diversity 2020年第5期104卷 1-266页

作者： Hai-Sheng Yuan Xu Lu Yu-Cheng Dai Kevin D.Hyde Yu-He Kan Ivana Kušan Shuang-Hui He Ning-Guo Liu V.Venkateswara Sarma Chang-Lin Zhao Bao-Kai Cui Nousheen Yousaf Guangyu Sun Shu-Yan Liu Fang Wu Chuan-Gen Lin Monika C.Dayarathne Tatiana Baptista Gibertoni Lucas B.Conceição Roberto Garibay-Orijel Margarita Villegas-Ríos Rodolfo Salas-Lizana Tie-Zheng Wei Jun-Zhi Qiu Ze-Fen Yu Rungtiwa Phookamsak Ming Zeng Soumitra Paloi Dan-Feng Bao Pranami DAbeywickrama De-Ping Wei Jing Yang Ishara S.Manawasinghe Dulanjalee Harishchandra Rashika S.Brahmanage Nimali Ide Silva Danushka S.Tennakoon Anuruddha Karunarathna Yusufjon Gafforov Dhandevi Pem Sheng-Nan Zhang AndréL.C.Mde Azevedo Santiago Jadson Diogo Pereira Bezerra Bálint Dima Krishnendu Acharya Julieta Alvarez-Manjarrez Ali H.Bahkali Vinod K.Bhatt Tor Erik Brandrud Timur S.Bulgakov E.Camporesi Ting Cao Yu-Xi Chen Yuan-Yuan Chen Bandarupalli Devadatha Abdallah M.Elgorban Long-Fei Fan xing Du Liu Gao Camila Melo Gonçalves Luis F.P.Gusmão Naruemon Huanraluek Margita Jadan Ruvishika S.Jayawardena Abdul Nasir Khalid Ewald Langer Diogo X.Lima Nelson Correia de Lima-Júnior Carla Rejane Sousa de Lira Jian-Kui(Jack)Liu Shun Liu Saisamorn Lumyong Zong-Long Luo Neven Matočec M.Niranjan JoséRibamar Costa Oliveira-Filho Viktor Papp Eduardo Pérez-Pazos Alan J.L.Phillips Peng-Lei Qiu Yihua Ren Rafael F.Castañeda Ruiz Kamal C.Semwal Karl Soop Carlos A.Fde Souza Cristina Maria Souza-Motta Li-Hua Sun Meng-Le Xie Yi-Jian Yao Qi Zhao Li-Wei Zhou CAS Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyang 110164People’s Republic of China University of the Chinese Academy of Sciences Beijing 100049People’s Republic of China School of Ecology and Nature Conservation Beijing Advanced Innovation Center for Tree Breeding By Molecular DesignBeijing Forestry UniversityBeijing 100083People’s Republic of China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanPeople’s Republic of China Centre of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Mushroom Research Foundation 128 M.3 Ban Pa Deng T.Pa PaeA.Mae TaengChiang Mai 50150Thailand East and Central Asia Regional Office World Agroforestry Centre(ICRAF)Kunming 650201YunnanChina Ruđer Boškovićinstitute Bijenička cesta 5410000 ZagrebCroatia Faculty of Agriculture Natural Resources and EnvironmentNaresuan UniversityPhitsanulok 65000Thailand Department of Biotechnology School of Life SciencesPondicherry UniversityR.V.NagarKalapetPondicherry 605014India College of Biodiversity Conservation Southwest Forestry UniversityKunming 650224People’s Republic of China Department of Botany Govt.College UniversityKatchery RoadLahorePakistan State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection Northwest A&F UniversityYanglingShaanxiPeople’s Republic of China Laboratory of Plant Pathology College of Plant ProtectionJilin Agricultural UniversityChangchun 130118Jilin ProvincePeople’s Republic of China Centro de Biociências Departamento de MicologiaUniversidade Federal de PernambucoCidade UniversitáriaAvenida da Engenharia s/nRecifePernambuco 50740-600Brazil Departamento de Ciências Biológicas Universidade Estadual de Feira de SantanaAv.Transnordestina s/nNovo HorizonteFeira de SantanaBA 44036-900Brazil L

This is the twelfth contribution to the Fungal Diversity Notes series on fungal taxonomy,based on materials collected from many countries which were examined and described using the methods of morphology,anatomy,and strain culture,combined with DNA sequence analyses.110 taxa are described and illustrated,including five new genera,92.new species,eight new combinations and other taxonomic contributions(one new sequenced species,one new host and three new records)which are accommodated in 40 families and 1 incertae sedis in *** new genera are Amyloceraceomyces,Catenuliconidia,Hansenopezia,Ionopezia and *** new species are Amyloceraceomyces angustisporus,Amylocorticium ellipsosporum,Arthrinium sorghi,Catenuliconidia uniseptata,Clavulina sphaeropedunculata,Colletotrichum parthenocissicola,Coniothyrium triseptatum,Cortinarius indorusseus,***,***,***,***,Diaporthe pimpinel-lae,Dictyosporella guizhouensis,Diplodia torilicola,Fuscoporia marquesiana,***,Hansenopezia decora,Helicoarcta-tus thailandicus,Hirsutella hongheensis,Humidicutis brunneovinacea,Lentaria gossypina,***,Lycoperdon lahorense,***,Magnopulchromyces scorpiophorus,Moelleriella gracilispora,Neodevriesia manglicola,Neodidymelliopsis salvia,***,Neoroussoella magnoliae,Neottiella gigaspora,Ophiosphaerella chiangraiensis,Phaeotremella yunnanensis,Podosphaera yulii,Rigidoporus juniperinus,Rhodofomitopsis pseudofeei,Russula benghalensis,Scleroramularia vermispora,Scytinopogon minisporus,Sporormurispora paulsenii,Thaxteriellopsis obliqus,Tomentella asiae-orientalis,***,***,***,***,***,***,***,***,***-nocystidiata,***,***,***,***,***,***,***,***,***,***,***,***,***,***,***,

关键词： 110 taxa Agaricomycetes Ascomycota Basidiomycota Mucoromycota New combinations New genera New species Phylogeny Taxonomy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

相对论重离子碰撞中的喷注淬火和介质响应

中国科学:物理学、力学、天文学 2023年第9期53卷 2-22页

作者：畅宁波陈蔚贺亚运罗傲庞龙刚秦广友王恩科王新年邢文静杨梦权杨忠张本威张汉中赵文彬华中师范大学粒子物理研究所夸克与轻子物理教育部重点实验室武汉430079 信阳师范大学物理电子工程学院信阳464000 武汉科技大学理学院武汉430065 华南师范大学量子物质研究院广东省核物质科学与技术重点实验室广州510006 山东大学(青岛) 前沿交叉科学研究院青岛266237 韦恩州立大学物理与天文系美国底特律48201

本文简要回顾近年来在相对论重离子碰撞中喷注与夸克胶子等离子体相互作用方面的一些研究工作和进展,主要讨论以下4个方面:领头强子、整体喷注、重味夸克和介质响应.大横动量领头强子谱的压低是喷注淬火研究中最早被关注的观测量之一.... 详细信息

本文简要回顾近年来在相对论重离子碰撞中喷注与夸克胶子等离子体相互作用方面的一些研究工作和进展,主要讨论以下4个方面:领头强子、整体喷注、重味夸克和介质响应.大横动量领头强子谱的压低是喷注淬火研究中最早被关注的观测量之一.在大横动量区间,系统研究了喷注淬火对部分子味道的依赖性,细致考虑了高能夸克和胶子对轻强子和重味强子的产生和核压低的贡献.在中低横动量区间,发现夸克组合机制和非微扰相互作用对解释轻强子和重味强子的核修正因子与椭圆流数据至关重要.整体喷注是近年来喷注淬火研究中的一个热点.利用贝叶斯分析研究了单举喷注和光子-喷注的横动量谱压低效应,定量提取了整体喷注的能量损失及其分布.系统性地研究了整体喷注的内部结构,如喷注形状函数、喷注腰围和喷注横动量弥散、整饰喷注的劈裂函数和劈裂半径、重组大半径喷注以及喷注内重味强子的径向分布等.介质响应一直是喷注淬火研究中的一个重点和难点.喷注在夸克胶子等离子体中的能动量损失会在喷注的传输方向激发出马赫锥等效应,同时在后方会产生扩散尾流.细致研究了介质响应对喷注周围的能量分布以及重子介子产额比的影响;提出了在光子或Z玻色子标记的喷注事例中探测扩散尾流的二维和三维结构的新方法.

关键词：相对论重离子碰撞夸克胶子等离子体喷注淬火重味夸克介质响应

α-cluster decay from ^(2.)Mg resonances produced in the ^(12.C(^(16)O,^(2.)Mg)α reaction

在线全文

学校读者我要写书评

暂无评论

Chinese physics C 2023年第1期47卷 135-140页

作者：王东玺叶沿林林承键陈家豪马凯韩家兴贾会明杨磊阳黎升胡梓瑶陈莹蒲伟良李根谭智威朱宏渝骆天鹏钟善豪黄大湖楼建玲杨晓菲李奇特许金艳杨再宏魏康 School of physics and State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBejing 100871China china institute of Atomic Energy Beijing 102413China

A transfer reaction and cluster-decay experiment,12.(16O,2.Mg→ α+2.Ne)α, was performed at a beam energy of 96 MeV. Both recoil and decay α particles were detected in coincidence, allowing us to deduce the energymomentum of a2.Ne fragment. A number of resonant states of2.Mg were reconstructed up to an excitation energy of approximately 30 MeV. Owing to the experimentally achieved excellent resolutions of the Q-value and excitationenergy spectra, the relative decay widths for each resonant state in2.Mg to various final states of2.Ne were extracted, along with the total decay width. The obtained results provide good testing ground for theoretical descriptions of multiple clustering configurations in2.Mg.

关键词： reaction Q-value transfer reaction cluster decay relative decay width

全息影像术中导航在泌尿外科腹腔镜和机器人手术中的应用价值

在线全文

学校读者我要写书评

暂无评论

中华泌尿外科杂志 2020年第2期41卷 131-137页

作者：朱刚邢金春翁国斌胡志全李宁忱朱鹤高平生王志华朱伟智张凯李鸿波吴准朱瑞魏希锋王亚楠谢群傅斌王行环齐琳姚欣潘铁军王德林刘南邱剑光杨江根张保刘卓炜韩辉李刚张滨那曼丽陆菁菁汪磊赵子臣那彦群北京和睦家医院泌尿外科 100015 厦门大学附属第一医院泌尿外科 361003 宁波市鄞州第二医院泌尿外科 315192 华中科技大学同济医学院附属同济医院泌尿外科武汉430030 北京大学首钢医院吴阶平泌尿外科医学中心 100144 宁夏回族自治区人民医院泌尿外科银川750002 珠海市人民医院泌尿外科 519000 南昌大学第一附属医院泌尿外科南昌330006 武汉大学中南医院泌尿外科武汉430071 w中南大学湘雅医院泌尿外科长沙410008 n天津医科大学附属肿瘤医院泌尿外科 300060 解放军中部战区总医院泌尿外科武汉430070 重庆医科大学附属第一医院泌尿外科 400016 重庆大学附属肿瘤医院泌尿外科 400030 中山大学附属第六医院泌尿外科广州510655 深圳市罗湖区人民医院泌尿外科 518000 n航天中心医院泌尿外科北京100049 中山大学肿瘤防治中心泌尿外科广州510060 天津医科大学第二医院泌尿外科 300211 北京大学首钢医院医学影像科 100144 北京和睦家医院影像科 100015

目的探讨全息影像术中导航在泌尿外科腹腔镜和机器人手术中的应用价值。方法回顾性分析2.19年1—12.北京和睦家医院等19家医疗中心收治的86例患者的病例资料,临床诊断包括肾肿瘤78例,膀胱癌2.,肾上腺肿瘤2.,肾囊肿1例,前列腺癌1例,... 详细信息

目的探讨全息影像术中导航在泌尿外科腹腔镜和机器人手术中的应用价值。方法回顾性分析2.19年1—12.北京和睦家医院等19家医疗中心收治的86例患者的病例资料,临床诊断包括肾肿瘤78例,膀胱癌2.,肾上腺肿瘤2.,肾囊肿1例,前列腺癌1例,汗腺癌淋巴结转移1例,根治性膀胱切除术后盆腔转移瘤1例。其中,32.接受标准腹腔镜手术,分别为肾部分切除术(LPN)2.例,根治性前列腺切除术1例,根治性膀胱切除术2.,肾上腺肿瘤切除术2.;54例接受达芬奇机器人手术,分别为肾部分切除术(RAPN)51例,腹膜后淋巴结清扫术1例,双侧肾囊肿去顶减压术1例,盆腔转移肿瘤切除术1例。两种术式的肾部分切除术患者中41例有可统计的临床数据,其中RAPN 2.例,LPN 18例。男2.例,女15例;中位年龄53.5(2.~76)岁;中位R.E.N.A.L评分7.8(4~11)分。专业工程师根据86例术前增强CT检查图像和诊断报告重建全息影像。术前,全息影像可帮助术者对供应肿瘤或手术切除部位的动静脉血管、淋巴结和神经的立体空间结构及相互关系有更直观的认识,协助术前手术规划。在术中将全息影像与腹腔镜监视器中的术野图像进行实时追踪和融合,实现术中导航。结果本组86例手术均顺利完成。术中通过人工调整全息影像,可提示重要血管如肾动脉和肾静脉在体内的投影位置,帮助术者定位血管、淋巴结和其他重要解剖结构的位置,便于精准分离。本研究采用标准腹腔镜手术和达芬奇机器人手术的肾部分切除术患者中共41例有可统计的临床数据。41例中位手术时间140(50~2.5)min,其中RAPN为140(50~2.5)min,LPN为160(80~2.5)min;中位热缺血时间2.(14~60)min,其中RAPN为2.(17~40)min,LPN为2.(14~60)min;中位出血量80(5~12.0)ml,其中RAPN为150(30~12.0)ml,LPN为50(5~12.0)ml。术中无周围重要脏器损伤。2.LPN患者出现ClavienⅡ级并发症,1例出血12.0 ml给予输血,另一例血肿未予处理,自行吸收。此2.分别为前、后肾门肿瘤,R.E.N.A.L评分均为11分。结论全息影像术中导航可协助术者在腹腔镜和机器人手术中对重要的解剖结构进行定位、识别,在减少术中组织和器官损伤、降低手术并发症和提高手术成功率方面有重要的应用价值。

关键词：腹腔镜三维影像重建全息影像腹腔镜手术机器人手术

Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： xing-Yan Liu Yi-Wei Yang Rong Liu Jie Wen Zhong-Wei Wen Zi-Jie Han Zhi-Zhou Ren Qi An Huai-Yong Bai Jie Bao Ping Cao Qi-Ping Chen Yong-Hao Chen Pin-Jing Cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Feng-Qin Guo Chang-Cai Han Guo-Zhu He Yong-Cheng He Yue-Feng He Han-Xiong Huang Wei-Ling Huang Xi-Ru Huang Xiao-Lu Ji Xu-Yang Ji Hao-Yu Jiang Wei Jiang Han-Tao Jing Ling Kang Ming-Tao Kang Bo Li Lun Li Qiang Li Xiao Li Yang Li Yang Li Shu-Bin Liu Guang-Yuan Luan Ying-Lin Ma Chang-Jun Ning Bin-Bin Qi Jie Ren Xi-Chao Ruan Zhao-Hui Song Hong Sun Xiao-Yang Sun Zhi-Jia Sun Zhi-Xin Tan Hong-Qing Tang Jing-Yu Tang Peng-Cheng Wang Qi Wang Tao-Feng Wang Yan-Feng Wang Zhao-Hui Wang Zheng Wang Qing-Biao Wu Xiao-Guang Wu Xuan Wu Li-Kun Xie Han Yi Li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang Jing Zhang Lin-Hao Zhang Li-Ying Zhang Qing-Min Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Ying-Tan Zhao Liang Zhou Zu-Ying Zhou Dan-Yang Zhu Ke-Jun Zhu Peng Zhu institute of Nuclear physics and Chemistry China Academy of Engineering Physics State Key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern physics University of Science and Technology of China State Key Laboratory of Nuclear physics and technology School of PhysicsPeking University Key Laboratory of Nuclear Data China Institute of Atomic Energy institute of High Energy physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South china Northwest institute of Nuclear technology Department of Engineering and applied physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 2. MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the china Spallation Neutron Source. A multilayer fast fission chamber with 2.5U and 2.8U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–2. MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^2.5U cells are in good agreement with the results obtained using 2.8U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

Charge-changing cross section measurements of 300 MeV/nucleon^(2.)Si on carbon and data analysis

在线全文

学校读者我要写书评

暂无评论

中国物理C:英文版 2023年第8期47卷 13-21页

作者：王长建郭戈王惠仁宋雨楠孙保华谷畑勇夫寺嶋知魏秀琳徐俊瑶徐晓栋张寂潮郑勇竺礼华曹勇樊广伟高丙水韩加星李光帅鲁辰桂齐浩天秦赟孙志宇万鲁平王凯龙王世陶王昕旭张湄雪张文文张小彬章学恒周子铖 School of physics Beihang UniversityBeijing 100191China institute of Modern physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and technology University of Chinese Academy of SciencesBeijing 100049China School of Chemical Engineering Anhui University of Science and TechnologyHuainan 232001China

Charge-changing cross section(σcc)measurements via the transmission method have recently seen significant progress with the aim of determining the charge radii of exotic *** this work,we report a newσcc measurement of 304(9)MeV/nucleon^(2.)Si on carbon at the second Radioactive Ion Beam Line in Lanzhou(RIBLL2.and describe the data analysis procedure in *** procedure is essential for evaluating the systematic uncertainty in the transmission *** determinedσcc of 112.(11)mb is found to be consistent with the existing data at similar *** present work will serve as a reference forσcc determinations at RIBLL2.

关键词： projectile fragmentation transmission method charge-changing cross section particle identi-fication

在线全文

学校读者我要写书评

暂无评论

首次全束组六通柱腔内爆物理实验

强激光与粒子束 2018年第11期30卷 1-2页

作者：董云松李欣杨家敏黄天晅缪文勇况龙钰景龙飞唐琦彭晓世陈家斌宋仔峰张兴董建军杨志文邓博陈韬邓克立王强强孙奥杨轶濛刘祥明李朝光梁志远陈忠靖尹传盛蒋炜杨冬王峰邹游康洞国郑无敌邹士阳丁永坤江少恩张保汉中国工程物理研究院激光聚变研究中心四川绵阳621900 北京应用物理与计算数学研究所北京100088

六通黑腔是我国独立自主设计的新型激光惯性约束聚变驱动腔型。在大型激光装置上采用全束组注入方式,首次获得了新型六通黑腔10～2.倍收缩比综合内爆完整配套实验数据,实现最高YOC2.(实验产额/二维模拟产额)达80.4%的综合内爆性能。

关键词：激光间接驱动六通黑腔内爆

Evidence for particle acceleration approaching PeV energies in the W51 complex

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.J.Bi Y.J.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao J.Chang J.F.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.J.Chen M.L.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.L.Chen Y.Chen N.Cheng Y.D.Cheng M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan J.H.Fan Y.Z.Fan J.Fang J.H.Fang K.Fang C.F.Feng H.Feng L.Feng S.H.Feng X.T.Feng Y.Feng Y.L.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu D.H.Huang T.Q.Huang W.J.Huang X.T.Huang X.Y.Huang Y.Huang X.L.Ji H.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov B.B.Li C.M.Li Cheng Li Cong Li D.Li F.Li H.B.Li H.C.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li X.R.Li Xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.F.Liang S.J.Lin B.Liu C.Liu D.Liu D.B.Liu H.Liu H.D.Liu J.Liu J.L.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao Z.Min W.Mitthumsiri H.J.Mu Y.C.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun J.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang J.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.Xi J.Xia G.M.Xiang D.X.Xiao G.Xiao Y.L.Xin Y.xing D.R.Xiong Z.Xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.H.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H.Yu Q.Yuan H.Yue H.D.Zeng T.X.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang H.Zhang 不详 Key Laboratory of Particle Astrophysics&Experimental physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina Dublin institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear physics P.O.Box 103980Heidelberg 69029Germany School of Physical Science and technology&School of Information Science and technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee institute&School of physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China institute for Nuclear Research of Russian Academy of Sciences Moscow 117312Russia Hebei Normal University Shijiazhuang 050024China University of Science and technology of china Hefei 230026China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of physics and Astronomy(Zhuhai)&School of physics(Guangzhou)&Sino-French {2. of Nuclear Engineering and technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(CRs)accelerated by the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for CRs remains *** on observations conducted with the Large High Altitude Air Shower Observatory(LHAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2.to 2.0 *** LHAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~2.0 TeV in the CR proton spectrum,most likely providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two young star clusters within W51B could also be theoretically viable to produce the most energeticγrays observed by *** findings strongly support the presence of extreme CR accelerators within the W51 complex and provide new insights into the origin of Galactic CRs.

关键词： UHE c-ray Cosmic rays SNR W51C Star clusters

由超拍电子伏特加速器产生的超高能伽马射线气泡

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第4期69卷 449-457页

作者： LHAASO Collaboration Zhen Cao Chuandong Gao Cong Li Ruo-Yu Liu Ruizhi Yang 不详 Key Laboratory of Particle Astrophyics&Experimental physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduChina institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China University of Science and technology of china Hefei 230026China

We report the detection of aγ-ray bubble spanning at least 100deg2.in ultra-high energy(UHE)up to a few PeV in the direction of the star-forming region Cygnus X,implying the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon indexΓ(E)=(2.71±0.02.+(0.11±0.02.×log10(E/10 TeV)is found fitting the gamma-ray energy spectrum of the bubble *** sources,“hot spots”correlated with very massive molecular clouds,and a quasi-spherical amorphousγ-ray emitter with a sharp central brightening are observed in the *** the core of~0.5°,spatially associating with a region containing massive OB association(Cygnus OB2.and a microquasar(Cygnus X-3),as well as previously reported multi-TeV sources,an enhanced concentration of UHEγ-rays is observed with 2.photons at energies above 1 *** general feature of the bubble,the morphology,and the energy spectrum,are reasonably reproduced by the assumption of a particle accelerator in the core,continuously injecting protons into the ambient medium.

关键词： Cosmic rays γ-rays Interstellar medium Star cluster