Detectability of southern gamma-ray sources beyond 100 TeV with ALPAQUITA, the prototype experiment of ALPACA-猫眼课题宝

DOI：

10.1007/s10686-021-09796-8

发表时间：

2021-09

期刊：

Experimental Astronomy

影响因子：

通讯作者：

中科院分区：

物理与天体物理4区

文献类型：

作者：

S.Kato;C.A.H.Condori;E.dela Fuente;A. Gomi;K. Hibino;N. Hotta;I. Toledano–Juárez;Y. Katayose;C. Kato;K. Kawata;W. Kihara;Y. Ko;T. Koi;H. Kojima;D. Kurashige;J. Lozoya;F. Orozco-Luna;R. Mayta;P. Miranda;K. Munakata;H. Nakada;Y. Nakamura;Y. Nakazawa;C. Nina;M. Nishizawa;S. Ogio;M. Ohnishi;T. Ohura;S. Okukawa;A. Oshima;M. Raljevich;H. Rivera;T. Saito;T. Sako;T. Sako;S. Shibata;A. Shiomi;M. Subieta;N. Tajima;W.Takano;M. Takita;Y. Tameda;K. Tanaka;R. Ticona;H. Torres;H. Tsuchiya;Y. Tsunesada;S. Udo;K. Yamazaki;Y. Y. I. F. C. R. Research-Y.;Instituto de Investigaciones F'isicas;Universidad Mayor de San Andres;D. D. F'isica-D.;Cucei;Universidad de Guadalajara;Doctorado en Tecnolog'ias de la Informaci'on;Cucea;Maestr'ia en Ciencia de Datos;Graduate School of Science;Yokohama National University;Faculty of Electrical Engineering;Kanagawa University;Faculty of Education;Utsunomiya University;Doctorado en Ciencias F'isicas;Department of Applied Physics;Shinshu University;College of Engineering;Chubu University;Chubu Innovative Astronomical Observatory;Departamento de Ciencias de la Informaci'on y Desarrollo Tecnol'ogico-Departamento-de-Ciencias-de-la-Informaci'on-y-2264768969;Cutonala;Graduate School of Science;O. University;Nambu Yoichiro Institute of Theoretical;E. Physics;Institute of Theoretical Physics;Chinese Academy of Science.;College of Industrial Technology;Nihon University;Narashino;National Institute of Informatics;Tokyo Institute of Technology;Institute of Physical;Chemical Research;O. University;G. S. O. Sciences;Hroshima City University;Coordinaci'on General de Servicios Administrativos e Infraestruc Tecnol'ogica-Coordinaci'on-General-de-Servicios-Administrativos-2264869021;Japan Atomic Energy Agency

安第斯山脉宇宙射线物理学和天文学大面积PArticle探测器（ALPACA）是一项国际实验，应用南方甚高能伽马射线天文学来确定膝能区（1015 eV − 1016 eV）周围宇宙射线的起源。该实验由一个面积为83,000平方米的空气簇射（AS）阵列和一个面积为5,400平方米的地下水切伦科夫μ子探测器（MD）阵列组成。实验地点在Mt.位于玻利维亚拉巴斯的查卡尔塔亚高原，海拔4,740米，相当于572 g/cm 2的大气厚度。作为ALPACA的原型实验，ALPAQUITA实验的目标是在2021年底开始数据采集。ALPAQUITA阵列由一个较小的AS阵列（18，450平方米）和地下MD（900平方米）组成，目前正在建设中。ALPAQUITA的伽马射线源的灵敏度进行评估与蒙特卡罗模拟。模拟结果表明，H.E.S.S.在一个日历年的观测中，ALPAQUITA将探测到10 TeV以上的HAWC实验，而这五个实验中的一个- HESS J1702- 420 A-超过300 TeV。后者的发现意味着，可以根据这一原型实验的观测结果，对来自南方源的100 TeV以上伽马射线的发射机制进行科学讨论。

Andes Large-area PArticle detector for Cosmic-ray physics and Astronomy (ALPACA) is an international experiment that applies southern very-high-energy (VHE) gamma-ray astronomy to determine the origin of cosmic rays around the knee energy region (1015eV − 1016eV). The experiment consists of an air shower (AS) array with a surface of 83,000m2and an underground water Cherenkov muon detector (MD) array covering 5,400m2. The experimental site is at the Mt. Chacaltaya plateau in La Paz, Bolivia, with an altitude of 4,740m corresponding to 572g/cm2atmospheric thickness. As the prototype experiment of ALPACA, the ALPAQUITA experiment aims to begin data acquisition in late 2021. The ALPAQUITA array consists of a smaller AS array (18,450m2) and underground MD (900m2), which are now under construction. ALPAQUITA’s sensitivity to gamma-ray sources is evaluated with Monte Carlo simulations. The simulation finds that five gamma-ray sources observed by H.E.S.S. and HAWC experiments will be detected by ALPAQUITA beyond 10TeV and ne out of these five - HESS J1702-420A - above 300 TeV in one calendar year observation. The latter finding means that scientific discussions can be made on the emission mechanism of gamma rays beyond 100TeV from southern sources on the basis of the observational results of this prototype experiment.

Detectability of southern gamma-ray sources beyond 100 TeV with ALPAQUITA, the prototype experiment of ALPACA

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