Search for point sources of ultra-high-energy photons with the Telescope Array surface detector-猫眼课题宝

DOI：

10.1093/mnras/stz3618

发表时间：

2019-03

期刊：

Monthly Notices of the Royal Astronomical Society

影响因子：

4.8

通讯作者：

中科院分区：

物理与天体物理2区

文献类型：

作者：

R. Abbasi;M. Abe;T. Abu-Zayyad;M. Allen;R. Azuma;E. Barcikowski;J. Belz;D. Bergman;S. Blake;R. Cady;B. Cheon;J. Chiba;M. Chikawa;A.diMatteo;T. Fujii;K. Fujita;R. Fujiwara;M. Fukushima;G. Furlich;W. Hanlon;M. Hayashi;Y. Hayashi;N. Hayashida;K. Hibino;K. Honda;D. Ikeda;N. Inoue;T. Ishii;R. Ishimori;H. Ito;D. Ivanov;H. Jeong;S. Jeong;C. Jui;K. Kadota;F. Kakimoto;O. Kalashev;K. Kasahara;H. Kawai;S. Kawakami;S. Kawana;K. Kawata;E. Kido;H. Kim;J. H. Kim;S. Kishigami;S. Kitamura;Y. Kitamura;V. Kuzmin;Mikhail V. Kuznetsov;Y. Kwon;K. H. Lee;B. Lubsandorzhiev;J. Lundquist;K. Machida;K. Martens;T. Matsuyama;J. Matthews;R. Mayta;M. Minamino;K. Mukai;I. Myers;K. Nagasawa;S. Nagataki;K. Nakai;R. Nakamura;T. Nakamura;T. Nonaka;H. Oda;S. Ogio;J. Ogura;M. Ohnishi;H. Ohoka;T. Okuda;Y. Omura;M. Ono;R. Onogi;A. Oshima;S. Ozawa;I. H. Park;M. Pshirkov;J. Remington;D. Rodriguez;G. Rubtsov;D. Ryu;H. Sagawa;R. Sahara;K. Saito;Y. Saito;N. Sakaki;T. Sako;N. Sakurai;L. Scott;T. Seki;K. Sekino;P. Shah;F. Shibata;T. Shibata;H. Shimodaira;B. Shin;H. Shin;J. Smith;P. Sokolsky;B. Stokes;S. Stratton;T. Stroman;T. Suzawa;Y. Takagi;Y. Takahashi;M. Takamura;M. Takeda;R. Takeishi;A. Taketa;M. Takita;Y. Tameda;H. Tanaka;Kiyoshi Tanaka;M. Tanaka;Y. Tanoue;S. Thomas;G. Thomson;P. Tinyakov;I. Tkachev;H. Tokuno;T. Tomida;S. Troitsky;Y. Tsunesada;K. Tsutsumi;Y. Uchihori;S. Udo;F. Urban;T. Wong;K. Yada;M. Yamamoto;H. Yamaoka;K. Yamazaki;J. Yang;K. Yashiro;H. Yoshii;Y. Zhezher;Z. Zundel

望远镜阵列（TA）实验的表面探测器（SD）使我们能够间接探测能量为1018 eV或更高的光子，并将光子从宇宙射线背景中分离出来。在本文中，我们提出了一个超高能（UHE）光子在北方天空中使用TA SD数据的点源盲搜索的结果。光子引起的广泛的空气簇射的强子引起的广泛的空气簇射背景分离的多元分类器的基础上的16个参数，表征的空气簇射事件。没有发现光子点源的显著证据。根据实验对光子的角分辨率，对TA视场内来自天空中每个特定方向的光子通量设定了上限。能量大于1018、1018.5、1019、1019.5和1020 eV的点源光子通量的平均95%置信水平上限分别为0.094、0.029、0.010、0.0073和0.0058 km− 2 yr −1。对于高于1018.5 eV的能量，光子点源的限制是第一次设置。作为对本文的补充，给出了每个能量范围内每个给定方向的数值结果。

The surface detector (SD) of the Telescope Array (TA) experiment allows us to detect indirectly photons with energies of the order of 1018 eV and higher, and to separate photons from the cosmic ray background. In this paper, we present the results of a blind search for point sources of ultra-high-energy (UHE) photons in the Northern sky using the TA SD data. The photon-induced extensive air showers are separated from the hadron-induced extensive air shower background by means of a multivariate classifier based upon 16 parameters that characterize the air shower events. No significant evidence for the photon point sources is found. The upper limits are set on the flux of photons from each particular direction in the sky within the TA field of view, according to the experiment’s angular resolution for photons. The average 95 per cent confidence level upper-limits for the point-source flux of photons with energies greater than 1018, 1018.5, 1019, 1019.5 and 1020 eV are 0.094, 0.029, 0.010, 0.0073 and 0.0058 km−2yr−1, respectively. For energies higher than 1018.5 eV, the photon point-source limits are set for the first time. Numerical results for each given direction in each energy range are provided as a supplement to this paper.

Search for point sources of ultra-high-energy photons with the Telescope Array surface detector

文献摘要

相似文献