Study of Wide-Field-of-View X-ray Observations of the Virgo Cluster Using the Lobster Eye Imager for Astronomy

被引：0

作者：

Feng, Wen-Cheng ^{[1
,2
,3
]}

Jia, Shu-Mei ^{[3
]}

Zhao, Hai-Hui ^{[1
,2
]}

Yu, Heng ^{[4
]}

Pan, Hai-Wu ^{[5
]}

Li, Cheng-Kui ^{[3
]}

Cheng, Yu-Lin ^{[6
]}

Weng, Shan-Shan ^{[1
,2
]}

Chen, Yong ^{[3
]}

Liu, Yuan ^{[5
]}

Ling, Zhi-Xing ^{[5
]}

Zhang, Chen ^{[5
]}

机构：

[1] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Peoples R China

[2] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Peoples R China

[3] Chinese Acad Sci, Key Lab Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China

[4] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China

[5] Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China

[6] Yunnan Univ, Dept Astron, Kunming 650091, Peoples R China

来源：

UNIVERSE | 2024年 / 10卷 / 07期

基金：

美国国家科学基金会; 美国国家航空航天局; 中国国家自然科学基金;

关键词：

wide-field telescopes; X-ray telescopes; Virgo; ALL-SKY MONITOR; TEMPERATURE STRUCTURE; MICROCHANNEL PLATES; GALAXIES; ROSAT; M-87;

D O I：

10.3390/universe10070300

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Lobster Eye Imager for Astronomy (LEIA) is the pathfinder of the wide-field X-ray telescope used in the Einstein Probe mission. In this study, we present an image of the Virgo Cluster taken by LEIA in the 0.5-4.5 keV band with an exposure time of similar to 17.3 ks in the central region. This extended emission is generally consistent with the results obtained by ROSAT. However, the field is affected by bright point sources due to the instrument's Point Spread Function (PSF) effect. Through fitting of the LEIA spectrum of the Virgo Cluster, we obtained a temperature of 2.1-0.1+0.3 keV, which is consistent with the XMM-Newton results (similar to 2.3 keV). Above 1.6 keV, the spectrum is dominated by the X-ray background. In summary, this study validates LEIA's extended source imaging and spectral resolution capabilities for the first time.

引用

页数：9

共 5 条

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