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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2408.00026 |
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| _version_ | 1866913454243184640 |
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| author | Feng, Wen-Cheng Jia, Shu-Mei Zhao, Hai-Hui Yu, Heng Pan, Hai-Wu Li, Cheng-Kui Cheng, Yu-Lin Weng, Shan-Shan Chen, Yong Liu, Yuan Ling, Zhi-Xing Zhang, Chen |
| author_facet | Feng, Wen-Cheng Jia, Shu-Mei Zhao, Hai-Hui Yu, Heng Pan, Hai-Wu Li, Cheng-Kui Cheng, Yu-Lin Weng, Shan-Shan Chen, Yong Liu, Yuan Ling, Zhi-Xing Zhang, Chen |
| contents | 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 $\sim$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 $2.1^{+0.3}_{-0.1}$ keV, which is consistent with the XMM-Newton results ($\sim$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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_00026 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Study of Wide-Field-of-View X-ray Observations of the Virgo Cluster Using the Lobster Eye Imager for Astronomy Feng, Wen-Cheng Jia, Shu-Mei Zhao, Hai-Hui Yu, Heng Pan, Hai-Wu Li, Cheng-Kui Cheng, Yu-Lin Weng, Shan-Shan Chen, Yong Liu, Yuan Ling, Zhi-Xing Zhang, Chen High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics 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 $\sim$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 $2.1^{+0.3}_{-0.1}$ keV, which is consistent with the XMM-Newton results ($\sim$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. |
| title | Study of Wide-Field-of-View X-ray Observations of the Virgo Cluster Using the Lobster Eye Imager for Astronomy |
| topic | High Energy Astrophysical Phenomena Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2408.00026 |