arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2310.04746astro-ph.IMastro-ph.EPastro-ph.SRphysics.ao-ph
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埃及新型地面望远镜的多参数研究

Multi-parameter study for a new Ground-Based telescope in Egypt

Mohamed S. Darwish, Hazem Badreldin, Nasser M. Ahmed, Mostafa Morsy, E. E. Kohil, Hany M. Hassan, I. Helmy, Ahmed shokry, M. A. Hassan, S. M. Saad, G. M. Hamed,… 展开作者

Mohamed S. Darwish, Hazem Badreldin, Nasser M. Ahmed, Mostafa Morsy, E. E. Kohil, Hany M. Hassan, I. Helmy, Ahmed shokry, M. A. Hassan, S. M. Saad, G. M. Hamed, Z. F. Ghatass, S. A. Ata

AI总结:

本研究针对埃及新型光学/红外天文望远镜的7个候选台址,结合气象、夜空亮度、地震灾害多参数开展分析,最终筛选出西奈半岛南部和红海山脉地区2个最优台址。

摘要:

本研究开展了多参数分析,以评估气象参数、夜空亮度和地震灾害对埃及新型光学/红外天文望远镜拟建台址的影响。研究采用ERA5再分析数据集获取以下气象参数:总云量分数、可降水量、相对湿度、风速与风向以及气温。为估算气溶胶光学厚度,我们使用了现代研究与应用回顾分析第2版(Modern-Era Retrospective analysis for Research and Applications version 2, MERRA-2)。候选台址的光污染通过可见光红外成像辐射仪套件(Visible Infrared Imaging Radiometer Suite, VIIRS)昼夜波段(Day Night Band, DNB)进行测量。研究采用基于物理的地震动方法计算了以最大加速度和反应谱表示的地震输入,以评估地震灾害,进而为拟建台址确定抗震结构的设计,从而能够评估候选台址的地震灾害。在7个提名台址中,有2个台址的测量结果最佳,可被视为埃及新型天文望远镜的未来台址。第一个台址位于西奈半岛南部,第二个台址位于红海山脉地区。

英文摘要:

A multi-parameter analysis was conducted to evaluate the impact of meteorological parameters, night sky brightness and seismic hazard on proposed sites for the new optical/infrared Egyptian astronomical telescope. The ERA5 reanalysis data set is used to get the following meteorological parameters: Total cloud coverage fraction, precipitable water vapor, relative humidity, wind speed & direction and Air temperature. To estimate the aerosol optical depth we used the Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2). Light pollution over the candidate sites was measured from Visible Infrared Imaging Radiometer Suite (VIIRS) Day Night Band (DNB). The seismic input in terms of maximum acceleration and response spectra were computed using a physics-based ground motion approach to assess the seismic hazards and consequently the designation of seismic resistant structure for the proposed sites to be able to assess the seismic hazards for the candidate sites. Of the seven nominated sites, two sites are found to have the best measurements and might be considered future sites for the new Egyptian Astronomical telescope. The first site is located in the south of the Sinai peninsula, while the second one is located in the Red Sea mountains region.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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