分类： 天文学 >> 天文学 提交时间： 2023-02-19
Lei Qian
Zhichen Pan
Hongfei Liu
Hengqian Gan
Jinglong Yu
Lei Zhao
Jiguang Lu
Cun Sun
Jingye Yan
Peng Jiang
摘要： We present the estimation of the solar observation with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). For both the quite Sun and the Sun with radio bursts, when pointing directly to the Sun, the total power received by FAST would be out of the safe operational range of the signal chain, even resulting in the damage to the receiver. As a conclusion, the Sun should be kept at least $\sim 2^{\circ}$ away from the main beam during the observing at $\sim 1.25 {\ \rm GHz}$. The separation for lower frequency should be larger. For simplicity, the angular separation between the FAST beam and the Sun is suggested to be $\sim 5^{\circ}$ for observations on 200 MHz or higher bands.
分类： 天文学 >> 天文学 提交时间： 2023-02-19
Lei Qian
Zhichen Pan
Hongfei Liu
Hengqian Gan
Jinglong Yu
Lei Zhao
Jiguang Lu
Cun Sun
Jingye Yan
Peng Jiang
摘要： We present the estimation of the solar observation with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). For both the quite Sun and the Sun with radio bursts, when pointing directly to the Sun, the total power received by FAST would be out of the safe operational range of the signal chain, even resulting in the damage to the receiver. As a conclusion, the Sun should be kept at least $\sim 2^{\circ}$ away from the main beam during the observing at $\sim 1.25 {\ \rm GHz}$. The separation for lower frequency should be larger. For simplicity, the angular separation between the FAST beam and the Sun is suggested to be $\sim 5^{\circ}$ for observations on 200 MHz or higher bands.
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