秘鲁的CALLISTO设施：光谱仪调试和III型太阳射电爆发的观测
CALLISTO Facilities in Peru: Spectrometers Commissioning and Observations of Type III Solar Radio Bursts
摘要：
航天委天体物理局在秘鲁利马安装了属于e-CALLISTO网络的两个无线电分光计站。由于其靠近赤道的战略位置，全年都可以均匀地观察太阳。位于首都利马附近的Pucusana的接收器从2014年10月到2016年8月在公制和分米制波段收集数据，寻找无线电爆发。在此期间，这款e-CALLISTO探测器在时区覆盖方面是独一无二的。为了评估地点的适用性和天线的性能，我们分析了无线电环境背景，并测量了它们的辐射模式和波束宽度。为了展示这些设施在这些射频中研究太阳动力学的能力，我们选择并分析了III型太阳射电爆发。对这类爆发的研究有助于了解穿过日冕的电子束和太阳大气密度。我们的特点是最常见的无线电突发具有以下平均值：负漂移率为-25.8 $\pm$ 3.7 MHz/s，持续时间为2.6 $\pm$ 0.3 s和35 MHz带宽的频率范围内的114至174 MHz。此外，对于某些事件，可以计算平均为0.4 $\pm$ 0.1 MHz/s的全局频率漂移。
英文摘要：
The Astrophysics Directorate of CONIDA has installed two radio spectrometer stations belonging to the e-CALLISTO network in Lima, Peru. Given their strategic location near the Equator, it is possible to observe the Sun evenly throughout the whole year. The receiver located at Pucusana, nearby the capital city of Lima, took data from October 2014 until August 2016 in the metric and decimetric bands looking for radio bursts. During this period, this e-CALLISTO detector was unique in its time-zone coverage. To assess the suitability of the sites and the performance of the antennas we analyzed the radio ambient background and measured their radiation pattern and beam-width. To show the capabilities of the facilities to study solar dynamics in these radio frequencies we have selected and analyzed type III Solar Radio Bursts. The study of this kind of bursts helps to understand the electron beams traversing the solar corona and the solar atmospheric density. We have characterized the most common radio bursts with the following mean values: a negative drift rate of -25.8 $\pm$ 3.7 MHz/s, a duration of 2.6 $\pm$ 0.3 s and 35 MHz bandwidth in the frequency range of 114 to 174 MHz. In addition, for some events, it was possible to calculate a global frequency drift which on average was 0.4 $\pm$ 0.1 MHz/s.
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