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Photoelectric Institute Solar Telescope Obtained High Resolution Observation Results of Evolution of Solar Activity
[ Instrument R&D of Instrumentation Network ] Recently, a research team of high-resolution solar atmosphere detection technology led by Rao Changhui, a researcher of the Institute of Optoelectronic Technology of the Chinese Academy of Sciences, successfully obtained high-resolution observation results of the rapid evolution of the solar active area.
Solar storms are the source of space weather disasters, and the main manifestations of large-scale solar storms such as coronal mass ejection, flares, and coronal holes. Solar explosive activities have a greater impact on the Earth’s space environment, including communication interruption, large-scale power outages, information security accidents, damage to space probes, etc., affecting activities such as aerospace, aviation, communications, navigation and positioning. The enhanced electromagnetic radiation and solar proton events formed by solar storm eruptions propagate at the speed of light or quasi-light, and advance warning and forecast of solar storm eruptions are required to avoid major injuries and losses caused by space weather disasters.
The distinguishing feature of the space probe is that it can carry out long-term flight in space, and the ground cannot be remotely controlled in real time, so it must have autonomous navigation capabilities; flying to planets outside the solar system, away from the sun, cannot use solar battery arrays, but must use nuclear energy systems; bear Very harsh space environmental conditions require special protective structures; landing or walking on the surface of the moon or planets requires some special forms of structure.
Aiming at the major needs of space weather forecasting and the frontier research of solar physics science, the 1.8-meter high-resolution tomography telescope of the Institute of Optoelectronics can detect the characteristics of the precursors of solar storm eruptions as early as possible through the high-resolution imaging detection of the solar atmosphere and master its evolution laws To provide data support for early warning and forecast of solar storms and scientific research of solar physics.
With the advancement of science and technology and the continuous improvement of the level of informatization, the impact and harm of solar storms have become increasingly prominent. At the same time, due to the increasingly complex relationship between various human technology systems, the impact of solar storms is more extensive, and the degree of impact is also increasing. The three rounds of solar storm attacks on the earth will bring various effects and harms to human technological systems. According to the classification of technical systems, the impact of solar storms mainly has three effects on satellites, radio communications and terrestrial technical systems.
On April 28, the 1.8-meter solar telescope successfully obtained the observation results of the near-diffraction limit resolution of the solar atmospheric photosphere and chromosphere. On April 30, the researchers tracked and observed AR12760 in the solar active area. The target was locked to the negative sunspot in the active area, and finally obtained high-resolution observation data for more than an hour (07:53-09:01 UT). The TiO image shows the solar sphere layer, and the Hα image shows the chromosphere layer above the photosphere layer. With time evolution, in the TiO image, the negative black spots clearly extend out of the stomatal pores, reflecting the continuous emergence of the magnetic flux in the active area; in the Hα image, it can be clearly seen that two small dark bars are rooted in The little sunspot below, and the interaction between the two dark bar foot points, resulting in some brightening. The lowermost two-minute Hα image and video show the moment when the dark bar foot point is brightened, which may be The emergence of continuous magnetic currents in the active area leads to the interaction between the two dark bars and produces brightening.
Source: Institute of Optoelectronic Technology, Encyclopedia