Investigations of the dynamics of the hot coronal plasma are crucial for understanding various space weather phenomena and making in-depth analyzes of the global heating of the solar corona. We present here numerical simulations of observations of siphon flows along loops (simple semi-circular flux ropes) to demonstrate the capabilities of the Solar Line Emission Dopplerometer (SLED), a new instrument under construction for imaging spectroscopy. It is based on the Multi-channel Subtractive Double Pass (MSDP) technique, which combines the advantages of filters and slit spectrographs. SLED will observe coronal structures in the forbidden lines of FeX 6374 Å and FeXIV 5303 Å, and will measure Doppler shifts up to 150 km s⁻¹ at high precision (50 m s⁻¹) and cadence (1 Hz). It is optimized for studies of the dynamics of fast evolving events such as flares or Coronal Mass Ejections (CMEs), as well as for the detection of high-frequency waves. Observations will be performed with the coronagraph at Lomnický Štít Observatory (LSO), and will also occur during total solar eclipses as SLED is a portable instrument.

研究热日冕等离子体的动力学对于了解各种空间天气现象和深入分析日冕的全球加热至关重要。我们在此展示了沿环路（简单的半圆形通量绳）观察虹吸流动的数值模拟，以展示太阳线发射多普勒计 (SLED) 的能力，这是一种正在建造的用于成像光谱的新仪器。它基于多通道减法双通 (MSDP) 技术，结合了滤光片和狭缝光谱仪的优点。SLED 将观察 FeX 6374 Å 和 FeXIV 5303 Å 禁区内的日冕结构，并以^高精度（50 m s ^-1) 和节奏 (1 Hz)。它针对耀斑或日冕物质抛射 (CME) 等快速演化事件的动力学研究以及高频波的探测进行了优化。观测将在 Lomnický Štít 天文台 (LSO) 使用日冕仪进行，并且也将在日全食期间进行，因为 SLED 是一种便携式仪器。