A Mission to Understand Solar Variability

Instrumentation & Orbit

HX utilizes a suite of five instruments: the Low-Frequency Instrument (LFI), the High-Frequency Instrument (HFI), the Solar Wind Anomaly Regular Structure instrument (SWANS), the Magnetoplasma Real-time Analyser (MPA), and the Energetic Particle Detector (EPD).

The spacecraft employs a highly elliptical orbit, allowing it to spend significant time within Earth’s magnetosphere while also providing distant views of the Sun. This unique orbital path enables detailed measurements of plasma waves and particle fluxes.

Studying Magnetospheric Waves

A primary objective of HX is to investigate magnetospheric waves – disturbances in the Earth’s magnetic field generated by solar wind interactions. These waves play a crucial role in transferring energy between different regions of the magnetosphere.

LFI and HFI are specifically designed to detect these waves across a broad range of frequencies, providing valuable insights into their generation mechanisms and propagation characteristics.

ω = kc (where ω is angular frequency, k is wave number, and c is speed of light)

Solar Wind Characterization

The SWANS instrument focuses on identifying the regular structures within the solar wind – repeating patterns caused by the Sun’s rotation. These structures significantly impact the magnetosphere.

By mapping these features, scientists can better understand how the solar wind's structure affects Earth’s magnetic field and contributes to space weather phenomena.

Impact on Space Weather

HX data is critical for improving our understanding of space weather – the dynamic conditions in space caused by solar activity. Predicting and mitigating the effects of space weather are vital for protecting satellites, astronauts, and ground-based infrastructure.

The combined observations from HX's instruments provide a more complete picture of the complex interactions between the Sun and Earth, ultimately enhancing our ability to forecast and respond to hazardous space weather events.

Frequently asked questions

Try it live

Everything above runs in your browser — open Spiral Galaxy and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.