Solar-Terrestrial Sciences

Solar-Terrestrial Sciences

Meet the Early Career Scientists team of our division!

Hi, this is your ST-ECS team. We are a group of Early Career Scientists (ECSs) of the Solar-Terrestrial (ST) division, and we enjoy organizing events and activities with and for ST-ECS, both during the EGU General Assembly and throughout the year. Our aim is to increase the visibility of ECSs and provide you with opportunities for networking. Currently the team is formed by: Dr. Maxime Grandin Max ...[Read More]

Events organised by the ST Early-Career Scientist (ECS) Team during EGU22: We would like your feedback!

Now that EGU22 is over, it is time to gather some feedback! While you can provide your comments and suggestions on the General Assembly as a whole via the dedicated form available through the EGU22 website (see “Feedback” tab in, the ST Division’s Early-Career Scientist (ECS) Team would very much appreciate getting feedback on the various events they have o ...[Read More]

Reflection after the investigation of the direct First Parker Solar Probe Observation of the Interaction of Two Successive ICMEs

In Heliophysics there is a scarcity of in-situ buoys that allows us to monitor and track the solar wind changes in our Sun’s atmosphere, the heliosphere. NASA’s Parker Solar Probe (PSP) mission is one of those buoys that, together with Solar Orbiter (SolO, ESA/NASA Collaboration), is bringing a breath of fresh air in the effort to fully characterize the solar wind and study the evolution of the em ...[Read More]

Resolving the very fine details of the Sun in low frequency radio

Radio images of the Sun taken by a range of radio observatories at different frequencies.

The Sun is an active radio emitter, it produces radio emissions in a wide frequency range from kHz to THz. The solar atmosphere has a complex distribution of magnetic field, plasma density, and temperature. These different properties of the solar atmosphere will result in different radio emission features at different frequencies. In principle, the plasma density decreases with the heliocentric di ...[Read More]

Initiation and Heliospheric Evolution of a stealthy solar eruption

A schematic of the ICME flux rope cross-section and the large-scale magnetic structure draping about the ICME obtained based on the PSP observation.

In the early 1970s, when Coronal mass ejections (CMEs), massive eruptions of magnetized solar plasma into interplanetary space, were first discovered, they were assumed to be always associated with the energetic solar phenomenon like solar flares, prominences, etc. With improved coronagraphic and multi-wavelength observational instruments, a class of CMEs emerging from the streamers was found and ...[Read More]

Events organised by the ST ECS Team during EGU22

A poster giving the details of the meet the experts event at EGU22

Not long until we all gather again virtually or in-person for the EGU 2022 General Assembly, and the Solar-Terrestrial physics (ST) Division’s Early-Career Scientists (ECS) Team is organising several events, which you might want to add to your personal programme!  SC4.12 – Meet the Experts: The Future of Solar–Terrestrial Sciences Thursday, 26 May, 17:00–18:00 CEST (UTC+2)Hybrid format: room -2.61 ...[Read More]

ST-ECS networking campfire event

ST-ECS networking campfire event

The EGU Solar–Terrestrial physics (ST) division’s early-career scientist (ECS) team is organising a so-called Campfire event to gather the community together before EGU22 and promote networking among ST-ECSs. The event will be held on Zoom and will take place on Friday 18 March 2022 at 15:00 CET, for a duration of one hour. We will make use of breakout rooms to facilitate discussions in smaller gr ...[Read More]

First year of Energetic Particle Measurements with EPD aboard Solar Orbiter

An artists impression of the Solar Orbiter spacecraft

One year ago, the Energetic Particle Detector (EPD) aboard the European Space Agency’s (ESA’s) Sun observing spacecraft Solar Orbiter (SolO) was launched starting a long-awaited journey. SolO (Figure 1) will provide both in-situ and remote sensing measurements in the inner Heliosphere and EPD will contribute particularly to the latter ones. EPD consists of four sensors that share the s ...[Read More]

Meet the Experts: The future of solar terrestrial research

Every year at the EGU General Assembly renowned experts from the field of Solar-Terrestrial research get together to give inspirational talks and to meet with early career scientists. This year’s “Meet the Experts” session is focusing on the future of solar terrestrial research. To think of the future, we first have a look at the past, and more precisely on the knowledge acquired with over half a ...[Read More]

So… Who Cares about Switchbacks?

Explaining the Mysterious Plethora of Short Magnetic Field Reversals Observed by Parker Solar Probe and their Relation to the Origin of Solar Wind. In Switchbacks Explained: Super-Parker Fields – the Other Side of the Sub-Parker Spiral, N. A. Schwadron and D. J. McComas provide a simple geometric explanation for the source of “switchbacks” and associated large and one-sided transverse flows in the ...[Read More]