MIST

Magnetosphere, Ionosphere and Solar-Terrestrial

Latest news

UK Space Agency call for nominations for the position of Chair of the Science Programme Advisory Committee

The UK Space Agency (UKSA) is seeking a new Chair for the Science Programme Advisory Committee (SPAC). The position of Chair of the Science Programme Advisory Committee will become vacant on 1 July 2019.

The UK Space Agency welcomes applications from the UK space science community. The full position and person specifications are on the Government's website.

 

UKRI 2019 Opportunities Call

The Opportunities Call is designed to support the STFC PPAN community by providing funding for ‘pump-priming’ activities. The closing date is 13 June 2019, and proposals will be considered from any consortia or university groups eligible to apply for UKRI funding. For further details please visit the UKRI website.

This call considers ‘the PPAN community’ to encompass the following broad areas of STFC’s remit: particle physics, particle astrophysics, astronomy, nuclear physics, accelerator physics, solar and planetary science, and computing that underpins these areas.

The Opportunities Call supports pump-priming activities as opposed to substantive research programmes. Examples of pump-priming activities could include: networking; partnership building; workshop development and delivery; design studies; proofs of concept; or other pilot approaches.

In line with the call aims, pump-priming activities may be proposed for entirely new programmes of work, or to allow existing projects to move in new or interesting directions.

To enable the support of a portfolio of projects of varying scale, proposals to the Opportunities call will be aligned in two separate rank ordered lists: one for proposals of values up to £50k and another for proposals of value £51k–140k. Subject to the advice of the assessment process, STFC anticipates supporting approximately 15 projects in total as a result of the Opportunities Call.

Special Issue of Annales Geophysicae on “Satellite observations for space weather and geo-hazard”

We solicit research articles on the subject of “Satellite observations for space weather and geo-hazard” for a forthcoming Special Issue of Annales Geophysicae. This Special Issue is not a conference proceedings volume and is not limited to research presented at the EGU conference. All submissions must be original papers that meet the quality and peer-review standards of Annales Geophysicae. The deadline for manuscript submission is 31 August 2019 and the editors are M. Piersanti, L. Conti, X. Shen, and G. Balasis.

Measurements from LEO satellites can provide a global view of near-Earth electromagnetic, plasma and particle environments and are complementary to ground-based observations, which have limited spatial coverage. The AMPERE project and integration of the SWARM data into ESA’s Space Weather program are relevant examples of this approach. The availability of thermosphere and ionosphere data from the DEMETER satellite and the new operative CSES mission demonstrates that satellites that have not been specifically designed for space weather studies can also provide important contributions to this research field. On the other hand, there is evidence that earthquakes and artificial emitters can generate electromagnetic anomalies into the near-Earth space. A multi-instrumental approach, by using ground-based observations (magnetometers, magnetotelluric stations, ionospheric sounders, GNSS receivers, etc.) and LEO satellite (DEMETER, SWARM, CSES, the scheduled CSES-02 mission, etc.) measurements can help in clarifying the lithosphere–atmosphere–ionosphere coupling (LAIC) mechanisms due to electromagnetic emissions before, during and after large earthquakes as well as from thunderstorm activity.

 

STFC Public Engagement Early-Career Researcher (PEER) Forum

The STFC has issued a call for applications to join their Public Engagement Early-Career Researcher (PEER) Forum, which is designed to support talented scientists and engineers in the early stages of their career in developing their public engagement and outreach goals. This forum is geared towards PhD students and early-career postdocs developing ideas for public engagement with similarly-minded researchers in a context that allows them to feed suggestions for the improvement of STFC's programmes back to STFC itself, and involves meeting twice a year. The deadline for applications is 4pm on 3 June 2019. For more information and more detail on what the scheme involves, you can visit the PEER Forum webpage or This email address is being protected from spambots. You need JavaScript enabled to view it..

The aims of the PEER Forum are as follows:

  • To foster peer learning and peer support between early career scientists and engineers with a passion for public engagement and outreach.
  • To improve understanding of the support STFC provides for public engagement and outreach (including funding mechanisms, evaluation, and reporting) and how to successfully utilise this support.
  • To stimulate discussions that help to develop and influence STFC’s approaches to public engagement.

ESA Science Programme Committee greenlights SMILE

The Solar wind Magnetosphere Ionosphere Link Explorer (SMILE) has been given the green light for implementation by ESA's Science Programme Committee. SMILE will explore the Sun-Earth connection in a very novel way, by mapping solar wind-magnetosphere interactions in soft X-rays. SMILE is a joint mission by ESA and the Chinese Academy of Sciences (CSA). The UK is one of many countries contributing to the payload development.

The SMILE payload comprises four instruments: a soft X-ray imager (SXI), a UV auroral imager (UVI) and an in situ measurement package composed of a light ion analyser and a magnetometer. The UK leads SXI, Canada leads UVI, and China leads the ion analyser and magnetometer. SMILE will fly in a highly elliptical polar orbit with an apogee of 20 Earth radii to image the magnetosphere and the Northern Lights for more than 40 hours continuously per orbit. The launch is planned in November 2023.

For more information, visit the European Space Agency, the Chinese Academy of Sciences, or Mullard Space Science Laboratory.

Observations of magnetic reconnection in Earth’s bow shock

by Imogen Gingell (Imperial College London)

The bow shock is a thin transition between super-sonic solar wind flows and sub-sonic flows in the Earth’s magnetosheath, during which the plasma is rapidly compressed and heated. In space plasmas, particle collisions cannot provide sufficient energy dissipation to slow the flow to sub-sonic speeds. Instead, nonlinear, electromagnetic plasma processes must be responsible.

Recent simulations (hybrid and fully kinetic particle-in-cell) have shown that current sheets and magnetic islands may be generated within the bow shock’s thin transition region (see Gingell et al 2017). This implies that magnetic reconnection, i.e. a localised change in the topology of the magnetic field, may be among the nonlinear processes responsible for heating in the shock transition layer. However, reconnection is not currently included in shock models.

Using data provided by NASA’s Magnetospheric Multiscale mission (MMS), we have now detected signatures of reconnection occurring at current sheets embedded in the shock. These signatures include a reversal of the magnetic field direction over ion inertial scales and a coincident super-Alfvénic jet of electrons corresponding the outflow from the reconnection site (see Fig 1). The increase in the electron temperature is consistent with previous observations of reconnection at the magnetopause. However, the lack of an ion jet or heating is similar to recent observations within the magnetosheath.

Now that we have confirmed that reconnection can occur within the bow shock, we must assess the broader impact of reconnection on heating and particle acceleration at shocks, explore the evolution of reconnecting structures as they convect downstream, and determine the parameter regime over which shock reconnection can occur.

For more information, please see the paper below:

Gingell, I., Schwartz, S. J., Eastwood, J. P., Burch, J. L., Ergun, R. E., Fuselier, S., et al. (2019). Observations of magnetic reconnection in the transition region of quasi‐parallel shocks. Geophysical Research Letters, 46. https://doi.org/10.1029/2018GL081804

Fig 1. (i) schematic of the structure of a reconnecting current sheet, showing magnetic field (black), current density (green), electron outflow jets (blue) and spacecraft trajectory for the observed event (red). (ii) observations of a current sheet in the bow shock, showing (a) magnetic field, (b) electron and ion bulk velocities, and (c) electron ion temperatures.