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Financed Master Thesis in the Heliospheric Research Group

Title: “Solar wind speed profiles and relation to the longitudinal extension of coronal holes close to the solar equator”

Two ESA services for solar wind high speed stream forecasting, ESWF (see Figure 1) and STEREO+CH, are provided by the Expert Service Group on Heliospheric Weather (swe.uni-graz.at). Currently, the solar wind speed at 1AU is calculated by using an empirical relation between solar wind speed and coronal hole area (Vrsnak, Temmer, Veronig, 2007). Compression and rarefaction effects, coronal hole locations, etc. change that speed profile. Studies show clear relations between the rise/fall of the in-situ measurement solar wind high speed streams and the width of a coronal hole (see Garton et al., 2018). The Master student will develop codes to implement such information to the ESA service and to improve the forecasted solar wind speed profiles.

The project position duration is 12 months starting November 1, 2020. The financial support (stipend) covers 500€ per month.

Send your motivation letter, transcript of records, and CV to Assoc.-Prof. Dr. Manuela Temmer (manuela.temmer(at)uni-graz.at). The job advertisement is open until filled.

Contact:
Manuela Temmer
Institute of Physics, University of Graz
Email: manuela.temmer(at)uni-graz.at

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PhD position in the Heliospheric Research Group

Magnetosheath jets constitute a very young and rich field of research. Coordinated investigations of the origins, characteristics, evolution, and downstream consequences of magnetosheath jets have been performed just for a few years. Although many basic questions still remain unsolved, it has already become clear, that jets are an important element in the frame of solar wind – magnetosphere – ionosphere interactions. In this frame, the solar cycle (quiet versus active phases), in general, and impulsive transient events (coronal mass ejections, CMEs) or periodic recurrent disruptions (corotating interaction regions, CIRs) play a major role. So far, nothing is known about how jets relate to solar cycle phases, CMEs, or CIRs.

For the FWF financed interdisciplinary project “Magnetosheath jets throughout the solar cycle” (in collaboration with Dr. Ferdinand Plaschke from the Space Research Institute Graz), we hire a PhD student who will perform advanced time series analyzes of in situ plasma and magnetic field measurements using different spacecraft in near Earth space (e.g., ACE, Wind, DSCOVR). The aim is to determine long and short term variations and dependencies in the solar wind data that can be related to the occurrence of magnetosheath jets. Special focus will be put on the specific signatures that stem from transient events, like coronal mass ejections, and stream or corotating interaction regions as well as complex compounds of those.

The PhD candidate ideally holds a Master’s degree in Space Science (covering e.g., Solar, Heliospheric, or Magnetospheric Physics), is fluent in English language, skilled in programming (IDL, Python, …), and has experience working with satellite data.

The project position will start January 4, 2021 and has a duration of 3 years, during which the student will work on his/her PhD thesis based on the project results. The salary is according to FWF rules (see more details under: https://www.fwf.ac.at/en/research-funding/personnel-costs/).

Send your resume with cover letter and CV to Assoc.-Prof. Dr. Manuela Temmer by October 16,2020.

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BSc. or MSc. student

Orbital Tomography

The global aim of this BSc. or MSc. project is to help develop and consolidate orbital tomography and provide a basis whereby it could be even more generally applied. The BSc. or MSc. student will work with laboratory and/or synchrotron based UHV systems on collaborative projects with the theory group of Peter Puschnig (KFU) and Forschung Zentrum Jülich (GER) through the FWF-funded project concerned with the same topic. Specific projects, molecules and experimental techniques will be decided upon discussion with the candidate.

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Contact michael.ramsey(at)uni-graz.at for further details.

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