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Dr. Anna Julia Poser

PhD in Theoretical Physics

Schattenbild Frau

Postdoc | Planetary Geodynamics • Project Plato - Exoplanet Catalogue

Address
Malteserstr. 74-100, Building D
Room D-
12249 Berlin
Email
anna.julia.poser[at]fu-berlin.de
  • 2018 - 2024

PhD in Theoretical Physics at University of Rostock, Germany

Dissertation: From clouds to cores: advancing the understanding of giant irradiated exoplanets

Supervisor: Prof. Dr. Ronald Redmer

  • 2014 - 2018

M.Sc. in Physics at University of Rostock, Germany

Semester abroad at Universidad Nacional de La Plata, Argentina and internship at SEAT, S.A., Barcelona, Spain

Thesis: Der Einfluss von Wolken in der Berechnung der Struktureigenschaften großer Exoplaneten

Supervisor: Dr. Nadine Nettelmann, Prof. Dr. Ronald Redmer

 

  • 2011 - 2014

B.Sc. in Physics at University of Rostock, Germany

Thesis: Masse-Radius-Relationen von Exoplaneten 

Supervisor: Dr. Andreas Becker, Prof. Dr. Ronald Redmer

I am a physicist who builds planets by making models of their atmospheres, interiors, and long-term evolution.

During my PhD at the University of Rostock, I studied hot Jupiters - gas giant exoplanets orbiting extremely close to their stars - focusing on how atmospheric conditions shape their interior structure and influence radius evolution. One key finding was that deep cloud layers can significantly alter the contraction of a planet’s radius. Additionally, intense irradiation makes the atmosphere behave like a plasma. This plasma, interacting with the magnetic field, may help sustain an inflated planetary radius.

Understanding how planetary interiors and atmospheres interact is key to interpreting exoplanet observations. 

At FU, I am working on characterising the planets that will be observed by the ESA PLATO mission.

Research Interests:

  • Planet formation and evolution
  • Coupled models of the interior, atmosphere and long-term evolution
  • Rocky and giant planets, hot Jupiters (but not exclusively)

If you are interested in discussing my research or potential collaborations, feel free to get in touch!