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Stellar_flare_hits_HD_189733_b_(artist's_impression)

This artist's impression shows the hot Jupiter HD 189733b, as it passes in front of its parent star, as the latter is flaring, driving material away from the planet. The escaping atmosphere is seen silhouetted against the starlight. The surface of the star, which is around 80% the mass of the Sun, is based on observations of the Sun from NASA's Solar Dynamics Observatory.

Credit: NASA, ESA, L. Calçada, Solar Dynamics Observatory

Prof Suzanne Aigrain

Professor of Astrophysics

Research theme

  • Astronomy and astrophysics
  • Exoplanets and planetary physics

Sub department

  • Astrophysics

Research groups

  • Exoplanets and Stellar Physics
Suzanne.Aigrain@physics.ox.ac.uk
Telephone: 01865 (2)73339
Denys Wilkinson Building, room 762
Stars & Planets @ Oxford research group website
  • About
  • Publications

Suzanne Aigrain is a Professor of Astrophysics at Oxford University and a Fellow of All Souls College. Prior to this she was a Lecturer at the University of Exeter, having been a PPARC Postdoctoral Fellow at the Institute of Astronomy in Cambridge.

Her research interests include the detection and characterisation of exoplanets via the transit and radial velocity (RV) methods, the impact of stellar activity on exoplanet studies, and the application of modern Bayesian data analysis methods to astronomical datasets. 

She has worked extensively on past, present and future space-based transit search missions CoRoT, Kepler, K2, TESS and PLATO (launch 2026) and is a core member of the Terra Hunting Experiment (THE), an ambitious 10-year search for nearby Exo-Earths using the HARPS3 RV spectrograph, which will begin operations at the Isaac Newton Telescope (INT) in the Canary Islands in 2025. She pioneered, and continues to develop, the application of Gaussian Process regression to exoplanet datasets. 

She is PI of the project "GPRV: overcoming stellar activity in radial velocity planet searches", funded by the European Research Council, and receives funding from UKRI/STFC to work on TESS and PLATO.

She also has a strong interest in science communication, citizen science, and promoting good practice in data analysis. 

Watch the video of Suzanne's talk at TEDxWarwick 2024

Research interests

exoplanets
stellar activity
data analysis

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