Callingham, J.R.

Pope, B.

Shimwell, T.W.

Vedantham, H.

Leiden University Scholary Publications

Radio stars and exoplanets at low-frequencies: first detectionsCallingham, J.R.; Vedantham, H.; Pope, B.; Shimwell, T.W.CitationCallingham, J. R., Vedantham, H., Pope, B., & Shimwell, T. W. (2022). Radio stars andexoplanets at low-frequencies: first detections. Bulletin Of The American AstronomicalSociety, 54(5). Retrieved from https://hdl.handle.net/1887/3593922 Version: Publisher's VersionLicense: Creative Commons CC BY 4.0 licenseDownloaded from: https://hdl.handle.net/1887/3593922 Note: To cite this publication please use the final published version (if applicable).Bulletin of the AAS • Vol. 54, Issue 5Radio stars and exoplanetsat low-frequencies: FirstdetectionsJoseph Callingham1 Harish Vedantham2 Benjamin Pope3Timothy Shimwell21Leiden University, 2ASTRON, 3University of QueenslandPublished on: Jun 20, 2022URL: https://baas.aas.org/pub/2022n5i106p01License: Creative Commons Attribution 4.0 International License (CC-BY 4.0)Bulletin of the AAS • Vol. 54, Issue 5 Radio stars and exoplanets at low-frequencies: First detections2One key question that astronomy is attempting to answer is whether there are habitable planets around stars other than our Sun. While we have entered an era where identifying nearby exoplanets has become standard, discerning whether the environmental conditions dictated by the host stars are suitable for life has proved far more elusive. The detection of low-frequency radio emission from an M dwarf or an exoplanet provides a direct probe of extrasolar space weather and the planet’s magnetic field — information crucial for assessing the potential habitability of the planet. In this talk, I will outline our LOFAR survey of stellar systems, with a focus on our recent detection of strong, highly circularly polarised low-frequency radio emission associated with nearby stars — the expected signpost of star-exoplanet interactions. I will discuss how our survey represents the most comprehensive observations of stellar systems at low frequencies, and the implications of this new population in understanding the magnetosphere of M dwarfs and exoplanetary magnetic fields. I will conclude with our progress in determining the expected periodicity of the radio emission from star-planet interactions.

Radio stars and exoplanets at low-frequencies: first detections

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Radio stars and exoplanets at low-frequencies: first detections

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Leiden University Scholary Publications