The multi-wavelength effects of stellar activity and the need for a public forecast

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• Lalitha Sairam (Birmingham)
• Tuesday 08 November 2022, 13:00-14:00
• Ryle seminar room + ONLINE - Details to be sent by email.

If you have a question about this talk, please contact Dr Jessica Rigley.

Contemplating the existence of worlds outside our solar system has always intrigued human interest. Since the discovery of the first exoplanet around the main- sequence star ~25 years ago, exoplanets have become the most coveted objects in the Galaxy. Stellar noise produced by magnetic activity such as flares, star spots, and plages mimics a low- mass exoplanet and creates spurious detections of atmospheric species. Although they are modelled for hindrance, stellar activity continues to affect detections by reducing the signal. In this talk, I will give an overview of the challenges that stellar activity poses for exoplanet detection and atmospheric characterisation. I will describe our ongoing project STellar ACtvity foreCAst for Optimal observations of exoplanets (STACCATO), which is a forecasting model to predict the optimal time for exoplanet detection and atmospheric characteristics reducing the need for stellar activity mitigation. I will also demonstrate how this project is synergistic with ongoing and upcoming missions such as HARPS3 , ARIEL and PLATO .

This talk is part of the Exoplanet Seminars series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Exoplanet Seminars
• Institute of Astronomy Talk Lists
• LCLU Departmental Talks
• Ryle seminar room + ONLINE - Details to be sent by email

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