Hubble’s first evidence of a magnetic field produced by an exoplanet. When is the first detection around Exoterre?
Oneis a parameter The planet’s atmosphere is important in defining its ability to evolve and remain habitable. for example, protect us Of’ and thus preserves life on its surface. all body of They do not have an internal magnetosphere, whereas their presence , although checked with the comments of The radio, so far, has escaped detection.
using observations ofA new study published in Reports the first clear identification of a magnetosphere for , a type of gaseous planet Discovered in 2008 (123 .) of the solar system).
How to find the magnetic field of a distant planet?
The detection and characterization of the magnetic field of the planets is done by tracking the atomsFormed in the atmosphere of an ionized planet. when it Escape from the atmosphere, they are captured by the magnetic field, and their detection at great distances from the planet reveals the properties of the magnetic field.
To accomplish this task, the international research team simulated in detail the physical and chemical formation and evolution of these ions from the deep atmosphere in the exoplanet and its interplanetary space.Host using a combination of advanced models developed in France (IAP, CEA, GSMA) and internationally. The observations were obtained thanks to the HST/PANCET research program dedicated to the characterization of ,
Models of exoplanet formation may be wrong
Analysis of Hubble’s measurements also shows that the exoplanet has avery few (a measure of the number of atoms heavier than planet than predicted by theoretical models, in agreement with other independent studies). This result is important, as it lends credence to the finding that HAT-P-11b (26.7 times the mass of Earth) actually has a lower metallicity than expected. it means that may be wrong, suggesting that more work is needed to refine current theories on the formation and evolution of some exoplanets.
By measuring atmospheric metallicity as well as detecting the magnetic fields of planets, this study also provides – for the first time – a bridge between two disciplines of planetary science that are not typically linked: the internal physics of planets. AndSpace (the study of a planetary magnetosphere).
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