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dc.contributor.authorHodosán, G.
dc.contributor.authorHelling, Ch.
dc.contributor.authorVorgul, I.
dc.identifier.citationHodosán , G , Helling , C & Vorgul , I 2021 , ' Exploring terrestrial lightning parameterisations for exoplanets and brown dwarfs ' , Planetary and Space Science , vol. 204 , 105247 .
dc.identifier.otherRIS: urn:0D97681EB2FE1AC0BDCD58E6AD55B283
dc.descriptionWe highlight financial support of the European Community under the FP7 by an ERC starting grant number 257431. Ch. H. acknowledges funding from the European Union H2020-MSCA-ITN-2019 under Grant Agreement no. 860470 (CHAMELEON).en
dc.description.abstractObservations and models suggest that the conditions to develop lightning may be present in cloud-forming extrasolar planetary and brown dwarf atmospheres. Whether lightning on these objects is similar to or very different from what is known from the Solar System awaits answering as lightning from extrasolar objects has not been detected yet. We explore terrestrial lightning parameterisations to compare the energy radiated and the total radio power emitted from lightning discharges for Earth, Jupiter, Saturn, extrasolar giant gas planets and brown dwarfs. We find that lightning on hot, giant gas planets and brown dwarfs may have energies of the order of 1011–1017 ​J, which is two to eight orders of magnitude larger than the average total energy of Earth lightning (109 ​J), and up to five orders of magnitude more energetic than lightning on Jupiter or Saturn (1012 ​J), affirming the stark difference between these atmospheres. Lightning on exoplanets and brown dwarfs may be more energetic and release more radio power than what has been observed from the Solar System. Such energies would increase the probability of detecting lightning-related radio emission from an extrasolar body.
dc.relation.ispartofPlanetary and Space Scienceen
dc.subjectAtmospheric electricityen
dc.subjectLightning dischargeen
dc.subjectRadio emissionen
dc.subjectSolar systemen
dc.subjectEarth − Jupiter − Saturnen
dc.subjectBrown dwarfsen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleExploring terrestrial lightning parameterisations for exoplanets and brown dwarfsen
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.sponsorEuropean Commissionen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden
dc.identifier.grantnumber257431 257431en

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