Change search
ReferencesLink to record
Permanent link

Direct link
Lightning climatology of exoplanets and brown dwarfs guided by Solar system data
Stockholm University, Faculty of Science, Department of Astronomy. Universidad de La Laguna, Spain.
Show others and affiliations
Number of Authors: 5
2016 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 461, no 4, 3927-3947 p.Article in journal (Refereed) Published
Abstract [en]

Clouds form on extrasolar planets and brown dwarfs where lightning could occur. Lightning is a tracer of atmospheric convection, cloud formation and ionization processes as known from the Solar system, and may be significant for the formation of prebiotic molecules. We study lightning climatology for the different atmospheric environments of Earth, Venus, Jupiter and Saturn. We present lightning distribution maps for Earth, Jupiter and Saturn, and flash densities for these planets and Venus, based on optical and/or radio measurements from the World Wide Lightning Location Network and Sferics Timing and Ranging Network radio networks, the Lightning Imaging Sensor/Optical Transient Detector satellite instruments, the Galileo, Cassini, New Horizons and Venus Express spacecraft. We also present flash densities calculated for several phases of two volcano eruptions, Eyjafjallajokull's (2010) and Mt Redoubt's (2009). We estimate lightning rates for sample, transiting and directly imaged extrasolar planets and brown dwarfs. Based on the large variety of exoplanets, six categories are suggested for which we use the lightning occurrence information from the Solar system. We examine lightning energy distributions for Earth, Jupiter and Saturn. We discuss how strong stellar activity may support lightning activity. We provide a lower limit of the total number of flashes that might occur on transiting planets during their full transit as input for future studies. We find that volcanically very active planets might show the largest lightning flash densities. When applying flash densities of the large Saturnian storm from 2010/11, we find that the exoplanet HD 189733b would produce high lightning occurrence even during its short transit.

Place, publisher, year, edition, pages
2016. Vol. 461, no 4, 3927-3947 p.
Keyword [en]
atmospheric effects, planets and satellites: atmospheres, planets and satellites: individual: Earth, Venus, Jupiter, Saturn, brown dwarfs, planetary systems
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-135238DOI: 10.1093/mnras/stw1571ISI: 000383514900043OAI: diva2:1045098
Available from: 2016-11-08 Created: 2016-11-01 Last updated: 2016-11-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Asensio-Torres, Ruben
By organisation
Department of Astronomy
In the same journal
Monthly notices of the Royal Astronomical Society
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 2 hits
ReferencesLink to record
Permanent link

Direct link