Risks for Life on Habitable Planets from Superflares of Their Host Stars
- 10 October 2017
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 848 (1), 41
- https://doi.org/10.3847/1538-4357/aa8e96
Abstract
We explore some of the ramifications arising from superflares on the evolutionary history of Earth, other planets in the solar system, and exoplanets. We propose that the most powerful superflares can serve as plausible drivers of extinction events, and that their periodicity corresponds to certain patterns in the terrestrial fossil diversity record. On the other hand, weaker superflares may play a positive role in enabling the origin of life through the formation of key organic compounds. Superflares could also prove to be quite detrimental to the evolution of complex life on present-day Mars and exoplanets in the habitable zone of M- and K-dwarfs. We conclude that the risk posed by superflares has not been sufficiently appreciated, and that humanity might potentially witness a superflare event in the next years, leading to devastating economic and technological losses. In light of the many uncertainties and assumptions associated with our analysis, we recommend that these results should be viewed with due caution.This publication has 231 references indexed in Scilit:
- The 1859 space weather event revisited: limits of extreme activityJournal of Space Weather and Space Climate, 2013
- Causes of an ad 774–775 14C increaseNature, 2012
- The Effect of a Strong Stellar Flare on the Atmospheric Chemistry of an Earth-like Planet Orbiting an M DwarfAstrobiology, 2010
- Dynamics of origination and extinction in the marine fossil recordProceedings of the National Academy of Sciences of the United States of America, 2008
- Tipping elements in the Earth's climate systemProceedings of the National Academy of Sciences of the United States of America, 2008
- TOWARD A METABOLIC THEORY OF ECOLOGYEcology, 2004
- Extinction risk from climate changeNature, 2004
- The antiquity of RNA-based evolutionNature, 2002
- Biological Effects of High Ultraviolet Radiation on Early Earth—a Theoretical EvaluationJournal of Theoretical Biology, 1998
- Ultraviolet selection pressure on the earliest organismsJournal of Theoretical Biology, 1973