As the powerhouse of our solar system, the Sun’s electromagnetic planetary influences appear contradictory. On the one hand, the Sun for aeons emitted radiation which was “just right” for life […]
space weather
Posted inSpace Weather & Heliophysics
The Contribution of M-Dwarf Flares to the Thermal Escape of Potentially Habitable Planet Atmospheres
The habitability of planets around M dwarfs (≲0.5M⊙) can be affected by the XUV (X rays + extreme UV) emission of these stars, with flares occasionally increasing the XUV flux […]
Posted inSpace Weather & Heliophysics
MHD Study of Planetary Magnetospheric Response During Extreme Solar Wind Conditions: Earth and Exoplanet Magnetospheres Applications
Context: The stellar wind and the interplanetary magnetic field modify the topology of planetary magnetospheres. Consequently, the hazardous effect of the direct exposition to the stellar wind, for example regarding […]
Posted inEpsilon Eridani, Exoplanets, -moons, -comets, Space Weather & Heliophysics
The Crucial Role Of Surface Magnetic Fields For Stellar Dynamos: Epsilon Eridani, 61 Cygni A, and the Sun
Cool main-sequence stars, such as the Sun, have magnetic fields which are generated by an internal dynamo mechanism. In the Sun, the dynamo mechanism produces a balance between the amounts […]
Posted inSpace Weather & Heliophysics
Probable Detection Of An Eruptive Filament From A Superflare On A Solar-type Star
Solar flares are often accompanied by filament/prominence eruptions (∼104 K and ∼1010−11 cm−3), sometimes leading to coronal mass ejections (CMEs) that directly affect the Earth’s environment. `Superflares’ are found on […]
Posted inSpace Weather & Heliophysics
Modeling The Corona And XUV Emission Of The Sun And Sun-like Stars
The X-ray and extreme-ultra-violet (EUV) emissions from the low-mass stars significantly affect the evolution of the planetary atmosphere. It is, however, observationally difficult to constrain the stellar high-energy emission because […]
Posted inSpace Weather & Heliophysics
The Give And Take Of Mega-flares From Stars
The long relationships between stars and the planets around them – including the Sun and the Earth – may be even more complex than previously thought. This is one conclusion […]
Posted inSpace Weather & Heliophysics
Stellar Flares Can Lead To The Diminishment Of A Planet's Habitability
In a new study researchers, led by Research Scientist Dimitra Atri of the Center for Space Science at NYU Abu Dhabi (NYUAD), identified which stars were most likely to host […]
Posted inPress Release, Space Weather & Heliophysics
EvryFlare III: Temperature Evolution and Habitability Impacts of Dozens of Superflares Observed Simultaneously by Evryscope and TESS
Superflares may provide the dominant source of biologically relevant UV radiation to rocky habitable zone M-dwarf planets (M-Earths), altering planetary atmospheres and conditions for surface life. The combined line and […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics
New Research Explores How Super Flares Affect Planets’ Habitability
Ultraviolet light from giant stellar flares can destroy a planet’s habitability. New research from the University of North Carolina at Chapel Hill will help astrobiologists understand how much radiation planets […]