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 […]
Space Weather & Heliophysics
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
TESS observations of flares and quasi-periodic pulsations from low mass stars and potential impact on exoplanets
We have performed a search for flares and Quasi-Periodic Pulsations (QPPs) from low mass M dwarf stars using TESS 2 min cadence data. We find seven stars which show evidence […]
Posted inSpace Weather & Heliophysics
Superflares Are Less Harmful To Exoplanets Than Previously Thought
Superflares, extreme radiation bursts from stars, have been suspected of causing lasting damage to the atmospheres and thus habitability of exoplanets. A newly published study found evidence that they only […]
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
Impact On Life From The Temporary Breakdown Of Earth's Magnetic Field 42,000 Years Ago
The temporary breakdown of Earth’s magnetic field 42,000 years ago sparked major climate shifts that led to global environmental change and mass extinctions, a new international study co-led by UNSW […]
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 […]