On 8 November 2013 a halo-type coronal mass ejection (CME) was observed, together with flares and type II radio bursts, but the association between the flares, radio bursts, and the […]
Space Weather & Heliophysics
Posted inGaia - Planetary Perspectives, Press Release, Space Weather & Heliophysics
Space Weather From Our Local Star Disrupts Nocturnal Bird Migration On Earth
It’s well-known that birds and other animals rely on Earth’s magnetic field for long-distance navigation during seasonal migrations.
Posted inExoplanets, -moons, -comets, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report, TRAPPIST-1
Characterizing The Near-infrared Spectra Of Flares From TRAPPIST-1 During JWST Transit Spectroscopy Observations
We present the first analysis of JWST near-infrared spectroscopy of stellar flares from TRAPPIST-1 during transits of rocky exoplanets. Four flares were observed from 0.6–2.8 μm with NIRISS and 0.6–3.5 […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report, TRAPPIST-1
Living With A Red Dwarf: X-ray, UV, And Ca II Activity-Age Relationships Of M Dwarfs
The vast majority of stars in the nearby stellar neighborhood are M dwarfs. Their low masses and luminosities result in slow rates of nuclear evolution and minimal changes to the […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Impact of M-dwarf Stellar Wind and Photoevaporation on the Atmospheric Evolution of Small Planets
The evolution of a planet’s atmosphere depends strongly on its host star’s properties. When their host stars are younger, planets can experience stronger winds and EUV emissions. This is particularly […]
Posted inArtemis & Lunar Exploration, Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Press Release, Space Weather & Heliophysics
Electrons From Earth May Be Forming Water On The Moon
A team of researchers, led by a University of Hawai‘i (UH) at Mānoa planetary scientist, discovered that high energy electrons in Earth’s plasma sheet are contributing to weathering processes on […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Mars, Space Weather & Heliophysics, Status Report
Variability In Low Mars Atmosphere’s H2O Concentration Stimulated By Solar Cycle Activity
Exploring planetary atmospheres, particularly Mars, captivates planetary science. Mars’ thin, CO2-rich atmosphere poses a unique puzzle involving composition, climate history, and habitability.
Posted inAstronomy & Telescopes, Habitable Zones, Space Weather & Heliophysics, Status Report
On The Radio Emission From ε Eridani
Some solar-type stars are known to present faint, time-variable radio continuum emission whose nature is not clearly established.
Posted inExoplanets, -moons, -comets, Extinction events, Habitable Zones, Space Weather & Heliophysics, Status Report
The Space Weather Around The Exoplanet GJ 436 b. II. Stellar Wind-exoplanet Interactions
The M dwarf star GJ 436 hosts a warm-Neptune that is losing substantial amount of atmosphere, which is then shaped by the interactions with the wind of the host star. […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Space Weather & Heliophysics, Status Report
The CARMENES Search For Exoplanets Around M Dwarfs. Behaviour Of The Paschen Lines During Flares And Quiescence
The hydrogen Paschen lines are known activity indicators, but studies of them in M~dwarfs during quiescence are as rare as their reports in flare studies. This situation is mostly caused […]