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Magnetic Activity

All articles tagged with #magnetic activity

astronomy1 year ago

"Model Reveals Impact of Star's Brightness on Exoplanet Sizes"

New model calculations show that the brightness distribution of a star's limb, influenced by its magnetic field, affects the shape of the light curve and the interpretation of exoplanet data. Researchers demonstrate that including the star's magnetic field in model calculations resolves discrepancies between observational data and previous models, providing a more accurate analysis of exoplanet atmospheres. This study offers a way to improve the interpretation of data from space telescopes like the James Webb Space Telescope and suggests the potential for inferring stellar magnetic field strength from exoplanet observations.

via Phys.org|
#astronomy#exoplanets#limb-darkening
astronomy2 years ago

Distant star's 'superflare' may have caused powerful solar storm.

Scientists have observed one of the most powerful and gargantuan stellar flares ever seen from a star system called V1355 Orionis, which is about 400 light-years from Earth. The superflare is 10 times more massive than anything ever witnessed erupting from the sun and may have launched one of the largest coronal mass ejections (CMEs) ever observed. Superflares originate from stars that are highly magnetically active and may be accompanied by enormous eruptions of charged particles that could devastate life on any planets in their firing line.

via Space.com|
#astronomy#cme#magnetic-activity
astronomy2 years ago

Distant star's 'superflare' may have caused powerful solar storm.

Astronomers have observed one of the most powerful and gargantuan stellar flares ever seen from a distant star system called V1355 Orionis, which is about 400 light-years from Earth. The superflare is 10 times more massive than anything ever witnessed erupting from the sun and may have launched one of the largest coronal mass ejections (CMEs) ever observed. The study suggests that superflares originate from stars that are highly magnetically active and may be accompanied by enormous eruptions of charged particles that could devastate life on any planets in their firing line.

via Yahoo Life|
#astronomy#cme#magnetic-activity
science-and-astronomy2 years ago

Astronomers Solve Stellar Identity Crisis: Sun's Family Confirmed.

Scientists have debated whether the sun is really like the other stars in its family due to its different magnetic activity and rotation rates. However, an investigation using data from NASA's Kepler space telescope, the European Space Agency's Gaia mission, and the NASA-ESA Solar and Heliospheric Observatory has found that the sun does indeed belong in the group of sun-like stars. The difference in magnetic activity was caused by a disparity in the proportions of elements heavier than hydrogen and helium that make up the two stars' compositions. Despite some key differences, the sun fits in nicely with a family of stellar objects aptly called sun-like stars.

via Space.com|
#magnetic-activity#metallicity#rotation-rates