Results 31 to 40 of about 1,439,753 (202)
A NEW METHOD FOR NORTH-SOUTH ASYMMETRY OF SUN SPOT AREA ANALYSIS [PDF]
Journal of Astronomy and Space Sciences, 2007 We have studied the temporal variation in the North-South asymmetry of the sunspot area during the period from 1874 to 2007. Though the 9-year periodicity is commonly reported, shorter periodicities is still under study.
Heon-Young Chang
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The quiet sun at mm wavelengths as seen by ALMA
Frontiers in Astronomy and Space Sciences, 2022 Solar observations at sub-mm, mm and cm wavelengths offer a straightforward diagnostic of physical conditions in the solar atmosphere because they yield measurement of brightness temperature which, for optically thick features, equals intrinsic ...
Costas E. Alissandrakis +2 more
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Coronal seismology by slow waves in non-adiabatic conditions
Frontiers in Astronomy and Space Sciences, 2022 Slow magnetoacoustic waves represent an important tool for probing the solar coronal plasma. The majority of seismological methods with slow waves are based on a weakly non-adiabatic approach, which assumes the coronal energy transport has only weak ...
Dmitrii Y. Kolotkov
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FoodsGrenache (GN) and Cabernet Sauvignon (CS) are two traditional red grape varieties widely cultivated in the Mediterranean area and both late-ripening cultivars, which makes them less sensitive to global warming conditions and more stable to harvest timing.
Daniel Rico +7 more
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Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
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The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun
GalaxiesWe estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes.
Alexandr Riehokainen +3 more
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DIAGNOSTICS OF LOCAL MAGNETIC FIELDS IN SOLAR FLARES USING FeI 5383 AND MgI 5528 LINES
Odessa Astronomical Publications, 2014 Main purpose of the present work is to estimate upper limit of the local magnetic field strength in solar flares using spectral lines FeI 5383 and MgI 5528. These lines like FeI 5233 have low Landé factors (1.12 and 1.00, respectively) and
V. G. Lozitsky, O. V. Lozitsky
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Very high energy proton peak flux model
Journal of Space Weather and Space Climate, 2020 Solar energetic particles (SEPs) pose a serious radiation hazard to spacecraft and astronauts. The highest energy SEPs are a significant threat even in heavily shielded applications.
Raukunen Osku +9 more
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Data mining for science of the sun-earth connection as a single system
Frontiers in Astronomy and Space Sciences, 2023 Establishing the Sun-Earth connection requires overcoming the challenges of exploring the data from past and current missions and leveraging tools and models (data mining) to create an efficient system treatment of the Sun and heliosphere. However, solar
Nathalia Alzate +12 more
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