Results 151 to 160 of about 150,775 (261)

Can Solar Limb Flare Prediction Be Properly Made by Extreme-ultraviolet Intensities?

open access: yesThe Astrophysical Journal Letters
We address the question of whether the solar limb flare prediction can be properly made by EUV intensity, which has less projection effects than solar white light and magnetogram data.
Jaewon Lee   +4 more
doaj   +1 more source

Enhanced Three-minute Oscillation above a Sunspot during a Solar Flare

open access: yesThe Astrophysical Journal
Three-minute oscillations are a common phenomenon in the solar chromosphere above a sunspot. Oscillations can be affected by the energy release process related to solar flares. In this paper, we report on an enhanced oscillation in flare event SOL2012-07-
Ya Wang   +4 more
doaj   +1 more source

ALEXIS: Recreating the X-Ray Emission from the Full Solar Disk as a Linear Combination of Discrete Regions in the Extreme Ultraviolet and Soft X-Rays

open access: yesThe Astrophysical Journal Supplement Series
Despite a wealth of multiwavelength, spatially resolved, time-domain solar activity data, an accurate and complete temporospatial solar flare census is unavailable, which impedes our understanding of the physics of flare production.
Jorge R. Padial Doble   +1 more
doaj   +1 more source

February 25, 2014 solar flare data analysis in SunPy

open access: yesPhysical Sciences and Technology, 2020
Solar flares are strong radiation bursts, whereas large clouds of solar material and magnetic fields that erupt at high speeds from the Sun are coronal mass ejections.
A. Sarsembayeva   +3 more
doaj  

Stealth Non-standard-model Confined Flare Eruptions: Sudden Reconnection Events in Ostensibly Inert Magnetic Arches from Sunspots

open access: yesThe Astrophysical Journal
We report seven examples of a long-ignored type of confined solar flare eruption that does not fit the standard model for confined flare eruptions. Because they are confined eruptions, do not fit the standard model, and unexpectedly erupt in ostensibly ...
Ronald L. Moore   +4 more
doaj   +1 more source

Upgrades of the ESPERTA forecast tool for solar proton events

open access: yesJournal of Space Weather and Space Climate
The Empirical model for Solar Proton Events Real Time Alert (ESPERTA) exploits three solar parameters (flare longitude, soft X-ray fluence, and radio fluence) to provide a timely prediction for the occurrence of solar proton events (SPEs, i.e., when the >
Laurenza Monica   +7 more
doaj   +1 more source

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