Results 111 to 120 of about 150,775 (261)
Early Abnormal Temperature Structure of X-ray Looptop Source of Solar Flares [PDF]
, 2008 This Letter is to investigate the physics of a newly discovered phenomenon -- contracting flare loops in the early phase of solar flares. In classical flare models, which were constructed based on the phenomenon of expansion of flare loops, an energy releasing site is put above flare loops.
arxiv +1 more source
The role of eruption in solar flares [PDF]
Solar Physics, 1989 AbstractThis article focuses on two problems involved in the development of models of solar flares. The first concerns the mechanism responsible for eruptions, such as erupting filaments or coronal mass ejections, that are sometimes involved in the flare process.
openaire +3 more sources
Studying the Inner Heliosphere Using Radio Signals Transmitted From Spacecraft Orbiting Mars
Space Weather, Volume 23, Issue 5, May 2025.Abstract In this campaign, we used very long baseline interferometry (VLBI) radio telescopes to track the carrier radio signal transmitted from spacecraft orbiting Mars during the Mars solar conjunction. The campaign extended from September 6th $6\text{th}$ to November 6th $6\text{th}$ 2021 and targeted the Mars Express (MEX) and Tianwen‐1 (TIW ...
J. Edwards +4 more
wiley +1 more source
Detecting Solar Neutrino Flare in Megaton and km^3 detectors
, 2009 To foresee a solar flare neutrino signal we infer its upper and lower bound. The upper bound was derived since a few years by general energy equipartition arguments on observed solar particle flare.
Daniele Fargion +6 more
core +1 more source
The Shape of M Dwarf Flares in Kepler Light Curves [PDF]
, 2015 Ultra-precise light curves from Kepler provide the best opportunity to determine rates and statistical properties of stellar flares. From 11 months of data on the active M4 dwarf, GJ 1243, we have built the largest catalog of flares for a single star: over 6100 events.
arxiv +1 more source
A Novel Model for Forecasting Geomagnetic Indices Using Machine Learning
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Widely used geomagnetic activity indices like Kp or Dst, derived from the combined data from several observatories distributed worldwide, are crucial to forecasting since solar‐driven geomagnetic activity can significantly affect technology and human activities on Earth and in near‐Earth space.
Guram Kervalishvili +4 more
wiley +1 more source
Solar Flare Measurements with STIX and MiSolFA
, 2014 Solar flares are the most powerful events in the solar system and the brightest sources of X-rays, often associated with emission of particles reaching the Earth and causing geomagnetic storms, giving problems to communication, airplanes and even black ...
Casadei, Diego
core +1 more source
The Relationship Between EUV Nonthermal Line Broadening and High-energy Particle During Solar Flare [PDF]
, 2013 We have studied the relationship between the location of EUV nonthermal broadening and high-energy particles during the large flares by using EUV imaging spectrometer onboard {\it Hinode}, Nobeyama Radio Polarimeter, Nobeyama Radioheliograph, and Atmospheric Imaging Assembly onboard {\it Solar Dynamic Observatory}. We have analyzed the five large flare
arxiv +1 more source
Severe Distortion of the Apparent Resistivity Induced by the Super Geomagnetic Storm in May 2024
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract The potential hazard of geomagnetically induced current (GIC) in metallic pipelines caused by space weather events is a widely discussed topic. On 10–11 May 2024, a super geomagnetic storm with Kp = 9 comparable to the Halloween event in 2003 occurred. The storm induced GIC caused severe distortion in apparent resistivity is a novel phenomenon.
Xin Zhang +4 more
wiley +1 more source
The Astrophysical JournalThe impulsive phase of solar flares is often accompanied by the depletion of the elements with low first ionization potential (FIP), whose abundance decreases from the coronal level to the photospheric level, and then recovers back to the coronal level ...
Man-Hei Ng, Xiaoping Zhang, P. F. Chen
doaj +1 more source