Results 101 to 110 of about 152,015 (264)
Solar Flares: The Gradual Phase [PDF]
Solar Physics, 1989 AbstractOne has to distinguish between two kinds of the gradual phase of flares: (1) a gradual phase during which no energy is released so that we see only cooling after the impulsive phase (a confined flare), and (2) a gradual phase during which energy release continues (a dynamic flare).The simplest case of (1) is a single-loop flare which might ...
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Response of the Thermosphere‐Ionosphere System to an X‐Class Solar Flare: 30 March 2022 Case Study
Space WeatherThe response of the thermosphere ionosphere system to an X1.3 class solar flare is studied using observations of the total electron content (TEC) and the Global Ionosphere Thermosphere Model (GITM) simulations.
Volkan Sarp, Erdal Yiğit, Ali Kilcik
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EFFECT OF THE X5.4 CLASS SOLAR FLARE EVENT OF SOLAR CYCLE 24 ON THE GPS SIGNAL RECEPTION IN PENINSULAR MALAYSIA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 In this paper, we examine the effect of solar flare event on the Global Positioning System (GPS) signal reception in Peninsular Malaysia during the X5.4 class solar flare on 7th March 2012, 00:24 UT at active region AR1429.
S. Ismail +3 more
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The relationships of solar flares with both sunspot and geomagnetic activity [PDF]
, 2011 The relationships between solar flare parameters (total importance, time duration, flare index, and flux) and sunspot activity (Rz) as well as those between geomagnetic activity (aa index) and the flare parameters can be well described by an integral response model with the response time scales of about eight and thirteen months, respectively. Compared
arxiv +1 more source
Skin Diseases in Long‐Distance Runners
JEADV Clinical Practice, Volume 4, Issue 2, Page 378-388, June 2025.Long‐distance/trails runners often experience various skin manifestations due to prolonged physical activity and environmental exposure (sun, heat, altitude, cold air, etc.). Common issues include blisters, chafing, calluses, nail dystrophy, and sunburn. Acne mechanica and fungal infections are also frequent due to sweat and occlusion. Proper skin care,
Henna Ahomies +3 more
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Particle Acceleration in Solar Flares [PDF]
International Astronomical Union Colloquium, 1989 AbstractParticle acceleration during solar flares is a complex process where the main ‘actors’ (Direct (D.C.) or turbulent electric fields) are hidden from us. It is easy to construct a successful particle accelertion model if we are allowed to impose on the flaring region arbitrary conditions (e.g., strength and scale length of the D.C.
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Space WeatherSolar flares are bursts of electromagnetic radiation originating in the Sun's atmosphere. Solar flares cause a rapid increase in ionization in the ionosphere, resulting in radio signal interference.
A. Mahmoudian +2 more
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Frontiers in Astronomy and Space SciencesThe effects of solar flares in the D-region ionosphere at two high-latitude stations: Maitri (70.75°S, 11.75°E) and Abisko (68.4°N, 18.9°E), located in different hemispheres are studied. We analyzed 37 M-class flares and 6 X-class flares of the year 2014,
Shipra Sinha +3 more
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Statistical analysis of short-wave fadeout for extreme space weather event estimation
Earth, Planets and Space, 2020 Solar flares trigger an increase in plasma density in the ionosphere including the D region, and cause the absorption of radio waves, especially in high-frequency (HF) ranges, called short-wave fadeout (SWF).
Chihiro Tao +7 more
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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