Results 81 to 90 of about 51,333 (260)

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, Michi Nishioka, Susumu Saito, Daikou Shiota, Kyoko Watanabe, Naoto Nishizuka, Takuya Tsugawa, Mamoru Ishii   +7 more
doaj   +1 more source

New cases of δ‐aminolevulinic acid dehydratase deficiency: Functional insights into gene variants using an innovative mouse liver model

Journal of Internal Medicine, Volume 299, Issue 1, Page 126-142, January 2026.
Abstract Background Dysfunction of δ‐aminolevulinic acid dehydratase (ALAD), the second enzyme involved in heme biosynthesis, leads to two pathologies: genetic and acquired. The genetic form is an ultrarare, severe childhood‐onset disease inherited in an autosomal recessive manner, whereas the acquired form usually affects adults due to enzyme ...
Elena Di Pierro, Isabel Solares, Daniel Jericó, Francisco J. Castelbón, Javier Tomás Solera, Antoni Riera‐Mestre, María Barreda‐Sánchez, Carlo Poci, Annamaria Nicolli, Francesco Urigo, Ana Sampedro, Rafael Enríquez de Salamanca, Matteo Marcacci, Matías A. Ávila, Pauline Harper, Marta G. Fanlo‐Maresma, Encarna Guillén‐Navarro, Giovanna Graziadei, Andrea Wenzel, Bodo B. Beck, Paolo Ventura, Montserrat Morales‐Conejo, Antonio Fontanellas   +22 more
wiley   +1 more source

Solar Flare Activity, 1937–2024: Introducing the New Hemispheric Solar Flare Index (hSFI) in the Context of 2024's Major Solar Storm Events

Space Weather
A new daily composite of the solar flare index (SFI) and the hemispherically‐resolved versions (hSFI) are presented for 1937 to 2024. The data set confirms that the northern hemisphere (NH) dominated solar flare activity during Solar Cycles 17 to 21, but
V. M. Velasco Herrera, W. Soon, S. Knoška, A. Özgüç, G. Velasco Herrera, H. Yeşilyaprak, N. Babynets, M. Švanda, J. Muraközy, S. Qiu, D. Riveros‐Rosas, R. Connolly, M. Connolly, A. Tlatov, L. Cappellotto   +14 more
doaj   +1 more source

A magnetic avalanche as the central engine powering a solar flare

Astronomy & Astrophysics
Solar flares are the most powerful, magnetically driven, explosions in the heliosphere. The nature of magnetic energy release in the solar corona that heats the plasma and accelerates particles in a flare, however, remains poorly understood.
Chitta L. P., Pontin D. I., Priest E. R., Berghmans D., Kraaikamp E., Rodriguez L., Verbeeck C., Zhukov A. N., Krucker S., Aznar Cuadrado R., Calchetti D., Hirzberger J., Peter H., Schühle U., Solanki S. K., Teriaca L., Giunta A. S., Auchère F., Harra L., Müller D.   +19 more
doaj   +1 more source

On the Optimal Prediction of Extreme Events in Heavy‐Tailed Time Series With Applications to Solar Flare Forecasting

Journal of Time Series Analysis, Volume 47, Issue 1, Page 25-42, January 2026.
ABSTRACT The prediction of extreme events in time series is a fundamental problem arising in many financial, scientific, engineering, and other applications. We begin by establishing a general Neyman–Pearson‐type characterization of optimal extreme event predictors in terms of density ratios.
Victor Verma, Stilian Stoev, Yang Chen
wiley   +1 more source

Image Synthesis for Solar Flare Prediction

The Astrophysical Journal Supplement Series
Solar flare prediction is a topic of interest to many researchers owing to the potential of solar flares to affect various technological systems, both terrestrial and in orbit.
Elad Amar, Ohad Ben-Shahar
doaj   +1 more source

Description and modeling of the Jiddat al Harasis 091 L5 strewn field

Meteoritics &Planetary Science, Volume 61, Issue 1, Page 107-121, January 2026.
Abstract With a size of 51.2 × 7.2 km, the 10.9 ± 1.7 ka old Jiddat al Harasis 091 L5 chondrite strewn field is the largest known in Oman. It consists of more than 700 meteorites with a total mass of >4.5 tons from which the largest six stones of >100 kg to 1.5 tons make up two thirds of the total mass.
Karl Wimmer, Edwin Gnos, Beda Hofmann, Sandro Boschetti, Jan Walbrecker, Hansruedi Maurer   +5 more
wiley   +1 more source

Solar Flare

Materials Today, 2011
Fakhouri, Sami M., Zhang, Lei, Briseno, Alejandro L.   +2 more
  +5 more sources

Solar flares and energetic particles [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Solar flares are now observed at all wavelengths from γ -rays to decametre radio waves. They are commonly associated with efficient production of energetic particles at all energies. These particles play a major role in the active Sun because they contain a large amount of the energy released during flares ...
openaire   +3 more sources

The Thermal Properties of Solar Flares Over Three Solar Cycles Using GOES X-ray Observations

, 2012
Solar flare X-ray emission results from rapidly increasing temperatures and emission measures in flaring active region loops. To date, observations from the X-Ray Sensor (XRS) onboard the Geostationary Operational Environmental Satellite (GOES) have been
A. Kim Tolbert, Aschwanden, Aschwanden, Brian R. Dennis, C. Alex Young, Carmichael, Caspi, Christe, Daniel F. Ryan, Feldman, Fludra, Hannah, Landi, Peter T. Gallagher, Phillips, Phillips, Richard A. Schwartz, Ryan O. Milligan   +17 more
core   +1 more source