Results 101 to 110 of about 1,129,035 (260)

Detection of Three-minute Oscillations in Full-disk Lyα Emission during a Solar Flare [PDF]

, 2017
In this Letter we report the detection of chromospheric 3-minute oscillations in disk-integrated EUV irradiance observations during a solar flare. A wavelet analysis of detrended Lyα (from GOES/EUVS) and Lyman continuum (from Solar Dynamics Observatory ...
R. Milligan, B. Fleck, J. Ireland, L. Fletcher, B. Dennis   +4 more
semanticscholar   +1 more source

Impact of particulate matter exposure on melanoma risk: A multicentre case–control study

Journal of the European Academy of Dermatology and Venereology, EarlyView.
Long‐term exposure to higher levels of PM10 and PM2.5 may have a protective effect against melanoma, potentially due to the reduction in ultraviolet radiation. Abstract Background The relationship between particulate matter (PM) exposure and melanoma risk remains largely unexplored.
Francesco Bellinato, Giovanni Adami, Maria Antonietta Reatini, Giorgio Cattani, Maria Vittoria Cannizzaro, Laura Del Regno, Ketty Peris, Paolo Gisondi, Giampiero Girolomoni   +8 more
wiley   +1 more source

The Mars Topside Ionosphere Response to the X8.2 Solar Flare of 10 September 2017

Geophysical Research Letters, 2018
On 10 September 2017, irradiance from a magnitude X8.2 solar flare impacted Mars while the Mars Atmosphere and Volatile EvolutioN (MAVEN) orbiter was characterizing the Mars upper atmosphere.
E. Thiemann, L. Andersson, R. Lillis, P. Withers, S. Xu, M. Elrod, Shraddha Jain, M. Pilinski, D. Pawlowski, P. Chamberlin, F. Eparvier, M. Benna, C. Fowler, S. Curry, W.K. (Bill) Peterson, J. Deighan   +15 more
semanticscholar   +1 more source

Pulsations in the Earth's Lower Ionosphere Synchronized With Solar Flare Emission [PDF]

, 2017
Solar flare emission at X‐ray and extreme ultraviolet (EUV) energies can cause substantial enhancements in the electron density in the Earth's lower ionosphere.
L. Hayes, P. Gallagher, J. McCauley, B. Dennis, J. Ireland, A. Inglis   +5 more
semanticscholar   +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, EarlyView.
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

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

Unified Relationship between Cold Plasma Ejections and Flare Energies Ranging from Solar Microflares to Giant Stellar Flares

The Astrophysical Journal, 2023
We often find spectral signatures of chromospheric cold plasma ejections accompanied by flares in a wide range of spatial scales in the solar and stellar atmospheres.
Yuji Kotani, Kazunari Shibata, Takako T. Ishii, Daiki Yamasaki, Kenichi Otsuji, Kiyoshi Ichimoto, Ayumi Asai   +6 more
doaj   +1 more source

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 ...
openaire   +2 more sources

A primitive asteroid that lived fast and died young sampled by a xenolith in the Cold Bokkeveld CM2 carbonaceous chondrite

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 464-483, March 2025.
Abstract Xenoliths in carbonaceous chondrites include lithologies that are unrepresented in the meteorite record and so are a rich source of information on asteroid diversity. Cold Bokkeveld is a CM2 regolith breccia that contains both hydrous and anhydrous lithic clasts. Here, we describe a hydrous clast with a fine‐grained rim.
Martin R. Lee, Cameron J. Floyd, Robin Haller, Sammy Griffin   +3 more
wiley   +1 more source

Response of the Thermosphere‐Ionosphere System to an X‐Class Solar Flare: 30 March 2022 Case Study

Space Weather
The 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
doaj   +1 more source