Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Fletcher, Lyndsay"'
Autor:
Hudson, Hugh S., Cliver, Edward. W., Fletcher, Lyndsay, Diver, Declan A., Gallagher, Peter T., Li, Ying, Osborne, Christopher M. J., Stark, Craig, Su, Yang
The geomagnetic "solar flare effect" (SFE) results from excess ionization in the Earth's ionosphere, famously first detected at the time of the Carrington flare in 1859. This indirect detection of a flare constituted one of the first cases of "multim
Externí odkaz:
http://arxiv.org/abs/2407.09233
Autor:
Simões, Paulo J. A., Fletcher, Lyndsay, Hudson, Hugh S., Kerr, Graham S., Penn, Matt, Lopez, Karla F.
Solar flares are powerful particle accelerators, and in the accepted standard flare model most of the flare energy is transported from a coronal energy-release region by accelerated electrons which stop collisionally in the chromosphere, heating and
Externí odkaz:
http://arxiv.org/abs/2406.11361
We have systematically investigated ultraviolet (UV) emission from molecular hydrogen (H$_{2}$) using the Interface Region Imaging Spectrometer (IRIS), during three X-ray flares of C5.1, C9.7 and X1.0 classes on Oct. 25, 2014. Significant emission fr
Externí odkaz:
http://arxiv.org/abs/2309.07799
Autor:
da Silva, Douglas Félix, Hui, Li, Simões, Paulo J. A., Valio, Adriana, R., Joaquim C. E., Hudson, Hugh S., Simoes, Paulo J. A., Fletcher, Lyndsay, Hayes, Laura A., Hannah, Iain G.
Understanding the physical processes that trigger solar flares is paramount to help with forecasting space weather and mitigating the effects on our technological infrastructure. A previously unknown phenomenon was recently identified in solar flares
Externí odkaz:
http://arxiv.org/abs/2308.11017
Autor:
Carlsson, Mats, Fletcher, Lyndsay, Allred, Joel, Heinzel, Petr, Kasparova, Jana, Kowalski, Adam, Mathioudakis, Mihalis, Reid, Aaron, Simoes, Paulo J. A.
Publikováno v:
A&A 673, A150 (2023)
Context: Solar flares are the result of the sudden release of magnetic energy in the corona. Much of this energy goes into accelerating charged particles to high velocity. These particles travel along the magnetic field and the energy is dissipated w
Externí odkaz:
http://arxiv.org/abs/2304.02618
Publikováno v:
Astronomy & Geophysics, 2022, Volume 63, Issue 6, pp.6.34-6.39
David Kuridze, Lyndsay Fletcher and Hugh Hudson report on the RAS Specialist Discussion Meeting '3D Structure of the Flare Chromosphere'.
Comment: Journal: Astronomy & Geophysics (URL) to the published version of the Article - https://academic.o
Comment: Journal: Astronomy & Geophysics (URL) to the published version of the Article - https://academic.o
Externí odkaz:
http://arxiv.org/abs/2303.16901
Numerical models of solar flares typically focus on the behaviour of directly-heated flare models, adopting magnetic field- aligned, plane-parallel methodologies. With high spatial- and spectral-resolution ground-based optical observations of flares,
Externí odkaz:
http://arxiv.org/abs/2209.03238
Autor:
Lin, Haosheng, Anan, Tetsu, Cauzzi, Gianna, Fletcher, Lyndsay, Huang, Pei, Kowalski, Adam, Kramar, Maxim, Qiu, Jiong, Samra, Jenna, Spittler, Constance, Sukegawa, Takashi, Wirth, Gregory
The Sun's proximity offers us a unique opportunity to study in detail the physical processes on a star's surface; however, the highly dynamic nature of the stellar surface -- in particular, energetic eruptions such as flares and coronal mass ejection
Externí odkaz:
http://arxiv.org/abs/2209.00788
Autor:
Hudson, Hugh S., Mulay, Sargam M., Fletcher, Lyndsay, Docherty, Jennifer, Fitzpatrick, Jimmy, Pike, Eleanor, Strong, Morven, Chamberlin, Phillip C., Woods, Thomas N.
We report the discovery and characterization of high-speed (>100 km/s) horizontal flows in solar active regions, making use of the Sun-as-a-star spectroscopy in the range 5-105 nm provided by the EVE (Extreme Ultraviolet Variability Experiment) spect
Externí odkaz:
http://arxiv.org/abs/2207.13461
Autor:
Labrosse, Nicolas, Rodger, Andrew S., Radziszewski, Krzysztof, Rudawy, Paweł, Antolin, Patrick, Fletcher, Lyndsay, Levens, Peter J., Peat, Aaron W., Schmieder, Brigitte, Simões, Paulo J. A.
We present the first observation of a solar prominence at $84-116$ GHz using the high resolution interferometric imaging of ALMA. Simultaneous observations in H$\alpha$ from Bia{\l}kaw Observatory and with SDO/AIA reveal similar prominence morphology
Externí odkaz:
http://arxiv.org/abs/2202.12434