Zobrazeno 1 - 10
of 265
pro vyhledávání: '"Hudson, Hugh S"'
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:
Hudson, Hugh S.
Solar flares commonly have a hot onset precursor event" (HOPE), detectable from soft X-ray observations. Detecting this requires subtraction of pre-flare fluxes from the non-flaring Sun prior to the event, fitting an isothermal emission model to the
Externí odkaz:
http://arxiv.org/abs/2407.04567
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
M-dwarf flares observed by the \textit{Transiting Exoplanet Survey Satellite} (\textit{TESS}) sometimes exhibit a "peak-bump" light-curve morphology, characterized by a secondary, gradual peak well after the main, impulsive peak. A similar "late phas
Externí odkaz:
http://arxiv.org/abs/2310.19316
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:
Kerr, Graham S., Allred, Joel C., Kowalski, Adam F., Milligan, Ryan O., Hudson, Hugh S., Prado, Natalia Zambrana, Kucera, Therese A., Brosius, Jeffrey W.
Solar flares are efficient particle accelerators, with a substantial fraction of the energy released manifesting as non-thermal particles. While the role that non-thermal electrons play in transporting flare energy is well studied, the properties and
Externí odkaz:
http://arxiv.org/abs/2302.02017
Autor:
Hudson, Hugh S., Peticolas, Laura, Johnson, Calvin, White, Vivian, Bender, Mark, Pasachoff, Jay M., Oliveros, Juan Carlos Martínez, Collier, Braxton, Filippenko, Alexei V., Filippenko, Noelle, Fraknoi, Andrew, Gómez, Juan Camilo Guevara, Koh, Justin, Konerding, David, Krista, Larisza, Kruse, Brian, McIntosh, Scott, Mendez, Brian, Ruderman, Igor, Yan, Darlene, Zevin, Dan
Publikováno v:
Journal of Astronomical History and Heritage (ISSN 1440-2807), Vol. 24, No. 4, p. 1080-1089, 2021
The total solar eclipse of August 21, 2017, crossed the whole width of North America, the first occasion for this during the modern age of consumer electronics. Accordingly, it became a great opportunity to engage the public and to enlist volunteer o
Externí odkaz:
http://arxiv.org/abs/2207.13704
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:
Veronig, Astrid M., Odert, Petra, Leitzinger, Martin, Dissauer, Karin, Fleck, Nikolaus C., Hudson, Hugh S.
Publikováno v:
Nature Astronomy, Volume 5, p. 697-706 (2021)
Coronal mass ejections (CMEs) are huge expulsions of magnetized matter from the Sun and stars, traversing space with speeds of millions of kilometers per hour. Solar CMEs can cause severe space weather disturbances and consumer power outages on Earth
Externí odkaz:
http://arxiv.org/abs/2110.12029
Autor:
Cooper, Kristopher, Hannah, Iain G., Grefenstette, Brian W., Glesener, Lindsay, Krucker, Säm, Hudson, Hugh S., White, Stephen M., Smith, David M., Duncan, Jessie
We investigate the spatial, temporal, and spectral properties of 10 microflares from AR12721 on 2018 September 9 and 10 observed in X-rays using the Nuclear Spectroscopic Telescope ARray (NuSTAR) and the Solar Dynamic Observatory's Atmospheric Imagin
Externí odkaz:
http://arxiv.org/abs/2109.00263