Zobrazeno 1 - 10
of 698
pro vyhledávání: '"Kerr, P. S."'
Autor:
Granovsky, Samuel, Kosovichev, Alexander G., Sadykov, Viacheslav M., Kerr, Graham S., Allred, Joel C.
Between 2017 and 2024, the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory has observed numerous white-light solar flares (WLFs). HMI spectro-polarimetric observations of certain WLFs, in particular the X9.3 flare of Sep
Externí odkaz:
http://arxiv.org/abs/2410.07440
Autor:
Kerr, Oliver S.
Steady-state perturbations to a stagnation point flow of the form ${\bf U}=(0,A'y,-A'z)$ are known which consist of a periodic array of counter-rotating vortices whose axes are parallel to the $y$-axis and which lie in the plane $z=0$. A new understa
Externí odkaz:
http://arxiv.org/abs/2409.09695
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
Solar flare ribbon fronts appear ahead of the bright structures that normally characterise solar flares, and can persist for an extended period of time in spatially localised patches before transitioning to `regular' bright ribbons. They likely repre
Externí odkaz:
http://arxiv.org/abs/2405.02799
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
The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release and transport processes. High quality observations from the IRIS spac
Externí odkaz:
http://arxiv.org/abs/2310.07111
Here we present the study of a compact emission source during an X1.3 flare on 2022-March-30. Within a $\sim41$~s period (17:34:48 UT to 17:35:29 UT), IRIS observations show spectral lines of Mg II, C II and Si IV with extremely broadened, asymmetric
Externí odkaz:
http://arxiv.org/abs/2309.05745
Autor:
Allred, Joel C., Kerr, Graham S., Alaoui, Meriem, Buitrago-Casas, Juan Camilo, Caspi, Amir, Chen, Bin, Chen, Thomas Y., Glesener, Lindsay, Guidoni, Silvina E., Guo, Fan, Karpen, Judith T., Musset, Sophie, Reeves, Katharine K., Shih, Albert Y.
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #010 (10pp); 2023 July 31
Solar flares and coronal mass ejections are interrelated phenomena that together are known as solar eruptive events. These are the main drivers of space weather and understanding their origins is a primary goal of Heliophysics. In this white paper, w
Externí odkaz:
http://arxiv.org/abs/2307.14946
Autor:
Sadykov, Viacheslav, Stefan, John, Kosovichev, Alexander, Allred, Joel, Kerr, Graham S, Stejko, Andrey, Kowalski, Adam
SDO/HMI observations reveal a class of solar flares with substantial energy and momentum impacts in the photosphere, concurrent with white-light emission and helioseismic responses, known as sunquakes. Previous radiative hydrodynamic modeling has dem
Externí odkaz:
http://arxiv.org/abs/2306.13162
Autor:
Glesener, Lindsay, Shih, Albert Y., Caspi, Amir, Milligan, Ryan, Hudson, Hugh, Oka, Mitsuo, Buitrago-Casas, Juan Camilo, Guo, Fan, Ryan, Dan, Kontar, Eduard, Veronig, Astrid, Hayes, Laura A., Inglis, Andrew, Golub, Leon, Vilmer, Nicole, Gary, Dale, Reid, Hamish, Hannah, Iain, Kerr, Graham S., Reeves, Katharine K., Allred, Joel, Guidoni, Silvina, Yu, Sijie, Christe, Steven, Musset, Sophie, Dennis, Brian, Oliveros, Juan Carlos Martínez, Athiray, P. S., Vievering, Juliana, White, Stephen, Winebarger, Amy, Drake, James, Jeffrey, Natasha, Antiochos, Spiro, Duncan, Jessie, Zhang, Yixian, Alaoui, Meriem, Simões, Paulo J. A., Battaglia, Marina, Setterberg, William, Masek, Reed, Chen, Thomas Y., Peterson, Marianne, Krucker, Säm, Temmer, Manuela, Saint-Hilaire, Pascal, Petrosian, Vahe, Knuth, Trevor, Moore, Christopher S.
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #129 (14pp); 2023 July 31
Understanding the nature of energetic particles in the solar atmosphere is one of the most important outstanding problems in heliophysics. Flare-accelerated particles compose a huge fraction of the flare energy budget; they have large influences on h
Externí odkaz:
http://arxiv.org/abs/2306.05447