Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Allred, Joel"'
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
Optical flares have been observed from magnetically active stars for many decades; unsurprisingly, the spectra and temporal evolution are complicated. For example, the shortcomings of optically thin, static slab models have long been recognized when
Externí odkaz:
http://arxiv.org/abs/2404.13214
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
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:
Christe, Steven, Alaoui, Meriem, Allred, Joel, Battaglia, Marina, Baumgartner, Wayne, Buitrago-Casas, Juan Camilo, Caspi, Amir, Chen, Bin, Chen, Thomas, Dennis, Brian, Drake, James, Glesener, Lindsay, Hannah, Iain, Hayes, Laura A., Hudson, Hugh, Inglis, Andrew, Ireland, Jack, Klimchuk, James, Kowalski, Adam, Krucker, Säm, Massone, Anna Maria, Musset, Sophie, Piana, Michele, Ryan, Daniel, Shih, Albert Y., Veronig, Astrid, Vilmer, Nicole, Warmuth, Alexander, White, Stephen
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #065 (13pp); 2023 July 31
FOXSI is a direct-imaging, hard X-ray (HXR) telescope optimized for solar flare observations. It detects hot plasma and energetic electrons in and near energy release sites in the solar corona via bremsstrahlung emission, measuring both spatial struc
Externí odkaz:
http://arxiv.org/abs/2306.15071
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:
Shih, Albert Y., Glesener, Lindsay, Krucker, Säm, Guidoni, Silvina, Christe, Steven, Reeves, Katharine K., Gburek, Szymon, Caspi, Amir, Alaoui, Meriem, Allred, Joel, Battaglia, Marina, Baumgartner, Wayne, Dennis, Brian, Drake, James, Goetz, Keith, Golub, Leon, Hannah, Iain, Hayes, Laura, Holman, Gordon, Inglis, Andrew, Ireland, Jack, Kerr, Graham, Klimchuk, James, McKenzie, David, Moore, Christopher S., Musset, Sophie, Reep, Jeffrey, Ryan, Daniel, Saint-Hilaire, Pascal, Savage, Sabrina, Seaton, Daniel B., Stęślicki, Marek, Woods, Thomas N.
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #364 (5pp); 2023 July 31
It is essential that there be coordinated and co-optimized observations in X-rays, gamma-rays, and EUV during the peak of solar cycle 26 (~2036) to significantly advance our understanding of impulsive energy release in the corona. The open questions
Externí odkaz:
http://arxiv.org/abs/2306.11777
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
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
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