Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Klimchuk, James A"'
We present the first results of three-dimensional (3D) numerical magnetohydrodynamic (MHD) simulations of the onset of magnetic reconnection via the tearing instability in dynamically thinning current sheets in the solar corona. In all our simulation
Externí odkaz:
http://arxiv.org/abs/2406.04486
We present the results of models of impulsively heated coronal loops using the 1-D hydrodynamic Adaptively Refined Godunov Solver (ARGOS) code. The impulsive heating events (which we refer to as "nanoflares") are modeled by discrete pulses of energy
Externí odkaz:
http://arxiv.org/abs/2402.06799
Autor:
Uritsky, Vadim M., Klimchuk, James A.
We report results of an in-depth numerical investigation of three-dimensional projection effects which could influence the observed loop-like structures in an optically thin solar corona. Several archetypal emitting geometries are tested, including c
Externí odkaz:
http://arxiv.org/abs/2310.07102
The thickness of current sheets is extremely important, especially as it relates to the onset of fast magnetic reconnection. Onset determines how much magnetic free energy can build up in a field before it is explosively released. This has implicatio
Externí odkaz:
http://arxiv.org/abs/2307.13825
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:
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:
Rajhans, Abhishek, Tripathi, Durgesh, Kashyap, Vinay L., Klimchuk, James A., Ghosh, Avyarthana
Studying Doppler shifts provides deeper insights into the flow of mass and energy in the solar atmosphere. We perform a comprehensive measurement of Doppler shifts in the transition region and its center-to-limb variation (CLV) in the strong field re
Externí odkaz:
http://arxiv.org/abs/2301.06723
Autor:
Mondal, Biswajit, Klimchuk, James A, Vadawale, Santosh V., Sarkar, Aveek, Del Zanna, Giulio, Athiray, P. S., Mithun, N. P. S., Mason, Helen E., Bhardwaj, A.
Small-scale impulsive events, known as nanoflares, are thought to be one of the prime candidates that can keep the solar corona hot at its multi-million Kelvin temperature. Individual nanoflares are difficult to detect with the current generation ins
Externí odkaz:
http://arxiv.org/abs/2301.02519
Autor:
Nita, Gelu M., Fleishman, Gregory D., Kuznetsov, Alexey A., Anfinogentov, Sergey A., Stupishin, Alexey G., Kontar, Eduard P., Schonfeld, Samuel J., Klimchuk, James A., Gary, Dale E.
To facilitate the study of solar active regions and flaring loops, we have created a modeling framework, the freely distributed GX Simulator IDL package, that combines 3D magnetic and plasma structures with thermal and non-thermal models of the chrom
Externí odkaz:
http://arxiv.org/abs/2301.00795
It is extremely difficult to simulate the details of coronal heating and also make meaningful predictions of the emitted radiation. Thus, testing realistic models with observations is a major challenge. Observational signatures of coronal heating dep
Externí odkaz:
http://arxiv.org/abs/2211.00104