Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Antiochos, Spiro K"'
Magnetic reconnection is widely believed to be the fundamental process in the solar atmosphere that underlies magnetic energy release and particle acceleration. This process is responsible for the onset of solar flares, coronal mass ejections, and ot
Externí odkaz:
http://arxiv.org/abs/2407.07687
Autor:
Kumar, Pankaj, Karpen, Judith T., Uritsky, Vadim M., Deforest, Craig E., Raouafi, Nour E., DeVore, C. Richard, Antiochos, Spiro K.
Microstreams are fluctuations in the solar wind speed and density associated with polarity-reversing folds in the magnetic field (also denoted switchbacks). Despite their long heritage, the origin of these microstreams/switchbacks remains poorly unde
Externí odkaz:
http://arxiv.org/abs/2305.06914
Autor:
Kumar, Pankaj, Karpen, Judith T., Antiochos, Spiro K., DeVore, C. Richard, Wyper, Peter F., Cho, Kyung-Suk
We report a detailed analysis of a failed eruption and flare in active region 12018 on 2014 April 3 using multiwavelength observations from SDO/AIA, IRIS, STEREO, and Hinode/SOT. At least four jets were observed to emanate from the cusp of this small
Externí odkaz:
http://arxiv.org/abs/2212.11159
We present numerical models from the field-aligned Hydrodynamics and Radiation Code (HYDRAD) of a highly asymmetric closed coronal loop with near-singular expansion factor. This loop was chosen to simulate a coronal magnetic flux tube that passes clo
Externí odkaz:
http://arxiv.org/abs/2212.08529
Autor:
Fouhey, David F., Higgins, Richard E. L., Antiochos, Spiro K., Barnes, Graham, DeRosa, Marc L., Hoeksema, J. Todd, Leka, K. D., Liu, Yang, Schuck, Peter W., Gombosi, Tamas I.
We investigate the cross-calibration of the Hinode/SOT-SP and SDO/HMI instrument meta-data, specifically the correspondence of the scaling and pointing information. Accurate calibration of these datasets gives the correspondence needed by inter-instr
Externí odkaz:
http://arxiv.org/abs/2209.15036
The solar corona routinely exhibits explosive activity, in particular coronal mass ejections and their accompanying eruptive flares, that have global-scale consequences. These events and their smaller counterparts, coronal jets, originate in narrow,
Externí odkaz:
http://arxiv.org/abs/2112.00641
Solar flares may be the best-known examples of the explosive conversion of magnetic energy into bulk motion, plasma heating, and particle acceleration via magnetic reconnection. The energy source for all flares is the highly sheared magnetic field of
Externí odkaz:
http://arxiv.org/abs/2110.04132
Autor:
Naus, Stephen J., Qiu, Jiong, DeVore, C. Richard, Antiochos, Spiro K., Dahlin, Joel T., Drake, James F., Swisdak, Marc
We analyze the structure and evolution of ribbons from the M7.3 SOL2014-04-18T13 flare using ultraviolet (UV) images from IRIS and SDO/AIA, magnetic data from SDO/HMI, hard X-ray (HXR) images from RHESSI, and light curves from Fermi/GBM, in order to
Externí odkaz:
http://arxiv.org/abs/2109.15314
Autor:
Higgins, Richard E. L., Fouhey, David F., Antiochos, Spiro K., Barnes, Graham, Cheung, Mark C. M., Hoeksema, J. Todd, Leka, KD, Liu, Yang, Schuck, Peter W., Gombosi, Tamas I.
Both NASA's Solar Dynamics Observatory (SDO) and the JAXA/NASA Hinode mission include spectropolarimetric instruments designed to measure the photospheric magnetic field. SDO's Helioseismic and Magnetic Imager (HMI) emphasizes full-disk high-cadence
Externí odkaz:
http://arxiv.org/abs/2108.12421
Publikováno v:
Front. Astron. Space Sci., 8:662861 (2021)
We argue that the magnetically closed corona evolves primarily quasi-statically, punctuated by many localized bursts of activity associated with magnetic reconnection at a myriad of small current sheets. The sheets form by various processes that do n
Externí odkaz:
http://arxiv.org/abs/2105.12212