Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Antonia Savcheva"'
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 11 (2024)
We present a magnetic configuration of a compound solar eruption observed on 2012 March 10, from NOAA AR 11429 near the disk center, which displayed a soft X-ray sigmoid before the eruption. We constructed a series of magnetic field models, including
Externí odkaz:
https://doaj.org/article/e211cf33c27b408fb86474e1f7cd29c8
Violent solar flares and coronal mass ejections (CMEs) are magnetic phenomena. However, how magnetic fields reconnecting in the flare differ from non-flaring magnetic fields remains unclear owing to the lack of studies of the flare magnetic propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0463c48b93383a159e9700e04a40f741
http://arxiv.org/abs/2111.06048
http://arxiv.org/abs/2111.06048
Publikováno v:
The Astrophysical Journal. 938:150
We investigate the topological evolution of coronal jet containing a sigmoid-like flux rope using a nonlinear force-free field model obtained with the flux-rope insertion method and magnetofrictional relaxation. We examine the topological evolution p
Laboratory study of the torus instability threshold in solar-relevant, line-tied magnetic flux ropes
Autor:
Hantao Ji, Clayton E. Myers, Antonia Savcheva, Masaaki Yamada, Aaron Goodman, Bernhard Kliem, Andrew Alt, Jonathan Jara-Almonte, Sayak Bose, Jongsoo Yoo
Coronal mass ejections (CME) occur when long-lived magnetic flux ropes (MFR) anchored to the solar surface destabilize and erupt away from the Sun. This destabilization is often described in terms of an ideal magnetohydrodynamic (MHD) instability cal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb9620abd06b6bba773affe272cbec37
http://arxiv.org/abs/2010.10607
http://arxiv.org/abs/2010.10607
Autor:
David Long, Lidia van Driel-Gesztelyi, David R. Williams, Stephanie L. Yardley, Duncan H. Mackay, Antonia Savcheva, Lucie M. Green
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2019, 887 (2), pp.240. ⟨10.3847/1538-4357/ab54d2⟩
The Astrophysical Journal, American Astronomical Society, 2019, 887 (2), pp.240. ⟨10.3847/1538-4357/ab54d2⟩
We present observations and magnetic field models of an intermediate filament present on the Sun in August 2012, associated with a polarity inversion line that extends from AR 11541 in the east into the quiet sun at its western end. A combination of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0846056227425efaa0d86048d1907bdd
https://hal.archives-ouvertes.fr/hal-03123959
https://hal.archives-ouvertes.fr/hal-03123959
Autor:
Edward E. DeLuca, Nishu Karna, Kévin Dalmasse, Katharine K. Reeves, Svetlin Tassev, Sarah Gibson, Antonia Savcheva
Publikováno v:
The Astrophysical Journal. 913:47
In this study, we present the magnetic configuration of an erupting pseudostreamer observed on 2015 April 19, on the southwest limb of the Sun, with a prominence cavity embedded inside. The eruption resulted in a partial halo coronal mass ejection. T
K.A.M. and D.H.M. gratefully acknowledge the support of the Leverhulme Trust, the STFC and the Carnegie Trust for the Universities of Scotland. K.A.M., A.S.S., and E.E.D. thank ISSI (Bern) for their support of the team "Understanding Solar Jets and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ab89a05680889a50f3c78dab3fe2677
https://hdl.handle.net/10023/18540
https://hdl.handle.net/10023/18540
Autor:
N. Mathews, Natasha Flyer, Edward E. DeLuca, Antonia Savcheva, Yuhong Fan, Douglas Nychka, Sarah Gibson, Kévin Dalmasse
Deriving the strength and direction of the three-dimensional (3D) magnetic field in the solar atmosphere is fundamental for understanding its dynamics. Volume information on the magnetic field mostly relies on coupling 3D reconstruction methods with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32d3cfaacd13c8ecfaf9d0b1b7d27cf8
http://arxiv.org/abs/1904.06308
http://arxiv.org/abs/1904.06308
Autor:
Katharine K. Reeves, Timothy S. Bastian, Antonia Savcheva, Sijie Yu, Samaiyah Farid, Bin Chen, Svetlin Tassev, Fan Guo, Marina Battaglia, Säm Krucker
Magnetic reconnection, the central engine that powers explosive phenomena throughout the Universe, is also perceived as one of the principal mechanisms for accelerating particles to high energies. Although various signatures of magnetic reconnection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5f018bf380130bb201e717fd4435f31
http://arxiv.org/abs/1808.05951
http://arxiv.org/abs/1808.05951
Publikováno v:
Solar Physics
Solar Physics, Springer Verlag, 2018, 293 (6), ⟨10.1007/s11207-018-1314-5⟩
Solar Physics, Springer Verlag, 2018, 293 (6), ⟨10.1007/s11207-018-1314-5⟩
Magnetic helicity is a quantity of great importance in solar studies because it is conserved in ideal magneto-hydrodynamics. While many methods to compute magnetic helicity in Cartesian finite volumes exist, in spherical coordinates, the natural coor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f504f6d4f57e14d1a495aafa2ece2ad9
https://hal.archives-ouvertes.fr/hal-02321813
https://hal.archives-ouvertes.fr/hal-02321813