Zobrazeno 1 - 10
of 33
pro vyhledávání: '"William P. Abbett"'
Publikováno v:
The Astrophysical Journal Supplement Series. 254:1
Recent efforts coupling our Sun-to-Earth magnetohydrodynamics (MHD) model and lower-corona magnetofrictional (MF) model are described. Our Global Heliospheric MHD (GHM) model uses time-dependent three-component magnetic field data from the lower-coro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45d17d0f2b9baf711ea838345f314b5d
https://doi.org/10.3847/1538-4365/abe9b5
https://doi.org/10.3847/1538-4365/abe9b5
Autor:
Erkka Lumme, Maria D. Kazachenko, Marc L. DeRosa, Keiji Hayashi, Brian T. Welsch, Mark C. M. Cheung, J. Todd Hoeksema, David J. Bercik, B. J. Lynch, Yang Liu, William P. Abbett, George H. Fisher, Xudong Sun
Publikováno v:
The Astrophysical Journal Supplement Series. 250:28
The Coronal Global Evolutionary Model (CGEM) provides data-driven simulations of the magnetic field in the solar corona to better understand the build-up of magnetic energy that leads to eruptive events. The CGEM project has developed six capabilitie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca490d4f155196fcf077dcc90c2af41d
https://doi.org/10.3847/1538-4365/abb3fb
https://doi.org/10.3847/1538-4365/abb3fb
Autor:
William P. Abbett, Vladimir Airapetian, Benjamin J. Lynch, Maria D. Kazachenko, Lisa Rosén, Oleg Kochukhov, Teresa Lüftinger, C. Richard DeVore
Publikováno v:
Astrophys J
Observations from the Kepler mission have revealed frequent superflares on young and active solar-like stars. Superflares result from the large-scale restructuring of stellar magnetic fields, and are associated with the eruption of coronal material (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fa9e05b2d1c73ee2452ea8be92e55d6
https://doi.org/10.3847/1538-4357/ab287e
https://doi.org/10.3847/1538-4357/ab287e
Publikováno v:
Solar Physics. 277:77-88
We discuss the consequences of momentum conservation in processes related to solar flares and coronal mass ejections (CMEs), in particular describing the relative importance of vertical impulses that could contribute to the excitation of seismic wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cca69b9d8b00c493a87027de7a76fc27
https://doi.org/10.1007/s11207-011-9836-0
https://doi.org/10.1007/s11207-011-9836-0
Publikováno v:
Solar Physics. 277:153-163
The availability of vector magnetogram sequences with sufficient accuracy and cadence to estimate the time derivative of the magnetic field allows us to use Faraday's law to find an approximate solution for the electric field in the photosphere, usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da6f32921b1e640e0eec903fe6864f18
https://doi.org/10.1007/s11207-011-9816-4
https://doi.org/10.1007/s11207-011-9816-4
Publikováno v:
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2010, ⟨10.1088/0004-637X/724/2/1542⟩
The Astrophysical journal letters, Bristol : IOP Publishing, 2010, ⟨10.1088/0004-637X/724/2/1542⟩
We consider the generation of electric currents in the solar chromosphere where the ionization level is typically low. We show that ambient electrons become magnetized even for weak magnetic fields (30 G); that is, their gyrofrequency becomes larger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4a17d4360dd2dba7323ead51c5c77b4
https://doi.org/10.1088/0004-637x/724/2/1542
https://doi.org/10.1088/0004-637x/724/2/1542
Publikováno v:
The Astrophysical Journal. 677:751-768
The minimum energy fit (MEF), a velocity inversion technique, infers all components of the photospheric velocity that are consistent with the induction equation. From the set of consistent velocity fields, it selects the smallest overall flow speed b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8061eb1a9e5be8087b35c690af1741cc
https://doi.org/10.1086/528363
https://doi.org/10.1086/528363
Autor:
Peter W. Schuck, Dana Longcope, Brian T. Welsch, William P. Abbett, Manolis K. Georgoulis, George H. Fisher, Marc L. DeRosa, B. Ravindra, Kanya Kusano
Publikováno v:
The Astrophysical Journal. 670:1434-1452
Recently, several methods that measure the velocity of magnetized plasma from time series of photospheric vector magnetograms have been developed. Velocity fields derived using such techniques can be used both to determine the fluxes of magnetic ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfc8d1879b869f6083e50f92902110ec
https://doi.org/10.1086/522422
https://doi.org/10.1086/522422
Autor:
William P. Abbett
Publikováno v:
The Astrophysical Journal. 665:1469-1488
To understand the dynamic, magnetic, and energetic connection between the convectively unstable layers below the visible surface of the Sun and the overlying solar corona, we have developed a new three-dimensional magnetohydrodynamic code capable of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9668b68620a202366b1be5aa92fb157
https://doi.org/10.1086/519788
https://doi.org/10.1086/519788
Autor:
Y. Liu, Benjamin J. Lynch, Mark C. M. Cheung, Maria D. Kazachenko, Aimee A. Norton, Brian T. Welsch, Marc L. DeRosa, Keiji Hayashi, George H. Fisher, A. Sainz Dalda, Xudong Sun, William P. Abbett, D. J. Bercik, J. T. Hoeksema
The most violent space weather events (eruptive solar flares and coronal mass ejections) are driven by the release of free magnetic energy stored in the solar corona. Energy can build up on timescales of hours to days, and then may be suddenly releas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1afec9ce5ca613b6960e993e9b660731
