Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Nicholas H. Brummell"'
Autor:
Yang Liu, Rudolf Komm, Nicholas H. Brummell, J. Todd Hoeksema, Bhishek Manek, Gherardo Valori
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 1 (2024)
Using Helioseismic and Magnetic Imager/Solar Dynamics Observatory data, we search for a relationship between kinetic helicity and magnetic helicity in solar active regions (ARs) using a sample of 62 ARs from 2010 May to 2015 May. The sample includes
Externí odkaz:
https://doaj.org/article/cff3a575f295439e9cb652cb85abcf84
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 189 (2024)
We recently presented the first 3D numerical simulation of the solar interior for which tachocline confinement was achieved by a dynamo-generated magnetic field. In this follow-up study, we analyze the degree of confinement as the magnetic field stre
Externí odkaz:
https://doaj.org/article/f449e3acaa514fd6b5c3d1809a44aeed
Publikováno v:
EAS Publications Series. 82:373-382
In this paper, we investigate the dynamics of convection in a spherical shell under the Boussinesq approximation but considering the compressibility which arises from a non zero adiabatic temperature gradient, a relevant quantity for gaseous objects
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4301f606e5f8c4ddcff2acf99c9d13e2
https://doi.org/10.1051/eas/1982033
https://doi.org/10.1051/eas/1982033
Publikováno v:
Astrophysics and Space Science Proceedings ISBN: 9783030553357
Large-scale solar surface magnetic fields are believed to emerge from the deep solar interior due to magnetic buoyancy and are observed as sunspots, embedded in active regions. The geometry and bi-polar nature of the pairwise emergence of sunspots ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7518e2e9852ede1550a0cf2d87a3b0a3
https://doi.org/10.1007/978-3-030-55336-4_18
https://doi.org/10.1007/978-3-030-55336-4_18
Autor:
Nicholas H. Brummell
Publikováno v:
Astrophysics and Space Science Proceedings ISBN: 9783030553357
Confining the primordial dipole magnetic field below the convection zone affords the possibility of a serendipitous solution that fits many of the observed qualities of the solar interior rotation profile. Gough and McIntyre [6] pointed this out and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1820c83d37c8fa96cdc78d690b6bcc38
https://doi.org/10.1007/978-3-030-55336-4_31
https://doi.org/10.1007/978-3-030-55336-4_31
Publikováno v:
Astrophysics and Space Science Proceedings ISBN: 9783030553357
Through direct numerical simulations, we study the influence of turbulence on a novel essentially nonlinear dynamo (END) mechanism. This dynamo operates through the interaction of a velocity shear with magnetic buoyancy mitigated by secondary Kelvin-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38209f472b93db3b4ec0b0cecca80d63
https://doi.org/10.1007/978-3-030-55336-4_28
https://doi.org/10.1007/978-3-030-55336-4_28
Publikováno v:
Monthly Notices of the Royal Astronomical Society, vol 503, iss 1
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol 503, iss 1
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol 503, iss 1
Motivated by the dynamics in the deep interiors of many stars, we study the interaction between overshooting convection and the large-scale poloidal fields residing in radiative zones. We have run a suite of 3D Boussinesq numerical calculations in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06345da18dc7aaee61873d2f7b68c41d
Publikováno v:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol 484, iss 1
Monthly Notices of the Royal Astronomical Society, vol 484, iss 1
Korre, Lydia; Garaud, Pascale; & Brummell, Nicholas. (2019). Convective overshooting and penetration in a Boussinesq spherical shell. Monthly Notices of the Royal Astronomical Society, 484(1), 1220-1237. doi: 10.1093/mnras/stz047. UC Santa Cruz: Retrieved from: http://www.escholarship.org/uc/item/9xd2x265
Monthly Notices of the Royal Astronomical Society, vol 484, iss 1
Korre, Lydia; Garaud, Pascale; & Brummell, Nicholas. (2019). Convective overshooting and penetration in a Boussinesq spherical shell. Monthly Notices of the Royal Astronomical Society, 484(1), 1220-1237. doi: 10.1093/mnras/stz047. UC Santa Cruz: Retrieved from: http://www.escholarship.org/uc/item/9xd2x265
Author(s): Korre, L; Garaud, P; Brummell, NH | Abstract: We study the dynamics associated with the extension of turbulent convective motions from a convection zone (CZ) into a stable region (RZ) that lies below the latter. For that purpose, we have r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::563fa79252fac9a69593f9737b64cd31
https://escholarship.org/uc/item/9xd2x265
https://escholarship.org/uc/item/9xd2x265
Autor:
Nicholas H. Brummell, Bhishek Manek
Publikováno v:
The Astrophysical Journal. 909:72
Solar active regions and sunspots are believed to be formed by the emergence of strong toroidal magnetic flux from the solar interior. Modeling of such events has focused on the dynamics of compact magnetic entities, colloquially known as "flux tubes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb331768104e7dd8a1fab1d0e341d910
https://doi.org/10.3847/1538-4357/abd859
https://doi.org/10.3847/1538-4357/abd859
Autor:
Toby S. Wood, Nicholas H. Brummell
Publikováno v:
Wood, TS; & Brummell, NH. (2018). A Self-consistent Model of the Solar Tachocline. ASTROPHYSICAL JOURNAL, 853(2), 97-97. doi: 10.3847/1538-4357/aaa6d5. UC Santa Cruz: Retrieved from: http://www.escholarship.org/uc/item/4c467276
The Astrophysical Journal, vol 853, iss 2
ASTROPHYSICAL JOURNAL, vol 853, iss 2
The Astrophysical Journal, vol 853, iss 2
ASTROPHYSICAL JOURNAL, vol 853, iss 2
We present a local but fully nonlinear model of the solar tachocline, using three-dimensional direct numerical simulations. The tachocline forms naturally as a statistically steady balance between Coriolis, pressure, buoyancy and Lorentz forces benea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff0b458be76f3cd5afd7b7f975c6eda7
http://www.escholarship.org/uc/item/4c467276
http://www.escholarship.org/uc/item/4c467276