| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | plutao.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | J8LNKAN8RW/34BERCH |
| Repositório | dpi.inpe.br/plutao@80/2008/12.04.12.22 (acesso restrito) |
| Última Atualização | 2015:04.16.17.11.16 (UTC) administrator |
| Repositório de Metadados | dpi.inpe.br/plutao@80/2008/12.04.12.22.19 |
| Última Atualização dos Metadados | 2021:07.28.23.02.31 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| DOI | 10.1051/0004-6361:200809975 |
| Rótulo | lattes: 6460301165792800 4 SantosBüchMadjAlve:2008:CaSt |
| Chave de Citação | SantosBüchMadjAlve:2008:CaSt |
| Título | On the relation between DC current locations and an EUV bright point: A case study  |
| Ano | 2008 |
| Data de Acesso | 06 maio 2024 |
| Tipo de Trabalho | journal article |
| Número de Arquivos | 1 |
| Tamanho | 2978 KiB |
| 2. Contextualização | |
| Autor | 1 Santos, J. C. 2 Büchner, J. 3 Madjarska, M. S. 4 Alves, Maria Virginia |
| Grupo | 1 2 3 4 LAP-CTE-INPE-MCT-BR |
| Afiliação | 1 Max-Planck-Institut für Sonnensystemforschung 2 Max-Planck-Institut für Sonnensystemforschung 3 Max-Planck-Institut für Sonnensystemforschung 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Endereço de e-Mail do Autor | 1 santos@mps.mpg.de 2 3 4 virginia@plasma.inpe.br |
| Endereço de e-Mail | virginia@plasma.inpe.br |
| Revista | Astronomy & Astrophysics |
| Volume | 490 |
| Páginas | 345-352 |
| Histórico (UTC) | 2008-12-04 16:12:41 :: lattes -> simone :: 2008-12-18 10:56:55 :: simone -> administrator :: 2010-05-12 02:52:02 :: administrator -> banon :: 2010-05-12 14:28:15 :: banon -> simone :: 2010-07-07 18:38:52 :: simone -> administrator :: 2021-07-28 23:02:31 :: administrator -> marciana :: 2008 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | Sun: atmosphere – Sun: magnetic fields – Sun: activity – magnetohydrodynamics (MHD) – methods: numerical |
| Resumo | Context. Motion of the photospheric plasma forces the footpoints of magnetic flux tubes to move. This can give rise to electric currents in the solar atmosphere. The dissipation of these electric currents and the consequent heating of the solar plasma may be responsible for the formation of Extreme-UltraViolet (EUV) and X-ray bright points. Earlier bright point models usually consider either the emergence or the canceling of photospheric magnetic features as being responsible for reconnection causing the bright point. Aims. We investigate the consequences of different patterns of horizontal photospheric plasma motion for the generation of electric currents in the solar atmosphere and locate them with respect to an observed EUV bright point. The goal is to find out whether these currents might be responsible for the heating of bright points. Methods. To perform this study we use a data driven three dimensional magnetohydrodynamic model. The model solves an appropriate set of magnetohydrodynamic equations and uses, as initial condition, the magnetic field extrapolated from the line-of-sight component of the photospheric magnetic field observed by MDI/SoHO and the height-stratified, equilibrium density and temperature of the solar corona. We apply different patterns of horizontal photospheric plasma motion, derived from the temporal evolution of the photospheric magnetic structures in the course of the bright point lifetime, as boundary conditions of the model. Results. All applied patterns of horizontal photospheric plasma motion (shearing, convergence and fragmentation) lead to the formation of electric currents in the chromosphere, transition region and corona. Currents do not develop everywhere in the region where the motion is applied but in specific places where the magnetic field connectivity changes significantly. An important result is that the position where the electric currents develop is independent of the motion pattern used as boundary condition of the model. A comparison with data obtained by TRACE in the 1550 Å channel and by the EIT in the 195 Å channel shows that the region where the strongest current concentrations are formed coincides with the region where the EUV bright point appears. |
| Área | FISPLASMA |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAP > On the relation... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Grupo de Usuários | administrator banon lattes marciana simone |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Política de Arquivamento | denypublisher denyfinaldraft12 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ET2RFS |
| Lista de Itens Citando | sid.inpe.br/bibdigital/2013/09.25.21.49 1 |
| Divulgação | WEBSCI; PORTALCAPES; SCIELO. |
| Acervo Hospedeiro | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notas | |
| Campos Vazios | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn issn lineage mark mirrorrepository month nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarymark secondarytype session shorttitle sponsor subject targetfile tertiarymark tertiarytype url |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |