| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZGivnK2Y/NhGEv |
| Repositório | sid.inpe.br/mtc-m17@80/2006/11.27.18.19 |
| Última Atualização | 2020:10.07.15.11.29 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/mtc-m17@80/2006/11.27.18.19.45 |
| Última Atualização dos Metadados | 2020:10.07.15.11.29 (UTC) marciana |
| Chave Secundária | INPE--PRE/ |
| Rótulo | self-archiving-INPE-MCTIC-GOV-BR |
| Chave de Citação | SelhorstCostSilv:2006:StMaFi |
| Título | Study of magnetic fields in solar active regions from radio observations  |
| Ano | 2006 |
| Data de Acesso | 30 jun. 2024 |
| Tipo Secundário | PRE CN |
| Número de Arquivos | 1 |
| Tamanho | 68 KiB |
| 2. Contextualização | |
| Autor | 1 Selhorst, Caius Lucius 2 Costa, Joaquim Eduardo Rezende 3 Silva, Adriana Válio Roque |
| Grupo | 1 DAS-INPE-MCT-BR 2 DAS-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 CRAAM/ Mackenzie |
| Nome do Evento | Reunião Anual da Sociedade Astronômica Brasileira, 32. |
| Localização do Evento | Atibaia, SP |
| Data | 30 jul - 03 ago |
| Título do Livro | Anais |
| Organização | Sociedade Astronômica Brasileira |
| Histórico (UTC) | 2006-11-27 18:19:45 :: simone -> administrator :: 2012-10-22 20:57:41 :: administrator -> simone :: 2013-02-20 15:19:50 :: simone -> administrator :: 2006 2018-06-05 03:44:03 :: administrator -> marciana :: 2006 |
| 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 |
| Resumo | In this work we present the results of our 3-D atmospheric model over solar active regions. Active regions are sites of increased magnetic fields in the solar atmosphere. Our model considers the temperature and densities (electrons and ions) distributions with height, as well the local magnetic 3-D structure. To obtain the positions and intensities of magnetic field lines in the solar atmosphere, we made force-free extrapolations of the magnetic field from the intensities measured in the MDI (SOHO) magnetograms, which present the mean photospheric magnetic field intensity with a resolution of about 2 arcsec. This procedure resulted in three data cubes with magnetic field intensities, one for each vector component. Magnetic loops are simulated by filling the region around each magnetic field line with densities and temperature values distinct from those of the quiet solar atmosphere. Thus, the atmospheric region is formed by the presence of flux tubes. For each column of the cube representing the atmosphere, the equations of radiative transport were solved considering bremsstrahlung and gyro-resonance emission at 17 GHz. This procedure yields 2-D matrices of brightness temperature, that were compared with the observational results at 17 GHz taken by the Nobeyama Radioheliograph (NoRH). The results showed that in faint non-polarized active regions (TB=5´104K), the gyro-resonance emission is negligible compared to the bremsstrahlung contribution, that is independent of magnetic field intensities. On the other hand, for a polarized active region with brightness temperature TB=4´105K, the gyro-resonance became very important for the total 17 GHz emission. Nevertheless, our model showed that the gyro-resonance emission calculated from the magnetic field extrapolation obtained from the MDI magnetograms is totally absorbed by solar atmosphere. To overcome this problem we solved the transfer equations with magnetic field concentrations similar to other results present in the literature. Here, we set the fine structures of flux tubes with magnetic field intensities about twice the values showed in the magnetograms. |
| Área | CEA |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > Study of magnetic... |
| 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 | |
| URL dos dados | http://urlib.net/ibi/6qtX3pFwXQZGivnK2Y/NhGEv |
| URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZGivnK2Y/NhGEv |
| Idioma | pt |
| Arquivo Alvo | selhorst_study.pdf |
| Grupo de Usuários | administrator simone administrator |
| Visibilidade | shown |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ETR8EH |
| Acervo Hospedeiro | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format isbn issn keywords lineage mark mirrorrepository nextedition notes numberofvolumes orcid pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |