1. Identificação | |
Tipo de Referência | Artigo em Evento (Conference Proceedings) |
Site | mtc-m21c.sid.inpe.br |
Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identificador | 8JMKD3MGP3W34R/44D4P5P |
Repositório | sid.inpe.br/mtc-m21c/2021/03.25.12.17 |
Repositório de Metadados | sid.inpe.br/mtc-m21c/2021/03.25.12.17.20 |
Última Atualização dos Metadados | 2022:04.03.19.25.09 (UTC) administrator |
Chave Secundária | INPE--PRE/ |
Chave de Citação | SantosStecCastDAmi:2021:StChSp |
Título | Study and characterization of the spectral states of 1E 1740.7-2942 in hard X-rays |
Ano | 2021 |
Data de Acesso | 11 maio 2024 |
Tipo Secundário | PRE CN |
|
2. Contextualização | |
Autor | 1 Santos, Jurandi Leão 2 Stecchini, Paulo Eduardo Freires 3 Castro, M. 4 D'Amico, Flávio |
Grupo | 1 GESAST-CEA-DIPGR-INPE-MCTI-GOV-BR 2 AST-CEA-DIPGR-INPE-MCTI-GOV-BR 3 4 DIAST-CGCE-INPE-MCTI-GOV-BR |
Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Universidade Estadual de Campinas (UNICAMP) 4 Instituto Nacional de Pesquisas Espaciais (INPE) |
Endereço de e-Mail do Autor | 1 2 du.stecchini@gmail.com 3 4 flavio.damico@inpe.br |
Nome do Evento | Simpósio Brasileiro de Geofísica Espacial e Aeronomia, 8 (SBGEA) |
Localização do Evento | Online |
Data | 22-26 mar. |
Histórico (UTC) | 2021-03-25 12:17:20 :: simone -> administrator :: 2022-04-03 19:25:09 :: administrator -> simone :: 2021 |
|
3. Conteúdo e estrutura | |
É a matriz ou uma cópia? | é a matriz |
Estágio do Conteúdo | concluido |
Transferível | 1 |
Tipo do Conteúdo | External Contribution |
Resumo | The source 1E 1740.7-2942 (1E), located near the Galactic Center, is an Xray binary whose compact object is classified as a black hole candidate due to its spectral similarities to Cygnus X-1. The hard X-ray spectra of 1E (20 < E < 200keV ) can be understood by the sombrero model, in which thermal photons from the accretion disk are comptonized in a hot electron corona. In this model, the X-ray spectra are well adjusted by a power-law, whose index, Gamma, is used to characterize the sources spectral state. Values in the literature for this index, however, are quoted over a wide range (e.g., between 1.2 and 2.5). In this work, we analyzed the public database of 1E from ISGRI telescope on-board the INTEGRAL satellite. Data were reduced to obtain spectra in the 20-200 keV range, as well as light curves in six different bands. We use the XSPEC environment to perform spectral analysis. Both these tasks (reduction and spectral analysis) were automated. The data allowed us to verify that 1E is mostly in the hard (canonical) state and is one of the most brilliant sources in the region where it is observed, corroborating previous results. We present a Gamma indexes distribution, which allow us to distinguish four spectral states for 1E in hard X-rays. In addition, it was possible to recover the degeneracy between kT and tau and, also, the correlation between the parameters E cut and kT. Another fundamental result was to conclude that, in 1E, the hot electron corona is most likely static and, therefore, the spectral states of the source are the consequence of the truncation of the disk radius, as canonically described by the sombrero model. |
Área | CEA |
Arranjo 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > AST > Study and characterization... |
Arranjo 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > Study and characterization... |
Arranjo 3 | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Study and characterization... |
Conteúdo da Pasta doc | não têm arquivos |
Conteúdo da Pasta source | não têm arquivos |
Conteúdo da Pasta agreement | |
|
4. Condições de acesso e uso | |
Idioma | en |
Grupo de Usuários | simone |
Visibilidade | shown |
Permissão de Atualização | não transferida |
|
5. Fontes relacionadas | |
Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F2NE4L 8JMKD3MGPCW/3F2PBEE 8JMKD3MGPCW/46KTFK8 |
Acervo Hospedeiro | urlib.net/www/2017/11.22.19.04 |
|
6. Notas | |
Campos Vazios | archivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark tertiarytype type url versiontype volume |
|
7. Controle da descrição | |
e-Mail (login) | simone |
atualizar | |
|