Revealing the non-linear behaviour of the lensed quasar Q0957+561
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/29454 http://dx.doi.org/10.1093/mnras/stz203 |
Resumo: | Knowledge about how the non-linear behaviour of the intrinsic signal from lensed background sources changes on its path to the observer provides much information, particularly about the matter distribution in lensing galaxies and the physical properties of the current universe, in general. Here, we analyse the multifractal behaviour of the optical observations of A and B images of Q0957+561 in the r and g bands. Aims: To verify the presence, or absence, of extrinsic variations in the observed signals of the quasar images and whether extrinsic variations affect the multifractal behaviour of their intrinsic signals. Method: We apply a wavelet transform modulus maxima-based multifractality analysis approach. Results: We detect strong multifractal signatures in the light curves of the quasar images. The degree of multifractality for both images in the r band changes over time in a non-monotonic way, indicating the presence of extrinsic variabilities in the light curves of the images. Additionally, in the r band, in periods of quiescent microlensing activity, we find that the degree of multifractality of image A is stronger than that of B, while B has a larger multifractal strength in recent epochs when it appears to be affected by microlensing. Finally, comparing the optical bands in a period of quiescent microlensing activity, we find that the degree of multifractality is stronger in the r band for both quasar images. In the absence of microlensing, the observed excesses of non-linearity are most likely generated when the broad-line region reprocesses the radiation from the compact sources. |
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Martins, Bruno Leonardo CantoBelete, A. BewketuLeão, I. C.Medeiros, J. R. de2020-07-06T18:17:01Z2020-07-06T18:17:01Z2019-01-18BELETE, A Bewketu; MARTINS, Bruno Leonardo Canto; LEÃO, I. C.; MEDEIROS, J. R. Revealing the non-linear behaviour of the lensed quasar Q0957+561. Monthly Notices Of The Royal Astronomical Society, [s.l.], v. 484, n. 3, p. 3552-3560, 18 jan. 2019. ISSN 1365-2966 versão online. Disponível em: https://academic.oup.com/mnras/article-abstract/484/3/3552/5292506?redirectedFrom=fulltext. Acesso em: 06 jul. 2020. http://dx.doi.org/10.1093/mnras/stz203.0035-8711 (print), 1365-2966 (online)https://repositorio.ufrn.br/jspui/handle/123456789/29454http://dx.doi.org/10.1093/mnras/stz203Oxford University Press (OUP)Methods: statisticalQuasar: individual: Q0957+561.Revealing the non-linear behaviour of the lensed quasar Q0957+561info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleKnowledge about how the non-linear behaviour of the intrinsic signal from lensed background sources changes on its path to the observer provides much information, particularly about the matter distribution in lensing galaxies and the physical properties of the current universe, in general. Here, we analyse the multifractal behaviour of the optical observations of A and B images of Q0957+561 in the r and g bands. Aims: To verify the presence, or absence, of extrinsic variations in the observed signals of the quasar images and whether extrinsic variations affect the multifractal behaviour of their intrinsic signals. Method: We apply a wavelet transform modulus maxima-based multifractality analysis approach. Results: We detect strong multifractal signatures in the light curves of the quasar images. The degree of multifractality for both images in the r band changes over time in a non-monotonic way, indicating the presence of extrinsic variabilities in the light curves of the images. Additionally, in the r band, in periods of quiescent microlensing activity, we find that the degree of multifractality of image A is stronger than that of B, while B has a larger multifractal strength in recent epochs when it appears to be affected by microlensing. Finally, comparing the optical bands in a period of quiescent microlensing activity, we find that the degree of multifractality is stronger in the r band for both quasar images. In the absence of microlensing, the observed excesses of non-linearity are most likely generated when the broad-line region reprocesses the radiation from the compact sources.engreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdfRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdfapplication/pdf2876363https://repositorio.ufrn.br/bitstream/123456789/29454/1/Revealing%20the%20non-linear%20behaviour%20of%20the%20lensed%20quasar%20Q0957%2b561_2019.pdf469a73b6d7aba7a13b8f65a2b783bc20MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/29454/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdf.txtRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdf.txtExtracted texttext/plain44281https://repositorio.ufrn.br/bitstream/123456789/29454/3/Revealing%20the%20non-linear%20behaviour%20of%20the%20lensed%20quasar%20Q0957%2b561_2019.pdf.txtdd24be7d39ea3f29098a15a49928c53aMD53THUMBNAILRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdf.jpgRevealing the non-linear behaviour of the lensed quasar Q0957+561_2019.pdf.jpgGenerated Thumbnailimage/jpeg1734https://repositorio.ufrn.br/bitstream/123456789/29454/4/Revealing%20the%20non-linear%20behaviour%20of%20the%20lensed%20quasar%20Q0957%2b561_2019.pdf.jpg180f634319db67b390fad435b1588f1eMD54123456789/294542020-07-12 04:47:59.639oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-07-12T07:47:59Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
title |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
spellingShingle |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 Martins, Bruno Leonardo Canto Methods: statistical Quasar: individual: Q0957+561. |
title_short |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
title_full |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
title_fullStr |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
title_full_unstemmed |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
title_sort |
Revealing the non-linear behaviour of the lensed quasar Q0957+561 |
author |
Martins, Bruno Leonardo Canto |
author_facet |
Martins, Bruno Leonardo Canto Belete, A. Bewketu Leão, I. C. Medeiros, J. R. de |
author_role |
author |
author2 |
Belete, A. Bewketu Leão, I. C. Medeiros, J. R. de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Martins, Bruno Leonardo Canto Belete, A. Bewketu Leão, I. C. Medeiros, J. R. de |
dc.subject.por.fl_str_mv |
Methods: statistical Quasar: individual: Q0957+561. |
topic |
Methods: statistical Quasar: individual: Q0957+561. |
description |
Knowledge about how the non-linear behaviour of the intrinsic signal from lensed background sources changes on its path to the observer provides much information, particularly about the matter distribution in lensing galaxies and the physical properties of the current universe, in general. Here, we analyse the multifractal behaviour of the optical observations of A and B images of Q0957+561 in the r and g bands. Aims: To verify the presence, or absence, of extrinsic variations in the observed signals of the quasar images and whether extrinsic variations affect the multifractal behaviour of their intrinsic signals. Method: We apply a wavelet transform modulus maxima-based multifractality analysis approach. Results: We detect strong multifractal signatures in the light curves of the quasar images. The degree of multifractality for both images in the r band changes over time in a non-monotonic way, indicating the presence of extrinsic variabilities in the light curves of the images. Additionally, in the r band, in periods of quiescent microlensing activity, we find that the degree of multifractality of image A is stronger than that of B, while B has a larger multifractal strength in recent epochs when it appears to be affected by microlensing. Finally, comparing the optical bands in a period of quiescent microlensing activity, we find that the degree of multifractality is stronger in the r band for both quasar images. In the absence of microlensing, the observed excesses of non-linearity are most likely generated when the broad-line region reprocesses the radiation from the compact sources. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-01-18 |
dc.date.accessioned.fl_str_mv |
2020-07-06T18:17:01Z |
dc.date.available.fl_str_mv |
2020-07-06T18:17:01Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
BELETE, A Bewketu; MARTINS, Bruno Leonardo Canto; LEÃO, I. C.; MEDEIROS, J. R. Revealing the non-linear behaviour of the lensed quasar Q0957+561. Monthly Notices Of The Royal Astronomical Society, [s.l.], v. 484, n. 3, p. 3552-3560, 18 jan. 2019. ISSN 1365-2966 versão online. Disponível em: https://academic.oup.com/mnras/article-abstract/484/3/3552/5292506?redirectedFrom=fulltext. Acesso em: 06 jul. 2020. http://dx.doi.org/10.1093/mnras/stz203. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/29454 |
dc.identifier.issn.none.fl_str_mv |
0035-8711 (print), 1365-2966 (online) |
dc.identifier.doi.none.fl_str_mv |
http://dx.doi.org/10.1093/mnras/stz203 |
identifier_str_mv |
BELETE, A Bewketu; MARTINS, Bruno Leonardo Canto; LEÃO, I. C.; MEDEIROS, J. R. Revealing the non-linear behaviour of the lensed quasar Q0957+561. Monthly Notices Of The Royal Astronomical Society, [s.l.], v. 484, n. 3, p. 3552-3560, 18 jan. 2019. ISSN 1365-2966 versão online. Disponível em: https://academic.oup.com/mnras/article-abstract/484/3/3552/5292506?redirectedFrom=fulltext. Acesso em: 06 jul. 2020. http://dx.doi.org/10.1093/mnras/stz203. 0035-8711 (print), 1365-2966 (online) |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/29454 http://dx.doi.org/10.1093/mnras/stz203 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Oxford University Press (OUP) |
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Oxford University Press (OUP) |
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reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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Universidade Federal do Rio Grande do Norte (UFRN) |
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UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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Repositório Institucional da UFRN |
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