Revealing the non-linear behaviour of the lensed quasar Q0957+561

Detalhes bibliográficos
Autor(a) principal: Martins, Bruno Leonardo Canto
Data de Publicação: 2019
Outros Autores: Belete, A. Bewketu, Leão, I. C., Medeiros, J. R. de
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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spelling 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)
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