| dc.contributor.author | Goicoechea Santamaría, Luis Julián | |
| dc.contributor.author | Shalyapin, Vyacheslav | |
| dc.contributor.other | Universidad de Cantabria | es_ES |
| dc.date.accessioned | 2025-12-12T12:40:11Z | |
| dc.date.available | 2025-12-12T12:40:11Z | |
| dc.date.issued | 2025-09 | |
| dc.identifier.issn | 0004-6361 | |
| dc.identifier.issn | 1432-0746 | |
| dc.identifier.other | PID2020-118990GB-I00 | es_ES |
| dc.identifier.uri | https://hdl.handle.net/10902/38513 | |
| dc.description.abstract | We conducted long-term monitoring of the doubly imaged gravitationally lensed quasar SDSS J1001+5027 consisting of spectro-photometric observations separated by -120 days (time delay between both quasar images), as well as test and auxiliary data. This monitoring approach allowed us to reliably find a strong microlensing-induced chromatic variation of the quasar continuum in the period 2022-2025. The ongoing microlensing event has caused the delay-corrected spectral flux ratio in 2025 to have a dramatic changing look, opening the door to very promising observations of the system in the coming years. These future follow-up observations of such a rare event are expected to provide critical information to discuss, among other things, the structure of the inner accretion flow towards the central supermassive black hole in SDSS J1001+5027. | es_ES |
| dc.description.sponsorship | We thank the referee for drawing our attention to several details. We also thank the staff of the Liverpool Telescope (LT) for a kind interaction. The LT is operated on the island of La Palma by Liverpool John Moores
University in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias with financial support from the UK Science and Technology Facilities Council. This long-term research has been supported by the University of Cantabria and several research grants, including the grant PID2020-118990GB-I00 funded by MCIN/AEI/10.13039/501100011033. | es_ES |
| dc.format.extent | 6 p. | es_ES |
| dc.language.iso | eng | es_ES |
| dc.publisher | EDP Sciences | es_ES |
| dc.rights | © The Authors 2025. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | es_ES |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
| dc.source | Astronomy and Astrophysics, 2025, 701, L13 | es_ES |
| dc.subject.other | Gravitational Lensing: Strong | es_ES |
| dc.subject.other | Gravitational Lensing: Micro | es_ES |
| dc.subject.other | Quasars: General | es_ES |
| dc.subject.other | Quasars: Individual | es_ES |
| dc.subject.other | SDSS J1001+5027 | es_ES |
| dc.title | SDSS J1001+5027: strong microlensing-induced chromatic variation caught in the act | es_ES |
| dc.type | info:eu-repo/semantics/article | es_ES |
| dc.relation.publisherVersion | https://doi.org/10.1051/0004-6361/202556521 | es_ES |
| dc.rights.accessRights | openAccess | es_ES |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118990GB-I00/ES/GLENDAMA: DESCUBRIMIENTOS, OBSERVACIONES Y ESTUDIOS DE SISTEMAS LENTE GRAVITATORIA/ | |
| dc.identifier.DOI | 10.1051/0004-6361/202556521 | |
| dc.type.version | publishedVersion | es_ES |
Excepto si se señala otra cosa, la licencia del ítem se describe como © The Authors 2025. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
