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Time Delay of Mg II Emission Response for the Luminous Quasar HE 0435-4312: toward Application of the High-accretor Radius-Luminosity Relation in Cosmology

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dc.abstract.enUsing six years of spectroscopic monitoring of the luminous quasar HE 0435-4312 (z = 1.2231) with the Southern African Large Telescope, in combination with photometric data (CATALINA, OGLE, SALTICAM, and BMT), we determined a rest-frame time delay of ${296}_{-14}^{+13}$ days between the Mg II broad-line emission and the ionizing continuum using seven different time-delay inference methods. Time-delay artifact peaks and aliases were mitigated using the bootstrap method and prior weighting probability function, as well as by analyzing unevenly sampled mock light curves. The Mg II emission is considerably variable with a fractional variability of ∼5.4%, which is comparable to the continuum variability (∼4.8%). Because of its high luminosity (L<SUB>3000</SUB> = 10<SUP>46.4</SUP> erg s<SUP>-1</SUP>), the source is beneficial for a further reduction of the scatter along the Mg II-based radius-luminosity relation and its extended versions, especially when the highly accreting subsample that has an rms scatter of ∼0.2 dex is considered. This opens up the possibility of using the high-accretor Mg II-based radius-luminosity relation for constraining cosmological parameters. With the current sample of 27 reverberation-mapped sources, the best-fit cosmological parameters (Ω<SUB>m</SUB>, Ω<SUB>Λ</SUB>) = (0.19; 0.62) are consistent with the standard cosmological model within the 1σ confidence level.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorZajaček, Michal
dc.contributor.authorCzerny, Bożena
dc.contributor.authorMartinez-Aldama, Mary Loli
dc.contributor.authorRałowski, Mateusz
dc.contributor.authorOlejak, Aleksandra
dc.contributor.authorPrzyłuski, Robert
dc.contributor.authorPanda, Swayamtrupta
dc.contributor.authorHryniewicz, Krzysztof
dc.contributor.authorŚniegowska, Marzena
dc.contributor.authorNaddaf, Mohammad-Hassan
dc.contributor.authorPrince, Raj
dc.contributor.authorPych, Wojtek
dc.contributor.authorPietrzyński, Grzegorz
dc.contributor.authorFigaredo, Catalina Sobrino
dc.contributor.authorHaas, Martin
dc.contributor.authorŚredzińska, Justyna
dc.contributor.authorKrupa, Magdalena
dc.contributor.authorKurcz, Agnieszka
dc.contributor.authorUdalski, Andrzej
dc.contributor.authorKaras, Vladimír
dc.contributor.authorSarna, Marek
dc.contributor.authorWorters, Hannah L.
dc.contributor.authorSefako, Ramotholo R.
dc.contributor.authorGenade, Anja
dc.date.accessioned2024-01-26T10:53:45Z
dc.date.available2024-01-26T10:53:45Z
dc.date.copyright2020-12-22
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume912
dc.identifier.doi10.3847/1538-4357/ABE9B2
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/123434
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021ApJ...912...10Z
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages10
dc.rightsOther
dc.sciencecloudnosend
dc.titleTime Delay of Mg II Emission Response for the Luminous Quasar HE 0435-4312: toward Application of the High-accretor Radius-Luminosity Relation in Cosmology
dc.typeJournalArticle
dspace.entity.typePublication