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
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00550197" target="_blank" >RIV/67985815:_____/21:00550197 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/abe9b2" target="_blank" >https://doi.org/10.3847/1538-4357/abe9b2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/abe9b2" target="_blank" >10.3847/1538-4357/abe9b2</a>
Alternative languages
Result language
angličtina
Original language name
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
Original language description
Using 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 similar to 5.4%, which is comparable to the continuum variability (similar to 4.8%). Because of its high luminosity (L-3000 = 10(46.4) erg s(-1)), 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 similar to 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 (Omega(m), Omega(Lambda)) = (0.19, 0.62) are consistent with the standard cosmological model within the 1 sigma confidence level.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
912
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
25
Pages from-to
10
UT code for WoS article
000646369500001
EID of the result in the Scopus database
2-s2.0-85105566393