Standardizing reverberation-measured C iv time-lag quasars, and
using them with standardized Mg ii quasars to constrain
cosmological parameters

J 2022

Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters

CAO, Shulei; Michal ZAJAČEK; Swayamtrupta PANDA; Loli Martinez-Aldama MARY; Bozena CZERNY et al.

Základní údaje

Originální název

Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters

Autoři

CAO, Shulei; Michal ZAJAČEK; Swayamtrupta PANDA; Loli Martinez-Aldama MARY; Bozena CZERNY a Bharat RATRA

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2022, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL, URL

Impakt faktor

Impact factor: 4.800

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/22:00129256

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

quasars: emission lines; cosmological parameters; cosmology: observations; dark energy

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 7. 2023 09:57, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We use 38 C IV quasar (QSO) reverberation-mapped observations, which span eight orders of magnitude in luminosity and the redshift range 0.001064 ≤ z ≤ 3.368, to simultaneously constrain cosmological-model and QSO radius–luminosity (R–L) relation parameters in six cosmological models, using an improved technique that more correctly accounts for the asymmetric errors bars of the time-lag measurements. We find that R–L relation parameters are independent of the cosmological models used in the analysis and so the R–L relation can be used to standardize the C IV QSOs. The C IV QSO cosmological constraints are consistent with those from Mg II QSOs, allowing us to derive joint C IV + Mg II QSO cosmological constraints which are consistent with currently accelerated cosmological expansion, as well as consistent with cosmological constraints derived using better-established baryon acoustic oscillation (BAO) and Hubble parameter [H(z)] measurements. When jointly analysed with H(z) + BAO data, current C IV + Mg II QSO data mildly tighten current H(z) + BAO data cosmological constraints.

Návaznosti

GX21-13491X, projekt VaV

Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)

Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback

Citovat

CAO, Shulei; Michal ZAJAČEK; Swayamtrupta PANDA; Loli Martinez-Aldama MARY; Bozena CZERNY a Bharat RATRA. Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2022, roč. 516, č. 2, s. 1721-1740. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stac2325.

@article{2239839,
   author = {Cao, Shulei and Zajaček, Michal and Panda, Swayamtrupta and Mary, Loli MartinezandAldama and Czerny, Bozena and Ratra, Bharat},
   article_number = {2},
   doi = {https://doi.org/10.1093/mnras/stac2325},
   keywords = {quasars: emission lines; cosmological parameters; cosmology: observations; dark energy},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters},
   url = {https://doi.org/10.1093/mnras/stac2325},
   volume = {516},
   year = {2022}
}

TY  - JOUR
ID  - 2239839
AU  - Cao, Shulei - Zajaček, Michal - Panda, Swayamtrupta - Mary, Loli Martinez-Aldama - Czerny, Bozena - Ratra, Bharat
PY  - 2022
TI  - Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 516
IS  - 2
SP  - 1721-1740
EP  - 1721-1740
PB  - Oxford University Press
SN  - 00358711
KW  - quasars: emission lines
KW  - cosmological parameters
KW  - cosmology: observations
KW  - dark energy
UR  - https://doi.org/10.1093/mnras/stac2325
N2  - We use 38 C IV quasar (QSO) reverberation-mapped observations, which span eight orders of magnitude in luminosity and the redshift range 0.001064 ≤ z ≤ 3.368, to simultaneously constrain cosmological-model and QSO radius–luminosity (R–L) relation parameters in six cosmological models, using an improved technique that more correctly accounts for the asymmetric errors bars of the time-lag measurements. We find that R–L relation parameters are independent of the cosmological models used in the analysis and so the R–L relation can be used to standardize the C IV QSOs. The C IV QSO cosmological constraints are consistent with those from Mg II QSOs, allowing us to derive joint C IV + Mg II QSO cosmological constraints which are consistent with currently accelerated cosmological expansion, as well as consistent with cosmological constraints derived using better-established baryon acoustic oscillation (BAO) and Hubble parameter [H(z)] measurements. When jointly analysed with H(z) + BAO data, current C IV + Mg II QSO data mildly tighten current H(z) + BAO data cosmological constraints.
ER  -

CAO, Shulei; Michal ZAJAČEK; Swayamtrupta PANDA; Loli Martinez-Aldama MARY; Bozena CZERNY a Bharat RATRA. Standardizing reverberation-measured C iv time-lag quasars, and using them with standardized Mg ii quasars to constrain cosmological parameters. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2022, roč.~516, č.~2, s.~1721-1740. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stac2325.

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