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The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14

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The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14. / Blomqvist, Michael; Pieri, Matthew M.; Du Mas Des Bourboux, Hélion; G. Busca, Nicolás; Slosar, Anže; Bautista, Julian E.; Brinkmann, Jonathan; Brownstein, Joel R.; Dawson, Kyle; Agathe, Victoria De Sainte; Guy, Julien; Percival, Will J.; Pérez-ràfols, Ignasi; Rich, James; Schneider, Donald P.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2018, No. 05, 029, 08.05.2018.

Research output: Contribution to journalArticle

Harvard

Blomqvist, M, Pieri, MM, Du Mas Des Bourboux, H, G. Busca, N, Slosar, A, Bautista, JE, Brinkmann, J, Brownstein, JR, Dawson, K, Agathe, VDS, Guy, J, Percival, WJ, Pérez-ràfols, I, Rich, J & Schneider, DP 2018, 'The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14', Journal of Cosmology and Astroparticle Physics, vol. 2018, no. 05, 029. https://doi.org/10.1088/1475-7516/2018/05/029

APA

Blomqvist, M., Pieri, M. M., Du Mas Des Bourboux, H., G. Busca, N., Slosar, A., Bautista, J. E., Brinkmann, J., Brownstein, J. R., Dawson, K., Agathe, V. D. S., Guy, J., Percival, W. J., Pérez-ràfols, I., Rich, J., & Schneider, D. P. (2018). The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14. Journal of Cosmology and Astroparticle Physics, 2018(05), [029]. https://doi.org/10.1088/1475-7516/2018/05/029

Vancouver

Blomqvist M, Pieri MM, Du Mas Des Bourboux H, G. Busca N, Slosar A, Bautista JE et al. The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14. Journal of Cosmology and Astroparticle Physics. 2018 May 8;2018(05). 029. https://doi.org/10.1088/1475-7516/2018/05/029

Author

Blomqvist, Michael ; Pieri, Matthew M. ; Du Mas Des Bourboux, Hélion ; G. Busca, Nicolás ; Slosar, Anže ; Bautista, Julian E. ; Brinkmann, Jonathan ; Brownstein, Joel R. ; Dawson, Kyle ; Agathe, Victoria De Sainte ; Guy, Julien ; Percival, Will J. ; Pérez-ràfols, Ignasi ; Rich, James ; Schneider, Donald P. / The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14. In: Journal of Cosmology and Astroparticle Physics. 2018 ; Vol. 2018, No. 05.

Bibtex

@article{1cefe78add684966a7db0a9514f9dd0f,
title = "The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14",
abstract = "We present measurements of the cross-correlation of the triply-ionized carbon (CIV) forest with quasars using Sloan Digital Sky Survey Data Release 14. The study exploits a large sample of new quasars from the first two years of observations by the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). The CIV forest is a weaker tracer of large-scale structure than the Lyα forest, but benefits from being accessible at redshifts z<2 where the quasar number density from eBOSS is high. Our data sample consists of 287,651 CIV forest quasars in the redshift range 1.4<z<3.5 and 387,315 tracer quasars with 1.2<z<3.5. We measure large-scale correlations from CIV absorption occuring in three distinct quasar rest-frame wavelength bands of the spectra referred to as the CIV forest, the SiIV forest and the Lyα forest. From the combined fit to the quasar-CIV cross-correlations for the CIV forest and the SiIV forest, the CIV redshift-space distortion parameter is βCIV=0.27 −0.14 −0.26 +0.16 +0.34 and its combination with the CIV linear transmission bias parameter is bCIV(1+βCIV)=−0.0183 −0.0014 −0.0029 +0.0013 +0.0025 (1σ and 2σ statistical errors) at the mean redshift z=2.00. Splitting the sample at z=2.2 to constrain the bias evolution with redshift yields the power-law exponent γ=0.60±0.63, indicating a significantly weaker redshift-evolution than for the Lyα forest linear transmission bias. Additionally, we demonstrate that CIV absorption has the potential to be used as a probe of baryon acoustic oscillations (BAO). While the current data set is insufficient for a detection of the BAO peak feature, the final quasar samples for redshifts 1.4<z<2.2 from eBOSS and the Dark Energy Spectroscopic Instrument (DESI) are expected to provide measurements of the isotropic BAO scale to ~7% and ~3% precision, respectively, at zsime1.6.",
author = "Michael Blomqvist and Pieri, {Matthew M.} and {Du Mas Des Bourboux}, H{\'e}lion and {G. Busca}, Nicol{\'a}s and An{\v z}e Slosar and Bautista, {Julian E.} and Jonathan Brinkmann and Brownstein, {Joel R.} and Kyle Dawson and Agathe, {Victoria De Sainte} and Julien Guy and Percival, {Will J.} and Ignasi P{\'e}rez-r{\`a}fols and James Rich and Schneider, {Donald P.}",
year = "2018",
month = may
day = "8",
doi = "10.1088/1475-7516/2018/05/029",
language = "English",
volume = "2018",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "05",

}

RIS

TY - JOUR

T1 - The triply-ionized carbon forest from eBOSS: cosmological correlations with quasars in SDSS-IV DR14

AU - Blomqvist, Michael

AU - Pieri, Matthew M.

AU - Du Mas Des Bourboux, Hélion

AU - G. Busca, Nicolás

AU - Slosar, Anže

AU - Bautista, Julian E.

AU - Brinkmann, Jonathan

AU - Brownstein, Joel R.

AU - Dawson, Kyle

AU - Agathe, Victoria De Sainte

AU - Guy, Julien

AU - Percival, Will J.

AU - Pérez-ràfols, Ignasi

AU - Rich, James

AU - Schneider, Donald P.

PY - 2018/5/8

Y1 - 2018/5/8

N2 - We present measurements of the cross-correlation of the triply-ionized carbon (CIV) forest with quasars using Sloan Digital Sky Survey Data Release 14. The study exploits a large sample of new quasars from the first two years of observations by the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). The CIV forest is a weaker tracer of large-scale structure than the Lyα forest, but benefits from being accessible at redshifts z<2 where the quasar number density from eBOSS is high. Our data sample consists of 287,651 CIV forest quasars in the redshift range 1.4<z<3.5 and 387,315 tracer quasars with 1.2<z<3.5. We measure large-scale correlations from CIV absorption occuring in three distinct quasar rest-frame wavelength bands of the spectra referred to as the CIV forest, the SiIV forest and the Lyα forest. From the combined fit to the quasar-CIV cross-correlations for the CIV forest and the SiIV forest, the CIV redshift-space distortion parameter is βCIV=0.27 −0.14 −0.26 +0.16 +0.34 and its combination with the CIV linear transmission bias parameter is bCIV(1+βCIV)=−0.0183 −0.0014 −0.0029 +0.0013 +0.0025 (1σ and 2σ statistical errors) at the mean redshift z=2.00. Splitting the sample at z=2.2 to constrain the bias evolution with redshift yields the power-law exponent γ=0.60±0.63, indicating a significantly weaker redshift-evolution than for the Lyα forest linear transmission bias. Additionally, we demonstrate that CIV absorption has the potential to be used as a probe of baryon acoustic oscillations (BAO). While the current data set is insufficient for a detection of the BAO peak feature, the final quasar samples for redshifts 1.4<z<2.2 from eBOSS and the Dark Energy Spectroscopic Instrument (DESI) are expected to provide measurements of the isotropic BAO scale to ~7% and ~3% precision, respectively, at zsime1.6.

AB - We present measurements of the cross-correlation of the triply-ionized carbon (CIV) forest with quasars using Sloan Digital Sky Survey Data Release 14. The study exploits a large sample of new quasars from the first two years of observations by the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). The CIV forest is a weaker tracer of large-scale structure than the Lyα forest, but benefits from being accessible at redshifts z<2 where the quasar number density from eBOSS is high. Our data sample consists of 287,651 CIV forest quasars in the redshift range 1.4<z<3.5 and 387,315 tracer quasars with 1.2<z<3.5. We measure large-scale correlations from CIV absorption occuring in three distinct quasar rest-frame wavelength bands of the spectra referred to as the CIV forest, the SiIV forest and the Lyα forest. From the combined fit to the quasar-CIV cross-correlations for the CIV forest and the SiIV forest, the CIV redshift-space distortion parameter is βCIV=0.27 −0.14 −0.26 +0.16 +0.34 and its combination with the CIV linear transmission bias parameter is bCIV(1+βCIV)=−0.0183 −0.0014 −0.0029 +0.0013 +0.0025 (1σ and 2σ statistical errors) at the mean redshift z=2.00. Splitting the sample at z=2.2 to constrain the bias evolution with redshift yields the power-law exponent γ=0.60±0.63, indicating a significantly weaker redshift-evolution than for the Lyα forest linear transmission bias. Additionally, we demonstrate that CIV absorption has the potential to be used as a probe of baryon acoustic oscillations (BAO). While the current data set is insufficient for a detection of the BAO peak feature, the final quasar samples for redshifts 1.4<z<2.2 from eBOSS and the Dark Energy Spectroscopic Instrument (DESI) are expected to provide measurements of the isotropic BAO scale to ~7% and ~3% precision, respectively, at zsime1.6.

U2 - 10.1088/1475-7516/2018/05/029

DO - 10.1088/1475-7516/2018/05/029

M3 - Article

VL - 2018

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 05

M1 - 029

ER -

ID: 10660966