@misc{wolz2021constraints,
  abstract = {We present the joint analysis of Neutral Hydrogen (HI) Intensity Mapping
observations with three galaxy samples: the Luminous Red Galaxy (LRG) and
Emission Line Galaxy (ELG) samples from the eBOSS survey, and the WiggleZ Dark
Energy Survey sample. The HI intensity maps are Green Bank Telescope
observations of the redshifted 21cm emission on 100deg2 covering the redshift
range $0.6<z<1.0$. We process the data by separating and removing the
foregrounds with FastICA, and construct a transfer function to correct for the
effects of foreground removal on the HI signal. We cross-correlate the cleaned
HI data with the galaxy samples and study the overall amplitude as well as the
scale-dependence of the power spectrum. We also qualitatively compare our
findings with the predictions by a semi-analytic galaxy evolution simulation.
The cross-correlations constrain the quantity $\Omega_{{HI}} b_{{HI}}
r_{{HI},{opt}}$ at an effective scale $k_{eff}$, where $\Omega_{HI}$ is the HI
density fraction, $b_{HI}$ is the HI bias, and $r_{{HI},{opt}}$ the
galaxy-hydrogen correlation coefficient, which is dependent on the HI content
of the optical galaxy sample. At $k_{eff}=0.31 \, h/{Mpc}$ we find
$\Omega_{{HI}} b_{{HI}} r_{{HI},{Wig}} = [0.58 \pm 0.09 \, {(stat) \pm 0.05 \,
{(sys)}}] \times 10^{-3}$ for GBT-WiggleZ, $\Omega_{{HI}} b_{{HI}}
r_{{HI,{ELG}}} = [0.40 \pm 0.09 \, {(stat) \pm 0.04 \, {(sys)}}] \times
10^{-3}$ for GBT-ELG, and $\Omega_{{HI}} b_{{HI}} r_{{HI},{LRG}} = [0.35 \pm
0.08 \, {(stat) \pm 0.03 \, {(sys)}}] \times 10^{-3}$ for GBT-LRG, at $z\simeq
0.8$. We also report results at $k_{eff}=0.24 \, h/{Mpc}$ and $k_{eff}=0.48 \,
h/{Mpc}$. With little information on HI parameters beyond our local Universe,
these are amongst the most precise constraints on neutral hydrogen density
fluctuations in an underexplored redshift range.},
  added-at = {2021-02-10T12:13:13.000+0100},
  author = {Wolz, Laura and Pourtsidou, Alkistis and Masui, Kiyoshi W. and Chang, Tzu-Ching and Bautista, Julian E. and Mueller, Eva-Maria and Avila, Santiago and Bacon, David and Percival, Will J. and Cunnington, Steven and Anderson, Chris and Chen, Xuelei and Kneib, Jean-Paul and Li, Yi-Chao and Liao, Yu-Wei and Pen, Ue-Li and Peterson, Jeffrey B. and Rossi, Graziano and Schneider, Donald P. and Yadav, Jaswant and Zhao, Gong-Bo},
  biburl = {https://www.bibsonomy.org/bibtex/24967f64a58efbe9ded8a39471759d808/gpkulkarni},
  description = {HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps},
  interhash = {df0dd68fc303a78099aeca660dbd9f33},
  intrahash = {4967f64a58efbe9ded8a39471759d808},
  keywords = {library},
  note = {cite arxiv:2102.04946Comment: 16 pages, 15 figures, 1 table; submitted to MNRAS},
  timestamp = {2021-02-10T12:13:13.000+0100},
  title = {HI constraints from the cross-correlation of eBOSS galaxies and Green
  Bank Telescope intensity maps},
  url = {http://arxiv.org/abs/2102.04946},
  year = 2021
}

{"_id":"rtqBKw4cNzDkRFPQc","bibbaseid":"wolz-pourtsidou-masui-chang-bautista-mueller-avila-bacon-etal-hiconstraintsfromthecrosscorrelationofebossgalaxiesandgreenbanktelescopeintensitymaps-2021","author_short":["Wolz, L.","Pourtsidou, A.","Masui, K. W.","Chang, T.","Bautista, J. E.","Mueller, E.","Avila, S.","Bacon, D.","Percival, W. J.","Cunnington, S.","Anderson, C.","Chen, X.","Kneib, J.","Li, Y.","Liao, Y.","Pen, U.","Peterson, J. B.","Rossi, G.","Schneider, D. P.","Yadav, J.","Zhao, G."],"bibdata":{"bibtype":"misc","type":"misc","abstract":"We present the joint analysis of Neutral Hydrogen (HI) Intensity Mapping observations with three galaxy samples: the Luminous Red Galaxy (LRG) and Emission Line Galaxy (ELG) samples from the eBOSS survey, and the WiggleZ Dark Energy Survey sample. The HI intensity maps are Green Bank Telescope observations of the redshifted 21cm emission on 100deg2 covering the redshift range $0.6<z<1.0$. We process the data by separating and removing the foregrounds with FastICA, and construct a transfer function to correct for the effects of foreground removal on the HI signal. We cross-correlate the cleaned HI data with the galaxy samples and study the overall amplitude as well as the scale-dependence of the power spectrum. We also qualitatively compare our findings with the predictions by a semi-analytic galaxy evolution simulation. The cross-correlations constrain the quantity $Ω_{{HI}} b_{{HI}} r_{{HI},{opt}}$ at an effective scale $k_{eff}$, where $Ω_{HI}$ is the HI density fraction, $b_{HI}$ is the HI bias, and $r_{{HI},{opt}}$ the galaxy-hydrogen correlation coefficient, which is dependent on the HI content of the optical galaxy sample. At $k_{eff}=0.31 \\, h/{Mpc}$ we find $Ω_{{HI}} b_{{HI}} r_{{HI},{Wig}} = [0.58 ± 0.09 \\, {(stat) ± 0.05 \\, {(sys)}}] × 10^{-3}$ for GBT-WiggleZ, $Ω_{{HI}} b_{{HI}} r_{{HI,{ELG}}} = [0.40 ± 0.09 \\, {(stat) ± 0.04 \\, {(sys)}}] × 10^{-3}$ for GBT-ELG, and $Ω_{{HI}} b_{{HI}} r_{{HI},{LRG}} = [0.35 ± 0.08 \\, {(stat) ± 0.03 \\, {(sys)}}] × 10^{-3}$ for GBT-LRG, at $z≃ 0.8$. We also report results at $k_{eff}=0.24 \\, h/{Mpc}$ and $k_{eff}=0.48 \\, h/{Mpc}$. With little information on HI parameters beyond our local Universe, these are amongst the most precise constraints on neutral hydrogen density fluctuations in an underexplored redshift range.","added-at":"2021-02-10T12:13:13.000+0100","author":[{"propositions":[],"lastnames":["Wolz"],"firstnames":["Laura"],"suffixes":[]},{"propositions":[],"lastnames":["Pourtsidou"],"firstnames":["Alkistis"],"suffixes":[]},{"propositions":[],"lastnames":["Masui"],"firstnames":["Kiyoshi","W."],"suffixes":[]},{"propositions":[],"lastnames":["Chang"],"firstnames":["Tzu-Ching"],"suffixes":[]},{"propositions":[],"lastnames":["Bautista"],"firstnames":["Julian","E."],"suffixes":[]},{"propositions":[],"lastnames":["Mueller"],"firstnames":["Eva-Maria"],"suffixes":[]},{"propositions":[],"lastnames":["Avila"],"firstnames":["Santiago"],"suffixes":[]},{"propositions":[],"lastnames":["Bacon"],"firstnames":["David"],"suffixes":[]},{"propositions":[],"lastnames":["Percival"],"firstnames":["Will","J."],"suffixes":[]},{"propositions":[],"lastnames":["Cunnington"],"firstnames":["Steven"],"suffixes":[]},{"propositions":[],"lastnames":["Anderson"],"firstnames":["Chris"],"suffixes":[]},{"propositions":[],"lastnames":["Chen"],"firstnames":["Xuelei"],"suffixes":[]},{"propositions":[],"lastnames":["Kneib"],"firstnames":["Jean-Paul"],"suffixes":[]},{"propositions":[],"lastnames":["Li"],"firstnames":["Yi-Chao"],"suffixes":[]},{"propositions":[],"lastnames":["Liao"],"firstnames":["Yu-Wei"],"suffixes":[]},{"propositions":[],"lastnames":["Pen"],"firstnames":["Ue-Li"],"suffixes":[]},{"propositions":[],"lastnames":["Peterson"],"firstnames":["Jeffrey","B."],"suffixes":[]},{"propositions":[],"lastnames":["Rossi"],"firstnames":["Graziano"],"suffixes":[]},{"propositions":[],"lastnames":["Schneider"],"firstnames":["Donald","P."],"suffixes":[]},{"propositions":[],"lastnames":["Yadav"],"firstnames":["Jaswant"],"suffixes":[]},{"propositions":[],"lastnames":["Zhao"],"firstnames":["Gong-Bo"],"suffixes":[]}],"biburl":"https://www.bibsonomy.org/bibtex/24967f64a58efbe9ded8a39471759d808/gpkulkarni","description":"HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps","interhash":"df0dd68fc303a78099aeca660dbd9f33","intrahash":"4967f64a58efbe9ded8a39471759d808","keywords":"library","note":"cite arxiv:2102.04946Comment: 16 pages, 15 figures, 1 table; submitted to MNRAS","timestamp":"2021-02-10T12:13:13.000+0100","title":"HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps","url":"http://arxiv.org/abs/2102.04946","year":"2021","bibtex":"@misc{wolz2021constraints,\n abstract = {We present the joint analysis of Neutral Hydrogen (HI) Intensity Mapping\r\nobservations with three galaxy samples: the Luminous Red Galaxy (LRG) and\r\nEmission Line Galaxy (ELG) samples from the eBOSS survey, and the WiggleZ Dark\r\nEnergy Survey sample. The HI intensity maps are Green Bank Telescope\r\nobservations of the redshifted 21cm emission on 100deg2 covering the redshift\r\nrange $0.6<z<1.0$. We process the data by separating and removing the\r\nforegrounds with FastICA, and construct a transfer function to correct for the\r\neffects of foreground removal on the HI signal. We cross-correlate the cleaned\r\nHI data with the galaxy samples and study the overall amplitude as well as the\r\nscale-dependence of the power spectrum. We also qualitatively compare our\r\nfindings with the predictions by a semi-analytic galaxy evolution simulation.\r\nThe cross-correlations constrain the quantity $\\Omega_{{HI}} b_{{HI}}\r\nr_{{HI},{opt}}$ at an effective scale $k_{eff}$, where $\\Omega_{HI}$ is the HI\r\ndensity fraction, $b_{HI}$ is the HI bias, and $r_{{HI},{opt}}$ the\r\ngalaxy-hydrogen correlation coefficient, which is dependent on the HI content\r\nof the optical galaxy sample. At $k_{eff}=0.31 \\, h/{Mpc}$ we find\r\n$\\Omega_{{HI}} b_{{HI}} r_{{HI},{Wig}} = [0.58 \\pm 0.09 \\, {(stat) \\pm 0.05 \\,\r\n{(sys)}}] \\times 10^{-3}$ for GBT-WiggleZ, $\\Omega_{{HI}} b_{{HI}}\r\nr_{{HI,{ELG}}} = [0.40 \\pm 0.09 \\, {(stat) \\pm 0.04 \\, {(sys)}}] \\times\r\n10^{-3}$ for GBT-ELG, and $\\Omega_{{HI}} b_{{HI}} r_{{HI},{LRG}} = [0.35 \\pm\r\n0.08 \\, {(stat) \\pm 0.03 \\, {(sys)}}] \\times 10^{-3}$ for GBT-LRG, at $z\\simeq\r\n0.8$. We also report results at $k_{eff}=0.24 \\, h/{Mpc}$ and $k_{eff}=0.48 \\,\r\nh/{Mpc}$. With little information on HI parameters beyond our local Universe,\r\nthese are amongst the most precise constraints on neutral hydrogen density\r\nfluctuations in an underexplored redshift range.},\n added-at = {2021-02-10T12:13:13.000+0100},\n author = {Wolz, Laura and Pourtsidou, Alkistis and Masui, Kiyoshi W. and Chang, Tzu-Ching and Bautista, Julian E. and Mueller, Eva-Maria and Avila, Santiago and Bacon, David and Percival, Will J. and Cunnington, Steven and Anderson, Chris and Chen, Xuelei and Kneib, Jean-Paul and Li, Yi-Chao and Liao, Yu-Wei and Pen, Ue-Li and Peterson, Jeffrey B. and Rossi, Graziano and Schneider, Donald P. and Yadav, Jaswant and Zhao, Gong-Bo},\n biburl = {https://www.bibsonomy.org/bibtex/24967f64a58efbe9ded8a39471759d808/gpkulkarni},\n description = {HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps},\n interhash = {df0dd68fc303a78099aeca660dbd9f33},\n intrahash = {4967f64a58efbe9ded8a39471759d808},\n keywords = {library},\n note = {cite arxiv:2102.04946Comment: 16 pages, 15 figures, 1 table; submitted to MNRAS},\n timestamp = {2021-02-10T12:13:13.000+0100},\n title = {HI constraints from the cross-correlation of eBOSS galaxies and Green\r\n Bank Telescope intensity maps},\n url = {http://arxiv.org/abs/2102.04946},\n year = 2021\n}\n\n","author_short":["Wolz, L.","Pourtsidou, A.","Masui, K. W.","Chang, T.","Bautista, J. E.","Mueller, E.","Avila, S.","Bacon, D.","Percival, W. J.","Cunnington, S.","Anderson, C.","Chen, X.","Kneib, J.","Li, Y.","Liao, Y.","Pen, U.","Peterson, J. B.","Rossi, G.","Schneider, D. P.","Yadav, J.","Zhao, G."],"key":"wolz2021constraints","id":"wolz2021constraints","bibbaseid":"wolz-pourtsidou-masui-chang-bautista-mueller-avila-bacon-etal-hiconstraintsfromthecrosscorrelationofebossgalaxiesandgreenbanktelescopeintensitymaps-2021","role":"author","urls":{"Paper":"http://arxiv.org/abs/2102.04946"},"keyword":["library"],"metadata":{"authorlinks":{}}},"bibtype":"misc","biburl":"http://www.bibsonomy.org/bib/author/Schneider?items=1000","dataSources":["i8SRmtQi2JMEkzH9M"],"keywords":["library"],"search_terms":["constraints","cross","correlation","eboss","galaxies","green","bank","telescope","intensity","maps","wolz","pourtsidou","masui","chang","bautista","mueller","avila","bacon","percival","cunnington","anderson","chen","kneib","li","liao","pen","peterson","rossi","schneider","yadav","zhao"],"title":"HI constraints from the cross-correlation of eBOSS galaxies and Green Bank Telescope intensity maps","year":2021}