Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources
Covering $\sim$5600 deg$^2$ to rms sensitivities of $\sim$70$-$100 $\mu$Jy beam$^{-1}$, the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS-DR2) provides the largest low-frequency ($\sim$150 MHz) radio catalogue to date, making it an excellent tool for large-area radio cosmology studies. In this wo...
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| creator | Hale, C. L Schwarz, D. J Best, P. N Nakoneczny, S. J Alonso, D Bacon, D Böhme, L Bhardwaj, N Bilicki, M Camera, S Heneka, C. S Pashapour-Ahmadabadi, M Tiwari, P Zheng, J Duncan, K. J Jarvis, M. J Kondapally, R Magliocchetti, M Rottgering, H. J. A Shimwell, T. W |
| description | Covering $\sim$5600 deg$^2$ to rms sensitivities of $\sim$70$-$100 $\mu$Jy
beam$^{-1}$, the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS-DR2) provides
the largest low-frequency ($\sim$150 MHz) radio catalogue to date, making it an
excellent tool for large-area radio cosmology studies. In this work, we use
LoTSS-DR2 sources to investigate the angular two-point correlation function of
galaxies within the survey. We discuss systematics in the data and an improved
methodology for generating random catalogues, compared to that used for
LoTSS-DR1, before presenting the angular clustering for $\sim$900,000 sources
$\geq$$1.5$ mJy and a peak signal-to-noise $\geq$$7.5$ across $\sim$$80\%$ of
the observed area. Using the clustering we infer the bias assuming two
evolutionary models. When fitting {angular scales of $0.5 \leq\theta |
| doi_str_mv | 10.48550/arxiv.2310.07627 |
| format | Article |
| fullrecord | <record><control><sourceid>arxiv_GOX</sourceid><recordid>TN_cdi_arxiv_primary_2310_07627</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2310_07627</sourcerecordid><originalsourceid>FETCH-LOGICAL-a677-23385af462c49c3266b37352172ba597b6828b227f58850e1adfc6312dec089f3</originalsourceid><addsrcrecordid>eNotz81Og0AUhuHZuDDVC3DluQEqnGF-cEfQqglJE2BryAFmCBE6ZihV7l5tXX3Ju_iSh7G7KNzGWojwgfz3cNoi_w2hkqiu2Xvm5smNrl_BejdBvt-lBVRfLpjM0RsoP1YoF38yKzzRkaAwo6HZAD5CeuiXkTxk4zIfjR8OPTgLBXWDg9ItvjXzDbuyNM7m9n83rNo9V9lrkO9f3rI0D0gqFSDnWpCNJbZx0nKUsuGKC4wUNiQS1UiNukFUVmgtQhNRZ1vJI-xMG-rE8g27v9yeffWnHybya_3nrM9O_gNvAUwB</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources</title><source>arXiv.org</source><creator>Hale, C. L ; Schwarz, D. J ; Best, P. N ; Nakoneczny, S. J ; Alonso, D ; Bacon, D ; Böhme, L ; Bhardwaj, N ; Bilicki, M ; Camera, S ; Heneka, C. S ; Pashapour-Ahmadabadi, M ; Tiwari, P ; Zheng, J ; Duncan, K. J ; Jarvis, M. J ; Kondapally, R ; Magliocchetti, M ; Rottgering, H. J. A ; Shimwell, T. W</creator><creatorcontrib>Hale, C. L ; Schwarz, D. J ; Best, P. N ; Nakoneczny, S. J ; Alonso, D ; Bacon, D ; Böhme, L ; Bhardwaj, N ; Bilicki, M ; Camera, S ; Heneka, C. S ; Pashapour-Ahmadabadi, M ; Tiwari, P ; Zheng, J ; Duncan, K. J ; Jarvis, M. J ; Kondapally, R ; Magliocchetti, M ; Rottgering, H. J. A ; Shimwell, T. W</creatorcontrib><description>Covering $\sim$5600 deg$^2$ to rms sensitivities of $\sim$70$-$100 $\mu$Jy
beam$^{-1}$, the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS-DR2) provides
the largest low-frequency ($\sim$150 MHz) radio catalogue to date, making it an
excellent tool for large-area radio cosmology studies. In this work, we use
LoTSS-DR2 sources to investigate the angular two-point correlation function of
galaxies within the survey. We discuss systematics in the data and an improved
methodology for generating random catalogues, compared to that used for
LoTSS-DR1, before presenting the angular clustering for $\sim$900,000 sources
$\geq$$1.5$ mJy and a peak signal-to-noise $\geq$$7.5$ across $\sim$$80\%$ of
the observed area. Using the clustering we infer the bias assuming two
evolutionary models. When fitting {angular scales of $0.5 \leq\theta<5\,\deg$,
using a linear bias model, we find LoTSS-DR2 sources are biased tracers of the
underlying matter, with a bias of $b_{C}= 2.14^{+0.22}_{-0.20}$ (assuming
constant bias) and $b_{E}(z=0)= 1.79^{+0.15}_{-0.14}$ (for an evolving model,
inversely proportional to the growth factor), corresponding to $b_E=
2.81^{+0.24}_{-0.22}$ at the median redshift of our sample, assuming the LoTSS
Deep Fields redshift distribution is representative of our data. This reduces
to $b_{C}= 2.02^{+0.17}_{-0.16}$ and $b_{E}(z=0)= 1.67^{+0.12}_{-0.12}$ when
allowing preferential redshift distributions from the Deep Fields to model our
data. Whilst the clustering amplitude is slightly lower than LoTSS-DR1 ($\geq$2
mJy), our study benefits from larger samples and improved redshift estimates.</description><identifier>DOI: 10.48550/arxiv.2310.07627</identifier><language>eng</language><subject>Physics - Astrophysics of Galaxies ; Physics - Cosmology and Nongalactic Astrophysics</subject><creationdate>2023-10</creationdate><rights>http://creativecommons.org/licenses/by/4.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2310.07627$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2310.07627$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Hale, C. L</creatorcontrib><creatorcontrib>Schwarz, D. J</creatorcontrib><creatorcontrib>Best, P. N</creatorcontrib><creatorcontrib>Nakoneczny, S. J</creatorcontrib><creatorcontrib>Alonso, D</creatorcontrib><creatorcontrib>Bacon, D</creatorcontrib><creatorcontrib>Böhme, L</creatorcontrib><creatorcontrib>Bhardwaj, N</creatorcontrib><creatorcontrib>Bilicki, M</creatorcontrib><creatorcontrib>Camera, S</creatorcontrib><creatorcontrib>Heneka, C. S</creatorcontrib><creatorcontrib>Pashapour-Ahmadabadi, M</creatorcontrib><creatorcontrib>Tiwari, P</creatorcontrib><creatorcontrib>Zheng, J</creatorcontrib><creatorcontrib>Duncan, K. J</creatorcontrib><creatorcontrib>Jarvis, M. J</creatorcontrib><creatorcontrib>Kondapally, R</creatorcontrib><creatorcontrib>Magliocchetti, M</creatorcontrib><creatorcontrib>Rottgering, H. J. A</creatorcontrib><creatorcontrib>Shimwell, T. W</creatorcontrib><title>Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources</title><description>Covering $\sim$5600 deg$^2$ to rms sensitivities of $\sim$70$-$100 $\mu$Jy
beam$^{-1}$, the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS-DR2) provides
the largest low-frequency ($\sim$150 MHz) radio catalogue to date, making it an
excellent tool for large-area radio cosmology studies. In this work, we use
LoTSS-DR2 sources to investigate the angular two-point correlation function of
galaxies within the survey. We discuss systematics in the data and an improved
methodology for generating random catalogues, compared to that used for
LoTSS-DR1, before presenting the angular clustering for $\sim$900,000 sources
$\geq$$1.5$ mJy and a peak signal-to-noise $\geq$$7.5$ across $\sim$$80\%$ of
the observed area. Using the clustering we infer the bias assuming two
evolutionary models. When fitting {angular scales of $0.5 \leq\theta<5\,\deg$,
using a linear bias model, we find LoTSS-DR2 sources are biased tracers of the
underlying matter, with a bias of $b_{C}= 2.14^{+0.22}_{-0.20}$ (assuming
constant bias) and $b_{E}(z=0)= 1.79^{+0.15}_{-0.14}$ (for an evolving model,
inversely proportional to the growth factor), corresponding to $b_E=
2.81^{+0.24}_{-0.22}$ at the median redshift of our sample, assuming the LoTSS
Deep Fields redshift distribution is representative of our data. This reduces
to $b_{C}= 2.02^{+0.17}_{-0.16}$ and $b_{E}(z=0)= 1.67^{+0.12}_{-0.12}$ when
allowing preferential redshift distributions from the Deep Fields to model our
data. Whilst the clustering amplitude is slightly lower than LoTSS-DR1 ($\geq$2
mJy), our study benefits from larger samples and improved redshift estimates.</description><subject>Physics - Astrophysics of Galaxies</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNotz81Og0AUhuHZuDDVC3DluQEqnGF-cEfQqglJE2BryAFmCBE6ZihV7l5tXX3Ju_iSh7G7KNzGWojwgfz3cNoi_w2hkqiu2Xvm5smNrl_BejdBvt-lBVRfLpjM0RsoP1YoF38yKzzRkaAwo6HZAD5CeuiXkTxk4zIfjR8OPTgLBXWDg9ItvjXzDbuyNM7m9n83rNo9V9lrkO9f3rI0D0gqFSDnWpCNJbZx0nKUsuGKC4wUNiQS1UiNukFUVmgtQhNRZ1vJI-xMG-rE8g27v9yeffWnHybya_3nrM9O_gNvAUwB</recordid><startdate>20231011</startdate><enddate>20231011</enddate><creator>Hale, C. L</creator><creator>Schwarz, D. J</creator><creator>Best, P. N</creator><creator>Nakoneczny, S. J</creator><creator>Alonso, D</creator><creator>Bacon, D</creator><creator>Böhme, L</creator><creator>Bhardwaj, N</creator><creator>Bilicki, M</creator><creator>Camera, S</creator><creator>Heneka, C. S</creator><creator>Pashapour-Ahmadabadi, M</creator><creator>Tiwari, P</creator><creator>Zheng, J</creator><creator>Duncan, K. J</creator><creator>Jarvis, M. J</creator><creator>Kondapally, R</creator><creator>Magliocchetti, M</creator><creator>Rottgering, H. J. A</creator><creator>Shimwell, T. W</creator><scope>GOX</scope></search><sort><creationdate>20231011</creationdate><title>Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources</title><author>Hale, C. L ; Schwarz, D. J ; Best, P. N ; Nakoneczny, S. J ; Alonso, D ; Bacon, D ; Böhme, L ; Bhardwaj, N ; Bilicki, M ; Camera, S ; Heneka, C. S ; Pashapour-Ahmadabadi, M ; Tiwari, P ; Zheng, J ; Duncan, K. J ; Jarvis, M. J ; Kondapally, R ; Magliocchetti, M ; Rottgering, H. J. A ; Shimwell, T. W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a677-23385af462c49c3266b37352172ba597b6828b227f58850e1adfc6312dec089f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Physics - Astrophysics of Galaxies</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Hale, C. L</creatorcontrib><creatorcontrib>Schwarz, D. J</creatorcontrib><creatorcontrib>Best, P. N</creatorcontrib><creatorcontrib>Nakoneczny, S. J</creatorcontrib><creatorcontrib>Alonso, D</creatorcontrib><creatorcontrib>Bacon, D</creatorcontrib><creatorcontrib>Böhme, L</creatorcontrib><creatorcontrib>Bhardwaj, N</creatorcontrib><creatorcontrib>Bilicki, M</creatorcontrib><creatorcontrib>Camera, S</creatorcontrib><creatorcontrib>Heneka, C. S</creatorcontrib><creatorcontrib>Pashapour-Ahmadabadi, M</creatorcontrib><creatorcontrib>Tiwari, P</creatorcontrib><creatorcontrib>Zheng, J</creatorcontrib><creatorcontrib>Duncan, K. J</creatorcontrib><creatorcontrib>Jarvis, M. J</creatorcontrib><creatorcontrib>Kondapally, R</creatorcontrib><creatorcontrib>Magliocchetti, M</creatorcontrib><creatorcontrib>Rottgering, H. J. A</creatorcontrib><creatorcontrib>Shimwell, T. W</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Hale, C. L</au><au>Schwarz, D. J</au><au>Best, P. N</au><au>Nakoneczny, S. J</au><au>Alonso, D</au><au>Bacon, D</au><au>Böhme, L</au><au>Bhardwaj, N</au><au>Bilicki, M</au><au>Camera, S</au><au>Heneka, C. S</au><au>Pashapour-Ahmadabadi, M</au><au>Tiwari, P</au><au>Zheng, J</au><au>Duncan, K. J</au><au>Jarvis, M. J</au><au>Kondapally, R</au><au>Magliocchetti, M</au><au>Rottgering, H. J. A</au><au>Shimwell, T. W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources</atitle><date>2023-10-11</date><risdate>2023</risdate><abstract>Covering $\sim$5600 deg$^2$ to rms sensitivities of $\sim$70$-$100 $\mu$Jy
beam$^{-1}$, the LOFAR Two-metre Sky Survey Data Release 2 (LoTSS-DR2) provides
the largest low-frequency ($\sim$150 MHz) radio catalogue to date, making it an
excellent tool for large-area radio cosmology studies. In this work, we use
LoTSS-DR2 sources to investigate the angular two-point correlation function of
galaxies within the survey. We discuss systematics in the data and an improved
methodology for generating random catalogues, compared to that used for
LoTSS-DR1, before presenting the angular clustering for $\sim$900,000 sources
$\geq$$1.5$ mJy and a peak signal-to-noise $\geq$$7.5$ across $\sim$$80\%$ of
the observed area. Using the clustering we infer the bias assuming two
evolutionary models. When fitting {angular scales of $0.5 \leq\theta<5\,\deg$,
using a linear bias model, we find LoTSS-DR2 sources are biased tracers of the
underlying matter, with a bias of $b_{C}= 2.14^{+0.22}_{-0.20}$ (assuming
constant bias) and $b_{E}(z=0)= 1.79^{+0.15}_{-0.14}$ (for an evolving model,
inversely proportional to the growth factor), corresponding to $b_E=
2.81^{+0.24}_{-0.22}$ at the median redshift of our sample, assuming the LoTSS
Deep Fields redshift distribution is representative of our data. This reduces
to $b_{C}= 2.02^{+0.17}_{-0.16}$ and $b_{E}(z=0)= 1.67^{+0.12}_{-0.12}$ when
allowing preferential redshift distributions from the Deep Fields to model our
data. Whilst the clustering amplitude is slightly lower than LoTSS-DR1 ($\geq$2
mJy), our study benefits from larger samples and improved redshift estimates.</abstract><doi>10.48550/arxiv.2310.07627</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics |
| title | Cosmology from LOFAR Two-metre Sky Survey Data Release 2: Angular Clustering of Radio Sources |
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