Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts
We present constraints on cosmological parameters using number counts as a function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ (PSZ) catalogue. The PSZ is selected through the signature of the Sunyaev-Zeldovich (SZ) effect, and the sub-sample used here has a signal-to-noi...
Published in: | Astronomy & Astrophysics |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
EDP SCIENCES S A
2014
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Subjects: | |
Online Access: | http://hdl.handle.net/10044/1/60455 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345282600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 https://doi.org/10.1051/0004-6361/201321521 |
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ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/60455 |
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openpolar |
institution |
Open Polar |
collection |
Imperial College London: Spiral |
op_collection_id |
ftimperialcol |
language |
English |
topic |
Science & Technology Physical Sciences Astronomy & Astrophysics cosmological parameters large-scale structure of Universe galaxies: clusters: general BARYON ACOUSTIC-OSCILLATIONS SOUTH-POLE TELESCOPE MASSIVE GALAXY CLUSTERS LARGE-SCALE STRUCTURE DIGITAL SKY SURVEY X-RAY-PROPERTIES SPT-SZ SURVEY XMM-NEWTON HYDRODYNAMIC SIMULATIONS NONTHERMAL PRESSURE astro-ph.CO 0201 Astronomical And Space Sciences |
spellingShingle |
Science & Technology Physical Sciences Astronomy & Astrophysics cosmological parameters large-scale structure of Universe galaxies: clusters: general BARYON ACOUSTIC-OSCILLATIONS SOUTH-POLE TELESCOPE MASSIVE GALAXY CLUSTERS LARGE-SCALE STRUCTURE DIGITAL SKY SURVEY X-RAY-PROPERTIES SPT-SZ SURVEY XMM-NEWTON HYDRODYNAMIC SIMULATIONS NONTHERMAL PRESSURE astro-ph.CO 0201 Astronomical And Space Sciences Ade, PAR Aghanim, N Armitage-Caplan, C Arnaud, M Ashdown, M Atrio-Barandela, F Aumont, J Baccigalupi, C Banday, AJ Barreiro, RB Barrena, R Bartlett, JG Battaner, E Battye, R Benabed, K Benoit, A Benoit-Levy, A Bernard, J-P Bersanelli, M Bielewicz, P Bikmaev, I Blanchard, A Bobin, J Bock, JJ Boehringer, H Bonaldi, A Bond, JR Borrill, J Bouchet, FR Bourdin, H Bridges, M Brown, ML Bucher, M Burenin, R Burigana, C Butler, RC Cardoso, J-F Carvalho, P Catalano, A Challinor, A Chamballu, A Chary, R-R Chiang, L-Y Chiang, HC Chon, G Christensen, PR Church, S Clements, DL Colombi, S Colombo, LPL Couchot, F Coulais, A Crill, BP Curto, A Cuttaia, F Da Silva, A Dahle, H Danese, L Davies, RD Davis, RJ De Bernardis, P De Rosa, A De Zotti, G Delabrouille, J Delouis, J-M Democles, J Desert, F-X Dickinson, C Diego, JM Dolag, K Dole, H Donzelli, S Dore, O Douspis, M Dupac, X Efstathiou, G Ensslin, TA Eriksen, HK Finelli, F Flores-Cacho, I Forni, O Frailis, M Franceschi, E Fromenteau, S Galeotta, S Ganga, K Genova-Santos, RT Giard, M Giardino, G Giraud-Heraud, Y Gonzalez-Nuevo, J Gorski, KM Gratton, S Gregorio, A Gruppuso, A Hansen, FK Hanson, D Harrison, D Henrot-Versille, S Hernandez-Monteagudo, C Herranz, D Hildebrandt, SR Hivon, E Hobson, M Holmes, WA Hornstrup, A Hovest, W Huffenberger, KM Hurier, G Jaffe, TR Jaffe, AH Jones, WC Juvela, M Keihanen, E Keskitalo, R Khamitov, I Kisner, TS Kneissl, R Knoche, J Knox, L Kunz, M Kurki-Suonio, H Lagache, G Lahteenmaki, A Lamarre, J-M Lasenby, A Laureijs, RJ Lawrence, CR Leahy, JP Leonardi, R Leon-Tavares, J Lesgourgues, J Liddle, A Liguori, M Lilje, PB Linden-Vornle, M Lopez-Caniego, M Lubin, PM Macias-Perez, JF Maffei, B Maino, D Mandolesi, N Marcos-Caballero, A Maris, M Marshall, DJ Martin, PG Martinez-Gonzalez, E Masi, S Matarrese, S Matthai, F Mazzotta, P Meinhold, PR Melchiorri, A Melin, J-B Mendes, L Mennella, A Migliaccio, M Mitra, S Miville-Deschenes, M-A Moneti, A Montier, L Morgante, G Mortlock, D Moss, A Munshi, D Naselsky, P Nati, F Natoli, P Netterfield, CB Norgaard-Nielsen, HU Noviello, F Novikov, D Novikov, I Osborne, S Oxborrow, CA Paci, F Pagano, L Pajot, F Paoletti, D Partridge, B Pasian, F Patanchon, G Perdereau, O Perotto, L Perrotta, F Piacentini, F Piat, M Pierpaoli, E Pietrobon, D Plaszczynski, S Pointecouteau, E Polenta, G Ponthieu, N Popa, L Poutanen, T Pratt, GW Prezeau, G Prunet, S Puget, J-L Rachen, JP Rebolo, R Reinecke, M Remazeilles, M Renault, C Ricciardi, S Riller, T Ristorcelli, I Rocha, G Roman, M Rosset, C Roudier, G Rowan-Robinson, M Rubino-Martin, A Rusholme, B Sandri, M Santos, D Savini, G Scott, D Seiffert, MD Shellard, EPS Spencer, LD Starck, J-L Stolyarov, V Stompor, R Sudiwala, R Sunyaev, R Sureau, F Sutton, D Suur-Uski, A-S Sygnet, J-F Tauber, JA Tavagnacco, D Terenzi, L Toffolatti, L Tomasi, M Tristram, M Tucci, M Tuovinen, J Tuerler, M Umana, G Valenziano, L Valiviita, J Van Tent, B Vielva, P Villa, F Vittorio, N Wade, LA Wandelt, BD Weller, J White, M White, SDM Yvon, D Zacchei, A Zonca, A Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
topic_facet |
Science & Technology Physical Sciences Astronomy & Astrophysics cosmological parameters large-scale structure of Universe galaxies: clusters: general BARYON ACOUSTIC-OSCILLATIONS SOUTH-POLE TELESCOPE MASSIVE GALAXY CLUSTERS LARGE-SCALE STRUCTURE DIGITAL SKY SURVEY X-RAY-PROPERTIES SPT-SZ SURVEY XMM-NEWTON HYDRODYNAMIC SIMULATIONS NONTHERMAL PRESSURE astro-ph.CO 0201 Astronomical And Space Sciences |
description |
We present constraints on cosmological parameters using number counts as a function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ (PSZ) catalogue. The PSZ is selected through the signature of the Sunyaev-Zeldovich (SZ) effect, and the sub-sample used here has a signal-to-noise threshold of seven, with each object confirmed as a cluster and all but one with a redshift estimate. We discuss the completeness of the sample and our construction of a likelihood analysis. Using a relation between mass M and SZ signal Y calibrated to X-ray measurements, we derive constraints on the power spectrum amplitude σ8 and matter density parameter Ωm in a flat ΛCDM model. We test the robustness of our estimates and find that possible biases in the Y–M relation and the halo mass function are larger than the statistical uncertainties from the cluster sample. Assuming the X-ray determined mass to be biased low relative to the true mass by between zero and 30%, motivated by comparison of the observed mass scaling relations to those from a set of numerical simulations, we find that σ8 = 0.75 ± 0.03, Ωm = 0.29 ± 0.02, and σ8(Ωm/ 0.27)0.3 = 0.764 ± 0.025. The value of σ8 is degenerate with the mass bias; if the latter is fixed to a value of 20% (the central value from numerical simulations) we find σ8(Ωm/0.27)0.3 = 0.78 ± 0.01 and a tighter one-dimensional range σ8 = 0.77 ± 0.02. We find that the larger values of σ8 and Ωm preferred by Planck’s measurements of the primary CMB anisotropies can be accommodated by a mass bias of about 40%. Alternatively, consistency with the primary CMB constraints can be achieved by inclusion of processes that suppress power on small scales relative to the ΛCDM model, such as a component of massive neutrinos. We place our results in the context of other determinations of cosmologicalparameters, and discuss issues that need to be resolved in order to make further progress in this field. |
author2 |
Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council 2006-2012 |
format |
Article in Journal/Newspaper |
author |
Ade, PAR Aghanim, N Armitage-Caplan, C Arnaud, M Ashdown, M Atrio-Barandela, F Aumont, J Baccigalupi, C Banday, AJ Barreiro, RB Barrena, R Bartlett, JG Battaner, E Battye, R Benabed, K Benoit, A Benoit-Levy, A Bernard, J-P Bersanelli, M Bielewicz, P Bikmaev, I Blanchard, A Bobin, J Bock, JJ Boehringer, H Bonaldi, A Bond, JR Borrill, J Bouchet, FR Bourdin, H Bridges, M Brown, ML Bucher, M Burenin, R Burigana, C Butler, RC Cardoso, J-F Carvalho, P Catalano, A Challinor, A Chamballu, A Chary, R-R Chiang, L-Y Chiang, HC Chon, G Christensen, PR Church, S Clements, DL Colombi, S Colombo, LPL Couchot, F Coulais, A Crill, BP Curto, A Cuttaia, F Da Silva, A Dahle, H Danese, L Davies, RD Davis, RJ De Bernardis, P De Rosa, A De Zotti, G Delabrouille, J Delouis, J-M Democles, J Desert, F-X Dickinson, C Diego, JM Dolag, K Dole, H Donzelli, S Dore, O Douspis, M Dupac, X Efstathiou, G Ensslin, TA Eriksen, HK Finelli, F Flores-Cacho, I Forni, O Frailis, M Franceschi, E Fromenteau, S Galeotta, S Ganga, K Genova-Santos, RT Giard, M Giardino, G Giraud-Heraud, Y Gonzalez-Nuevo, J Gorski, KM Gratton, S Gregorio, A Gruppuso, A Hansen, FK Hanson, D Harrison, D Henrot-Versille, S Hernandez-Monteagudo, C Herranz, D Hildebrandt, SR Hivon, E Hobson, M Holmes, WA Hornstrup, A Hovest, W Huffenberger, KM Hurier, G Jaffe, TR Jaffe, AH Jones, WC Juvela, M Keihanen, E Keskitalo, R Khamitov, I Kisner, TS Kneissl, R Knoche, J Knox, L Kunz, M Kurki-Suonio, H Lagache, G Lahteenmaki, A Lamarre, J-M Lasenby, A Laureijs, RJ Lawrence, CR Leahy, JP Leonardi, R Leon-Tavares, J Lesgourgues, J Liddle, A Liguori, M Lilje, PB Linden-Vornle, M Lopez-Caniego, M Lubin, PM Macias-Perez, JF Maffei, B Maino, D Mandolesi, N Marcos-Caballero, A Maris, M Marshall, DJ Martin, PG Martinez-Gonzalez, E Masi, S Matarrese, S Matthai, F Mazzotta, P Meinhold, PR Melchiorri, A Melin, J-B Mendes, L Mennella, A Migliaccio, M Mitra, S Miville-Deschenes, M-A Moneti, A Montier, L Morgante, G Mortlock, D Moss, A Munshi, D Naselsky, P Nati, F Natoli, P Netterfield, CB Norgaard-Nielsen, HU Noviello, F Novikov, D Novikov, I Osborne, S Oxborrow, CA Paci, F Pagano, L Pajot, F Paoletti, D Partridge, B Pasian, F Patanchon, G Perdereau, O Perotto, L Perrotta, F Piacentini, F Piat, M Pierpaoli, E Pietrobon, D Plaszczynski, S Pointecouteau, E Polenta, G Ponthieu, N Popa, L Poutanen, T Pratt, GW Prezeau, G Prunet, S Puget, J-L Rachen, JP Rebolo, R Reinecke, M Remazeilles, M Renault, C Ricciardi, S Riller, T Ristorcelli, I Rocha, G Roman, M Rosset, C Roudier, G Rowan-Robinson, M Rubino-Martin, A Rusholme, B Sandri, M Santos, D Savini, G Scott, D Seiffert, MD Shellard, EPS Spencer, LD Starck, J-L Stolyarov, V Stompor, R Sudiwala, R Sunyaev, R Sureau, F Sutton, D Suur-Uski, A-S Sygnet, J-F Tauber, JA Tavagnacco, D Terenzi, L Toffolatti, L Tomasi, M Tristram, M Tucci, M Tuovinen, J Tuerler, M Umana, G Valenziano, L Valiviita, J Van Tent, B Vielva, P Villa, F Vittorio, N Wade, LA Wandelt, BD Weller, J White, M White, SDM Yvon, D Zacchei, A Zonca, A |
author_facet |
Ade, PAR Aghanim, N Armitage-Caplan, C Arnaud, M Ashdown, M Atrio-Barandela, F Aumont, J Baccigalupi, C Banday, AJ Barreiro, RB Barrena, R Bartlett, JG Battaner, E Battye, R Benabed, K Benoit, A Benoit-Levy, A Bernard, J-P Bersanelli, M Bielewicz, P Bikmaev, I Blanchard, A Bobin, J Bock, JJ Boehringer, H Bonaldi, A Bond, JR Borrill, J Bouchet, FR Bourdin, H Bridges, M Brown, ML Bucher, M Burenin, R Burigana, C Butler, RC Cardoso, J-F Carvalho, P Catalano, A Challinor, A Chamballu, A Chary, R-R Chiang, L-Y Chiang, HC Chon, G Christensen, PR Church, S Clements, DL Colombi, S Colombo, LPL Couchot, F Coulais, A Crill, BP Curto, A Cuttaia, F Da Silva, A Dahle, H Danese, L Davies, RD Davis, RJ De Bernardis, P De Rosa, A De Zotti, G Delabrouille, J Delouis, J-M Democles, J Desert, F-X Dickinson, C Diego, JM Dolag, K Dole, H Donzelli, S Dore, O Douspis, M Dupac, X Efstathiou, G Ensslin, TA Eriksen, HK Finelli, F Flores-Cacho, I Forni, O Frailis, M Franceschi, E Fromenteau, S Galeotta, S Ganga, K Genova-Santos, RT Giard, M Giardino, G Giraud-Heraud, Y Gonzalez-Nuevo, J Gorski, KM Gratton, S Gregorio, A Gruppuso, A Hansen, FK Hanson, D Harrison, D Henrot-Versille, S Hernandez-Monteagudo, C Herranz, D Hildebrandt, SR Hivon, E Hobson, M Holmes, WA Hornstrup, A Hovest, W Huffenberger, KM Hurier, G Jaffe, TR Jaffe, AH Jones, WC Juvela, M Keihanen, E Keskitalo, R Khamitov, I Kisner, TS Kneissl, R Knoche, J Knox, L Kunz, M Kurki-Suonio, H Lagache, G Lahteenmaki, A Lamarre, J-M Lasenby, A Laureijs, RJ Lawrence, CR Leahy, JP Leonardi, R Leon-Tavares, J Lesgourgues, J Liddle, A Liguori, M Lilje, PB Linden-Vornle, M Lopez-Caniego, M Lubin, PM Macias-Perez, JF Maffei, B Maino, D Mandolesi, N Marcos-Caballero, A Maris, M Marshall, DJ Martin, PG Martinez-Gonzalez, E Masi, S Matarrese, S Matthai, F Mazzotta, P Meinhold, PR Melchiorri, A Melin, J-B Mendes, L Mennella, A Migliaccio, M Mitra, S Miville-Deschenes, M-A Moneti, A Montier, L Morgante, G Mortlock, D Moss, A Munshi, D Naselsky, P Nati, F Natoli, P Netterfield, CB Norgaard-Nielsen, HU Noviello, F Novikov, D Novikov, I Osborne, S Oxborrow, CA Paci, F Pagano, L Pajot, F Paoletti, D Partridge, B Pasian, F Patanchon, G Perdereau, O Perotto, L Perrotta, F Piacentini, F Piat, M Pierpaoli, E Pietrobon, D Plaszczynski, S Pointecouteau, E Polenta, G Ponthieu, N Popa, L Poutanen, T Pratt, GW Prezeau, G Prunet, S Puget, J-L Rachen, JP Rebolo, R Reinecke, M Remazeilles, M Renault, C Ricciardi, S Riller, T Ristorcelli, I Rocha, G Roman, M Rosset, C Roudier, G Rowan-Robinson, M Rubino-Martin, A Rusholme, B Sandri, M Santos, D Savini, G Scott, D Seiffert, MD Shellard, EPS Spencer, LD Starck, J-L Stolyarov, V Stompor, R Sudiwala, R Sunyaev, R Sureau, F Sutton, D Suur-Uski, A-S Sygnet, J-F Tauber, JA Tavagnacco, D Terenzi, L Toffolatti, L Tomasi, M Tristram, M Tucci, M Tuovinen, J Tuerler, M Umana, G Valenziano, L Valiviita, J Van Tent, B Vielva, P Villa, F Vittorio, N Wade, LA Wandelt, BD Weller, J White, M White, SDM Yvon, D Zacchei, A Zonca, A |
author_sort |
Ade, PAR |
title |
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
title_short |
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
title_full |
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
title_fullStr |
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
title_full_unstemmed |
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts |
title_sort |
planck 2013 results. xx. cosmology from sunyaev-zeldovich cluster counts |
publisher |
EDP SCIENCES S A |
publishDate |
2014 |
url |
http://hdl.handle.net/10044/1/60455 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345282600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 https://doi.org/10.1051/0004-6361/201321521 |
long_lat |
ENVELOPE(-112.453,-112.453,57.591,57.591) |
geographic |
South Pole The ''Y'' |
geographic_facet |
South Pole The ''Y'' |
genre |
South pole |
genre_facet |
South pole |
op_relation |
ASTRONOMY & ASTROPHYSICS |
op_rights |
© ESO, 2014. Reproduced with permission from Astronomy & Astrophysics, © ESO. |
op_doi |
https://doi.org/10.1051/0004-6361/201321521 |
container_title |
Astronomy & Astrophysics |
container_volume |
571 |
container_start_page |
A20 |
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1766202963353665536 |
spelling |
ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/60455 2023-05-15T18:23:23+02:00 Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts Ade, PAR Aghanim, N Armitage-Caplan, C Arnaud, M Ashdown, M Atrio-Barandela, F Aumont, J Baccigalupi, C Banday, AJ Barreiro, RB Barrena, R Bartlett, JG Battaner, E Battye, R Benabed, K Benoit, A Benoit-Levy, A Bernard, J-P Bersanelli, M Bielewicz, P Bikmaev, I Blanchard, A Bobin, J Bock, JJ Boehringer, H Bonaldi, A Bond, JR Borrill, J Bouchet, FR Bourdin, H Bridges, M Brown, ML Bucher, M Burenin, R Burigana, C Butler, RC Cardoso, J-F Carvalho, P Catalano, A Challinor, A Chamballu, A Chary, R-R Chiang, L-Y Chiang, HC Chon, G Christensen, PR Church, S Clements, DL Colombi, S Colombo, LPL Couchot, F Coulais, A Crill, BP Curto, A Cuttaia, F Da Silva, A Dahle, H Danese, L Davies, RD Davis, RJ De Bernardis, P De Rosa, A De Zotti, G Delabrouille, J Delouis, J-M Democles, J Desert, F-X Dickinson, C Diego, JM Dolag, K Dole, H Donzelli, S Dore, O Douspis, M Dupac, X Efstathiou, G Ensslin, TA Eriksen, HK Finelli, F Flores-Cacho, I Forni, O Frailis, M Franceschi, E Fromenteau, S Galeotta, S Ganga, K Genova-Santos, RT Giard, M Giardino, G Giraud-Heraud, Y Gonzalez-Nuevo, J Gorski, KM Gratton, S Gregorio, A Gruppuso, A Hansen, FK Hanson, D Harrison, D Henrot-Versille, S Hernandez-Monteagudo, C Herranz, D Hildebrandt, SR Hivon, E Hobson, M Holmes, WA Hornstrup, A Hovest, W Huffenberger, KM Hurier, G Jaffe, TR Jaffe, AH Jones, WC Juvela, M Keihanen, E Keskitalo, R Khamitov, I Kisner, TS Kneissl, R Knoche, J Knox, L Kunz, M Kurki-Suonio, H Lagache, G Lahteenmaki, A Lamarre, J-M Lasenby, A Laureijs, RJ Lawrence, CR Leahy, JP Leonardi, R Leon-Tavares, J Lesgourgues, J Liddle, A Liguori, M Lilje, PB Linden-Vornle, M Lopez-Caniego, M Lubin, PM Macias-Perez, JF Maffei, B Maino, D Mandolesi, N Marcos-Caballero, A Maris, M Marshall, DJ Martin, PG Martinez-Gonzalez, E Masi, S Matarrese, S Matthai, F Mazzotta, P Meinhold, PR Melchiorri, A Melin, J-B Mendes, L Mennella, A Migliaccio, M Mitra, S Miville-Deschenes, M-A Moneti, A Montier, L Morgante, G Mortlock, D Moss, A Munshi, D Naselsky, P Nati, F Natoli, P Netterfield, CB Norgaard-Nielsen, HU Noviello, F Novikov, D Novikov, I Osborne, S Oxborrow, CA Paci, F Pagano, L Pajot, F Paoletti, D Partridge, B Pasian, F Patanchon, G Perdereau, O Perotto, L Perrotta, F Piacentini, F Piat, M Pierpaoli, E Pietrobon, D Plaszczynski, S Pointecouteau, E Polenta, G Ponthieu, N Popa, L Poutanen, T Pratt, GW Prezeau, G Prunet, S Puget, J-L Rachen, JP Rebolo, R Reinecke, M Remazeilles, M Renault, C Ricciardi, S Riller, T Ristorcelli, I Rocha, G Roman, M Rosset, C Roudier, G Rowan-Robinson, M Rubino-Martin, A Rusholme, B Sandri, M Santos, D Savini, G Scott, D Seiffert, MD Shellard, EPS Spencer, LD Starck, J-L Stolyarov, V Stompor, R Sudiwala, R Sunyaev, R Sureau, F Sutton, D Suur-Uski, A-S Sygnet, J-F Tauber, JA Tavagnacco, D Terenzi, L Toffolatti, L Tomasi, M Tristram, M Tucci, M Tuovinen, J Tuerler, M Umana, G Valenziano, L Valiviita, J Van Tent, B Vielva, P Villa, F Vittorio, N Wade, LA Wandelt, BD Weller, J White, M White, SDM Yvon, D Zacchei, A Zonca, A Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council (STFC) Science and Technology Facilities Council 2006-2012 2014-02-04 http://hdl.handle.net/10044/1/60455 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345282600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 https://doi.org/10.1051/0004-6361/201321521 English eng EDP SCIENCES S A ASTRONOMY & ASTROPHYSICS © ESO, 2014. Reproduced with permission from Astronomy & Astrophysics, © ESO. Science & Technology Physical Sciences Astronomy & Astrophysics cosmological parameters large-scale structure of Universe galaxies: clusters: general BARYON ACOUSTIC-OSCILLATIONS SOUTH-POLE TELESCOPE MASSIVE GALAXY CLUSTERS LARGE-SCALE STRUCTURE DIGITAL SKY SURVEY X-RAY-PROPERTIES SPT-SZ SURVEY XMM-NEWTON HYDRODYNAMIC SIMULATIONS NONTHERMAL PRESSURE astro-ph.CO 0201 Astronomical And Space Sciences Journal Article 2014 ftimperialcol https://doi.org/10.1051/0004-6361/201321521 2018-09-16T06:02:42Z We present constraints on cosmological parameters using number counts as a function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ (PSZ) catalogue. The PSZ is selected through the signature of the Sunyaev-Zeldovich (SZ) effect, and the sub-sample used here has a signal-to-noise threshold of seven, with each object confirmed as a cluster and all but one with a redshift estimate. We discuss the completeness of the sample and our construction of a likelihood analysis. Using a relation between mass M and SZ signal Y calibrated to X-ray measurements, we derive constraints on the power spectrum amplitude σ8 and matter density parameter Ωm in a flat ΛCDM model. We test the robustness of our estimates and find that possible biases in the Y–M relation and the halo mass function are larger than the statistical uncertainties from the cluster sample. Assuming the X-ray determined mass to be biased low relative to the true mass by between zero and 30%, motivated by comparison of the observed mass scaling relations to those from a set of numerical simulations, we find that σ8 = 0.75 ± 0.03, Ωm = 0.29 ± 0.02, and σ8(Ωm/ 0.27)0.3 = 0.764 ± 0.025. The value of σ8 is degenerate with the mass bias; if the latter is fixed to a value of 20% (the central value from numerical simulations) we find σ8(Ωm/0.27)0.3 = 0.78 ± 0.01 and a tighter one-dimensional range σ8 = 0.77 ± 0.02. We find that the larger values of σ8 and Ωm preferred by Planck’s measurements of the primary CMB anisotropies can be accommodated by a mass bias of about 40%. Alternatively, consistency with the primary CMB constraints can be achieved by inclusion of processes that suppress power on small scales relative to the ΛCDM model, such as a component of massive neutrinos. We place our results in the context of other determinations of cosmologicalparameters, and discuss issues that need to be resolved in order to make further progress in this field. Article in Journal/Newspaper South pole Imperial College London: Spiral South Pole The ''Y'' ENVELOPE(-112.453,-112.453,57.591,57.591) Astronomy & Astrophysics 571 A20 |