We have constructed all-sky Compton parameters maps, y-maps, of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to the 30 to 857 GHz frequency channel maps from the Planck satellite. These reconstructed y-maps are delivered as part of the Planck 2015 release. The y-maps are characterized in terms of noise properties and residual foreground contamination, mainly thermal dust emission at large angular scales, and cosmic infrared background and extragalactic point sources at small angular scales. Specific masks are defined to minimize foreground residuals and systematics. Using these masks, we compute the y-map angular power spectrum and higher order statistics. From these we conclude that the y-map is dominated by tSZ signal in the multipole range, 20 <" < 600. We compare the measured tSZ power spectrum and higher order statistics to various physically motivated models and discuss the implications of our results in terms of cluster physics and cosmology.

Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A., et al. (2016). Planck 2015 results: XXII. A map of the thermal Sunyaev-Zeldovich effect. ASTRONOMY & ASTROPHYSICS, 594 [10.1051/0004-6361/201525826].

Planck 2015 results: XXII. A map of the thermal Sunyaev-Zeldovich effect

NATI, FEDERICO;
2016

Abstract

We have constructed all-sky Compton parameters maps, y-maps, of the thermal Sunyaev-Zeldovich (tSZ) effect by applying specifically tailored component separation algorithms to the 30 to 857 GHz frequency channel maps from the Planck satellite. These reconstructed y-maps are delivered as part of the Planck 2015 release. The y-maps are characterized in terms of noise properties and residual foreground contamination, mainly thermal dust emission at large angular scales, and cosmic infrared background and extragalactic point sources at small angular scales. Specific masks are defined to minimize foreground residuals and systematics. Using these masks, we compute the y-map angular power spectrum and higher order statistics. From these we conclude that the y-map is dominated by tSZ signal in the multipole range, 20 <" < 600. We compare the measured tSZ power spectrum and higher order statistics to various physically motivated models and discuss the implications of our results in terms of cluster physics and cosmology.
Articolo in rivista - Articolo scientifico
Cosmology: observations; Large-Scale structure of Universe;
Cosmology: observations; Large-Scale structure of Universe; Astronomy and Astrophysics; Space and Planetary Science
English
2016
594
A22
open
Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., Banday, A., et al. (2016). Planck 2015 results: XXII. A map of the thermal Sunyaev-Zeldovich effect. ASTRONOMY & ASTROPHYSICS, 594 [10.1051/0004-6361/201525826].
File in questo prodotto:
File Dimensione Formato  
10281-217315.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 7.58 MB
Formato Adobe PDF
7.58 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/217315
Citazioni
  • Scopus 108
  • ???jsp.display-item.citation.isi??? 191
Social impact