Non-parametric deprojection of NIKA SZ observations: Pressure distribution in the Planck-discovered cluster PSZ1 G045.85+57.71 - IRFU-AIM Accéder directement au contenu
Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2017

Non-parametric deprojection of NIKA SZ observations: Pressure distribution in the Planck-discovered cluster PSZ1 G045.85+57.71

R. Adam
P. Ade
  • Fonction : Auteur
M. Arnaud
  • Fonction : Auteur
A. Beelen
M. Calvo
  • Fonction : Auteur
M. de Petris
  • Fonction : Auteur
S. Doyle
  • Fonction : Auteur
P. Mauskopf
  • Fonction : Auteur
F. Pajot
E. Pascale
  • Fonction : Auteur
L. Perotto
G. Pisano
  • Fonction : Auteur
G. W. Pratt
  • Fonction : Auteur
V. Revéret
  • Fonction : Auteur
L. Rodriguez
  • Fonction : Auteur
S. Triqueneaux
  • Fonction : Auteur
C. Tucker
  • Fonction : Auteur

Résumé

The determination of the thermodynamic properties of clusters of galaxies at intermediate and high redshift can bring new insights into the formation of large-scale structures. It is essential for a robust calibration of the mass-observable scaling relations and their scatter, which are key ingredients for precise cosmology using cluster statistics. Here we illustrate an application of high resolution (<20 arcsec) thermal Sunyaev-Zel’dovich (tSZ) observations by probing the intracluster medium (ICM) of the Planck-discovered galaxy cluster PSZ1 G045.85+57.71 at redshift z = 0.61, using tSZ data obtained with the NIKA camera, which is a dual-band (150 and 260 GHz) instrument operated at the IRAM 30-m telescope. We deproject jointly NIKA and Planck data to extract the electronic pressure distribution from the cluster core (R ~ 0.02 R500) to its outskirts (R ~ 3 R500) non-parametrically for the first time at intermediate redshift. The constraints on the resulting pressure profile allow us to reduce the relative uncertainty on the integrated Compton parameter by a factor of two compared to the Planck value. Combining the tSZ data and the deprojected electronic density profile from XMM-Newton allows us to undertake a hydrostatic mass analysis, for which we study the impact of a spherical model assumption on the total mass estimate. We also investigate the radial temperature and entropy distributions. These data indicate that PSZ1 G045.85+57.71 is a massive (M500 ~ 5.5 × 1014M⊙) cool-core cluster. This work is part of a pilot study aiming at optimizing the treatment of the NIKA2 tSZ large program dedicated to the follow-up of SZ-discovered clusters at intermediate and high redshifts. This study illustrates the potential of NIKA2 to put constraints on thethermodynamic properties and tSZ-scaling relations of these clusters, and demonstrates the excellent synergy between tSZ and X-ray observations of similar angular resolution.
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Dates et versions

in2p3-01349507 , version 1 (19-01-2021)

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Citer

F. Ruppin, R. Adam, B. Comis, P. Ade, P. André, et al.. Non-parametric deprojection of NIKA SZ observations: Pressure distribution in the Planck-discovered cluster PSZ1 G045.85+57.71. Astronomy and Astrophysics - A&A, 2017, 597, pp.A110. ⟨10.1051/0004-6361/201629405⟩. ⟨in2p3-01349507⟩
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