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31 results on '"H. Bourdin"'

1. A Deep uGMRT View of the Ultra-steep Spectrum Radio Halo in A521

Author

R. Santra, R. Kale, S. Giacintucci, M. Markevitch, F. De Luca, H. Bourdin, T. Venturi, D. Dallacasa, R. Cassano, G. Brunetti, and K. D. Buch

Subjects
Galaxy clusters, Radio continuum emission, Extragalactic radio sources, Intracluster medium, Non-thermal radiation sources, Astrophysics, QB460-466
Abstract

We present the first detailed analysis of the ultra-steep spectrum radio halo in the merging galaxy cluster A521, based on upgraded Giant Metrewave Radio telescope observations. The combination of radio observations (300–850 MHz) and archival X-ray data provides a new window into the complex physics occurring in this system. When compared to all previous analyses, our sensitive radio images detected the centrally located radio halo emission to a greater extent of ∼1.3 Mpc. A faint extension of the southeastern radio relic has been discovered. We detected another relic, recently discovered by MeerKAT, and coincident with a possible shock front in the X-rays, at the northwest position of the center. We find that the integrated spectrum of the radio halo is well-fitted with a spectral index of −1.86 ± 0.12. A spatially resolved spectral index map revealed the spectral index fluctuations, as well as an outward radial steepening of the average spectral index. The radio and X-ray surface brightness is well correlated for the entire and different subparts of the halo, with sublinear correlation slopes (0.50–0.65). We also found a mild anticorrelation between the spectral index and X-ray surface brightness. Newly detected extensions of the SE relic and the counter relic are consistent with the merger in the plane of the sky.

Published
2024
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2. A Candle in the Wind: A Radio Filament in the Core of the A3562 Galaxy Cluster

Author

S Giacintucci, T Venturi, M Markevitch, H Bourdin, P Mazzatta, P Merluzzi, D Dallacasa, S Bardelli, S P Sikhosana, O Smirnov, and G Bernardi

Subjects
Astrophysics
Abstract

Using a MeerKAT observation of the galaxy cluster A3562 (a member of the Shapley Supercluster), we have discovered a narrow, long and straight, very faint radio filament, which branches out at a straight angle from the tail of a radio galaxy located in projection near the core of the cluster. The radio filament spans 200 kpc and aligns with a sloshing cold front seen in the X-rays, staying inside the front in projection. The radio spectral index along the filament appears uniform (within large uncertainties) atα' −1.5. We propose that the radio galaxy is located outside the cold front, but dips its tail under the front. The tangential wind that blows there may stretch the radio plasma from the radio galaxy into a filamentary structure. Some reacceleration is needed in this scenario to maintain the radio spectrum uniform. Alternatively, the cosmic ray electrons from that spot in the tail can spread along the cluster magnetic field lines, straightened by that same tangential flow, via anomalously fast diffusion. Our radio filament can provide constraints on this process. We also uncover a compact radio source at the Brightest Cluster Galaxy (BCG) that is 2–3 orders of magnitude

Published
2022
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3. CHEX-MATE: Pressure profiles of six galaxy clusters as seen by SPT and Planck

Author

F. Oppizzi, F. De Luca, H. Bourdin, P. Mazzotta, S. Ettori, F. Gastaldello, S. Kay, L. Lovisari, B. J. Maughan, E. Pointecouteau, G. W. Pratt, M. Rossetti, J. Sayers, and M. Sereno

Subjects
Space and Planetary Science, Astronomy and Astrophysics
Abstract

Context. Pressure profiles are sensitive probes of the thermodynamic conditions and the internal structure of galaxy clusters. The intra-cluster gas resides in hydrostatic equilibrium within the dark-matter gravitational potential. However, this equilibrium may be perturbed; for example, as a consequence of thermal energy losses, feedback, and non-thermal pressure supports. Accurate measures of the gas pressure over cosmic time are crucial for constraining cluster evolution as well as the contributions from astrophysical processes. Aims. In this work we present a novel algorithm for deriving the pressure profiles of galaxy clusters from the Sunyaev-Zeldovich (SZ) signal measured on a combination of Planck and South Pole Telescope (SPT) observations. The synergy of the two instruments makes it possible to track the profiles on a wide range of spatial scales. We exploited the sensitivity of the Planck High-Frequency Instrument to the larger scales in order to observe the faint peripheries, and took advantage of the higher spatial resolution of SPT to solve the innermost regions. Methods. We developed a two-step pipeline to take advantage of the specifications of each instrument. We first performed a component separation on the two data sets separately in order to remove the background (CMB) and foreground (Galactic emission) contaminants. We then jointly fitted a parametric pressure profile model on a combination of Planck and SPT data. Results. We validated our technique on a sample of six CHEX-MATE clusters detected by SPT. We compare the results of the SZ analysis with profiles derived from X-ray observations with XMM-Newton. We find excellent agreement between these two independent probes of the gas pressure structure.

Published
2023
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4. The Coma Cluster at LOFAR frequencies. II. The halo, relic, and a new accretion relic

Author

A. Bonafede, G. Brunetti, L. Rudnick, F. Vazza, H. Bourdin, G. Giovannini, T. W. Shimwell, X. Zhang, P. Mazzotta, A. Simionescu, N. Biava, E. Bonnassieux, M. Brienza, M. Brüggen, K. Rajpurohit, C. J. Riseley, C. Stuardi, L. Feretti, C. Tasse, A. Botteon, E. Carretti, R. Cassano, V. Cuciti, F. de Gasperin, F. Gastaldello, M. Rossetti, H. J. A. Rottgering, T. Venturi, and R. J. van Weeren

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Non-thermal radiation sources, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Settore FIS/05, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Galaxy clusters, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Intracluster medium, Extragalactic radio sources, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present LOw Frequency ARray observations of the Coma cluster field at 144\,MHz. The cluster hosts one of the most famous radio halos, a relic, and a low surface-brightness bridge. We detect new features that allow us to make a step forward in the understanding of particle acceleration in clusters. The radio halo extends for more than 2 Mpc, which is the largest extent ever reported. To the North-East of the cluster, beyond the Coma virial radius, we discover an arc-like radio source that could trace particles accelerated by an accretion shock. To the West of the halo, coincident with a shock detected in the X-rays, we confirm the presence of a radio front, with different spectral properties with respect to the rest of the halo. We detect a radial steepening of the radio halo spectral index between 144 MHz and 342 MHz, at $\sim 30^{\prime}$ from the cluster centre, that may indicate a non constant re-acceleration time throughout the volume. We also detect a mild steepening of the spectral index towards the cluster centre. For the first time, a radial change in the slope of the radio-X-ray correlation is found, and we show that such a change could indicate an increasing fraction of cosmic ray versus thermal energy density in the cluster outskirts. Finally, we investigate the origin of the emission between the relic and the source NGC 4789, and we argue that NGC4789 could have crossed the shock originating the radio emission visible between its tail and the relic., submitted to ApJ

Published
2022

5. The Cluster HEritage project with XMM-Newton : Mass Assembly and Thermodynamics at the Endpoint of structure formation

Author

M. Arnaud, S. Ettori, G. W. Pratt, M. Rossetti, D. Eckert, F. Gastaldello, R. Gavazzi, S.T. Kay, L. Lovisari, B.J. Maughan, E. Pointecouteau, M. Sereno, I. Bartalucci, A. Bonafede, H. Bourdin, R. Cassano, R.T. Duffy, A. Iqbal, S. Maurogordato, E. Rasia, J. Sayers, F. Andrade-Santos, H. Aussel, D.J. Barnes, R. Barrena, S. Borgani, S. Burkutean, N. Clerc, P.-S. Corasaniti, J.-C. Cuillandre, S. De Gr

Published
2021
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6. Extracting the thermal SZ signal from heterogeneous millimeter data sets

Author

A. Kozmanyan, H. Bourdin, Pasquale Mazzotta, and Anna Silvia Baldi

Subjects
Physics, 010308 nuclear & particles physics, QC1-999, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Signal, symbols.namesake, Wavelet, 0103 physical sciences, Curvelet, Cluster (physics), symbols, Spectral energy distribution, Planck, 010303 astronomy & astrophysics, Galaxy cluster, Parametric statistics
Abstract

Complementarily to X-ray observations, the thermal SZ effect is a powerful tool to probe the baryonic content of galaxy clusters from their core to their peripheries. While contaminations by astrophysical and instrumental backgrounds require us to scan the thermal SZ signal across various frequencies, the multi-scale nature of cluster morphologies require us to observe such objects at various angular resolutions. We developed component separation algorithms that take advantage of sparse representations to combine these heterogeneous pieces of information, separate the thermal SZ signal from its contaminants, detect and map the thermal SZ signal of galaxy clusters from nearby to more distant clusters of the Planck catalogue. Spatially weighted likelihoods allow us in particular to connect parametric fittings of the component Spectral Energy Distribution with wavelet and curvelet imaging, but also to combine signals registered with beams of various width. Such techniques already allow us to detect sub-structures in the peripheries of nearby clusters with Planck, and could be extended to observations performed at higher angular resolutions.

Published
2020

7. LoCuSS

Author

John E. Carlstrom, J. Démoclès, Alexis Finoguenov, Rossella Martino, Pasquale Mazzotta, Graham P. Smith, C. P. Haines, Arya Farahi, Daniel P. Marrone, August E. Evrard, Sarah L. Mulroy, H. Bourdin, Sean L. McGee, Nobuhiro Okabe, Zubair Abdulla, Christine O'Donnell, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Department of Physics, University of Helsinki, Department of Physics, and Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))

Subjects
galaxies: clusters: intracluster medium, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, HOT GAS, 01 natural sciences, Cosmology, gravitational lensing: weak, 0103 physical sciences, LINEAR-REGRESSION, Cosmology: observations, Galaxies: clusters: general, Galaxies: clusters: intracluster medium, Galaxies: stellar content, Gravitational lensing: weak, 010303 astronomy & astrophysics, Scaling, Galaxy cluster, Astrophysics::Galaxy Astrophysics, media_common, Physics, Settore FIS/05, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, CHANDRA SAMPLE, EVOLUTION, SIMULATIONS, K-BAND PROPERTIES, SCATTER, LUMINOSITY FUNCTION, Space and Planetary Science, Sky, galaxies: clusters: general, COSMOLOGY, cosmology: observations, galaxies: stellar content, SKY, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a simultaneous analysis of galaxy cluster scaling relations between weak-lensing mass and multiple cluster observables, across a wide range of wavelengths, that probe both gas and stellar content. Our new hierarchical Bayesian model simultaneously considers the selection variable alongside all other observables in order to explicitly model intrinsic property covariance and account for selection effects. We apply this method to a sample of 41 clusters at $0.15, Comment: 21 pages, 9 figures

Published
2019
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8. Exploring the multiphase medium in MKW 08: from the central active galaxy up to cluster scales

Author

Francesco Tombesi, A. Tümer, R. Serafinelli, Enise Nihal Ercan, H. Bourdin, and Massimo Gaspari

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Active galactic nucleus, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Galactic Center, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Galaxy, Corona (optical phenomenon), Settore FIS/05 - Astronomia e Astrofisica, Space and Planetary Science, Intracluster medium, 0103 physical sciences, Cluster (physics), Brightest cluster galaxy, Astrophysics - High Energy Astrophysical Phenomena, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics
Abstract

The study of the brightest cluster galaxy (BCG) coronae embedded in noncool core (NCC) galaxy clusters is crucial to understand the BCG's role in galaxy cluster evolution as well as the activation of the self-regulated cooling and heating mechanism in the central regions of galaxy clusters. We explore the X-ray properties of the intracluster medium (ICM) of the NCC galaxy cluster MKW 08 and the BCG corona, along with their interface region. With recent and deep archival Chandra observations, we study the BCG corona in detail, and with archival XMM-Newton observations, we investigate the implications of the central active galactic nuclei (AGN) on the BCG. We carry out imaging and spectral analyses of MKW 08 with archival XMM-Newton and Chandra X-ray observations. Our spectral analysis suggests the presence of a central AGN by a power-law with a photon index of $��$ ~ 1.8 at the core of its BCG. Although the ICM does not exhibit a cluster scale cool core, the BCG manifests itself as a mini cool core characterized by a cooling time as short as 64 Myr at r = 3 kpc centered at the galaxy. The isothermality of the BCG corona seems to favor mechanical feedback from the central AGN as the major source of gas heating. The gas pressure profile of this mini cool core suggests that the BCG coronal gas reaches pressure equilibrium with the hotter and less dense ICM inside an interface of nearly constant pressure, delimited by radii 4 < r < 10 kpc at the galactic center. As revealed by the presence of a metal enriched tail (Z ~ 0.5 - 0.9 Solar) extending up to 40 kpc, the BCG corona seems to be experiencing ram-pressure stripping by the surrounding ICM and/or interacting with a nearby galaxy, IC 1042.}, Accepted for publication in Astronomy & Astrophysics. 15 pages, 15 figures

Published
2019

9. The XMM Cluster Outskirts Project (X-COP): Thermodynamic properties of the Intracluster Medium out to $R_{200}$ in Abell 2319

Author

H. Bourdin, Stefano Ettori, Dominique Eckert, F. Gastaldello, Etienne Pointecouteau, G. Hurier, S. Molendi, Vittorio Ghirardini, Institut de recherche en astrophysique et planétologie ( IRAP ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ), Institut d'astrophysique spatiale ( IAS ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF-IASF Milano, Istituto Nazionale di Astrofisica (INAF), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Ghirardini, V., Ettori, S., Eckert, D., Molendi, S., Gastaldello, F., Pointecouteau, E., Hurier, G., and Bourdin, H.

Subjects
galaxies: clusters: general, galaxies: clusters: intracluster medium – X-rays, galaxies: clusters – intergalactic medium, Cosmology and Nongalactic Astrophysics (astro-ph.CO), galaxies: clusters: intracluster medium, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, law, Intracluster medium, 0103 physical sciences, ROSAT, Cluster (physics), Surface brightness, Total pressure, 010303 astronomy & astrophysics, Galaxy cluster, ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Settore FIS/05, Astronomy and Astrophysics, Astronomy and Astrophysic, X-rays: galaxies: cluster, Galaxy, Space and Planetary Science, X-rays: galaxies: clusters, intergalactic medium, Hydrostatic equilibrium, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the joint analysis of the X-ray and SZ signals in A2319, the galaxy cluster with the highest signal-to-noise ratio in Planck maps and that has been surveyed within our XMM Cluster Outskirts Project (X-COP). We recover the thermodynamical profiles by the geometrical deprojection of the X-ray surface brightness, of the SZ comptonization parameter, and an accurate and robust spectroscopic measurements of the temperature. We resolve the clumpiness of the density to be below 20 per cent demonstrating that most of this clumpiness originates from the ongoing merger and can be associated to large-scale inhomogeneities. This analysis is done in azimuthally averaged radial bins and in eight independent angular sectors, enabling us to study in details the azimuthal variance of the recovered properties. Given the exquisite quality of the X-ray and SZ datasets, we constrain at $R_{200}$ the total hydrostatic mass, modelled with a NFW profile, with very high precision ($M_{200} = 9.76 \pm 0.16^{stat.} \pm 0.31^{syst.} \times 10^{14} M_\odot$). We identify the ongoing merger and how it is affecting differently the gas properties in the resolved azimuthal sectors. We have several indications that the merger has injected a high level of non-thermal pressure in this system: the clumping free density profile is above the average profile obtained by stacking Rosat observations; the gas mass fraction exceeds the expected cosmic gas fraction beyond $R_{500}$; the pressure profile is flatter than the fit obtained by the Planck collaboration; the entropy profile is flatter than the mean one predicted from non-radiative simulations; the analysis in azimuthal sectors has revealed that these deviations occur in a preferred region of the cluster. All these tensions are resolved by requiring a relative support of about 40 per cent from non-thermal to the total pressure at $R_{200}$., Comment: 20 pages, 16 figures. Accepted for publication by A&A. Comments welcome

Published
2018
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10. Derivation of the Hubble parameter using galaxy clusters

Author

G. de Gasperis, H. Bourdin, Nicola Vittorio, Pasquale Mazzotta, and A. Kozmanyan

Subjects
Physics, History, Spiral galaxy, Observable, Type-cD galaxy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Computer Science Applications, Education, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, Elliptical galaxy, symbols, Interacting galaxy, Galaxy cluster, Microwave, Hubble's law
Abstract

In this work we describe a possible way to use X-ray and microwave observations of nearby galaxy clusters to derive the value of the Hubble constant, that parametrises the expansion rate of the Universe. We provide a brief introduction to the Sunyaev-Zel'dovich effect that allows to detect galaxy clusters at microwave frequencies, and the method to combine it with X-ray observables. We emphasize what kind of considerations should be done when applying the method on real data and study the effect of the geometry of the clusters on the final result.

Published
2017

11. Shapley Supercluster Survey: Ram-Pressure Stripping vs. Tidal Interactions in the Shapley Supercluster

Author

H. Bourdin, Chris P. Haines, Dominik Steinhauser, Pasquale Mazzotta, Michael A. Dopita, Paola Merluzzi, G. Busarello, ITA, USA, AUS, AUT, and CHL

Subjects
Physics, Luminous infrared galaxy, 010308 nuclear & particles physics, Astronomy, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Astrophysics - Astrophysics of Galaxies, Galaxy, Ram pressure, Peculiar galaxy, Settore FIS/05 - Astronomia e Astrofisica, Space and Planetary Science, Supercluster, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Elliptical galaxy, Disc, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics
Abstract

We present two new examples of galaxies undergoing transformation in the Shapley supercluster core. These low-mass (stellar mass from 0.4E10 to 1E10 Msun) galaxies are members of the two clusters SC-1329-313 (z=0.045) and SC-1327-312 (z=0.049). Integral-field spectroscopy complemented by imaging in ugriK bands and in Halpha narrow-band are used to disentangle the effects of tidal interaction (TI) and ram-pressure stripping (RPS). In both galaxies, SOS-61086 and SOS-90630, we observe one-sided extraplanar ionized gas extending respectively 30kpc and 41kpc in projection from their disks. The galaxies' gaseous disks are truncated and the kinematics of the stellar and gas components are decoupled, supporting the RPS scenario. The emission of the ionized gas extends in the direction of a possible companion for both galaxies suggesting a TI. The overall gas velocity field of SOS-61086 is reproduced by ad hoc N-body/hydrodynamical simulations of RPS acting almost face-on and starting about 250Myr ago, consistent with the age of the young stellar populations. A link between the observed gas stripping and the cluster-cluster interaction experienced by SC-1329-313 and A3562 is suggested. Simulations of ram pressure acting almost edge-on are able to fully reproduce the gas velocity field of SOS-90630, but cannot at the same time reproduce the extended tail of outflowing gas. This suggests that an additional disturbance from a TI is required. This study adds a piece of evidence that RPS may take place in different environments with different impacts and witnesses the possible effect of cluster-cluster merger on RPS., Comment: 27 pages, 28 figures, MNRAS accepted

Published
2016
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12. Planckintermediate results(Corrigendum)

Author

P. A. R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, F. Atrio Barandela, J. Aumont, C. Baccigalupi, A. Balbi, A. J. Banday, R. B. Barreiro, J. G. Bartlett, E. Battaner, K. Benabed, A. Benoît, J. P. Bernard, M. Bersanelli, R. Bhatia, I. Bikmaev, J. Bobin, H. Böhringer, A. Bonaldi, J. R. Bond, J. Borrill, F. R. Bouchet, H. Bourdin, M. L. Brown, R. Burenin, C. Burigana, P. Cabella, J. F. Cardoso, P. Carvalho, G. Castex, A. Catalano, L. Cayón, A. Chamballu, L. Y. Chiang, G. Chon, P. R. Christensen, E. Churazov, D. L. Clements, S. Colafrancesco, S. Colombi, L. P. L. Colombo, B. Comis, A. Coulais, B. P. Crill, F. Cuttaia, A. Da Silva, H. Dahle, L. Danese, R. J. Davis, P. de Bernardis, G. de Gasperis, G. de Zotti, J. Delabrouille, J. Démoclès, F. X. Désert, J. M. Diego, K. Dolag, H. Dole, S. Donzelli, O. Doré, U. Dörl, M. Douspis, X. Dupac, G. Efstathiou, T. A. Enßlin, H. K. Eriksen, F. Finelli, I. Flores Cacho, O. Forni, P. Fosalba, M. Frailis, E. Franceschi, M. Frommert, S. Galeotta, K. Ganga, R. T. Génova Santos, M. Giard, Y. Giraud Héraud, J. González Nuevo, K. M. Górski, GREGORIO, ANNA, A. Gruppuso, F. K. Hansen, D. Harrison, A. Hempel, S. Henrot Versillé, C. Hernández Monteagudo, D. Herranz, S. R. Hildebrandt, E. Hivon, M. Hobson, W. A. Holmes, G. Hurier, T. R. Jaffe, A. H. Jaffe, T. Jagemann, W. C. Jones, M. Juvela, E. Keihänen, I. Khamitov, T. S. Kisner, R. Kneissl, J. Knoche, L. Knox, M. Kunz, H. Kurki Suonio, G. Lagache, A. Lähteenmäki, J. M. Lamarre, A. Lasenby, C. R. Lawrence, M. Le Jeune, R. Leonardi, A. Liddle, P. B. Lilje, M. López Caniego, G. Luzzi, J. F. Macías Pérez, D. Maino, N. Mandolesi, M. Maris, F. Marleau, D. J. Marshall, E. Martínez González, S. Masi, M. Massardi, S. Matarrese, P. Mazzotta, S. Mei, A. Melchiorri, J. B. Melin, L. Mendes, A. Mennella, S. Mitra, M. A. Miville Deschênes, A. Moneti, L. Montier, G. Morgante, D. Mortlock, D. Munshi, J. A. Murphy, P. Naselsky, F. Nati, P. Natoli, H. U. Nørgaard Nielsen, F. Noviello, D. Novikov, I. Novikov, S. Osborne, F. Pajot, D. Paoletti, F. Pasian, G. Patanchon, O. Perdereau, L. Perotto, F. Perrotta, F. Piacentini, M. Piat, E. Pierpaoli, R. Piffaretti, S. Plaszczynski, E. Pointecouteau, G. Polenta, N. Ponthieu, L. Popa, T. Poutanen, G. W. Pratt, S. Prunet, J. L. Puget, J. P. Rachen, W. T. Reach, R. Rebolo, M. Reinecke, M. Remazeilles, C. Renault, S. Ricciardi, T. Riller, I. Ristorcelli, G. Rocha, M. Roman, C. Rosset, M. Rossetti, J. A. Rubiño Martín, B. Rusholme, M. Sandri, G. Savini, D. Scott, G. F. Smoot, J. L. Starck, R. Sudiwala, R. Sunyaev, D. Sutton, A. S. Suur Uski, J. F. Sygnet, J. A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, J. Tuovinen, L. Valenziano, B. Van Tent, J. Varis, P. Vielva, F. Villa, N. Vittorio, L. A. Wade, B. D. Wandelt, N. Welikala, S. D. M. White, M. White, D. Yvon, A. Zacchei, A. Zonca, BORGANI, STEFANO, P. A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, K., Benabed, A., Benoît, J. P., Bernard, M., Bersanelli, R., Bhatia, I., Bikmaev, J., Bobin, H., Böhringer, A., Bonaldi, J. R., Bond, Borgani, Stefano, J., Borrill, F. R., Bouchet, H., Bourdin, M. L., Brown, R., Burenin, C., Burigana, P., Cabella, J. F., Cardoso, P., Carvalho, G., Castex, A., Catalano, L., Cayón, A., Chamballu, L. Y., Chiang, G., Chon, P. R., Christensen, E., Churazov, D. L., Clement, S., Colafrancesco, S., Colombi, L. P. L., Colombo, B., Comi, A., Coulai, B. P., Crill, F., Cuttaia, A., Da Silva, H., Dahle, L., Danese, R. J., Davi, P., de Bernardi, G., de Gasperi, G., de Zotti, J., Delabrouille, J., Démoclè, F. X., Désert, J. M., Diego, K., Dolag, H., Dole, S., Donzelli, O., Doré, U., Dörl, M., Douspi, X., Dupac, G., Efstathiou, T. A., Enßlin, H. K., Eriksen, F., Finelli, I., Flores Cacho, O., Forni, P., Fosalba, M., Fraili, E., Franceschi, M., Frommert, S., Galeotta, K., Ganga, R. T., Génova Santo, M., Giard, Y., Giraud Héraud, J., González Nuevo, K. M., Górski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, A., Hempel, S., Henrot Versillé, C., Hernández Monteagudo, D., Herranz, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, G., Hurier, T. R., Jaffe, A. H., Jaffe, T., Jagemann, W. C., Jone, M., Juvela, E., Keihänen, I., Khamitov, T. S., Kisner, R., Kneissl, J., Knoche, L., Knox, M., Kunz, H., Kurki Suonio, G., Lagache, A., Lähteenmäki, J. M., Lamarre, A., Lasenby, C. R., Lawrence, M., Le Jeune, R., Leonardi, A., Liddle, P. B., Lilje, M., López Caniego, G., Luzzi, J. F., Macías Pérez, D., Maino, N., Mandolesi, M., Mari, F., Marleau, D. J., Marshall, E., Martínez González, S., Masi, M., Massardi, S., Matarrese, P., Mazzotta, S., Mei, A., Melchiorri, J. B., Melin, L., Mende, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Mortlock, D., Munshi, J. A., Murphy, P., Naselsky, F., Nati, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, F., Pajot, D., Paoletti, F., Pasian, G., Patanchon, O., Perdereau, L., Perotto, F., Perrotta, F., Piacentini, M., Piat, E., Pierpaoli, R., Piffaretti, S., Plaszczynski, E., Pointecouteau, G., Polenta, N., Ponthieu, L., Popa, T., Poutanen, G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, W. T., Reach, R., Rebolo, M., Reinecke, M., Remazeille, C., Renault, S., Ricciardi, T., Riller, I., Ristorcelli, G., Rocha, M., Roman, C., Rosset, M., Rossetti, J. A., Rubiño Martín, B., Rusholme, M., Sandri, G., Savini, D., Scott, G. F., Smoot, J. L., Starck, R., Sudiwala, R., Sunyaev, D., Sutton, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, M., Tristram, J., Tuovinen, L., Valenziano, B., Van Tent, J., Vari, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Welikala, S. D. M., White, M., White, D., Yvon, A., Zacchei, and A., Zonca

Subjects
galaxies: clusters: intracluster medium, clusters: intracluster medium [galaxies], galaxies: clusters: general, general [X-rays], cosmology: observations, clusters: general [galaxies], submillimeter: general, general [submillimeter], X-rays: general, errata, addenda, observation [cosmology]
Published
2013

13. A performance comparison between graph and hypergraph topologies for passive star WDM lightwave networks

Author

H. Bourdin, K. Marcus, and Afonso Ferreira

Subjects
Hypergraph, business.industry, Computer science, Node (networking), General Engineering, Throughput, Star (graph theory), Network topology, Multiplexing, Frequency-division multiplexing, Computer Science::Networking and Internet Architecture, Graph (abstract data type), business, Computer Science::Information Theory, Computer network
Abstract

Wavelength division multiplexing (WDM) allows the huge bandwidth of optical fiber to be divided into several high-speed channels in optical passive star based networks. For such processor networks, most of the proposed architectures for interconnecting nodes are based on graph topologies. Recently, topologies based on the hypergraph theory have emerged, motivated by the observation that each multiplexed channel can actually be seen as a logical resource shared among many processors, and not only between two of them. In this paper, we show that these hypergraph passive star WDM lightwave networks present many advantages with respect to graph-based ones, in terms of simulated packet delivery time, average number of hops, link utilization, and throughput. Furthermore, they use only a constant number of transceivers per node, and a sub-linear number of multiplexed channels.

Published
1998
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14. Shock heating of the merging galaxy cluster A521

Author

Maxim Markevitch, Gianfranco Brunetti, Giacintucci, Pasquale Mazzotta, and H. Bourdin

Subjects
Physics, Brightness, Spectral index, galaxies: clusters: intracluster medium, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, galaxies: clusters: individual: A521, FOS: Physical sciences, Astronomy and Astrophysics, Cosmic ray, shock waves, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Shock (mechanics), Cold front, Settore FIS/05 - Astronomia e Astrofisica, Radio halo, galaxies: clusters: general, Space and Planetary Science, Cluster (physics), Galaxy cluster, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, galaxies: clusters: general, galaxies: clusters: individual: A521, galaxies: clusters: intracluster medium, shock waves
Abstract

A521 is an interacting galaxy cluster located at z=0.247, hosting a low frequency radio halo connected to an eastern radio relic. Previous Chandra observations hinted at the presence of an X-ray brightness edge at the position of the relic, which may be a shock front. We analyze a deep observation of A521 recently performed with XMM-Newton in order to probe the cluster structure up to the outermost regions covered by the radio emission. The cluster atmosphere exhibits various brightness and temperature anisotropies. In particular, two cluster cores appear to be separated by two cold fronts. We find two shock fronts, one that was suggested by Chandra and that is propagating to the east, and another to the southwestern cluster outskirt. The two main interacting clusters appear to be separated by a shock heated region, which exhibits a spatial correlation with the radio halo. The outer edge of the radio relic coincides spatially with a shock front, suggesting this shock is responsible for the generation of cosmic ray electrons in the relic. The propagation direction and Mach number of the shock front derived from the gas density jump, M = 2.4 +/- 0.2, are consistent with expectations from the radio spectral index, under the assumption of Fermi I acceleration mechanism.

Published
2013
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15. Planck Intermediate Results II: Comparison of Sunyaev-Zeldovich measurements from Planck and from the Arcminute Microkelvin Imager for 11 galaxy clusters

Author

P. A. R. Ade (82), N. Aghanim (56), M. Arnaud (72), M. Ashdown (69), 6, J. Aumont (56), C. Baccigalupi (81), A. Balbi (35), A. J. Banday (90, R. B. Barreiro (65), E. Battaner (92), R. Battye (68), K. Benabed (57, 89), A. Benoît (54), J.-P. Bernard (9), M. Bersanelli (32, 48), R. Bhatia (7), I. Bikmaev (20, H. Böhringer (77), A. Bonaldi (68), J. R. Bond (8), J. Borrill (14, 85), F. R. Bouchet (57, H. Bourdin (35), M. L. Brown (68), M. Bucher (1), R. Burenin (83), C. Burigana (47, 34), R. C. Butler (47), P. Cabella (36), P. Carvalho (6), A. Catalano (73, 71), L. Cayón (29), A. Chamballu (52), R.-R. Chary (53), L.-Y. Chiang (61), G. Chon (77), D. L. Clements (52), S. Colafrancesco (44), S. Colombi (57, A. Coulais (71), B. P. Crill (67, 79), F. Cuttaia (47), A. Da Silva (12), H. Dahle (63), R. D. Davies (68), R. J. Davis (68), P. de Bernardis (31), G. de Gasperis (35), A. de Rosa (47), G. de Zotti (43, 81), J. Delabrouille (1), J. Démoclès (72), C. Dickinson (68), J. M. Diego (65), K. Dolag (91, 76), H. Dole (56, 55), S. Donzelli (48), O. Doré (67, 10), M. Douspis (56), X. Dupac (40), G. Efstathiou (62), T. A. Enßlin (76), H. K. Eriksen (63), F. Feroz (6), F. Finelli (47), I. Flores-Cacho (9, 90), O. Forni (90, P. Fosalba (58), M. Frailis (45), E. Franceschi (47), S. Fromenteau (1, 56), S. Galeotta (45), K. Ganga (1), R. T. Génova-Santos (64), M. Giard (90, Y. Giraud-Héraud (1), J. González-Nuevo (65, K. M. Górski (67, 94), K. J. B. Grainge (6, 69), A. Gregorio (33, 45), A. Gruppuso (47), F. K. Hansen (63), D. Harrison (62, S. Henrot-Versillé (70), C. Hernández-Monteagudo (13, D. Herranz (65), S. R. Hildebrandt (10), E. Hivon (57, M. Hobson (6), W. A. Holmes (67), K. M. Huffenberger (93), G. Hurier (73), N. Hurley-Walker (6), T. Jagemann (40), M. Juvela (25), E. Keihänen (25), I. Khamitov (88), R. Kneissl (39, J. Knoche (76), M. Kunz (18, H. Kurki-Suonio (25, 42), G. Lagache (56), J.-M. Lamarre (71), A. Lasenby (6, C. R. Lawrence (67), M. Le Jeune (1), S. Leach (81), R. Leonardi (40), A. Liddle (24), P. B. Lilje (63, 11), M. Linden-Vørnle (17), M. López-Caniego (65), G. Luzzi (70), J. F. Macías-Pérez (73), C. J. MacTavish (69), D. Maino (32, N. Mandolesi (47, M. Maris (45), F. Marleau (60), D. J. Marshall (72), E. Martínez-González (65), S. Masi (31), M. Massardi (46), S. Matarrese (30), F. Matthai (76), P. Mazzotta (35), P. R. Meinhold (27), A. Melchiorri (31, 49), J.-B. Melin (16), L. Mendes (40), A. Mennella (32, S. Mitra (51, 67), M.-A. Miville-Deschênes (56, L. Montier (90, G. Morgante (47), D. Munshi (82), P. Naselsky (78, 37), P. Natoli (34, 4, 47), H. U. Nørgaard-Nielsen (17), F. Noviello (68), D. Novikov (52), I. Novikov (78), M. Olamaie (6), S. Osborne (87), F. Pajot (56), D. Paoletti (47), F. Pasian (45), G. Patanchon (1), T. J. Pearson (10, 53), O. Perdereau (70), Y. C. Perrott (6), F. Perrotta (81), F. Piacentini (31), E. Pierpaoli (23), P. Platania (66), E. Pointecouteau (90, G. Polenta (4, 44), L. Popa (59), T. Poutanen (42, G. W. Pratt (72), J.-L. Puget (56), J. P. Rachen (21, R. Rebolo (64, 38), M. Reinecke (76), M. Remazeilles (56, C. Renault (73), S. Ricciardi (47), I. Ristorcelli (90, G. Rocha (67, C. Rodríguez-Gonzálvez (6), C. Rosset (1), M. Rossetti (32, J. A. Rubiño-Martín (64, C. Rumsey (6), B. Rusholme (53), M. Sandri (47), R. D. E. Saunders (6, G. Savini (80), M. P. Schammel (6), D. Scott (22), T. W. Shimwell (6), G. F. Smoot (26, J.-L. Starck (72), F. Stivoli (50), V. Stolyarov (6, 86), R. Sudiwala (82), R. Sunyaev (76, 84), D. Sutton (62, A.-S. Suur-Uski (25, J.-F. Sygnet (57), J. A. Tauber (41), L. Terenzi (47), L. Toffolatti (19, 65), M. Tomasi (48), M. Tristram (70), L. Valenziano (47), B. Van Tent (74), P. Vielva (65), F. Villa (47), N. Vittorio (35), L. A. Wade (67), B. D. Wandelt (57, 28), D. Yvon (16), A. Zacchei (45), A. Zonca (27), European Space Agency, Centre National D'Etudes Spatiales (France), Centre National de la Recherche Scientifique (France), Agenzia Spaziale Italiana, Consiglio Nazionale delle Ricerche, Istituto Nazionale di Fisica Nucleare, National Aeronautics and Space Administration (US), Department of Energy (US), Science and Technology Facilities Council (UK), UK Space Agency, Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia e Innovación (España), Junta de Andalucía, Academy of Finland, Ministry of Education and Culture (Finland), German Centre for Air and Space Travel, Max Planck Society, National Space Institute (Denmark), Research Council of Norway, Science Foundation Ireland, Fundação para a Ciência e a Tecnologia (Portugal), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), PLANCK, Planck, AMI Collaborations: N., Aghanim55, M., Arnaud70, M., Ashdown67, J., Aumont55, C., Baccigalupi79, A., Balbi35, A. J., Banday88, R. B., Barreiro63, E., Battaner90, R., Battye66, K., Benabed56, A., Benoˆıt54, J. P., Bernard8, M., Bersanelli32, R., Bhatia6, I., Bikmaev20, H., Bo ̈hringer75, A., Bonaldi66, J. R., Bond7, J., Borrill13, F. R., Bouchet56, H., Bourdin35, M. L., Brown66⋆, M., Bucher1, R., Burenin81, C., Burigana47, R. C., Butler47, P., Cabella36, P., Carvalho5, A., Catalano71, L., Cayo ́n26, A., Chamballu52, R. R., Chary53, L. Y., Chiang59, G., Chon75, D. L., Clements52, S., Colafrancesco44, S., Colombi56, B. P., Crill65, F., Cuttaia47, A., Da Silva11, H., Dahle61, R. D., Davies66, R. J., Davis66, P., de Bernardis31, G., de Gasperis35, A., de Rosa47, G., de Zotti43, J., Delabrouille1, J., De ́mocle`s70, C., Dickinson66, J. M., Diego63, K., Dolag89, H., Dole55, S., Donzelli48, O., Dore ́65, M., Douspis55, X., Dupac40, T. A., Enßlin74, H. K., Eriksen61, F., Feroz5, F., Finelli47, I., Flores Cacho8, O., Forni88, P., Fosalba57, M., Frailis45, E., Franceschi47, S., Fromenteau1, S., Galeotta45, K., Ganga1, R. T., Ge ́nova Santos62, M., Giard88, Y., Giraud He ́raud1, J., Gonza ́lez Nuevo63, K. M., Go ́rski65, K. J. B., Grainge5, Gregorio, Anna, A., Gruppuso47, F. K., Hansen61, D., Harrison60, S., Henrot Versille ́68, C., Herna ́ndez Monteagudo12, D., Herranz63, S. R., Hildebrandt9, E., Hivon56, M., Hobson5, W. A., Holmes65, K. M., Huffenberger91, G., Hurier71, N., Hurley Walker5, T., Jagemann40, M., Juvela25, E., Keiha ̈nen25, I., Khamitov86, R., Kneissl39, J., Knoche74, M., Kunz17, H., Kurki Suonio25, G., Lagache55, J. M., Lamarre69, A., Lasenby5, C. R., Lawrence65, M., Le Jeune1, S., Leach79, R., Leonardi40, A., Liddle24, P. B., Lilje61, M., Linden Vørnle16, M., Lo ́pez Caniego63, G., Luzzi68, J. F., Mac ́ıas Pe ́rez71, C. J., Mactavish67, D., Maino32, N., Mandolesi47, M., Maris45, F., Marleau19, D. J., Marshall88, E., Mart ́ınez Gonza ́lez63, S., Masi31, M., Massardi46, S., Matarrese30, F., Matthai74, P., Mazzotta35, A., Melchiorri31, J. B., Melin15, L., Mendes40, A., Mennella32, S., Mitra51, M. A., Miville Descheˆnes55, L., Montier88, G., Morgante47, D., Munshi80, P., Naselsky76, P., Natoli34, 4, 47, F., Noviello66, M., Olamaie5, S., Osborne85, F., Pajot55, D., Paoletti47, F., Pasian45, G., Patanchon1, T. J., Pearson9, O., Perdereau68, Y. C., Perrott5, F., Perrotta79, F., Piacentini31, E., Pierpaoli23, P., Platania64, E., Pointecouteau88, G., Polenta4, L., Popa58, T., Poutanen42, 25, 2, G. W., Pratt70, J. L., Puget55, J. P., Rachen21, R., Rebolo62, 14, 38, M., Reinecke74, M., Remazeilles55, C., Renault71, S., Ricciardi47, I., Ristorcelli88, G., Rocha65, C., Rodr ́ıguez Gonza ́lvez5, C., Rosset1, M., Rossetti32, J. A., Rubin ̃o Mart ́ın62, B., Rusholme53, R. D. E., Saunders5, G., Savini78, M. P., Schammel5, D., Scott22, T. W., Shimwell5, G. F., Smoot27, 73, 1, J. L., Starck70, F., Stivoli50, V., Stolyarov5, 67, 84, R., Sunyaev74, D., Sutton60, A. S., Suur Uski25, J. F., Sygnet56, J. A., Tauber41, L., Terenzi47, L., Toffolatti18, M., Tomasi48, M., Tristram68, L., Valenziano47, B., Van Tent72, P., Vielva63, F., Villa47, N., Vittorio35, L. A., Wade65, B. D., Wandelt56, 87, 29, D., Yvon15, A., Zacchei45, A., Zonca28, Universidad de Cantabria, Department of Physics, Helsinki Institute of Physics, HELFA - Hélium : du fondamental aux applications, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Hélium : du fondamental aux applications (NEEL - HELFA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI)

Subjects
galaxies: clusters: intracluster medium, galaxies: clusters: general, cosmology: observations, cosmic background radiation, x-rays: galaxies: clusters, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Arcminute Microkelvin Imager, Astrophysics, clusters: general [Galaxies], Parameter space, Cosmic background radiation, 01 natural sciences, 7. Clean energy, Angular diameter, galaxies, observations − Galaxies: cluster: general − Galaxies: clusters: intracluster medium − Cosmic background radiation [Cosmology], observations [Cosmology], 010303 astronomy & astrophysics, Physics, Cosmology: observations, Radius, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, symbols, Cluster sampling, Galaxies: clusters: intracluster medium, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, education, Cosmology: observations − Galaxies: cluster: general − Galaxies: clusters: intracluster medium − Cosmic background radiation, FOS: Physical sciences, clusters: intracluster medium [Galaxies], Astrophysics::Cosmology and Extragalactic Astrophysics, cosmology observations galaxies, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, Cluster (physics), Galaxies: clusters: general, X-rays: galaxies: clusters, Planck, Galaxy cluster, Astrophysics::Galaxy Astrophysics, X rays, 010308 nuclear & particles physics, Astronomy and Astrophysics, Cosmology and Extragalactic Astrophysics, 115 Astronomy, Space science, Galaxies, Space and Planetary Science, astrophysics: cosmology and extragalactic astrophysics, galaxies: clusters [X-rays]
Abstract

A comparison is presented of Sunyaev-Zeldovich measurements for 11 galaxy clusters as obtained by Planck and by the ground-based interferometer, the Arcminute Microkelvin Imager. Assuming a universal spherically-symmetric Generalised Navarro, Frenk and White (GNFW) model for the cluster gas pressure profile, we jointly constrain the integrated Compton-Y parameter (Y 500) and the scale radius (θ500) of each cluster. Our resulting constraints in the Y500-θ500 2D parameter space derived from the two instruments overlap significantly for eight of the clusters, although, overall, there is a tendency for AMI to find the Sunyaev-Zeldovich signal to be smaller in angular size and fainter than Planck. Significant discrepancies exist for the three remaining clusters in the sample, namely A1413, A1914, and the newly-discovered Planck cluster PLCKESZ G139.59+24.18. The robustness of the analysis of both the Planck and AMI data is demonstrated through the use of detailed simulations, which also discount confusion from residual point (radio) sources and from diffuse astrophysical foregrounds as possible explanations for the discrepancies found. For a subset of our cluster sample, we have investigated the dependence of our results on the assumed pressure profile by repeating the analysis adopting the best-fitting GNFW profile shape which best matches X-ray observations. Adopting the best-fitting profile shape from the X-ray data does not, in general, resolve the discrepancies found in this subset of five clusters. Though based on a small sample, our results suggest that the adopted GNFW model may not be sufficiently flexible to describe clusters universally. © ESO, 2013., The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and DEISA (EU).

Published
2012
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16. A 2163: Merger events in the hottest Abell galaxy cluster. I. Dynamical analysis from optical data

Author

H. Bourdin, G. Soucail, S. Maurogordato, G. W. Pratt, M. Arnaud, G. Mars, C. Benoist, J. L. Sauvageot, A. Cappi, Chiara Ferrari, INAF - Osservatorio Astronomico di Bologna (OABO), Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astronomico di Capodimonte (OAC), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), AUTRES, Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS), Institut de théorie des phénomènes physiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de la Cote d'Azur, Département CERGA, Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA), Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Département Fresnel (FRESNEL), Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Gemini (LG), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Louis Pasteur - Strasbourg 1 (ULP), Université Louis Pasteur - Strasbourg I, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Changement technique, apprentissage et coordination dans l'agriculture et l'agroalimentaire (UMR INNOVATION), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM), laboratoire d'études radioécologiques continentales et de la Méditerranée base IFREMER, Institut de protection et de sûreté nucléaire (base IFREMER) - La Seyne-sur-mer, Unité de Biotechnologie, Biocatalyse et Biorégulation (U3B), Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'information spécialisée (CRIS), Université Paris Nanterre (UPN), DEA, DSM, SAp, Max-Planck-Institut für Extraterrestrische Physik (MPE), Observatoire de la Côte d'Azur (OCA), Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique (ex SAP) (DAP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut de Protection et Sûreté Nucléaire (IPSN), Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Cluster (physics), Spectroscopy, 010303 astronomy & astrophysics, galaxies clusters: individual: A 2163, Galaxy cluster, Astrophysics::Galaxy Astrophysics, galaxies: kinematics and dynamics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Velocity gradient, Astrophysics (astro-ph), Velocity dispersion, Astronomy and Astrophysics, Galaxy, Redshift, Bimodality, Space and Planetary Science, galaxies: clusters: general
Abstract

We present a detailed optical analysis of the galaxy cluster A2163 based on new multicolor wide field imaging and medium-to-high resolution (R~2000) spectroscopy. While X-ray observations have revealed that merging processes are present in this cluster, the merging scenario is complex and not well-defined. We undertook a complementary optical analysis, aiming to understand the dynamics of the system, to add constraints to the merging scenario and to test its effect on the properties of galaxies. We provide a spectroscopic catalog of 512 new objects, where 361 galaxies are identified as cluster members. We derived estimates of the mean redshift and velocity dispersion: z= 0.2005 +/- 0.0003 and 1434 +/- 60 km/s, and performed a detailed dynamical analysis of unprecedented accuracy. We detected multiple evidences of merging events: i) strong subclustering in the galaxy density distribution, showing a main central component A2163-A, a northern one A2163-B, visible both in optical and in X-ray, and other substructures detected in optical, ii) bimodality in the density distribution for A2163-A, strong segregation between gaz and galaxies, and between galaxies of different luminosities, iii) low-density structures oriented along specific axes: mainly the EW direction, and the NS one, embedding the main substructures, iv) bimodality in the velocity distribution and a velocity gradient (~1250 km/s) along the NE/SW axis of the cluster. A2163 is exceptionally massive, with Mvir = 3.8 +/- 0.4 10**15 Msol/h70. Our analysis supports a scenario in which A2163-A has undergone a recent (t ~ 0.5 Gyr) merger along a a NE/SW (or E--W) axis, and A2163-B is connected to the main complex, probably infalling on A2163-A. (abridged), Comment: 23 pages, 22 figures, accepted for publication in Astronomy and Astrophysics

Published
2008
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17. Planck intermediate results: VIII. Filaments between interacting clusters

Author

Collaboration, P, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bikmaev, I, Bohringer, H, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Bourdin, H, Burenin, R, Burigana, C, Cabella, P, Cardoso, J, Castex, G, Catalano, A, Cayon, L, Chamballu, A, Chary, R, Chiang, L, Chon, G, Christensen, P, Clements, D, Colafrancesco, S, Colombo, L, Comis, B, Coulais, A, Crill, B, Cuttaia, F, Da Silva, A, Dahle, H, Danese, L, Davis, R, De Bernardis, P, De Gasperis, G, De Zotti, G, Delabrouille, J, Democles, J, Desert, F, Diego, J, Dolag, K, Dole, H, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Eriksen, H, Finelli, F, Flores-Cacho, I, Forni, O, Frailis, M, Franceschi, E, Frommert, M, Galeotta, S, Ganga, K, Genova-Santos, R, Giard, M, Gilfanov, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Hempel, A, Henrot-Versille, S, Hernandez-Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hurier, G, Jaffe, T, Jaffe, A, Jagemann, T, Jones, W, Juvela, M, Khamitov, I, Kisner, T, Kneissl, R, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lawrence, C, Le Jeune, M, Leonardi, R, Lilje, P, Linden-Vørnle, M, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, Luzzi, G, Macias-Perez, J, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marleau, F, Marshall, D, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Matthai, F, Mazzotta, P, Mei, S, Melchiorri, A, Melin, J, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Nørgaard-Nielsen, H, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pajot, F, Paoletti, D, Pasian, F, Patanchon, G, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Piffaretti, R, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Roman, M, Rosset, C, Rossetti, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Savini, G, Schaefer, B, Scott, D, Smoot, G, Starck, J, Sudiwala, R, Sunyaev, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Valenziano, L, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Welikala, N, White, S, Yvon, D, Zacchei, A, Zonca, A, Planck Collaboration, P.A.R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, C. Baccigalupi, A. Balbi, A.J. Banday, R.B. Barreiro, J.G. Bartlett, E. Battaner, K. Benabed, A. Benoit, J.P. Bernard, M. Bersanelli, R. Bhatia, I. Bikmaev, H. Bohringer, A. Bonaldi, J.R. Bond, J. Borrill, F.R. Bouchet, H. Bourdin, R. Burenin, C. Burigana, P. Cabella, J.F. Cardoso, G. Castex, A. Catalano, L. Cayon, A. Chamballu, R.R. Chary, L.Y. Chiang, G. Chon, P.R. Christensen, D.L. Clements, S. Colafrancesco, L.P.L. Colombo, Barbara Comis, A. Coulais, B.P. Crill, F. Cuttaia, A. Da Silva, H. Dahle, L. Danese, R.J. Davis, Paolo De Bernardis, G. De Gasperis, G. De Zotti, J. Delabrouille, J. Democles, F.X. Desert, J.M. Diego, K. Dolag, H. Dole, S. Donzelli, O. Dore, U. Dorl, M. Douspis, X. Dupac, G. Efstathiou, T.A. Ensslin, H.K. Eriksen, F. Finelli, I. Flores-Cacho, O. Forni, M. Frailis, E. Franceschi, M. Frommert, S. Galeotta, K. Ganga, R.T. Genova-Santos, M. Giard, M. Gilfanov, Y. Giraud-Heraud, J. Gonzalez-Nuevo, K.M. Gorski, A. Gregorio, A. Gruppuso, F.K. Hansen, D. Harrison, A. Hempel, S. Henrot-Versille, C. Hernandez-Monteagudo, D. Herranz, S.R. Hildebrandt, E. Hivon, M. Hobson, W.A. Holmes, W. Hovest, G. Hurier, T.R. Jaffe, A.H. Jaffe, T. Jagemann, W.C. Jones, M. Juvela, I. Khamitov, T.S. Kisner, R. Kneissl, J. Knoche, L. Knox, M. Kunz, H. Kurki-Suonio, G. Lagache, J.M. Lamarre, A. Lasenby, C.R. Lawrence, M. Le Jeune, R. Leonardi, P.B. Lilje, M. Linden-Vørnle, M. Linden-Vornle, M. Lopez-Caniego, P.M. Lubin, Gemma Luzzi, J.F. Macias-Perez, B. Maffei, D. Maino, N. Mandolesi, M. Maris, F. Marleau, D.J. Marshall, E. Martinez-Gonzalez, Silvia Masi, M. Massardi, S. Matarrese, F. Matthai, P. Mazzotta, S. Mei, Alessandro Melchiorri, J.B. Melin, L. Mendes, A. Mennella, S. Mitra, M.A. Miville-Deschenes, A. Moneti, L. Montier, G. Morgante, D. Munshi, J.A. Murphy, P. Naselsky, Federico Nati, P. Natoli, H.U. Nørgaard-Nielsen, H.U. Norgaard-Nielsen, F. Noviello, D. Novikov, I. Novikov, S. Osborne, F. Pajot, D. Paoletti, F. Pasian, G. Patanchon, O. Perdereau, L. Perotto, F. Perrotta, Francesco Piacentini, M. Piat, E. Pierpaoli, R. Piffaretti, S. Plaszczynski, E. Pointecouteau, Gianluca Polenta, N. Ponthieu, L. Popa, T. Poutanen, G.W. Pratt, S. Prunet, J.L. Puget, J.P. Rachen, R. Rebolo, M. Reinecke, M. Remazeilles, C. Renault, S. Ricciardi, T. Riller, I. Ristorcelli, G. Rocha, M. Roman, C. Rosset, M. Rossetti, J.A. Rubino-Martin, B. Rusholme, M. Sandri, Giorgio Savini, B.M. Schaefer, D. Scott, G.F. Smoot, J.L. Starck, R. Sudiwala, R. Sunyaev, D. Sutton, A.S. Suur-Uski, J.F. Sygnet, J.A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, L. Valenziano, B. Van Tent, P. Vielva, F. Villa, N. Vittorio, L.A. Wade, B.D. Wandelt, N. Welikala, S.D.M. White, D. Yvon, A. Zacchei, A. Zonca, Collaboration, P, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bikmaev, I, Bohringer, H, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Bourdin, H, Burenin, R, Burigana, C, Cabella, P, Cardoso, J, Castex, G, Catalano, A, Cayon, L, Chamballu, A, Chary, R, Chiang, L, Chon, G, Christensen, P, Clements, D, Colafrancesco, S, Colombo, L, Comis, B, Coulais, A, Crill, B, Cuttaia, F, Da Silva, A, Dahle, H, Danese, L, Davis, R, De Bernardis, P, De Gasperis, G, De Zotti, G, Delabrouille, J, Democles, J, Desert, F, Diego, J, Dolag, K, Dole, H, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Eriksen, H, Finelli, F, Flores-Cacho, I, Forni, O, Frailis, M, Franceschi, E, Frommert, M, Galeotta, S, Ganga, K, Genova-Santos, R, Giard, M, Gilfanov, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Hempel, A, Henrot-Versille, S, Hernandez-Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hurier, G, Jaffe, T, Jaffe, A, Jagemann, T, Jones, W, Juvela, M, Khamitov, I, Kisner, T, Kneissl, R, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lawrence, C, Le Jeune, M, Leonardi, R, Lilje, P, Linden-Vørnle, M, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, Luzzi, G, Macias-Perez, J, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marleau, F, Marshall, D, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Matthai, F, Mazzotta, P, Mei, S, Melchiorri, A, Melin, J, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Nørgaard-Nielsen, H, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pajot, F, Paoletti, D, Pasian, F, Patanchon, G, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Piffaretti, R, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Roman, M, Rosset, C, Rossetti, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Savini, G, Schaefer, B, Scott, D, Smoot, G, Starck, J, Sudiwala, R, Sunyaev, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Valenziano, L, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Welikala, N, White, S, Yvon, D, Zacchei, A, Zonca, A, Planck Collaboration, P.A.R. Ade, N. Aghanim, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, C. Baccigalupi, A. Balbi, A.J. Banday, R.B. Barreiro, J.G. Bartlett, E. Battaner, K. Benabed, A. Benoit, J.P. Bernard, M. Bersanelli, R. Bhatia, I. Bikmaev, H. Bohringer, A. Bonaldi, J.R. Bond, J. Borrill, F.R. Bouchet, H. Bourdin, R. Burenin, C. Burigana, P. Cabella, J.F. Cardoso, G. Castex, A. Catalano, L. Cayon, A. Chamballu, R.R. Chary, L.Y. Chiang, G. Chon, P.R. Christensen, D.L. Clements, S. Colafrancesco, L.P.L. Colombo, Barbara Comis, A. Coulais, B.P. Crill, F. Cuttaia, A. Da Silva, H. Dahle, L. Danese, R.J. Davis, Paolo De Bernardis, G. De Gasperis, G. De Zotti, J. Delabrouille, J. Democles, F.X. Desert, J.M. Diego, K. Dolag, H. Dole, S. Donzelli, O. Dore, U. Dorl, M. Douspis, X. Dupac, G. Efstathiou, T.A. Ensslin, H.K. Eriksen, F. Finelli, I. Flores-Cacho, O. Forni, M. Frailis, E. Franceschi, M. Frommert, S. Galeotta, K. Ganga, R.T. Genova-Santos, M. Giard, M. Gilfanov, Y. Giraud-Heraud, J. Gonzalez-Nuevo, K.M. Gorski, A. Gregorio, A. Gruppuso, F.K. Hansen, D. Harrison, A. Hempel, S. Henrot-Versille, C. Hernandez-Monteagudo, D. Herranz, S.R. Hildebrandt, E. Hivon, M. Hobson, W.A. Holmes, W. Hovest, G. Hurier, T.R. Jaffe, A.H. Jaffe, T. Jagemann, W.C. Jones, M. Juvela, I. Khamitov, T.S. Kisner, R. Kneissl, J. Knoche, L. Knox, M. Kunz, H. Kurki-Suonio, G. Lagache, J.M. Lamarre, A. Lasenby, C.R. Lawrence, M. Le Jeune, R. Leonardi, P.B. Lilje, M. Linden-Vørnle, M. Linden-Vornle, M. Lopez-Caniego, P.M. Lubin, Gemma Luzzi, J.F. Macias-Perez, B. Maffei, D. Maino, N. Mandolesi, M. Maris, F. Marleau, D.J. Marshall, E. Martinez-Gonzalez, Silvia Masi, M. Massardi, S. Matarrese, F. Matthai, P. Mazzotta, S. Mei, Alessandro Melchiorri, J.B. Melin, L. Mendes, A. Mennella, S. Mitra, M.A. Miville-Deschenes, A. Moneti, L. Montier, G. Morgante, D. Munshi, J.A. Murphy, P. Naselsky, Federico Nati, P. Natoli, H.U. Nørgaard-Nielsen, H.U. Norgaard-Nielsen, F. Noviello, D. Novikov, I. Novikov, S. Osborne, F. Pajot, D. Paoletti, F. Pasian, G. Patanchon, O. Perdereau, L. Perotto, F. Perrotta, Francesco Piacentini, M. Piat, E. Pierpaoli, R. Piffaretti, S. Plaszczynski, E. Pointecouteau, Gianluca Polenta, N. Ponthieu, L. Popa, T. Poutanen, G.W. Pratt, S. Prunet, J.L. Puget, J.P. Rachen, R. Rebolo, M. Reinecke, M. Remazeilles, C. Renault, S. Ricciardi, T. Riller, I. Ristorcelli, G. Rocha, M. Roman, C. Rosset, M. Rossetti, J.A. Rubino-Martin, B. Rusholme, M. Sandri, Giorgio Savini, B.M. Schaefer, D. Scott, G.F. Smoot, J.L. Starck, R. Sudiwala, R. Sunyaev, D. Sutton, A.S. Suur-Uski, J.F. Sygnet, J.A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, L. Valenziano, B. Van Tent, P. Vielva, F. Villa, N. Vittorio, L.A. Wade, B.D. Wandelt, N. Welikala, S.D.M. White, D. Yvon, A. Zacchei, and A. Zonca

Abstract

Context. About half of the baryons of the Universe are expected to be in the form of filaments of hot and low-density intergalactic medium. Most of these baryons remain undetected even by the most advanced X-ray observatories, which are limited in sensitivity to the diffuse low-density medium. Aims. The Planck satellite has provided hundreds of detections of the hot gas in clusters of galaxies via the thermal Sunyaev-Zel'dovich (tSZ) effect and is an ideal instrument for studying extended low-density media through the tSZ effect. In this paper we use the Planck data to search for signatures of a fraction of these missing baryons between pairs of galaxy clusters. Methods. Cluster pairs are good candidates for searching for the hotter and denser phase of the intergalactic medium (which is more easily observed through the SZ effect). Using an X-ray catalogue of clusters and the Planck data, we selected physical pairs of clusters as candidates. Using the Planck data, we constructed a local map of the tSZ effect centred on each pair of galaxy clusters. ROSAT data were used to construct X-ray maps of these pairs. After modelling and subtracting the tSZ effect and X-ray emission for each cluster in the pair, we studied the residuals on both the SZ and X-ray maps. Results. For the merging cluster pair A399-A401 we observe a significant tSZ effect signal in the intercluster region beyond the virial radii of the clusters. A joint X-ray SZ analysis allows us to constrain the temperature and density of this intercluster medium. We obtain a temperature of kT = 7.1 ± 0.9 keV (consistent with previous estimates) and a baryon density of (3.7 ± 0.2) × 10-4 cm -3. Conclusions. The Planck satellite mission has provided the first SZ detection of the hot and diffuse intercluster gas.

Published
2013

18. On stack-graph OPS-based lightwave networks

Author

H. Bourdin, Afonso Ferreira, and K. Marcus

Subjects
Hypergraph, Optical fiber, Multi-mode optical fiber, Computer science, law, Logical topology, Graph (abstract data type), Topological graph theory, Network topology, Topology, Plastic optical fiber, Graph, law.invention
Abstract

Most of the proposed architectures for interconnecting nodes in processor networks are based on graph topologies. Recently, stack-graph topologies based on the hypergraph theory have emerged, taking advantage of the fact that the huge bandwidth of optical fiber can be divided into several high-speed channels in networks using Optical Passive Star (OPS) couplers. We show through simulation that these stack-graph networks compare very well against graph-based ones, in terms of stochastic behavior for routing.

Published
1996
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19. Pressure Profiles of Distant Galaxy Clusters in the Planck Catalogue.

Author

H. Bourdin, P. Mazzotta, A. Kozmanyan, C. Jones, and A. Vikhlinin

Subjects
*COSMIC background radiation, *GALAXY clusters, *PLANCK (Artificial satellite)
Abstract

Successive releases of Planck data have demonstrated the strength of the Sunyaev–Zeldovich (SZ) effect in detecting hot baryons out to the galaxy cluster peripheries. To infer the hot gas pressure structure from nearby galaxy clusters to more distant objects, we developed a parametric method that models the spectral energy distribution and spatial anisotropies of both the Galactic thermal dust (GTD) and the cosmic microwave background (CMB), which are combined with the cluster SZ and dust signals. Taking advantage of the best angular resolution of the High Frequency Instrument channels (5 arcmin) and using X-ray priors in the innermost cluster regions that are not resolved with Planck, this modeling allowed us to analyze a sample of 61 nearby members of the Planck Catalogue of SZ sources (, ) using the full mission data, as well as to examine a distant sample of 23 clusters (, ) that have been recently followed-up with XMM-Newton and Chandra observations. We find that (i) the average shape of the mass-scaled pressure profiles agrees with results obtained by the Planck Collaboration in the nearby cluster sample, and that (ii) no sign of evolution is discernible between averaged pressure profiles of the low- and high-redshift cluster samples. In line with theoretical predictions for these halo masses and redshift ranges, the dispersion of individual profiles relative to a self-similar shape stays well below 10% inside r500 but increases in the cluster outskirts. [ABSTRACT FROM AUTHOR]

Published
2017
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21. SPECTRAL IMAGING OF GALAXY CLUSTERS WITH PLANCK.

Author

H. Bourdin, P. Mazzotta, and E. Rasia

Subjects
*SPECTRAL imaging, *COSMIC background radiation, *GALAXY clusters, *PLANCK (Artificial satellite), *ASTRONOMICAL observations
Abstract

The Sunyaev–Zeldovich (SZ) effect is a promising tool for detecting the presence of hot gas out to the galaxy cluster peripheries. We developed a spectral imaging algorithm dedicated to the SZ observations of nearby galaxy clusters with Planck, with the aim of revealing gas density anisotropies related to the filamentary accretion of materials, or pressure discontinuities induced by the propagation of shock fronts. To optimize an unavoidable trade-off between angular resolution and precision of the SZ flux measurements, the algorithm performs a multi-scale analysis of the SZ maps as well as of other extended components, such as the cosmic microwave background (CMB) anisotropies and the Galactic thermal dust. The demixing of the SZ signal is tackled through kernel-weighted likelihood maximizations. The CMB anisotropies are further analyzed through a wavelet analysis, while the Galactic foregrounds and SZ maps are analyzed via a curvelet analysis that best preserves their anisotropic details. The algorithm performance has been tested against mock observations of galaxy clusters obtained by simulating the Planck High Frequency Instrument and by pointing at a few characteristic positions in the sky. These tests suggest that Planck should easily allow us to detect filaments in the cluster peripheries and detect large-scale shocks in colliding galaxy clusters that feature favorable geometry. [ABSTRACT FROM AUTHOR]

Published
2015
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22. A MULTI-WAVELENGTH MASS ANALYSIS OF RCS2 J232727.6-020437, A ∼3 × 1015 M⊙ GALAXY CLUSTER AT z = 0.7.

Author

K. Sharon, M. D. Gladders, D. P. Marrone, H. Hoekstra, E. Rasia, H. Bourdin, D. Gifford, A. K. Hicks, C. Greer, T. Mroczkowski, L. F. Barrientos, M. Bayliss, J. E. Carlstrom, D. G. Gilbank, M. Gralla, J. Hlavacek-Larrondo, E. Leitch, P. Mazzotta, C. Miller, and S. J. C. Muchovej

Subjects
GALAXY clusters, WAVELENGTH assignment, MASS analysis (Spectrometry), ASTRONOMICAL surveys, VELOCITY
Abstract

We present an initial study of the mass and evolutionary state of a massive and distant cluster, RCS2 J232727.6-020437. This cluster, at z = 0.6986, is the richest cluster discovered in the RCS2 project. The mass measurements presented in this paper are derived from all possible mass proxies: X-ray measurements, weak-lensing shear, strong lensing, Sunyaev–Zel’dovich effect decrement, the velocity distribution of cluster member galaxies, and galaxy richness. While each of these observables probe the mass of the cluster at a different radius, they all indicate that RCS2 J232727.6−020437 is among the most massive clusters at this redshift, with an estimated mass of . In this paper, we demonstrate that the various observables are all reasonably consistent with each other to within their uncertainties. RCS2 J232727.6−020437 appears to be well relaxed—with circular and concentric X-ray isophotes, with a cool core, and no indication of significant substructure in extensive galaxy velocity data. [ABSTRACT FROM AUTHOR]

Published
2015
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23. Universal thermodynamic properties of the intracluster medium over two decades in radius in the X-COP sample

Author

Mauro Roncarelli, Mariachiara Rossetti, Stefano Ettori, Etienne Pointecouteau, Dominique Eckert, Silvano Molendi, Massimo Gaspari, S. De Grandi, Pasquale Mazzotta, V. Ghirardini, Franco Vazza, Elena Rasia, Hervé Bourdin, Institut de recherche en astrophysique et planétologie (IRAP), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), INAF-IASF Milano, Istituto Nazionale di Astrofisica (INAF), INAF - Osservatorio Astronomico di Brera (OAB), Centre d'étude spatiale des rayonnements (CESR), Department of Astronomy, University of Rome, Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, V. Ghirardini, D. Eckert, S. Ettori, E. Pointecouteau, S. Molendi, M. Gaspari, M. Rossetti, S. De Grandi, M. Roncarelli, H. Bourdin, P. Mazzotta, E. Rasia, and F. Vazza

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), galaxies: clusters: intracluster medium, Dark matter, Population, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, dark matter, Virial theorem, symbols.namesake, Intracluster medium, 0103 physical sciences, Gravitational collapse, Planck, Adiabatic process, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Galaxy cluster, Physics, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Settore FIS/05, 010308 nuclear & particles physics, Thermodynamical quantities, Astronomy and Astrophysics, X-rays: galaxies: clusters, galaxies: clusters: general, 13. Climate action, Space and Planetary Science, astro-ph.CO, symbols, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The hot plasma in galaxy clusters is expected to be heated to high temperatures through shocks and adiabatic compression. The thermodynamical properties of the gas encode information on the processes leading to the thermalization of the gas in the cluster's potential well as well as non-gravitational processes such as gas cooling, AGN feedback and kinetic energy. In this work we present the radial profiles of the thermodynamic properties of the intracluster medium (ICM) out to the virial radius for a sample of 12 galaxy clusters selected from the Planck all-sky survey. We determine the universal profiles of gas density, temperature, pressure, and entropy over more than two decades in radius. We exploit jointly X-ray information from XMM and Sunyaev-Zel'dovich constraints from Planck to recover thermodynamic properties out to 2 R500. We provide average functional forms for the radial dependence of the main quantities and quantify the slope and intrinsic scatter of the population as a function of radius. We find that gas density and pressure profiles steepen steadily with radius, in excellent agreement with previous observational results. Entropy profiles beyond R500 closely follow the predictions for the gravitational collapse of structures. The scatter in all thermodynamical quantities reaches a minimum in the range [0.2-0.8] R500 and increases outwards. Somewhat surprisingly, we find that pressure is substantially more scattered than temperature and density. Our results indicate that once accreting substructures are properly excised, the properties of the ICM beyond the cooling region R > 0.3 R500) follow remarkably well the predictions of simple gravitational collapse and require little non-gravitational corrections., 30 pages, 17 figures, 5 tables. Accepted for publication by A&A. This is one of the three companion papers ( including Ettori et al. 2018 and Eckert et al. 2018 ) on the X-COP sample. X-COP data products are available for download on https://www.astro.unige.ch/xcop

Published
2019
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24. Planck intermediate results. VIII. Filaments between interacting clusters

Author

Bartlett, J.G., Cardoso, J.-F., Castex, G., Delabrouille, J., Ganga, K., Giraud-Héraud, Y., Le Jeune, M., Patanchon, G., Piat, M., Remazeilles, M., Roman, M., Rosset, C., Smoot, G.F., Poutanen, T., Bikmaev, I., Natoli, P., Polenta, G., Mandolesi, N., Ashdown, M., Hobson, M., Lasenby, A., Bhatia, R., Kneissl, R., Bond, J.R., Miville-Deschênes, M.-A., Banday, A.J., Bernard, J.-P., Flores-Cacho, I., Forni, O., Giard, M., Jaffe, T.R., Montier, L., Pointecouteau, E., Ristorcelli, I., Doré, O., Hildebrandt, S.R., Mei, S., Rocha, G., Dahle, H., Lilje, P.B., Da Silva, A., Hernández-Monteagudo, C., Borrill, J., Rebolo, R., Melin, J.-B., Piffaretti, R., Yvon, D., Linden-Vørnle, Michael, Nørgaard-Nielsen, Hans Ulrik, Frommert, M., Kunz, M., Atrio-Barandela, F., Toffolatti, L., Rachen, J.P., Scott, D., Colombo, L.P.L., Pierpaoli, E., Juvela, M., Kurki-Suonio, H., Suur-Uski, A.-S., Jones, W.C., Knox, L., Lubin, P.M., Zonca, A., Wandelt, B.D., Cayón, L., Matarrese, S., De Bernardis, P., Masi, S., Melchiorri, A., Nati, F., Piacentini, F., Bersanelli, M., Maino, D., Mennella, A., Rossetti, M., Gregorio, A., Burigana, C., Balbi, A., Bourdin, H., De Gasperis, G., Mazzotta, P., Vittorio, N., Cabella, P., Christensen, P.R., Naselsky, P., Hempel, A., Rubiño-Martín, J.A., Dupac, X., Jagemann, T., Leonardi, R., Mendes, L., Tauber, J.A., De Zotti, G., Colafrancesco, S., Frailis, M., Galeotta, S., Maris, M., Pasian, F., Zacchei, A., Massardi, M., Cuttaia, F., Finelli, F., Franceschi, E., Gruppuso, A., Morgante, G., Paoletti, D., Ricciardi, S., Sandri, M., Terenzi, L., Valenziano, L., Villa, F., Donzelli, S., Tomasi, M., Désert, F.-X., Ponthieu, N., Mitra, S., Chamballu, A., Clements, D.L., Jaffe, A.H., Novikov, D., Chary, R.-R., Rusholme, B., Benoît, A., Dole, H., Aghanim, N., Aumont, J., Douspis, M., Lagache, G., Pajot, F., Puget, J.-L., Welikala, N., Benabed, K., Bouchet, F.R., Hivon, E., Moneti, A., Prunet, S., Sygnet, J.-F., Popa, L., Marleau, F., Chiang, L.-Y., Efstathiou, G., Harrison, D., Sutton, D., Eriksen, H.K., Hansen, F.K., Génova-Santos, R.T., Barreiro, R.B., Diego, J.M., González-Nuevo, J., Herranz, D., López-Caniego, M., Martínez-González, E., Vielva, P., Crill, B.P., Górski, K.M., Holmes, W.A., Lawrence, C.R., Wade, L.A., Bonaldi, A., Davis, R.J., Maffei, B., Noviello, F., Henrot-Versillé, S., Luzzi, G., Perdereau, O., Plaszczynski, S., Tristram, M., Catalano, A., Coulais, A., Lamarre, J.-M., Arnaud, M., Démoclès, J., Marshall, D.J., Pratt, G.W., Starck, J.-L., Comis, B., Hurier, G., MacÍas-Pérez, J.F., Perotto, L., Renault, C., Van Tent, B., Kisner, T.S., Dolag, K., Dörl, U., Enßlin, T.A., Gilfanov, M., Hovest, W., Knoche, J., Matthai, F., Reinecke, M., Riller, T., Sunyaev, R., White, S.D.M., Böhringer, H., Chon, G., Murphy, J.A., Novikov, I., Savini, G., Baccigalupi, C., Danese, L., Perrotta, F., Ade, P.A.R., Munshi, D., Sudiwala, R., Burenin, R., Osborne, S., Khamitov, I., Schaefer, B.M., Battaner, E., Department of Physics, Helsinki Institute of Physics, lanck Collaboration: P. A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, Balbi, . A., A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, K., Benabed, A., Benoˆıt, J. P., Bernard, M., Bersanelli, R., Bhatia, I., Bikmaev, H., Bo ̈hringer, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, H., Bourdin, R., Burenin, Burigana, . C., P., Cabella, J. F., Cardoso, G., Castex, A., Catalano, L., Cayo ́n, A., Chamballu, R. R., Chary, L. Y., Chiang, G., Chon, P. R., Christensen, D. L., Clement, S., Colafrancesco, L. P. L., Colombo, B., Comi, A., Coulai, B. P., Crill, Cuttaia, . F., A., Da Silva, H., Dahle, L., Danese, R. J., Davi, P., de Bernardi, G., de Gasperi, G., de Zotti, J., Delabrouille, De ́mocle`s, . J., F. X., De ́sert, J. M., Diego, K., Dolag, H., Dole, S., Donzelli, O., Dore ́, U., Do ̈rl, M., Douspi, X., Dupac, Efstathiou, . G., T. A., Enßlin, H. K., Eriksen, F., Finelli, I., Flores Cacho, O., Forni, M., Fraili, E., Franceschi, M., Frommert, Galeotta, . S., K., Ganga, R. T., Ge ́nova Santo, M., Giard, M., Gilfanov, Y., Giraud He ́raud, J., Gonza ́lez Nuevo, K. M., Go ́rski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, A., Hempel, S., Henrot Versille ́, C., Herna ́ndez Monteagudo, Herranz, . D., S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, W., Hovest, G., Hurier⋆⋆, T. R., Jaffe, A. H., Jaffe, Jagemann, . T., W. C., Jone, M., Juvela, I., Khamitov, T. S., Kisner, R., Kneissl, J., Knoche, L., Knox, M., Kunz, Kurki Suonio, . H., G., Lagache, J. M., Lamarre, A., Lasenby, C. R., Lawrence, M., Le Jeune, R., Leonardi, P. B., Lilje, Linden Vørnle, . M., M., Lo ́pez Caniego, P. M., Lubin, G., Luzzi, J. F., Mac ́ıas Pe ́rez, B., Maffei, D., Maino, N., Mandolesi, Maris, . M., F., Marleau, D. J., Marshall, E., Mart ́ınez Gonza ́lez, S., Masi, M., Massardi, S., Matarrese, F., Matthai, P., Mazzotta, Mei, . S., A., Melchiorri, J. B., Melin, L., Mende, A., Mennella, S., Mitra, M. A., Miville Descheˆne, A., Moneti, Montier, . L., G., Morgante, D., Munshi, J. A., Murphy, P., Naselsky, F., Nati, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, F., Pajot, D., Paoletti, F., Pasian, G., Patanchon, O., Perdereau, L., Perotto, F., Perrotta, Piacentini, . F., M., Piat, E., Pierpaoli, R., Piffaretti, S., Plaszczynski, E., Pointecouteau, G., Polenta, N., Ponthieu, L., Popa, Poutanen, . T., G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, R., Rebolo, M., Reinecke, M., Remazeille, C., Renault, S., Ricciardi, T., Riller, I., Ristorcelli, G., Rocha, M., Roman, C., Rosset, M., Rossetti, J. A., Rubin ̃o Mart ́ın, B., Rusholme, M., Sandri, G., Savini, B. M., Schaefer, D., Scott, G. F., Smoot, J. L., Starck, R., Sudiwala, R., Sunyaev, D., Sutton, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, M., Tristram, L., Valenziano, B., Van Tent, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Welikala, S. D. M., White, D., Yvon, A., Zacchei, A., Zonca, Universidad de Cantabria, APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), APC - Gravitation (APC-Gravitation), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), PLANCK, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), HELFA - Hélium : du fondamental aux applications, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Collaboration, P, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bikmaev, I, Bohringer, H, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Bourdin, H, Burenin, R, Burigana, C, Cabella, P, Cardoso, J, Castex, G, Catalano, A, Cayon, L, Chamballu, A, Chary, R, Chiang, L, Chon, G, Christensen, P, Clements, D, Colafrancesco, S, Colombo, L, Comis, B, Coulais, A, Crill, B, Cuttaia, F, Da Silva, A, Dahle, H, Danese, L, Davis, R, De Bernardis, P, De Gasperis, G, De Zotti, G, Delabrouille, J, Democles, J, Desert, F, Diego, J, Dolag, K, Dole, H, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Eriksen, H, Finelli, F, Flores-Cacho, I, Forni, O, Frailis, M, Franceschi, E, Frommert, M, Galeotta, S, Ganga, K, Genova-Santos, R, Giard, M, Gilfanov, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Hempel, A, Henrot-Versille, S, Hernandez-Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hovest, W, Hurier, G, Jaffe, T, Jaffe, A, Jagemann, T, Jones, W, Juvela, M, Khamitov, I, Kisner, T, Kneissl, R, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lamarre, J, Lasenby, A, Lawrence, C, Le Jeune, M, Leonardi, R, Lilje, P, Linden-Vørnle, M, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, Luzzi, G, Macias-Perez, J, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marleau, F, Marshall, D, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Matthai, F, Mazzotta, P, Mei, S, Melchiorri, A, Melin, J, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Nørgaard-Nielsen, H, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pajot, F, Paoletti, D, Pasian, F, Patanchon, G, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Piffaretti, R, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Roman, M, Rosset, C, Rossetti, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Savini, G, Schaefer, B, Scott, D, Smoot, G, Starck, J, Sudiwala, R, Sunyaev, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Valenziano, L, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Welikala, N, White, S, Yvon, D, Zacchei, A, Zonca, A, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Hélium : du fondamental aux applications (NEEL - HELFA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
clusters:general [galaxies], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Large-scale structure of Universe, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Astrophysics::High Energy Astrophysical Phenomena, education, galaxies:clusters:general, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, clusters: general [Galaxies], Hadrons, 7. Clean energy, 01 natural sciences, Virial theorem, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, ROSAT, Thermal, Cluster (physics), Planck, Planck ESA mission, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics, Galaxies: clusters: general, Physics, X rays, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, Galaxies, Galaxy, Baryon, galaxies: clusters: general, galaxies: clusters: general / large-scale structure of universe, large-scale structure of universe, Space and Planetary Science, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

[Context]: About half of the baryons of the Universe are expected to be in the form of filaments of hot and low-density intergalactic medium. Most of these baryons remain undetected even by the most advanced X-ray observatories, which are limited in sensitivity to the diffuse low-density medium. [Aims]: The Planck satellite has provided hundreds of detections of the hot gas in clusters of galaxies via the thermal Sunyaev-Zel'dovich (tSZ) effect and is an ideal instrument for studying extended low-density media through the tSZ effect. In this paper we use the Planck data to search for signatures of a fraction of these missing baryons between pairs of galaxy clusters. [Methods]: Cluster pairs are good candidates for searching for the hotter and denser phase of the intergalactic medium (which is more easily observed through the SZ effect). Using an X-ray catalogue of clusters and the Planck data, we selected physical pairs of clusters as candidates. Using the Planck data, we constructed a local map of the tSZ effect centred on each pair of galaxy clusters. ROSAT data were used to construct X-ray maps of these pairs. After modelling and subtracting the tSZ effect and X-ray emission for each cluster in the pair, we studied the residuals on both the SZ and X-ray maps. [Results]: For the merging cluster pair A399-A401 we observe a significant tSZ effect signal in the intercluster region beyond the virial radii of the clusters. A joint X-ray SZ analysis allows us to constrain the temperature and density of this intercluster medium. We obtain a temperature of kT = 7.1 ± 0.9 keV (consistent with previous estimates) and a baryon density of (3.7 ± 0.2) × 10-4 cm -3. Conclusions. The Planck satellite mission has provided the first SZ detection of the hot and diffuse intercluster gas. © 2013 ESO., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU).

Published
2016
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25. Planck Intermediate Results. XI: The gas content of dark matter halos: the Sunyaev-Zeldovich-stellar mass relation for locally brightest galaxies

Author

Planck, Collaboration, Ade, P. A. R., Aghanim, N., Arnaud, M., Ashdown, M., Atrio Barandela, F., Aumont, J., Baccigalupi, C., Balbi, A., Banday, A. J., Barreiro, R. B., Barrena, R., Bartlett, J. G., Battaner, E., Benabed, K., Bernard, J. P., Bersanelli, M., Bikmaev, I., Bock, J. J., Bohringer, H., Bonaldi, A., Bond, J. R., Borrill, J., Bouchet, F. R., Bourdin, H., Burenin, R., Burigana, C., Butler, R. C., Cabella, P., Chamballu, A., Chary, R. R., Chiang, L. Y., Chon, G., Christensen, P. R., Clements, D. L., Colafrancesco, S., Colombi, S., Colombo, L. P. L., Comis, B., Coulais, A., Crill, B. P., Cuttaia, F., Da Silva, A., Dahle, H., Davis, R. J., DE BERNARDIS, Paolo, De Gasperis, G., De Rosa, A., De Zotti, G., Delabrouille, J., Democles, J., Diego, J. M., Dole, H., Donzelli, S., Dore, O., Douspis, M., Dupac, X., Efstathiou, G., Ensslin, T. A., Finelli, F., Flores Cacho, I., Forni, O., Frailis, M., Franceschi, E., Frommert, M., Galeotta, S., Ganga, K., Genova Santos, R. T., Giard, M., Giraud Heraud, Y., Gonzalez Nuevo, J., Gorski, K. M., Gregorio, A., Gruppuso, A., Hansen, F. K., Harrison, D., Hernndez Monteagudo, C., Hernandez Monteagudo, C., Herranz, D., Hildebrandt, S. R., Hivon, E., Hobson, M., Holmes, W. A., Hornstrup, A., Hovest, W., Huffenberger, K. M., Hurier, G., Jaffe, T. R., Jaffe, A. H., Jones, W. C., Juvela, M., Keihanen, E., Keskitalo, R., Khamitov, I., Kisner, T. S., Kneissl, R., Knoche, J., Kunz, M., Kurki Suonio, H., Lahteenmaki, A., Laheenmaki, A., Lamarre, J. M., Lasenby, A., Lawrence, C. R., Le Jeune, M., Leonardi, R., Lilje, P. B., Linden Vørnle, M., Linden Vornle, M., Lopez Caniego, M., Lubin, P. M., Luzzi, Gemma, Macias Perez, J. F., Mactavish, C. J., Maffei, B., Maino, D., Mandolesi, N., Maris, M., Marleau, F., Marshall, D. J., Martinez Gonzalez, E., Masi, Silvia, Massardi, M., Matarrese, S., Mazzotta, P., Mei, S., Melchiorri, Alessandro, Melin, J. B., Mendes, L., Mennella, A., Mitra, S., Miville Deschenes, M. A., Moneti, A., Montier, L., Morgante, G., Mortlock, D., Munshi, D., Murphy, J. A., Naselsky, P., Nati, Federico, Natoli, P., Nørgaard Nielsen, H. U., Norgaard Nielsen, H. U., Noviello, F., Novikov, D., Novikov, I., Osborne, S., Oxborrow, C. A., Pajot, F., Paoletti, D., Perotto, L., Perrotta, F., Piacentini, Francesco, Piat, M., Pierpaoli, E., Piffaretti, R., Plaszczynski, S., Pointecouteau, E., Polenta, Gianluca, Popa, L., Poutanen, T., Pratt, G. W., Prunet, S., Puget, J. L., Rachen, J. P., Rebolo, R., Reinecke, M., Remazeilles, M., Renault, C., Ricciardi, Sara, Ristorcelli, I., Rocha, G., Roman, M., Rosset, C., Rossetti, M., Rubino Martin, J. A., Rusholme, B., Sandri, M., Savini, Giorgio, Scott, D., Spencer, L., Starck, J. L., Stolyarov, V., Sudiwala, R., Sunyaev, R., Sutton, D., Suur Uski, A. S., Sygnet, J. F., Tauber, J. A., Terenzi, L., Toffolatti, L., Tomasi, M., Tristram, M., Valenziano, L., Van Tent, B., Vielva, P., Villa, F., Vittorio, N., Wade, L. A., Wandelt, B. D., Wang, W., Welikala, N., Weller, J., White, S. D. M., White, M., Yvon, D., Zacchei, A., Zonca, A., APC - Cosmologie, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), APC - Gravitation (APC-Gravitation), AstroParticule et Cosmologie (APC (UMR_7164)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PLANCK, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Instituto de Astrofisica de Canarias (IAC), Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Planck Collaboration, Department of Physics, Helsinki Institute of Physics, Universidad de Cantabria, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Barrena, R, Bartlett, J, Battaner, E, Benabed, K, Bernard, J, Bersanelli, M, Bikmaev, I, Bock, J, Bohringer, H, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Bourdin, H, Burenin, R, Burigana, C, Butler, R, Cabella, P, Chamballu, A, Chary, R, Chiang, L, Chon, G, Christensen, P, Clements, D, Colafrancesco, S, Colombi, S, Colombo, L, Comis, B, Coulais, A, Crill, B, Cuttaia, F, Da Silva, A, Dahle, H, Davis, R, De Bernardis, P, De Gasperis, G, De Rosa, A, De Zotti, G, Delabrouille, J, Democles, J, Diego, J, Dole, H, Donzelli, S, Dore, O, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Finelli, F, Flores-Cacho, I, Forni, O, Frailis, M, Franceschi, E, Frommert, M, Galeotta, S, Ganga, K, Genova-Santos, R, Giard, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Hernndez-Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hornstrup, A, Hovest, W, Huffenberger, K, Hurier, G, Jaffe, T, Jaffe, A, Jones, W, Juvela, M, Keihanen, E, Keskitalo, R, Khamitov, I, Kisner, T, Kneissl, R, Knoche, J, Kunz, M, Kurki-Suonio, H, Lahteenmaki, A, Lamarre, J, Lasenby, A, Lawrence, C, Le Jeune, M, Leonardi, R, Lilje, P, Linden-Vornle, M, Lopez-Caniego, M, Lubin, P, Luzzi, G, Macias-Perez, J, Mactavish, C, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marleau, F, Marshall, D, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Mazzotta, P, Mei, S, Melchiorri, A, Melin, J, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Norgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Oxborrow, C, Pajot, F, Paoletti, D, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Piffaretti, R, Plaszczynski, S, Pointecouteau, E, Polenta, G, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Ristorcelli, I, Rocha, G, Roman, M, Rosset, C, Rossetti, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Savini, G, Scott, D, Spencer, L, Starck, J, Stolyarov, V, Sudiwala, R, Sunyaev, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Valenziano, L, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Wang, W, Welikala, N, Weller, J, White, S, White, M, Yvon, D, Zacchei, A, Zonca, A, Anne Lähteenmäki Group, Aalto-yliopisto, Aalto University, P. A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, R., Barrena, J. G., Bartlett, E., Battaner, K., Benabed, J. P., Bernard, M., Bersanelli, I., Bikmaev, J. J., Bock, H., Böhringer, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, H., Bourdin, R., Burenin, C., Burigana, R. C., Butler, P., Cabella, A., Chamballu, R. R., Chary, L. Y., Chiang, G., Chon, P. R., Christensen, D. L., Clement, S., Colafrancesco, S., Colombi, L. P. L., Colombo, B., Comi, A., Coulai, B. P., Crill, F., Cuttaia, A., Da Silva, H., Dahle, R. J., Davi, P., de Bernardi, G., de Gasperi, A., de Rosa, G., de Zotti, J., Delabrouille, J., Démoclè, J. M., Diego, H., Dole, S., Donzelli, O., Doré, M., Douspi, X., Dupac, G., Efstathiou, T. A., Enßlin, F., Finelli, I., Flores Cacho, O., Forni, M., Fraili, E., Franceschi, M., Frommert, S., Galeotta, K., Ganga, R. T., Génova Santo, M., Giard, Y., Giraud Héraud, J., González Nuevo, K. M., Górski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, C., Hernández Monteagudo, D., Herranz, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, A., Hornstrup, W., Hovest, K. M., Huffenberger, G., Hurier, T. R., Jaffe, A. H., Jaffe, W. C., Jone, M., Juvela, E., Keihänen, R., Keskitalo, I., Khamitov, T. S., Kisner, R., Kneissl, J., Knoche, M., Kunz, H., Kurki Suonio, A., Lähteenmäki, J. M., Lamarre, A., Lasenby, C. R., Lawrence, M., Le Jeune, R., Leonardi, P. B., Lilje, M., Linden Vørnle, M., López Caniego, P. M., Lubin, G., Luzzi, J. F., Macías Pérez, C. J., Mactavish, B., Maffei, D., Maino, N., Mandolesi, M., Mari, F., Marleau, D. J., Marshall, E., Martínez González, S., Masi, M., Massardi, S., Matarrese, P., Mazzotta, S., Mei, A., Melchiorri, J. B., Melin, L., Mende, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Mortlock, D., Munshi, J. A., Murphy, P., Naselsky, F., Nati, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, C. A., Oxborrow, F., Pajot, D., Paoletti, L., Perotto, F., Perrotta, F., Piacentini, M., Piat, E., Pierpaoli, R., Piffaretti, S., Plaszczynski, E., Pointecouteau, G., Polenta, L., Popa, T., Poutanen, G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, R., Rebolo, M., Reinecke, M., Remazeille, C., Renault, S., Ricciardi, I., Ristorcelli, G., Rocha, M., Roman, C., Rosset, M., Rossetti, J. A., Rubiño Martín, B., Rusholme, M., Sandri, G., Savini, D., Scott, L., Spencer, J. L., Starck, V., Stolyarov, R., Sudiwala, R., Sunyaev, D., Sutton, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, M., Tristram, L., Valenziano, B., Van Tent, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, W., Wang, N., Welikala, J., Weller, S. D. M., White, M., White, D., Yvon, A., Zacchei, and A., Zonca

Subjects
Cosmic background radiation, Cosmology: observations, Galaxies: clusters: general, Large-scale structure of Universe, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Astrophysics, clusters: general [Galaxies], SCALING RELATIONS, Cosmology: observation, 01 natural sciences, observations [Cosmology], 010303 astronomy & astrophysics, Malmquist bias, Physics, cosmology: observations — cosmic microwave background — large-scale structure of the Universe — galaxies: clusters: general, CATALOG, Content (measure theory), ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, symbols, Halo, INTRACLUSTER MEDIUM, observations — cosmic microwave background — large-scale structure of the Universe — galaxies: clusters: general [cosmology], Astrophysics - Cosmology and Nongalactic Astrophysics, ACTIVE GALACTIC NUCLEI, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, cosmology: observations, cosmic background radiation, large-scale structure of Universe, galaxies: clusters: general, education, Dark matter, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, Planck, BLACK-HOLES, large-scale structure of universe, Astrophysics::Galaxy Astrophysics, SOUTH-POLE TELESCOPE, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, Galaxy, Baryon, Space and Planetary Science, COSMOLOGY, DIGITAL SKY SURVEY, COOLING FLOWS, CLUSTERS, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from the Sloan Digital Sky Survey (SDSS). These are predominantly the central galaxies of their dark matter halos. We calibrate the stellar-to-halo mass conversion using realistic mock catalogues based on the Millennium Simulation. Applying a multi-frequency matched filter to the Planck data for each LBG, and averaging the results in bins of stellar mass, we measure the mean SZ signal down to M∗ ~ 2 × 1011 M⊙, with a clear indication of signal at even lower stellar mass. We derive the scaling relation between SZ signal and halo mass by assigning halo properties from our mock catalogues to the real LBGs and simulating the Planck observation process. This relation shows no evidence for deviation from a power law over a halo mass range extending from rich clusters down to M500 ~ 2 × 1013 M⊙, and there is a clear indication of signal down to M500 ~ 4 × 1012 M⊙. Planck’s SZdetections in such low-mass halos imply that about a quarter of all baryons have now been seen in the form of hot halo gas, and that this gas must be less concentrated than the dark matter in such halos in order to remain consistent with X-ray observations. At the high-mass end, the measured SZ signal is 20% lower than found from observations of X-ray clusters, a difference consistent with the magnitude of Malmquist bias effects that were previously estimated for the X-ray sample., The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, JA and RES (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU).

Published
2016
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26. Discovery of large-scale diffuse radio emission and of a new galaxy cluster in the surroundings of MACS J0520.7-1328

Author

Shea Brown, Rossella Cassano, I. Bartalucci, Chiara Ferrari, Daniele Dallacasa, Pasquale Mazzotta, Hubertus Intema, Simona Giacintucci, Giulia Macario, Ruta Kale, Tiziana Venturi, Hervé Bourdin, Melanie Johnston-Hollitt, G. W. Pratt, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), GM and CF acknowledge financial support by the 'Agence Nationale de la Recherche' (ANR) through grant ANR-09-JCJC-0001-01. GWP acknowledges financial support by ANR through grant ant ANR-11-BD56-015., Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), G. Macario, H. T. Intema, C. Ferrari, H. Bourdin, S. Giacintucci, T. Venturi, P. Mazzotta, I. Bartalucci, M. Johnston-Hollitt, R. Cassano, D. Dallacasa, G. W. Pratt, R. Kale, and S. Brown

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010504 meteorology & atmospheric sciences, Infrared, Astrophysics::High Energy Astrophysical Phenomena, galaxies: clusters: individual: MACS J0520.7-1328, FOS: Physical sciences, Scale (descriptive set theory), Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, Cluster (physics), Surface brightness, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, radio continuum: galaxies, Giant Metrewave Radio Telescope, Astronomy and Astrophysics, Galaxies: clusters: individual: 1WGA J0521.0-1333, Galaxies: clusters: individual: MACS J0520.7-1328, Radio continuum: galaxies, X-rays: galaxies: clusters, Astrophysics - Astrophysics of Galaxies, Redshift, Galaxy, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), X-rays: galaxies: clusters, galaxies: clusters: individual: 1WGA J0521.0-1333, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We report the discovery of large-scale diffuse radio emission South-East of the galaxy cluster MACS J0520.7-1328, detected through high sensitivity Giant Metrewave Radio Telescope 323 MHz observations. This emission is dominated by an elongated diffuse radio source and surrounded by other features of lower surface brightness. Patches of these faint sources are marginally detected in a 1.4 GHz image obtained through a re-analysis of archival NVSS data. Interestingly, the elongated radio source coincides with a previously unclassified extended X-ray source. We perform a multi-wavelength analysis based on archival infrared, optical and X-ray Chandra data. We find that this source is a low-temperature (~3.6 keV) cluster of galaxies, with indications of a disturbed dynamical state, located at a redshift that is consistent with the one of the main galaxy cluster MACS J0520.7-132 (z=0.336). We suggest that the diffuse radio emission is associated with the non-thermal components in the intracluster and intergalactic medium in and around the newly detected cluster. We are planning deeper multi-wavelength and multi-frequency radio observations to accurately investigate the dynamical scenario of the two clusters and to address more precisely the nature of the complex radio emission., Comment: 10 pages, 6 Figures, accepted for publication in A&A

Published
2014
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27. Planck intermediate results X. Physics of the hot gas in the Coma cluster

Author

Nabila Aghanim, Jacques Delabrouille, Peter A. R. Ade, Amedeo Balbi, Fabio Finelli, James G. Bartlett, A. de Rosa, Ricardo Genova-Santos, W. C. Jones, Allan Hornstrup, Etienne Pointecouteau, R. Leonardi, T. Riller, Monique Arnaud, S. R. Hildebrandt, Pasquale Mazzotta, C. Renault, R. B. Barreiro, J. Knoche, Simon Prunet, F. Cuttaia, Gayoung Chon, Mika Juvela, Rashmikant V. Sudiwala, J. González-Nuevo, O. Perdereau, Anna Bonaldi, Lloyd Knox, Carlo Burigana, Davide Maino, X. Dupac, C. Hernández-Monteagudo, I. F. Bikmaev, Niraj Welikala, Marc-Antoine Miville-Deschênes, T. R. Jaffe, L. P. L. Colombo, Dmitry Novikov, Hans Ulrik Nørgaard-Nielsen, Marc Türler, Pavel Naselsky, R. J. Davis, L. Popa, Jean-Baptiste Melin, J. A. Murphy, M. Reinecke, George F. Smoot, F. Noviello, K. Ganga, J. Tuovinen, B. Van Tent, Simona Mei, L. A. Wade, Daniela Paoletti, Jussi Varis, Andrea Zonca, A. J. Banday, Klaus Dolag, L. Montier, A. Gregorio, Krzysztof M. Gorski, Jose M. Diego, M. Giard, K. Benabed, J.-L. Puget, Michael L. Brown, P. R. Christensen, Luca Terenzi, B. P. Crill, Lung-Yih Chiang, Dipak Munshi, J. R. Bond, Francesca Perrotta, G. de Gasperis, T. Jagemann, D. Yvon, Olivier Doré, E. Franceschi, Martin Kunz, H. K. Eriksen, M. Sandri, Mathieu Remazeilles, Torsten A. Enßlin, L. Toffolatti, Shea Brown, W. Hovest, U. Dörl, Håkon Dahle, E. Battaner, Rafael Rebolo, J.-P. Bernard, Anthony Lasenby, Charles R. Lawrence, E. Martínez-González, E. Keihänen, Matthieu Roman, R. Kneissl, Bruno Maffei, Saleem Zaroubi, Benjamin D. Wandelt, Julian Borrill, F. Piacentini, Nicola Vittorio, M. Frommert, G. W. Pratt, M. Piat, Gianluca Morgante, R. Piffaretti, Clive Dickinson, M. Le Jeune, I. Flores-Cacho, Alain Benoit, Simon D. M. White, L. Mendes, Sabino Matarrese, F.-X. Désert, Anne Lähteenmäki, G. Umana, A. Da Silva, F. Atrio-Barandela, Mariachiara Rossetti, S. Ricciardi, R. A. Burenin, J. Démoclès, Andrea Zacchei, S. Galeotta, Sophie Henrot-Versille, P. B. Lilje, Rashid Sunyaev, E. M. Churazov, B. M. Schaefer, Jörg P. Rachen, A. Coulais, Paolo Natoli, Olivier Forni, F. Matthai, Jose Alberto Rubino-Martin, F. K. Hansen, G. de Zotti, M. Ashdown, Paolo Cabella, E. Pierpaoli, Douglas Scott, W. Holmes, M. Tristram, G. Polenta, M. Linden-Vørnle, P. Carvalho, D. L. Harrison, T. Poutanen, M. Maris, Alessandro Melchiorri, Ben Rusholme, Hervé Bourdin, A. Moneti, N. Mandolesi, François R. Bouchet, Philip Lubin, L. Cayón, J. F. Macías-Pérez, Irek Khamitov, Graca Rocha, Marian Douspis, G. Hurier, Hans Böhringer, Kevin M. Huffenberger, Francine R. Marleau, Fabrizio Villa, Silvia Masi, M. Frailis, Carlo Baccigalupi, E. Hivon, J.-F. Sygnet, Lawrence Rudnick, Luca Valenziano, A. Mennella, D. Sutton, F. Stivoli, Nicolas Ponthieu, S. Donzelli, Luigi Danese, Marat Gilfanov, Alessandro Gruppuso, Giorgio Savini, A. Catalano, J.-M. Lamarre, S. Osborne, Michael P. Hobson, Hannu Kurki-Suonio, F. Pajot, David L. Clements, I. Ristorcelli, H. Dole, Subhabrata Mitra, J. A. Tauber, M. Tomasi, Marco Bersanelli, J.-F. Cardoso, Stéphane Plaszczynski, Guilaine Lagache, M. López-Caniego, P. de Bernardis, C. Rosset, J. Aumont, P. Vielva, Marcella Massardi, I. D. Novikov, A.-S. Suur-Uski, Sergio Colafrancesco, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Université Joseph Fourier - 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Paris 7 (UPD7), Hélium : du fondamental aux applications [2007-2015] (HELFA [2007-2015]), Institut Néel [2007-2015] (NEEL [2007-2015]), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Centre National de la Recherche Scientifique (CNRS), Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - 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A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, K., Benabed, A., Benoît, J. P., Bernard, M., Bersanelli, I., Bikmaev, H., Böhringer, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, H., Bourdin, M. L., Brown, S. D., Brown, R., Burenin, C., Burigana, P., Cabella, J. F., Cardoso, P., Carvalho, A., Catalano, L., Cayón, L. Y., Chiang, G., Chon, P. R., Christensen, E., Churazov, D. L., Clement, S., Colafrancesco, L. P. L., Colombo, A., Coulai, B. P., Crill, F., Cuttaia, A., Da Silva, H., Dahle, L., Danese, R. J., Davi, P., de Bernardi, G., de Gasperi, A., de Rosa, G., de Zotti, J., Delabrouille, J., Démoclè, F. X., Désert, C., Dickinson, J. M., Diego, K., Dolag, H., Dole, S., Donzelli, O., Doré, U., Dörl, M., Douspi, X., Dupac, T. A., Enßlin, H. K., Eriksen, F., Finelli, I., Flores Cacho, O., Forni, M., Fraili, E., Franceschi, M., Frommert, S., Galeotta, K., Ganga, R. T., Génova Santo, M., Giard, M., Gilfanov, J., González Nuevo, K. M., Górski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, S., Henrot Versillé, C., Hernández Monteagudo, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, A., Hornstrup, W., Hovest, K. M., Huffenberger, G., Hurier, T. R., Jaffe, T., Jagemann, W. C., Jone, M., Juvela, E., Keihänen, I., Khamitov, R., Kneissl, J., Knoche, L., Knox, M., Kunz, H., Kurki Suonio, G., Lagache, A., Lähteenmäki, J. M., Lamarre, A., Lasenby, C. R., Lawrence, M., Le Jeune, R., Leonardi, P. B., Lilje, M., Linden Vørnle, M., López Caniego, P. M., Lubin, J. F., Macías Pérez, B., Maffei, D., Maino, N., Mandolesi, M., Mari, F., Marleau, E., Martínez González, S., Masi, M., Massardi, S., Matarrese, F., Matthai, P., Mazzotta, S., Mei, A., Melchiorri, J. B., Melin, L., Mende, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Munshi, J. A., Murphy, P., Naselsky, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, F., Pajot, D., Paoletti, O., Perdereau, F., Perrotta, F., Piacentini, M., Piat, E., Pierpaoli, R., Piffaretti, S., Plaszczynski, E., Pointecouteau, G., Polenta, N., Ponthieu, L., Popa, T., Poutanen, G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, R., Rebolo, M., Reinecke, M., Remazeille, C., Renault, S., Ricciardi, T., Riller, I., Ristorcelli, G., Rocha, M., Roman, C., Rosset, M., Rossetti, J. A., Rubiño Martín, L., Rudnick, B., Rusholme, M., Sandri, G., Savini, B. M., Schaefer, D., Scott, G. F., Smoot, F., Stivoli, R., Sudiwala, R., Sunyaev, D., Sutton, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, M., Tristram, J., Tuovinen, M., Türler, G., Umana, L., Valenziano, B., Van Tent, J., Vari, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Welikala, S. D. M., White, D., Yvon, A., Zacchei, S., Zaroubi, A., Zonca, Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Hélium : du fondamental aux applications (NEEL - HELFA), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Observatoire des Sciences de l'Univers de Grenoble (OSUG), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Shock wave, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy, Coma (optics), galaxies: clusters: individual: Coma cluster, Astrophysics, cosmic background radiation, 01 natural sciences, ROSAT, clusters: general [galaxies], 010303 astronomy & astrophysics, Physics, Shock (fluid dynamics), TEMPERATURE STRUCTURE, MAGNETIC-FIELD, Radius, observations [cosmology], galaxies: cluster [X-rays], SHOCK-WAVES, Cosmic background radiation, Cosmology: observations, Galaxies: clusters: general, Galaxies: clusters: individual: Coma cluster, Galaxies: clusters: intracluster medium, X-rays: galaxies: clusters, clusters: intracluster medium [galaxies], galaxies: clusters: general, ALL-SKY SURVEY, symbols, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, astro-ph.CO, galaxies: clusters: intracluster medium, cosmology: observations, LAL 13-71, Astrophysics - Cosmology and Nongalactic Astrophysics, observation [cosmology], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, education, FOS: Physical sciences, clusters: individual: Coma cluster [galaxies], Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], SIMULATED GALAXY CLUSTERS, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, RADIO HALOS, 0103 physical sciences, LARGE-SCALE STRUCTURE, Coma Cluster, Cluster (physics), PRE-LAUNCH STATUS, Planck, Astrophysics::Galaxy Astrophysics, XMM-NEWTON, 010308 nuclear & particles physics, Astronomy and Astrophysics, 115 Astronomy, Space science, Space and Planetary Science, galaxies: clusters: individual: coma cluster, x-rays: galaxies: clusters, galaxies: clusters [X-rays], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], SUNYAEV-ZELDOVICH
Abstract

We present an analysis of Planck satellite data on the Coma cluster observed via the Sunyaev-Zeldovich effect. Thanks to its great sensitivity, Planck is able, for the first time, to detect SZ emission up to r ≈ 3 × R500. We test previously proposed spherically symmetric models for the pressure distribution in clusters against the azimuthally averaged data. In particular, we find that the Arnaud et al. (2010, A&A, 517, A92) “universal” pressure profile does not fit Coma, and that their pressure profile for merging systems provides a reasonable fit to the data only at r < R500; by r = 2 × R500 it underestimates the observed y profile by a factor of ≃2. This may indicate that at these larger radii either: i) the cluster SZ emission is contaminated by unresolved SZ sources along the line of sight; or ii) the pressure profile of Coma is higher at r > R500 than the mean pressure profile predicted by the simulations used to constrain the models. The Planck image shows significant local steepening of the y profile in two regions about half a degree to the west and to the south-east of the cluster centre. These features are consistent with the presence of shock fronts at these radii, and indeed the western feature was previously noticed in the ROSAT PSPC mosaic as well as in the radio. Using Plancky profiles extracted from corresponding sectors we find pressure jumps of 4.9-0.2+0.4 and 5.0-0.1+1.3 in the west and south-east, respectively. Assuming Rankine-Hugoniot pressure jump conditions, we deduce that the shock waves should propagate with Mach number Mw = 2.03-0.04+0.09 and Mse = 2.05-0.02+0.25 in the west and south-east, respectively. Finally, we find that the y and radio-synchrotron signals are quasi-linearly correlated on Mpc scales, with small intrinsic scatter. This implies either that the energy density of cosmic-ray electrons is relatively constant throughout the cluster, or that the magnetic fields fall off much more slowly with radius than previously thought., The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and DEISA (EU). Partial support for this work for L. Rudnick comes from U.S. NSF Grant 09-08668 to the University of Minnesota.

Published
2013
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28. Planck intermediate results VI : The dynamical structure of PLCKG214.6+37.0, a Planck discovered triple system of galaxy clusters

Author

Bartlett, J.G., Cardoso, J.-F., Castex, G., Delabrouille, J., Ganga, K., Giraud-Héraud, Y., Le Jeune, M., Patanchon, G., Piat, M., Remazeilles, M., Roman, M., Rosset, C., Smoot, G.F., Lähteenmäki, A., Poutanen, T., Bikmaev, I., Kunz, M., Natoli, P., Polenta, G., Mandolesi, N., Ashdown, M., Hobson, M., Lasenby, A., Bhatia, R., Kneissl, R., Bond, J.R., Miville-Deschênes, M.-A., Banday, A.J., Bernard, J.-P., Flores-Cacho, I., Forni, O., Giard, M., Jaffe, T.R., Montier, L., Pointecouteau, E., Ristorcelli, I., Doré, O., Hildebrandt, S.R., Mei, S., Rocha, G., Dahle, H., Lilje, P.B., Da Silva, A., Hernández-Monteagudo, C., Borrill, J., Rebolo, R., Melin, J.-B., Piffaretti, R., Yvon, D., Nørgaard-Nielsen, Hans Ulrik, Frommert, M., Atrio-Barandela, F., Toffolatti, L., Rachen, J.P., Scott, D., Colombo, L.P.L., Pierpaoli, E., Juvela, M., Keihänen, E., Kurki-Suonio, H., Suur-Uski, A.-S., Jones, W.C., Knox, L., Zonca, A., Wandelt, B.D., Cayón, L., Matarrese, S., Burigana, C., De Bernardis, P., Masi, S., Melchiorri, A., Nati, F., Piacentini, F., Bersanelli, M., Maino, D., Mennella, A., Rossetti, M., Gregorio, A., Balbi, A., Bourdin, H., De Gasperis, G., Mazzotta, P., Vittorio, N., Cabella, P., Christensen, P.R., Naselsky, P., Hempel, A., Rubiño-Martín, J.A., Dupac, X., Jagemann, T., Leonardi, R., Mendes, L., Tauber, J.A., De Zotti, G., Colafrancesco, S., Frailis, M., Galeotta, S., Maris, M., Pasian, F., Zacchei, A., Massardi, M., Cuttaia, F., Finelli, F., Franceschi, E., Gruppuso, A., Morgante, G., Paoletti, D., Ricciardi, S., Sandri, M., Terenzi, L., Valenziano, L., Villa, F., Donzelli, S., Tomasi, M., Ponthieu, N., Mitra, S., Chamballu, A., Clements, D.L., Jaffe, A.H., Mortlock, D., Novikov, D., Rusholme, B., Benoît, A., Dole, H., Aghanim, N., Aumont, J., Douspis, M., Lagache, G., Pajot, F., Puget, J.-L., Welikala, N., Benabed, K., Bouchet, F.R., Colombi, S., Hivon, E., Moneti, A., Prunet, S., Sygnet, J.-F., Popa, L., Marleau, F., Chiang, L.-Y., Efstathiou, G., Harrison, D., Sutton, D., Eriksen, H.K., Hansen, F.K., Génova-Santos, R.T., Barreiro, R.B., Diego, J.M., González-Nuevo, J., Herranz, D., López-Caniego, M., Martínez-González, E., Vielva, P., Crill, B.P., Górski, K.M., Holmes, W.A., Lawrence, C.R., Wade, L.A., Bonaldi, A., Davis, R.J., Noviello, F., Zaroubi, S., Henrot-Versillé, S., Luzzi, G., Perdereau, O., Plaszczynski, S., Tristram, M., Catalano, A., Coulais, A., Lamarre, J.-M., Arnaud, M., Démoclès, J., Marshall, D.J., Pratt, G.W., Starck, J.-L., Comis, B., Hurier, G., Macías-Pérez, J.F., Perotto, L., Renault, C., Van Tent, B., Kisner, T.S., Dolag, K., Dörl, U., Enßlin, T.A., Gilfanov, M., Knoche, J., Reinecke, M., Riller, T., Sunyaev, R., Böhringer, H., Chon, G., Tuovinen, J., Murphy, J.A., Novikov, I., Savini, G., Baccigalupi, C., Danese, L., Perrotta, F., Ade, P.A.R., Munshi, D., Sudiwala, R., Burenin, R., Osborne, S., Khamitov, I., Heinämäki, P., Battaner, E., Department of Physics, Helsinki Institute of Physics, Anne Lähteenmäki Group, Aalto-yliopisto, Aalto University, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoit, A, Bernard, J, Bersanelli, M, Bhatia, R, Bikmaev, I, Bohringer, H, Bonaldi, A, Bond, J, Borrill, J, Bouchet, F, Bourdin, H, Burenin, R, Burigana, C, Cabella, P, Cardoso, J, Castex, G, Catalano, A, Cayon, L, Chamballu, A, Chiang, L, Chon, G, Christensen, P, Clements, D, Colafrancesco, S, Colombi, S, Colombo, L, Comis, B, Coulais, A, Crill, B, Cuttaia, F, Da Silva, A, Dahle, H, Danese, L, Davis, R, De Bernardis, P, De Gasperis, G, De Zotti, G, Delabrouille, J, Democles, J, Diego, J, Dolag, K, Dole, H, Donzelli, S, Dore, O, Dorl, U, Douspis, M, Dupac, X, Efstathiou, G, Ensslin, T, Eriksen, H, Finelli, F, Flores-Cacho, I, Forni, O, Frailis, M, Franceschi, E, Frommert, M, Galeotta, S, Ganga, K, Genova-Santos, R, Giard, M, Gilfanov, M, Giraud-Heraud, Y, Gonzalez-Nuevo, J, Gorski, K, Gregorio, A, Gruppuso, A, Hansen, F, Harrison, D, Heinamaki, P, Hempel, A, Henrot-Versille, S, Hernandez-Monteagudo, C, Herranz, D, Hildebrandt, S, Hivon, E, Hobson, M, Holmes, W, Hurier, G, Jaffe, T, Jaffe, A, Jagemann, T, Jones, W, Juvela, M, Keihanen, E, Khamitov, I, Kisner, T, Kneissl, R, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lahteenmaki, A, Lamarre, J, Lasenby, A, Lawrence, C, Le Jeune, M, Leonardi, R, Lilje, P, Lopez-Caniego, M, Luzzi, G, Macias-Perez, J, Maino, D, Mandolesi, N, Maris, M, Marleau, F, Marshall, D, Martinez-Gonzalez, E, Masi, S, Massardi, M, Matarrese, S, Mazzotta, P, Mei, S, Melchiorri, A, Melin, J, Mendes, L, Mennella, A, Mitra, S, Miville-Deschenes, M, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Munshi, D, Murphy, J, Naselsky, P, Nati, F, Natoli, P, Nørgaard-Nielsen, H, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Pajot, F, Paoletti, D, Pasian, F, Patanchon, G, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Piffaretti, R, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, G, Prunet, S, Puget, J, Rachen, J, Rebolo, R, Reinecke, M, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ristorcelli, I, Rocha, G, Roman, M, Rosset, C, Rossetti, M, Rubino-Martin, J, Rusholme, B, Sandri, M, Savini, G, Scott, D, Smoot, G, Starck, J, Sudiwala, R, Sunyaev, R, Sutton, D, Suur-Uski, A, Sygnet, J, Tauber, J, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tuovinen, J, Valenziano, L, Van Tent, B, Vielva, P, Villa, F, Vittorio, N, Wade, L, Wandelt, B, Welikala, N, Yvon, D, Zacchei, A, Zaroubi, S, Zonca, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Hélium : du fondamental aux applications (NEEL - HELFA), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PLANCK, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Hélium : du fondamental aux applications (HELFA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), APC - Cosmologie, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), HELFA - Hélium : du fondamental aux applications, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), APC - Gravitation (APC-Gravitation), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Max-Planck-Institut für Gravitationsphysik ( Albert-Einstein-Institut ) (AEI), Max-Planck-Gesellschaft-Max-Planck-Gesellschaft, Astronomy, P. A. R., Ade, N., Aghanim, M., Arnaud, M., Ashdown, F., Atrio Barandela, J., Aumont, C., Baccigalupi, A., Balbi, A. J., Banday, R. B., Barreiro, J. G., Bartlett, E., Battaner, K., Benabed, A., Benoît, J. P., Bernard, M., Bersanelli, R., Bhatia, I., Bikmaev, H., Böhringer, A., Bonaldi, J. R., Bond, J., Borrill, F. R., Bouchet, H., Bourdin, R., Burenin, C., Burigana, P., Cabella, J. F., Cardoso, G., Castex, A., Catalano, L., Cayón, A., Chamballu, L. Y., Chiang, G., Chon, P. R., Christensen, D. L., Clement, S., Colafrancesco, S., Colombi, L. P. L., Colombo, B., Comi, A., Coulai, B. P., Crill, F., Cuttaia, A., Da Silva, H., Dahle, L., Danese, R. J., Davi, P., de Bernardi, G., de Gasperi, G., de Zotti, J., Delabrouille, J., Démoclè, J. M., Diego, K., Dolag, H., Dole, S., Donzelli, O., Doré, U., Dörl, M., Douspi, X., Dupac, G., Efstathiou, T. A., Enßlin, H. K., Eriksen, F., Finelli, I., Flores Cacho, O., Forni, M., Fraili, E., Franceschi, M., Frommert, S., Galeotta, K., Ganga, R. T., Génova Santo, M., Giard, M., Gilfanov, Y., Giraud Héraud, J., González Nuevo, K. M., Górski, Gregorio, Anna, A., Gruppuso, F. K., Hansen, D., Harrison, P., Heinämäki, A., Hempel, S., Henrot Versillé, C., Hernández Monteagudo, D., Herranz, S. R., Hildebrandt, E., Hivon, M., Hobson, W. A., Holme, G., Hurier, T. R., Jaffe, A. H., Jaffe, T., Jagemann, W. C., Jone, M., Juvela, E., Keihänen, I., Khamitov, T. S., Kisner, R., Kneissl, J., Knoche, L., Knox, M., Kunz, H., Kurki Suonio, G., Lagache, A., Lähteenmäki, J. M., Lamarre, A., Lasenby, C. R., Lawrence, M., Le Jeune, R., Leonardi, P. B., Lilje, M., López Caniego, G., Luzzi, J. F., Macías Pérez, D., Maino, N., Mandolesi, M., Mari, F., Marleau, D. J., Marshall, E., Martínez González, S., Masi, M., Massardi, S., Matarrese, P., Mazzotta, S., Mei, A., Melchiorri, J. B., Melin, L., Mende, A., Mennella, S., Mitra, M. A., Miville Deschêne, A., Moneti, L., Montier, G., Morgante, D., Mortlock, D., Munshi, J. A., Murphy, P., Naselsky, F., Nati, P., Natoli, H. U., Nørgaard Nielsen, F., Noviello, D., Novikov, I., Novikov, S., Osborne, F., Pajot, D., Paoletti, F., Pasian, G., Patanchon, O., Perdereau, L., Perotto, F., Perrotta, F., Piacentini, M., Piat, E., Pierpaoli, R., Piffaretti, S., Plaszczynski, E., Pointecouteau, G., Polenta, N., Ponthieu, L., Popa, T., Poutanen, G. W., Pratt, S., Prunet, J. L., Puget, J. P., Rachen, R., Rebolo, M., Reinecke, M., Remazeille, C., Renault, S., Ricciardi, T., Riller, I., Ristorcelli, G., Rocha, M., Roman, C., Rosset, M., Rossetti, J. A., Rubiño Martín, B., Rusholme, M., Sandri, G., Savini, D., Scott, G. F., Smoot, J. L., Starck, R., Sudiwala, R., Sunyaev, D., Sutton, A. S., Suur Uski, J. F., Sygnet, J. A., Tauber, L., Terenzi, L., Toffolatti, M., Tomasi, M., Tristram, J., Tuovinen, L., Valenziano, B., Van Tent, P., Vielva, F., Villa, N., Vittorio, L. A., Wade, B. D., Wandelt, N., Welikala, D., Yvon, A., Zacchei, S., Zaroubi, A., Zonca, and Universidad de Cantabria

Subjects
SAMPLE, Large-scale structure of Universe, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Triple system, Astronomy, A3558, Galaxies: clusters: general, Galaxies: clusters: individual: PLCKG214.6+37.0, Astrophysics, PLCKG214.6+37.0, 01 natural sciences, galaxies, clusters: general [galaxies], CORE, 010303 astronomy & astrophysics, media_common, Physics, Sigma, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, symbols, large-scale structure of Universe, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, education, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, MASS, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], clusters: individual: PLCKG214.6+37.0 [galaxies], symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, galaxies: clusters: general, NEARBY, Supercluster, 0103 physical sciences, Cluster (physics), PRE-LAUNCH STATUS, REXCESS, Planck, Galaxy cluster, XMM-NEWTON, SPECTRUM, X rays, 010308 nuclear & particles physics, Astronomy and Astrophysics, PROFILES, Cosmology and Extragalactic Astrophysics, Galaxies, 115 Astronomy, Space science, Redshift, Space and Planetary Science, Sky, galaxies: clusters: individual: PLCKG214.6+37.0
Abstract

The survey of galaxy clusters performed by Planck through the Sunyaev-Zeldovich effect has already discovered many interesting objects, thanks to its full sky coverage. One of the SZ candidates detected inthe early months of the mission near to the signal-to-noise threshold, PLCKG214.6+37.0, was later revealed by XMM-Newton to be a triple system of galaxy clusters. We present the results from a deep XMM-Newton re-observation of PLCKG214.6+37.0, part of a multi-wavelength programme to investigate Planck discovered superclusters. The characterisation of the physical properties of the three components has allowed us to build a template model to extract the total SZ signal of this system with Planck data. We have partly reconciled the discrepancy between the expected SZ signal derived from X-rays and the observed one, which are now consistent within 1.2σ. We measured the redshift of the three components with the iron lines in the X-ray spectrum, and confirm that the three clumps are likely part of the same supercluster structure. The analysis of the dynamical state of the three components, as well as the absence of detectable excess X-ray emission, suggests that we are witnessing the formation of a massive cluster at an early phase of interaction. © ESO, 2013., The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN and JA (Spain); Tekes, AoF and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and DEISA (EU).

Published
2013
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29. Age-related changes in sleep spindle characteristics in individuals over 75 years of age: a retrospective and comparative study.

Author

Poirson B, Vandel P, Bourdin H, and Galli S

Subjects
Humans, Aged, Retrospective Studies, Male, Female, Aged, 80 and over, Age Factors, Sleep physiology, Electroencephalography methods, Polysomnography methods, Sleep Stages physiology, Aging physiology
Abstract

Background: Sleep and its architecture are affected and changing through the whole lifespan. We know main modifications of the macro-architecture with a shorter sleep, occurring earlier and being more fragmented. We have been studying sleep micro-architecture through its pathological modification in sleep, psychiatric or neurocognitive disorders whereas we are still unable to say if the sleep micro-architecture of an old and very old person is rather normal, under physiological changes, or a concern for a future disorder to appear. We wanted to evaluate age-related changes in sleep spindle characteristics in individuals over 75 years of age compared with younger individuals., Methods: This was an exploratory study based on retrospective and comparative laboratory-based polysomnography data registered in the normal care routine for people over 75 years of age compared to people aged 65-74 years. We were studying their sleep spindle characteristics (localization, density, frequency, amplitude, and duration) in the N2 and N3 sleep stages. ANOVA and ANCOVA using age, sex and OSA were applied., Results: We included 36 participants aged > 75 years and 57 participants aged between 65 and 74 years. An OSA diagnosis was most common in both groups. Older adults receive more medication to modify their sleep. Spindle localization becomes more central after 75 years of age. Changes in the other sleep spindle characteristics between the N2 and N3 sleep stages and between the slow and fast spindles were conformed to literature data, but age was a relevant modifier only for density and duration., Conclusion: We observed the same sleep spindle characteristics in both age groups except for localization. We built our study on a short sample, and participants were not free of all sleep disorders. We could establish normative values through further studies with larger samples of people without any sleep disorders to understand the modifications in normal aging and pathological conditions and to reveal the predictive biomarker function of sleep spindles., (© 2024. The Author(s).)

Published
2024
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30. A randomized trial to evaluate the effects of a supervised exercise program on insomnia in patients with non-metastatic breast cancer undergoing chemotherapy: design of the FATSOMCAN study.

Author

Drozd C, Curtit E, Jacquinot Q, Marquine C, Mansi L, Chaigneau L, Dobi E, Viot J, Meynard G, Paillard MJ, Goujon M, Roux P, Vernerey D, Gillet V, Bourdin H, Galli S, Meneveau N, and Mougin F

Subjects
Humans, Female, Exercise, Exercise Therapy, Sleep, Treatment Outcome, Sleep Initiation and Maintenance Disorders etiology, Sleep Initiation and Maintenance Disorders therapy, Breast Neoplasms complications, Breast Neoplasms drug therapy
Abstract

Background: Up to 70% of breast cancer patients report symptoms of insomnia during and after treatment. Despite the ubiquity of insomnia symptoms, they are under-screened, under-diagnosed and poorly managed in breast cancer patients. Sleep medications treat symptoms but are ineffective to cure insomnia. Other approaches such as cognitive behavioral therapy for insomnia, relaxation through yoga and mindfulness are often not available for patients and are complex to implement. An aerobic exercise program could be a promising treatment and a feasible option for insomnia management in breast cancer patients, but few studies have investigated the effects of such a program on insomnia., Methods: This multicenter, randomized clinical trial evaluate the effectiveness of a moderate to high intensity physical activity program (45 min, 3 times per week), lasting 12 weeks, in minimizing insomnia, sleep disturbances, anxiety/depression, fatigue, and pain, and in enhancing cardiorespiratory fitness. Patients with breast cancer be recruited from six hospitals in France and randomly allocated to either the "training" or the "control" group. Baseline assessments include questionnaires [Insomnia Severity Index (ISI), Pittsburgh Sleep Quality Index questionnaire (PSQI), Hospital Anxiety Depression Scale (HADS), Epworth Sleepiness Scale (ESS)], home polysomnography (PSG), and 7-day actigraphy coupled with completion of a sleep diary. Assessments are repeated at the end of training program and at six-month follow-up., Discussion: This clinical trial will provide additional evidence regarding the effectiveness of physical exercise in minimizing insomnia during and after chemotherapy. If shown to be effective, exercise intervention programs will be welcome addition to the standard program of care offered to patients with breast cancer receiving chemotherapy., Trial Registration: National Clinical Trials Number (NCT04867096)., (© 2023. The Author(s).)

Published
2023
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31. Detection of anti-correlation of hot and cold baryons in galaxy clusters.

Author

Farahi A, Mulroy SL, Evrard AE, Smith GP, Finoguenov A, Bourdin H, Carlstrom JE, Haines CP, Marrone DP, Martino R, Mazzotta P, O'Donnell C, and Okabe N

Abstract

The largest clusters of galaxies in the Universe contain vast amounts of dark matter, plus baryonic matter in two principal phases, a majority hot gas component and a minority cold stellar phase comprising stars, compact objects, and low-temperature gas. Hydrodynamic simulations indicate that the highest-mass systems retain the cosmic fraction of baryons, a natural consequence of which is anti-correlation between the masses of hot gas and stars within dark matter halos of fixed total mass. We report observational detection of this anti-correlation based on 4 elements of a 9 × 9-element covariance matrix for nine cluster properties, measured from multi-wavelength observations of 41 clusters from the Local Cluster Substructure Survey. These clusters were selected using explicit and quantitative selection rules that were then encoded in our hierarchical Bayesian model. Our detection of anti-correlation is consistent with predictions from contemporary hydrodynamic cosmological simulations that were not tuned to reproduce this signal.

Published
2019
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