Statistical properties of SZ and X-ray cluster detections
نویسندگان
چکیده
منابع مشابه
Cosmology with SZ and X-ray cluster surveys
Hydrodynamical simulations are used in combination with the PressSchechter expression to simulate Sunyaev-Zel’dovich (SZ) galaxy cluster sky maps. These are used to gauge the ability of future SZ observations to provide information about the cosmological parameters H0, ΩM, and the gas fraction fg in clusters. This work concentrates on prospects for AMI, the Arcminute MicroKelvin Imager, a new t...
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Context. The interpretation of X-ray detections from Herbig Ae/Be stars is disputed as it is not clear if these intermediate-mass pre-main sequence stars are able to drive a dynamo and ensuing phenomena of magnetic activity. Alternative X-ray production mechanisms, related to stellar winds, star-disk magnetospheres, or unresolved late-type T Tauri star companions have been proposed. Aims. The c...
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We present some results from an archival VLA study of ultraluminous X-ray sources (ULXs). These unresolved non-nuclear X-ray sources have luminosities (LX ≥ 10 ergs s) which may require somewhat exotic explanations, such as intermediate mass black holes or super-Eddington accretion. Radio emission is a powerful way to investigate such sources, through radio morphology and the implications made ...
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We present in this letter a high resolution (22 " FWHM) extended map at 2.1mm of the Sunyaev-Zel'dovich effect toward the most luminous X-ray cluster, RXJ1347-1145. These observations have been performed with the DIABOLO photometer working at the focus of the 30m IRAM radiotelescope. We have derived a projected gas mass of (1.1 ± 0.1) × 10 14 h −5/2 50 M ⊙ within an angular radius of θ = 74 ′′ ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2008
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200809550