Temperature and Dark Matter profiles of Galaxy Groups

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dc.creatorGastaldello, F.
dc.creatorBuote, D.
dc.creatorHumphrey, P.
dc.creatorZappacosta, L.
dc.creatorBullock, J.
dc.creatorBrighenti, F.
dc.creatorMathews, W.
dc.date2005-10-19
dc.date2005-10-28
dc.date.accessioned2026-07-07T06:43:58Z
dc.date.available2026-07-07T06:43:58Z
dc.descriptionThe Chandra and XMM data for a sample of 19 relaxed groups/poor clusters, covering the temperature range 1-3 keV and selected to have the best available data, reveal a remarkable similarity in their temperature profile: cool cores outside of which the temperatures reach a peak for radii less than 0.1 of the virial radius and then decline. We fitted the derived mass profiles using an NFW model, which provides a good fit to the data when accounting for the central galaxy in the inner region. The concentration parameters and virial masses are in the range c = 5-22 and M = 2 x 10^13 - 4 x 10^14 solar masses, in general agreement with the concentrations found in numerical simulations.
dc.description2 pages, to appear in the proceedings for the conference "The X-ray Universe 2005", San Lorenzo del Escorial, Madrid; typo in one reference corrected
dc.identifierhttps://arxiv.org/abs/astro-ph/0510592
dc.identifierhttp://arxiv.org/abs/astro-ph/0510592
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102617
dc.subjectAstrophysics
dc.titleTemperature and Dark Matter profiles of Galaxy Groups
dc.typetext

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