Probing the gravitational potential of a nearby lensing cluster Abell 2104

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dc.creatorLiang, H.
dc.creatorLemonon, L.
dc.creatorValtchanov, I.
dc.creatorPierre, M.
dc.creatorSoucail, G.
dc.date2000-10-16
dc.date.accessioned2026-07-07T01:56:01Z
dc.date.available2026-07-07T01:56:01Z
dc.descriptionThe cluster Abell 2104 is one of the lowest redshift clusters (z=0.153) known to have a gravitational lensing arc. We present detailed analysis of the cluster properties such as the gravitational potential using the X-ray data from ROSAT (HRI) and ASCA, as well as optical imaging and spectroscopic data from the CFHT. The cluster is highly luminous in the X-ray with a bolometric luminosity of Lx ~3x10^{45} ergs/s and a high gas temperature of ~10.4 keV. The X-ray emission extending out to at least a radius of 1.46 Mpc, displays significant substructure. The total mass deduced from the X-ray data under the assumption of hydrostatic equilibrium and isothermal gas, is found to be M_tot(r<1.46Mpc) ~(8.0 +/- 0.8)x10^{14} solar mass. The gas fraction within a radius of 1.46 Mpc is ~5-10%. The cluster galaxy velocity distribution has a dispersion of 1200 +/- 200 km/s with no obvious evidence for substructure. The total mass within 1.46 Mpc, deduced from Jean's equation using the observed galaxy number density distribution and velocity dispersion, is found to be \~6.8x10^{14} solar mass to ~2.6x10^{15} solar mass marginally consistent with the X-ray deduced total mass.
dc.description13 pages, 10 postscript figures, use aa.sty, to appear in Astronomy and Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/0010297
dc.identifierhttp://arxiv.org/abs/astro-ph/0010297
dc.identifierA & A, 363, 440 (2000)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1851
dc.subjectAstrophysics
dc.titleProbing the gravitational potential of a nearby lensing cluster Abell 2104
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