Complex Physics in Cluster Cores: Showstopper for the Use of Clusters for Cosmology?
The influence of cool galaxy cluster cores on the X-ray luminosity--gravitational mass relation is studied with Chandra observations of 64 clusters in the HIFLUGCS sample. As preliminary results we find (i) a significant offset of cool core (CC) clusters to the high luminosity (or low mass) side com...
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| Main Authors | , |
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| Format | Journal Article |
| Language | English |
| Published |
16.11.2006
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| Abstract | The influence of cool galaxy cluster cores on the X-ray
luminosity--gravitational mass relation is studied with Chandra observations of
64 clusters in the HIFLUGCS sample. As preliminary results we find (i) a
significant offset of cool core (CC) clusters to the high luminosity (or low
mass) side compared to non-cool core (NCC) clusters, (ii) a smaller scatter of
CC clusters compared to NCC clusters, (iii) a decreasing fraction of CC
clusters with increasing cluster mass, (iv) a reduced scatter in the
luminosity--mass relation for the entire sample if the luminosity is scaled
properly with the central entropy. The implications of these results on the
intrinsic scatter are discussed. |
|---|---|
| AbstractList | The influence of cool galaxy cluster cores on the X-ray
luminosity--gravitational mass relation is studied with Chandra observations of
64 clusters in the HIFLUGCS sample. As preliminary results we find (i) a
significant offset of cool core (CC) clusters to the high luminosity (or low
mass) side compared to non-cool core (NCC) clusters, (ii) a smaller scatter of
CC clusters compared to NCC clusters, (iii) a decreasing fraction of CC
clusters with increasing cluster mass, (iv) a reduced scatter in the
luminosity--mass relation for the entire sample if the luminosity is scaled
properly with the central entropy. The implications of these results on the
intrinsic scatter are discussed. |
| Author | Reiprich, Thomas H Hudson, Daniel S |
| Author_xml | – sequence: 1 givenname: Thomas H surname: Reiprich fullname: Reiprich, Thomas H – sequence: 2 givenname: Daniel S surname: Hudson fullname: Hudson, Daniel S |
| BackLink | https://doi.org/10.48550/arXiv.astro-ph/0611514$$DView paper in arXiv https://doi.org/10.1007/978-3-540-73484-0_70$$DView published paper (Access to full text may be restricted) |
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| Snippet | The influence of cool galaxy cluster cores on the X-ray
luminosity--gravitational mass relation is studied with Chandra observations of
64 clusters in the... |
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| SubjectTerms | Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics |
| Title | Complex Physics in Cluster Cores: Showstopper for the Use of Clusters for Cosmology? |
| URI | https://arxiv.org/abs/astro-ph/0611514 |
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