The Cluster Abell 85 and its X-ray Filament Revisited by Chandra and XMM-Newton

  • Florence Durret
  • Gastão B. Lima Neto
  • William R. Forman
  • Eugene Churazov
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 309)


We have observed with XMM-Newton the extended 4 Mpc filament detected by the ROSAT PSPC south east of the cluster of galaxies Abell 85. We confirm the presence of an extended feature and find that the X-ray emission from the filament is best described by thermal emission with a temperature of ~ 2 keV. This is significantly lower than the ambient cluster medium, but is significantly higher than anticipated for a gas in a weakly bound extended filament. It is not clear whether this is a filament of diffuse emission or a chain of several groups of galaxies.


Diffuse Emission Photoelectric Absorption Galaxy Distribution Hydrogen Column Density Azimuthal Average 
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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • Florence Durret
    • 1
  • Gastão B. Lima Neto
    • 2
  • William R. Forman
    • 3
  • Eugene Churazov
    • 4
  1. 1.Institut d’Astrophysique de ParisParisFrance
  2. 2.Instituto Astronômico e Geofísico/USPSão Paulo/SPBrazil
  3. 3.Harvard Smithsonian Center for AstrophysicsCambridgeUSA
  4. 4.MPI für AstrophysikGarchingGermany

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