Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..666..199t&link_type=abstract
THE EMERGENCE OF COSMIC STRUCTURE: Thirteenth Astrophysics Conference. AIP Conference Proceedings, Volume 666, pp. 199-202 (200
Astronomy and Astrophysics
Astrophysics
Galaxy Clusters, Intergalactic Matter, Quasar Absorption And Emission-Line Systems, Lyman Forest
Scientific paper
Filamentary gas spanning the region between the galaxy clusters Abell 3391 and Abell 3395 has been detected using ASCA and ROSAT archived data. The gas has a minimum flux of 1.3 × 10-12 erg cm-2 s-1 (0.8 - 10 keV). Within this filament resides a galaxy group for which a flux of (2.0 +/- 0.3) × 1013 erg cm-2s-1 (0.8 - 10 keV) is determined. An analysis using raytracing determines light scattered into the filamentary region contributes 13% of the count-rate. The structure in which the filamentary gas resides is postulated to be a filament aligned nearly lengthwise with the line of sight. Identification of this structure as a filament is based on the angular and redshift distribution of surrounding galaxies and clusters. The distribution is compatible with the structure being a quasi-linear structure tilted to the line-of-sight such that the ratio of the depth to the tangential distance is between 6:1 and 18:1. The filamentary gas contains on the order of 1013 Msolar of gas which is close to 2% of the total mass of the system.
Henriksen Mark
Tittley Eric
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