Chandra and FUSE discovery of the Local IGM Filamen

Details Chandra and FUSE discovery of the Local IGM Filamen Chandra and FUSE discovery of the Local IGM Filamen

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprb17111n&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Chandra and FUSE spectra of the blazar PKS 2155-304 show resonant absorption from local highly ionized gas. The derived physical properties of this gas strongly suggest an extragalactic origin (Nicastro et al., 2002). Based on this evidence, and on the statistical analysis of FUSE and Chandra spectra of 12 other randomly distributed AGNs, we propose (Nicastro et al., in preparation) that the absorption lines from such highly ionized medium are tracking an IGM filament of warm gas. This filament is collapsing towards our galaxy, in the Virgo direction, consistent with what is predicted by detailed hydrodynamical simulation for the formation of structure in our own supercluster environment.

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