X‐Ray Line Tomography of AGN‐induced Motion in Clusters of Galaxies | Zendy

M. Brüggen | Zendy; M. Hoeft | Zendy; Mateusz Ruszkowski | Zendy

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X‐Ray Line Tomography of AGN‐induced Motion in Clusters of Galaxies

Author(s) -

M. Brüggen,

M. Hoeft,

Mateusz Ruszkowski

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/430732

Subject(s) - physics , active galactic nucleus , astrophysics , intracluster medium , line (geometry) , galaxy , galaxy cluster , kinetic energy , luminosity , cluster (spacecraft) , spectral line , doppler effect , x ray , emission spectrum , jet (fluid) , astronomy , optics , mechanics , geometry , mathematics , quantum mechanics , computer science , programming language

The thermal broadening of emission lines of heavy ions is small enough suchthat Doppler shifts due to bulk motions may be detected with the nextgeneration of X-ray observatories. This opens up the possibility to study gasvelocities in the intra-cluster medium. Here we study the effect of bulkmotions induced by a central active galactic nucleus (AGN) on the emissionlines around the FeXXV complex. We have modelled the evolution of AGN-inducedbubbles in a realistic cosmological framework and studied the resulting FeXXVline profiles. We found that in clusters with AGN feedback, motions induced bythe inflation of bubbles and their buoyant rise lead to distinct features inthe iron emission lines that are detectable with a spectral resolution of about10 eV. These observations will help to determine the mechanical energy thatresides in the bubbles and thereby the kinetic luminosity of the AGN.Comment: to appear in Ap

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