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  Intracluster Dust and Far Infrared Emission

Popescu, C. C., Tuffs, R. J., Fischera, J., & Völk, H. J. (2001). Intracluster Dust and Far Infrared Emission. In M. Harwit, & M. G. Hauser (Eds.), The extragalactic infrared background and its cosmological implications: proceedings of the 24th General Assembly of the IAU held at Manchester, UK,15 - 18 August 2000 (pp. 67-67). San Francisco, Calif.: Astronomical Society of the Pacific.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-85BD-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-85BE-E
Genre: Conference Paper

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 Creators:
Popescu, Cristina C.1, Author              
Tuffs, Richard J.2, Author              
Fischera, Jörg1, Author              
Völk, Heinrich J.1, Author              
Affiliations:
1Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548              
2Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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 Abstract: We make predictions for the diffuse far-infrared (FIR) emission from dust in the intracluster medium (ICM) of the Virgo cluster. The dust injection rate from known sources in the cluster is unlikely to give rise to a detectable diffuse FIR IC emission. However, the outer regions of dynamically young clusters have a further potential source of IC grains since they are still accreting freshly infalling spiral galaxies which are presumably contained in an accreting intergalactic medium (IGM). We show that cosmics ray driven winds from the infalling spirals can inject grains into a subvirial IGM that is external to the observed X-ray-emitting ICM. Predictions for the Virgo cluster are generalised to other clusters, and the possibility of detection of dynamically young clusters at cosmological distances is discussed. Although dominated by discrete source emission from galactic disks, it is possible that diffuse sub-mm dust emission from the ICM could be detected in experiments similar to those designed to map the sub-mm excess due to the Sunyaev-Zeldovich effect in distant clusters. We further discuss the implications of our proposed scenario for the optical extinction in clusters, as well as for the properties and dust content of the IGM. Further implications for environmental effects on the chemical evolution of spiral galaxies are also considered.

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Language(s): eng - English
 Dates: 2001
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 56215
 Degree: -

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Title: The Extragalactic Infrared Background and its Cosmological Implications
Place of Event: Manchester, United Kingdom
Start-/End Date: 2000-08-15 - 2000-08-18

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Title: The extragalactic infrared background and its cosmological implications : proceedings of the 24th General Assembly of the IAU held at Manchester, UK,15 - 18 August 2000
Source Genre: Proceedings
 Creator(s):
Harwit, Martin, Editor
Hauser, Michael G., Editor
Affiliations:
-
Publ. Info: San Francisco, Calif. : Astronomical Society of the Pacific
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 67 - 67 Identifier: -