DSpace
 

RRI Digital Repository >
04. Astronomy and Astrophysics >
Research Papers (A&A) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1498

Title: Sunyaev-Zel'dovich distortion from early galactic winds
Authors: Majumdar, Subhabrata
Nath, Biman B.
Chiba, Masashi
Keywords: GALAXIES: FORMATION
INTERGALACTIC MEDIUM
COSMIC MICROWAVE BACKGROUND
Issue Date: Jun-2001
Publisher: Blackwell Publishing for the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 2001, Vol.324, p537-546
Abstract: We consider the distortion in the cosmic microwave background (CMB) resulting from galactic winds at high redshift. Winds outflowing from galaxies have been hypothesized to be possible sources of metals in the intergalactic medium, which is known to have been enriched to 10-2.5Zsolar at z~3. We model these winds as functions of mass of the parent galaxy and redshift, assuming that they activate at a common initial redshift, zin, and calculate the mean y-distortion and the angular power spectrum of the distortion in the CMB. We find that the thermal Sunyaev-Zel'dovich (SZ) effect resulting from the winds is consistent with previous estimates. The distortion arising from the kinetic SZ (kSZ) effect is, however, found to be more important than the thermal SZ (tSZ) effect. We find that the distortion resulting from galactic winds is an important contribution to the power spectrum of distortion at very small angular scales (l~104). We also find that the power spectrum resulting from clustering dominates the Poisson power spectrum for l<=(4-5)×105. We show explicitly how the combined power spectrum from wind dominates over that of clusters at 217GHz, relevant for PLANCK. We also show how these constraints change when the efficiency of the winds is varied.
Description: Sorry, the full text of this article is not available here. Please click on the alternative location to access it.
URI: http://hdl.handle.net/2289/1498
ISSN: 0035-8711
Alternative Location: http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2001MNRAS.324..537M&data_type=PDF_HIGH&type=PRINTER&filetype=.pdf
http://adsabs.harvard.edu/cgi-bin/bib_query?2001MNRAS.324..537M
Copyright: (2001) Royal Astronomical Society.
Appears in Collections:Research Papers (A&A)

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

    RRI Library DSpace