A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667
We present a 40GHz (7.5 mm) raster scan image of a 3.6x2 degree region centered on the low redshift (z=0.055) cluster of galaxies Abell 3667. The cluster was observed during the Antarctic winter of 1999 using the Corona instrument (15.7' FWHM beam) on the Viper Telescope at the South Pole. The...
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ftunivsussex:oai:sro.sussex.ac.uk:15390 2023-07-30T03:59:17+02:00 A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 Cantalupo, CM Romer, Kathy Peterson, JB Gomez, PL Griffin, G Newcomb, M Nichol, R.C. 2002-12 http://sro.sussex.ac.uk/id/eprint/15390/ http://adsabs.harvard.edu/abs/2002astro.ph.12394C unknown Cantalupo, CM, Romer, Kathy, Peterson, JB, Gomez, PL, Griffin, G, Newcomb, M and Nichol, R.C. (2002) A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667. SAO/NASA Astrophysics Data System. arXiv:astro. Article PeerReviewed 2002 ftunivsussex 2023-07-11T20:11:19Z We present a 40GHz (7.5 mm) raster scan image of a 3.6x2 degree region centered on the low redshift (z=0.055) cluster of galaxies Abell 3667. The cluster was observed during the Antarctic winter of 1999 using the Corona instrument (15.7' FWHM beam) on the Viper Telescope at the South Pole. The Corona image of A3667 is one of the first direct (i.e. rather than interferometer) thermal Sunyaev-Zel'dovich effect images of a low redshift cluster. The brightness temperature decrement at the X-ray centroid (20h 12m 28.9s, -56 49 51 J2000) was measured to be $\\\\\\\\Delta T_{\\\\\\\\rm CMB}=-154\\\\\\\\mu K$. We have used the 40GHz map of A3667 in conjunction with a deep ROSAT PSPC (X-ray) image of the cluster, to make a measurement of the Hubble Constant. We find $H_0 = 64^{+96}_{-30}$ km s$^{-1}$ Mpc$^{-1}$ (68% confidence interval). Our $H_0$ calculation assumes that the cluster can be described using an isothermal, tri-axial ellipsoidal, $\\\\\\\\beta$-model and includes several new analysis techniques including an automated method to remove point sources from X-ray images with variable point spread functions, and an efficient method for determining the errors in multi-parameter maximum likelihood analyzes. The large errors on the $H_0$ measurement are primarily due to the statistical noise in the Corona image. We plan to increase the precision of our measurement by including additional clusters in our analysis and by increasing the sensitivity of the Viper SZE maps. Article in Journal/Newspaper Antarc* Antarctic South pole South pole University of Sussex: Sussex Research Online Antarctic The Antarctic South Pole Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) |
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University of Sussex: Sussex Research Online |
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ftunivsussex |
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unknown |
description |
We present a 40GHz (7.5 mm) raster scan image of a 3.6x2 degree region centered on the low redshift (z=0.055) cluster of galaxies Abell 3667. The cluster was observed during the Antarctic winter of 1999 using the Corona instrument (15.7' FWHM beam) on the Viper Telescope at the South Pole. The Corona image of A3667 is one of the first direct (i.e. rather than interferometer) thermal Sunyaev-Zel'dovich effect images of a low redshift cluster. The brightness temperature decrement at the X-ray centroid (20h 12m 28.9s, -56 49 51 J2000) was measured to be $\\\\\\\\Delta T_{\\\\\\\\rm CMB}=-154\\\\\\\\mu K$. We have used the 40GHz map of A3667 in conjunction with a deep ROSAT PSPC (X-ray) image of the cluster, to make a measurement of the Hubble Constant. We find $H_0 = 64^{+96}_{-30}$ km s$^{-1}$ Mpc$^{-1}$ (68% confidence interval). Our $H_0$ calculation assumes that the cluster can be described using an isothermal, tri-axial ellipsoidal, $\\\\\\\\beta$-model and includes several new analysis techniques including an automated method to remove point sources from X-ray images with variable point spread functions, and an efficient method for determining the errors in multi-parameter maximum likelihood analyzes. The large errors on the $H_0$ measurement are primarily due to the statistical noise in the Corona image. We plan to increase the precision of our measurement by including additional clusters in our analysis and by increasing the sensitivity of the Viper SZE maps. |
format |
Article in Journal/Newspaper |
author |
Cantalupo, CM Romer, Kathy Peterson, JB Gomez, PL Griffin, G Newcomb, M Nichol, R.C. |
spellingShingle |
Cantalupo, CM Romer, Kathy Peterson, JB Gomez, PL Griffin, G Newcomb, M Nichol, R.C. A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
author_facet |
Cantalupo, CM Romer, Kathy Peterson, JB Gomez, PL Griffin, G Newcomb, M Nichol, R.C. |
author_sort |
Cantalupo, CM |
title |
A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
title_short |
A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
title_full |
A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
title_fullStr |
A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
title_full_unstemmed |
A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667 |
title_sort |
joint sunyaevzel'dovich effect and x-ray analysis of abell 3667 |
publishDate |
2002 |
url |
http://sro.sussex.ac.uk/id/eprint/15390/ http://adsabs.harvard.edu/abs/2002astro.ph.12394C |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
Antarctic The Antarctic South Pole Hubble |
geographic_facet |
Antarctic The Antarctic South Pole Hubble |
genre |
Antarc* Antarctic South pole South pole |
genre_facet |
Antarc* Antarctic South pole South pole |
op_relation |
Cantalupo, CM, Romer, Kathy, Peterson, JB, Gomez, PL, Griffin, G, Newcomb, M and Nichol, R.C. (2002) A Joint SunyaevZel'dovich Effect and X-ray Analysis of Abell 3667. SAO/NASA Astrophysics Data System. arXiv:astro. |
_version_ |
1772810024213544960 |