A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

Richard Saunders; Rüdiger Kneissl; Keith Grainge; William F. Grainger; Michael E. Jones; Alessia Maggi; Rhiju Das; Alastair C. Edge; Anthony N. Lasenby; G. G. Pooley; Shigeru J. Miyoshi; Taisuke Tsuruta; Koujun Yamashita; Yuzuru Tawara; Akihiro Furuzawa; Akihiro Harada; Izamu Hatsukade

doi:10.1046/j.1365-8711.2003.06467.x

A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

Richard Saunders, Rüdiger Kneissl, Keith Grainge, William F. Grainger, Michael E. Jones, Alessia Maggi, Rhiju Das, Alastair C. Edge, Anthony N. Lasenby, G. G. Pooley, Shigeru J. Miyoshi, Taisuke Tsuruta, Koujun Yamashita, Yuzuru Tawara, Akihiro Furuzawa, Akihiro Harada, Izamu Hatsukade

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Abstract

We present new Ryle Telescope (RT) observations of the Sunyaev-Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful subtraction. We use ASCA observations to measure the gas temperature and a ROSAT HRI image to model the gas density distribution. Normalizing the gas distribution to fit the RT visibilities returns a value of HQ of 77-15+19 km s-1 Mpc-1 (1σ errors) for an Einstein - de Sitter universe, or 85-17+20 km s-1 Mpc-1 for a flat model with ΩA = 0.7. The errors quoted include estimates of the effects of the principal errors: noise in the SZ measurement, gas temperature uncertainty and line-of-sight depth uncertainty.

Original language	English
Pages (from-to)	937-940
Number of pages	3
Journal	Monthly Notices of the Royal Astronomical Society
Volume	341
Issue number	3
DOIs	https://doi.org/10.1046/j.1365-8711.2003.06467.x
Publication status	Published - 21 May 2003

Keywords

Cosmic microwave background
Cosmology: Observations
Distance scale
Galaxies: Clusters: Individual: A773
X-rays: General

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Saunders, R., Kneissl, R., Grainge, K., Grainger, W. F., Jones, M. E., Maggi, A., Das, R., Edge, A. C., Lasenby, A. N., Pooley, G. G., Miyoshi, S. J., Tsuruta, T., Yamashita, K., Tawara, Y., Furuzawa, A., Harada, A., & Hatsukade, I. (2003). A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773. Monthly Notices of the Royal Astronomical Society, 341(3), 937-940. https://doi.org/10.1046/j.1365-8711.2003.06467.x

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title = "A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773",

abstract = "We present new Ryle Telescope (RT) observations of the Sunyaev-Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful subtraction. We use ASCA observations to measure the gas temperature and a ROSAT HRI image to model the gas density distribution. Normalizing the gas distribution to fit the RT visibilities returns a value of HQ of 77-15+19 km s-1 Mpc-1 (1σ errors) for an Einstein - de Sitter universe, or 85-17+20 km s-1 Mpc-1 for a flat model with ΩA = 0.7. The errors quoted include estimates of the effects of the principal errors: noise in the SZ measurement, gas temperature uncertainty and line-of-sight depth uncertainty.",

keywords = "Cosmic microwave background, Cosmology: Observations, Distance scale, Galaxies: Clusters: Individual: A773, X-rays: General",

author = "Richard Saunders and R{\"u}diger Kneissl and Keith Grainge and Grainger, {William F.} and Jones, {Michael E.} and Alessia Maggi and Rhiju Das and Edge, {Alastair C.} and Lasenby, {Anthony N.} and Pooley, {G. G.} and Miyoshi, {Shigeru J.} and Taisuke Tsuruta and Koujun Yamashita and Yuzuru Tawara and Akihiro Furuzawa and Akihiro Harada and Izamu Hatsukade",

year = "2003",

month = may,

day = "21",

doi = "10.1046/j.1365-8711.2003.06467.x",

language = "English",

volume = "341",

pages = "937--940",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

number = "3",

}

Saunders, R, Kneissl, R, Grainge, K, Grainger, WF, Jones, ME, Maggi, A, Das, R, Edge, AC, Lasenby, AN, Pooley, GG, Miyoshi, SJ, Tsuruta, T, Yamashita, K, Tawara, Y, Furuzawa, A, Harada, A & Hatsukade, I 2003, 'A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773', Monthly Notices of the Royal Astronomical Society, vol. 341, no. 3, pp. 937-940. https://doi.org/10.1046/j.1365-8711.2003.06467.x

TY - JOUR

T1 - A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

AU - Saunders, Richard

AU - Kneissl, Rüdiger

AU - Grainge, Keith

AU - Grainger, William F.

AU - Jones, Michael E.

AU - Maggi, Alessia

AU - Das, Rhiju

AU - Edge, Alastair C.

AU - Lasenby, Anthony N.

AU - Pooley, G. G.

AU - Miyoshi, Shigeru J.

AU - Tsuruta, Taisuke

AU - Yamashita, Koujun

AU - Tawara, Yuzuru

AU - Furuzawa, Akihiro

AU - Harada, Akihiro

AU - Hatsukade, Izamu

PY - 2003/5/21

Y1 - 2003/5/21

N2 - We present new Ryle Telescope (RT) observations of the Sunyaev-Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful subtraction. We use ASCA observations to measure the gas temperature and a ROSAT HRI image to model the gas density distribution. Normalizing the gas distribution to fit the RT visibilities returns a value of HQ of 77-15+19 km s-1 Mpc-1 (1σ errors) for an Einstein - de Sitter universe, or 85-17+20 km s-1 Mpc-1 for a flat model with ΩA = 0.7. The errors quoted include estimates of the effects of the principal errors: noise in the SZ measurement, gas temperature uncertainty and line-of-sight depth uncertainty.

AB - We present new Ryle Telescope (RT) observations of the Sunyaev-Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful subtraction. We use ASCA observations to measure the gas temperature and a ROSAT HRI image to model the gas density distribution. Normalizing the gas distribution to fit the RT visibilities returns a value of HQ of 77-15+19 km s-1 Mpc-1 (1σ errors) for an Einstein - de Sitter universe, or 85-17+20 km s-1 Mpc-1 for a flat model with ΩA = 0.7. The errors quoted include estimates of the effects of the principal errors: noise in the SZ measurement, gas temperature uncertainty and line-of-sight depth uncertainty.

KW - Cosmic microwave background

KW - Cosmology: Observations

KW - Distance scale

KW - Galaxies: Clusters: Individual: A773

KW - X-rays: General

U2 - 10.1046/j.1365-8711.2003.06467.x

DO - 10.1046/j.1365-8711.2003.06467.x

M3 - Article

SN - 1365-2966

VL - 341

SP - 937

EP - 940

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

A measurement of H0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773

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Keywords

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