We present the first image of the thermal Sunyaev-Zel'dovich effect (SZE)
obtained by the Atacama Large Millimeter/submillimeter Array (ALMA). Combining
7-m and 12-m arrays in Band 3, we create an SZE map toward a galaxy cluster
RXJ1347.5-1145 with 5 arc-second resolution (corresponding to the physical size
of 20 kpc/h), the highest angular and physical spatial resolutions achieved to
date for imaging the SZE, while retaining extended signals out to 40
arc-seconds. The 1-sigma statistical sensitivity of the image is 0.017 mJy/beam
or 0.12 mK_CMB at the 5 arc-second full width at half maximum. The SZE image
shows a good agreement with an electron pressure map reconstructed
independently from the X-ray data and offers a new probe of the small-scale
structure of the intracluster medium. Our results demonstrate that ALMA is a
powerful instrument for imaging the SZE in compact galaxy clusters with
unprecedented angular resolution and sensitivity. As the first report on the
detection of the SZE by ALMA, we present detailed analysis procedures including
corrections for the missing flux, to provide guiding methods for analyzing and
interpreting future SZE images by ALMA.
Description
[1607.08833] The Sunyaev-Zel'dovich Effect at Five Arc-seconds: RXJ1347.5-1145 Imaged by ALMA
%0 Generic
%1 kitayama2016sunyaevzeldovich
%A Kitayama, T.
%A Ueda, S.
%A Takakuwa, S.
%A Tsutsumi, T.
%A Komatsu, E.
%A Akahori, T.
%A Iono, D.
%A Izumi, T.
%A Kawabe, R.
%A Kohno, K.
%A Matsuo, H.
%A Ota, N.
%A Suto, Y.
%A Takizawa, M.
%A Yoshikawa, K.
%D 2016
%K alma cluster effect sz
%T The Sunyaev-Zel'dovich Effect at Five Arc-seconds: RXJ1347.5-1145 Imaged
by ALMA
%U http://arxiv.org/abs/1607.08833
%X We present the first image of the thermal Sunyaev-Zel'dovich effect (SZE)
obtained by the Atacama Large Millimeter/submillimeter Array (ALMA). Combining
7-m and 12-m arrays in Band 3, we create an SZE map toward a galaxy cluster
RXJ1347.5-1145 with 5 arc-second resolution (corresponding to the physical size
of 20 kpc/h), the highest angular and physical spatial resolutions achieved to
date for imaging the SZE, while retaining extended signals out to 40
arc-seconds. The 1-sigma statistical sensitivity of the image is 0.017 mJy/beam
or 0.12 mK_CMB at the 5 arc-second full width at half maximum. The SZE image
shows a good agreement with an electron pressure map reconstructed
independently from the X-ray data and offers a new probe of the small-scale
structure of the intracluster medium. Our results demonstrate that ALMA is a
powerful instrument for imaging the SZE in compact galaxy clusters with
unprecedented angular resolution and sensitivity. As the first report on the
detection of the SZE by ALMA, we present detailed analysis procedures including
corrections for the missing flux, to provide guiding methods for analyzing and
interpreting future SZE images by ALMA.
@misc{kitayama2016sunyaevzeldovich,
abstract = {We present the first image of the thermal Sunyaev-Zel'dovich effect (SZE)
obtained by the Atacama Large Millimeter/submillimeter Array (ALMA). Combining
7-m and 12-m arrays in Band 3, we create an SZE map toward a galaxy cluster
RXJ1347.5-1145 with 5 arc-second resolution (corresponding to the physical size
of 20 kpc/h), the highest angular and physical spatial resolutions achieved to
date for imaging the SZE, while retaining extended signals out to 40
arc-seconds. The 1-sigma statistical sensitivity of the image is 0.017 mJy/beam
or 0.12 mK_CMB at the 5 arc-second full width at half maximum. The SZE image
shows a good agreement with an electron pressure map reconstructed
independently from the X-ray data and offers a new probe of the small-scale
structure of the intracluster medium. Our results demonstrate that ALMA is a
powerful instrument for imaging the SZE in compact galaxy clusters with
unprecedented angular resolution and sensitivity. As the first report on the
detection of the SZE by ALMA, we present detailed analysis procedures including
corrections for the missing flux, to provide guiding methods for analyzing and
interpreting future SZE images by ALMA.},
added-at = {2016-08-01T09:54:30.000+0200},
author = {Kitayama, T. and Ueda, S. and Takakuwa, S. and Tsutsumi, T. and Komatsu, E. and Akahori, T. and Iono, D. and Izumi, T. and Kawabe, R. and Kohno, K. and Matsuo, H. and Ota, N. and Suto, Y. and Takizawa, M. and Yoshikawa, K.},
biburl = {https://www.bibsonomy.org/bibtex/25476537a72de5dbd0c8448baa5d7f386/miki},
description = {[1607.08833] The Sunyaev-Zel'dovich Effect at Five Arc-seconds: RXJ1347.5-1145 Imaged by ALMA},
interhash = {29ff18adcf325db9a1d8c580d2d059a3},
intrahash = {5476537a72de5dbd0c8448baa5d7f386},
keywords = {alma cluster effect sz},
note = {cite arxiv:1607.08833Comment: 20 pages, 13 figures. Accepted for publication in PASJ},
timestamp = {2016-08-01T09:54:30.000+0200},
title = {The Sunyaev-Zel'dovich Effect at Five Arc-seconds: RXJ1347.5-1145 Imaged
by ALMA},
url = {http://arxiv.org/abs/1607.08833},
year = 2016
}