TY - JOUR
T1 - Submillimeter detection of the Sunyaev-Zeldovich effect toward the most luminous X-ray cluster at z = 0.45
AU - Komatsu, Eiichiro
AU - Kitayama, Tetsu
AU - Suto, Yasushi
AU - Hattori, Makoto
AU - Kawabe, Ryohei
AU - Matsuo, Hiroshi
AU - Schindler, Sabine
AU - Yoshikawa, Kohji
N1 - Funding Information:
We thank Iain Coulson, Nario Kuno, and Satoki Matsushita for their kind assistance during our observing runs at JCMT, Nobeyama 45 m, and the NMA, respectively. We also thank Nick Tothill for providing the calibration data for our observation and Tim Jenness, John Richer, Remo Tilanus, and Goeran Sandell for many fruitful comments and suggestions on data analysis via the SCUBADR mailing list. We are grateful to A. J. Barger for providing the SCUBA data of the Lockman Hole, to John Carlstrom for information on the flux of the central source at 28.5 GHz, and to an anonymous referee for several critical comments. The travel arrangements of E. K. to Hawaii were supported in part by the Satio Hayakawa Foundation in the Astronomical Society of Japan. T. K. acknowledges support from a JSPS (Japan Society for the Promotion of Science) fellowship. This research was supported in part by the Grants-in-Aid for the Center-of-Excellence (COE) Research of the Ministry of Education, Science, Sports, and Culture of Japan to RESCEU (No. 07CE2002).
PY - 1999/5/1
Y1 - 1999/5/1
N2 - We report on the detection of the Sunyaev-Zeldovich (SZ) signals toward the most luminous X-ray cluster RX J1347-1145 at the Nobeyama Radio Observatory (21 and 43 GHz) and with the James Clerk Maxwell Telescope (350 GHz). In particular, the latter is the first successful detection of the SZ temperature increment in the submillimeter band that resolved the profile of a cluster of galaxies. Both the observed spectral dependence and the radial profile of the SZ signals are fully consistent with those expected from the X-ray observation of the cluster. The combined analysis of the 21 and 350 GHz data reproduces the temperature and core radius of the cluster that are determined with ROSAT and ASCA when we adopt the slope of the density profile from the X-ray observations. Therefore, our present data provide the strongest and most convincing case for the detection of the submillimeter SZ signal from the cluster as well as in the Rayleigh-Jeans regime. We also discuss briefly the cosmological implications of the present results.
AB - We report on the detection of the Sunyaev-Zeldovich (SZ) signals toward the most luminous X-ray cluster RX J1347-1145 at the Nobeyama Radio Observatory (21 and 43 GHz) and with the James Clerk Maxwell Telescope (350 GHz). In particular, the latter is the first successful detection of the SZ temperature increment in the submillimeter band that resolved the profile of a cluster of galaxies. Both the observed spectral dependence and the radial profile of the SZ signals are fully consistent with those expected from the X-ray observation of the cluster. The combined analysis of the 21 and 350 GHz data reproduces the temperature and core radius of the cluster that are determined with ROSAT and ASCA when we adopt the slope of the density profile from the X-ray observations. Therefore, our present data provide the strongest and most convincing case for the detection of the submillimeter SZ signal from the cluster as well as in the Rayleigh-Jeans regime. We also discuss briefly the cosmological implications of the present results.
KW - Cosmic microwave background
KW - Cosmology: observations
KW - Distance scale
KW - Galaxies: clusters: individual (RX J1347.5-1145)
KW - X-rays: galaxies
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U2 - 10.1086/311983
DO - 10.1086/311983
M3 - Article
AN - SCOPUS:0033128061
SN - 0004-637X
VL - 516
SP - L1-L4
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 PART 2
ER -