APEX-SZ: The Atacama Pathfinder EXperiment Sunyaev-Zel'dovich Instrument
Magazine article, 2012
The APEX–SZ instrument was a millimetre-
wave (150 GHz) cryogenic receiver
for the APEX telescope designed
to observe galaxy clusters via the
Sunyaev–
Zel’dovich Effect (SZE). The
receiver contained a focal plane of
280 superconducting transition-edge
sensor bolometers equipped with a
frequency-
domain-multiplexed readout
system, and it played a key role in the
introduction of these new, robust, and
scalable technologies. With 1-arcminute
resolution, the instrument had a higher
instantaneous sensitivity and covered a
larger field of view (22 arcminutes) than
earlier generations of SZE instruments.
During its period of operation from 2007
to 2010, APEX–SZ was used to image
over 40 clusters and map fields overlapping
with external datasets. This paper
briefly describes the instrument and
data reduction procedure and presents
a cluster image gallery, as well as results
for the Bullet cluster, Abell 2204, Abell
2163, and a power spectrum analysis in
the XMM-LSS field.
APEX
Sunyaev-Zeldovich effect
clusters of galaxies
Author
D. Schwan
R. Kneissl
P. Ade
K. Basu
A. Bender
F. Bertoldi
H. Böhringer
H.-M. Cho
G. Chon
John Clarke
M. Dobbs
D. Ferrusca
D. Flanigan
N. Halverson
W. Holzapfel
Cathy Horellou
Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics
Daniel Johansson
Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics
B. Johnson
J. Kennedy
Z. Kermish
M. Klein
T. Lanting
A. Lee
M. Lueker
J. Mehl
K. Menten
D. Muders
F. Pacaud
T. Plagge
C. Reichardt
P. Richards
R. Schaaf
P. Schilke
M. Sommer
H. Spieler
C. Tucker
A. Weiss
B. Westbrook
O. Zahn
The Messenger
Vol. 147 7-12
Subject Categories
Astronomy, Astrophysics and Cosmology
Infrastructure
Onsala Space Observatory