Search Publications
The Australia Telescope Compact Array Broad-band Backend: description and first results
Wieringa, M. H.; Massardi, M.; Johnston, S. +30 more
Here, we describe the Compact Array Broad-band Backend (CABB) and present first results obtained with the upgraded Australia Telescope Compact Array (ATCA). The 16-fold increase in observing bandwidth, from 2 × 128 to 2 × 2048 MHz, high-bit sampling and the addition of 16 zoom windows (each divided into further 2048 channels) provide major improve…
Radio to infrared spectra of late-type galaxies with Planck and Wilkinson Microwave Anisotropy Probe data
Clements, D. L.; Davies, R. D.; Dickinson, C. +2 more
We use the Planck Early Release Compact Source Catalogue combined with Wilkinson Microwave Anisotropy Probe (WMAP) and other archival measurements to construct continuum spectra of three nearby dusty star-forming galaxies: Messier 82, NGC 253 and NGC 4945. We carry out a least-squares fit to the spectra using a combination of simple synchrotron, f…
The Planck-ATCA Co-eval Observations project: the bright sample
Bonaldi, Anna; de Zotti, Gianfranco; Massardi, Marcella +3 more
The Planck Australia Telescope Compact Array (Planck-ATCA) Co-eval Observations (PACO) have provided flux density measurements of well-defined samples of Australia Telescope 20 GHz (AT20G) radio sources at frequencies below and overlapping with Planck frequency bands, almost simultaneously with Planck observations. We have observed with the ATCA a…
X-ray calibration of Sunyaev-Zel'dovich scaling relations with the ACCEPT catalogue of galaxy clusters observed by Chandra
Comis, B.; de Petris, M.; Lamagna, L. +2 more
We explore the scaling relation between the flux of the Sunyaev-Zel'dovich (SZ) effect and the total mass of galaxy clusters using already reduced Chandra X-ray data present in the ACCEPT (Archive of Chandra Cluster Entropy Profile Tables) catalogue. The analysis is conducted over a sample of 226 objects, examining the relatively small scale corre…
The Planck-ATCA Coeval Observations project: the faint sample
Bonaldi, Anna; de Zotti, Gianfranco; Massardi, Marcella +3 more
The Planck-ATCA Coeval Observations (PACO) project collected data between 4.5 and 40 GHz for 482 sources selected within the Australia Telescope 20 GHz (AT20G) catalogue and observed with the Australia Telescope Compact Array. Observations were done almost simultaneously with the Planck satellite, in the period between 2009 July and 2010 August. I…
Further Sunyaev-Zel'dovich observations of two Planck ERCSC clusters with the Arcminute Microkelvin Imager
AMI Consortium; Olamaie, Malak; Davies, Matthew L. +16 more
We present follow-up observations of two galaxy clusters detected blindly via the Sunyaev-Zel'dovich (SZ) effect and released in the Planck Early Release Compact Source Catalogue. We use the Arcminute Microkelvin Imager, a dual-array 14-18 GHz radio interferometer. After radio source subtraction, we find a SZ decrement of integrated flux density -…
Cross-correlation between the cosmic microwave and infrared backgrounds for integrated Sachs-Wolfe detection
Lagache, Guilaine; Douspis, Marian; Ilić, Stéphane +2 more
We investigate the cross-correlation between the cosmic infrared background (CIB) and cosmic microwave background (CMB) anisotropies due to the integrated Sachs-Wolfe (ISW) effect. We first describe the CIB anisotropies using a linearly biased power spectrum, valid on the angular scales of interest. From this, we derive the theoretical angular pow…
The Simultaneous Medicina-Planck Experiment: data acquisition, reduction and first results
Bonavera, L.; Burigana, C.; Cuttaia, F. +13 more
The Simultaneous Medicina-Planck Experiment (SiMPlE) is aimed at observing a selected sample of 263 extragalactic and Galactic sources with the Medicina 32-m single-dish radio telescope in the same epoch as the Planck satellite observations.
The data, acquired with a frequency coverage down to 5 GHz and combined with Planck at frequencies abo…Discovery of the infrared counterpart of CXOU J174437.3-323222 in the field of IGR J17448-3232: a blazar candidate viewed through the Galactic Centre?
Maccarone, T. J.; Chaty, S.; Tomsick, J. A. +2 more
We present our near-infrared ESO-NTT KS band observations of the field of IGR J17448-3232 which show no extended emission consistent with the supernova remnant (SNR), but in which we identify a new counterpart, also visible in Spitzer images up to 24 µm, at the position of the X-ray point source, CXOU J174437.3-323222. Multiwavele…