6.6k citations · 38.9k across the 220 of their papers we have counts for
24 papers · 1 filter
The Quijote CMB Experiment
J. A. Rubino-Martin, R. Rebolo, M. Tucci +37
We present the current status of the QUIJOTE (Q-U-I JOint TEnerife) CMB Experiment, a new instrument which will start operations early 2009 at Teide Observatory, with the aim of ch…
Blind and non-blind source detection in WMAP 5-year maps
M. Massardi, M. López-Caniego, J. González-Nuevo +3
We have analyzed the efficiency in source detection and flux density estimation of blind and non-blind detection techniques exploiting the MHW2 filter applied to the Wilkinson Micr…
A novel multi-frequency technique for the detection of point sources in Cosmic Microwave Background maps
D. Herranz, M. Lopez-Caniego, J. L. Sanz +1
In this work we address the problem of simultaneous multi-frequency detection of extragalactic point sources in maps of the Cosmic Microwave Background. We apply a new linear filte…
Matrix Filters for the Detection of Extragalactic Point Sources in Cosmic Microwave Background Images
D. Herranz, J. L. Sanz
In this paper we introduce a new linear filtering technique, the so-called matrix filters, that maximizes the signal-to-interference ratio of compact sources of unknown intensity e…
Component separation methods for the Planck mission
S. M. Leach, J. -F. Cardoso, C. Baccigalupi +27
The Planck satellite will map the full sky at nine frequencies from 30 to 857 GHz. The CMB intensity and polarization that are its prime targets are contaminated by foreground emis…
Statistical properties of extragalactic sources in the New Extragalactic WMAP Point Source (NEWPS) catalogue
J. González-Nuevo, M. Massardi, F. Argüeso +5
We present results on spectral index distributions, number counts, redshift distribution and other general statistical properties of extragalactic point sources in the NEWPS5 sampl…
Observing high redshift galaxy clusters through lensing of the Ostriker-Vishniac effect
J. M. Diego, D. Herranz
In this paper we study the possibility of detecting lensing signals in high-resolution and high-sensitivity CMB experiments. At scales below 1 arcmin, the CMB background is dominat…
Non-blind catalogue of extragalactic point sources from the Wilkinson Microwave Anisotropy Probe (WMAP) first 3--year survey data
M. Lopez-Caniego, J. Gonzalez-Nuevo, D. Herranz +5
We have used the MHW2 filter to obtain estimates of the flux densities at the WMAP frequencies of a complete sample of 2491 sources, mostly brighter than 500 mJy at 5 GHz, distribu…
Wavelets on the sphere. Application to the detection problem
J. L. Sanz, D. Herranz, M. Lopez-Caniego +1
A new method is presented for the construction of a natural continuous wavelet transform on the sphere. It incorporates the analysis and synthesis with the same wavelet and the def…
Statistical analysis of undetected point sources in cosmic microwave background maps
F. Argueso, J. L. Sanz, R. B. Barreiro +2
Cosmic microwave background (CMB) temperature anisotropies follow a Gaussian statistical distribution in the standard inflationary model, but there are non-Gaussian contributions d…
Comparison of filters for the detection of point sources in Planck simulations
M. Lopez-Caniego, D. Herranz, J. Gonzalez-Nuevo +5
We study the detection of extragalactic point sources in two-dimensional flat simulations for all the frequencies of the forthcoming ESA's Planck mission. In this work we have used…
The Mexican Hat Wavelet Family. Application to point source detection in CMB maps
J. Gonzalez-Nuevo, F. Argueso, M. Lopez-Caniego +4
We propose a new detection technique in the plane based on an isotropic wavelet family. This family is naturally constructed as an extension of the Gaussian-Mexican Hat Wavelet pai…
Some comments on the note "Some comments on the paper 'Filter design for the detection of compact sources based on the Neyman-Pearson detector' by M. Lopez-Caniego et. al (2005, MNRAS 359, 993)" by R. Vio and P. Andreani (astroph/0509394)
M. Lopez-Caniego, D. Herranz, R. B. Barreiro +1
In this note we stress the necessity of a careful check of the arguments used by Vio & Andreani (2005) (VA hereinafter) to criticise the superior performance of the biparametric sc…
Filter design for the detection of compact sources based on the Neyman-Pearson detector
M. Lopez-Caniego, D. Herranz, R. B. Barreiro +1
This paper considers the problem of compact source detection on a Gaussian background in 1D. Two aspects of this problem are considered: the design of the detector and the filterin…
A Bayesian approach to filter design: detection of compact sources
M. Lopez-Caniego, D. Herranz, R. B. Barreiro +1
We consider filters for the detection and extraction of compact sources on a background. We make a one-dimensional treatment (though a generalization to two or more dimensions is p…
Strong Lensing Analysis of A1689 from Deep Advanced Camera Images
Tom Broadhurst, Narciso Benitez, Dan Coe +6
We analyse deep multi-colour Advanced Camera images of the largest known gravitational lens, A1689. Radial and tangential arcs delineate the critical curves in unprecedented detail…
The estimation of the SZ effects with unbiased multifilters
D. Herranz, J. L. Sanz, R. B. Barreiro +1
In this work we study the performance of linear multifilters for the estimation of the amplitudes of the thermal and kinematic Sunyaev-Zel'dovich effects. We show that when both ef…
An alpha-stable approach to the study of the P(D) distribution of unresolved point sources in CMB sky maps
D. Herranz, E. E. Kuruoglu, L. Toffolatti
We present a new approach to the statistical study and modelling of number counts of faint point sources in astronomical images, i.e. counts of sources whose flux falls below the d…
Comparing filters for the detection of point sources
R. B. Barreiro, J. L. Sanz, D. Herranz +1
This paper considers filters (the Mexican hat wavelet, the matched and the scale-adaptive filters) that optimize the detection/separation of point sources on a background. We make…
Scale-Adaptive filters for the detection/separation of compact sources
D. Herranz, J. L. Sanz, R. B. Barreiro +1
This paper presents scale-adaptive filters that optimize the detection/separation of compact sources on a background. We assume that the sources have a multiquadric profile, i. e.…
Filtering techniques for the detection of Sunyaev-Zel'dovich clusters in multifrequency CMB maps
D. Herranz, J. L. Sanz, M. P. Hobson +4
The problem of detecting Sunyaev-Zel'dovich (SZ) clusters in multifrequency CMB observations is investigated using a number of filtering techniques. A multifilter approach is intro…
Point source detection and extraction from simulated Planck TOD using optimal adaptive filters
D. Herranz, J. Gallegos, J. L. Sanz +1
Wavelet-related techniques have proven useful in the processing and analysis of one and two dimensional data sets (spectra in the former case, images in the latter). In this work w…
Optimal detection of sources on a homogeneous and isotropic background
J. L. Sanz, D. Herranz, E. Martinez-Gonzalez
This paper introduces the use of pseudo-filters that optimize the detection/extraction of sources on a background. We assume as a first approach that such sources are described by…
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution
A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel +21
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detect…