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Applications of Signal Processing in Astrophysics and Cosmology

  1. Research Article

    Editorial

    Ercan E. Kuruoglu and Carlo Baccigalupi

    EURASIP Journal on Advances in Signal Processing 2005 2005:274312

    Published on: 14 September 2005

  2. Research Article

    Cosmological Non-Gaussian Signature Detection: Comparing Performance of Different Statistical Tests

    Currently, it appears that the best method for non-Gaussianity detection in the cosmic microwave background (CMB) consists in calculating the kurtosis of the wavelet coefficients. We know that wavelet-kurtosis...

    J. Jin, J. -L. Starck, D. L. Donoho, N. Aghanim and O. Forni

    EURASIP Journal on Advances in Signal Processing 2005 2005:297184

    Published on: 14 September 2005

  3. Research Article

    Separation of Correlated Astrophysical Sources Using Multiple-Lag Data Covariance Matrices

    This paper proposes a new strategy to separate astrophysical sources that are mutually correlated. This strategy is based on second-order statistics and exploits prior information about the possible structure ...

    L. Bedini, D. Herranz, E. Salerno, C. Baccigalupi, E.E. Kuruoğlu and A. Tonazzini

    EURASIP Journal on Advances in Signal Processing 2005 2005:190845

    Published on: 14 September 2005

  4. Research Article

    Blind Component Separation in Wavelet Space: Application to CMB Analysis

    It is a recurrent issue in astronomical data analysis that observations are incomplete maps with missing patches or intentionally masked parts. In addition, many astrophysical emissions are nonstationary proce...

    Y. Moudden, J.-F. Cardoso, J.-L. Starck and J. Delabrouille

    EURASIP Journal on Advances in Signal Processing 2005 2005:484606

    Published on: 14 September 2005

  5. Research Article

    Adaptive DFT-Based Interferometer Fringe Tracking

    An automatic interferometer fringe tracking system has been developed, implemented, and tested at the Infrared Optical Telescope Array (IOTA) Observatory at Mount Hopkins, Arizona. The system can minimize the ...

    Edward Wilson, Ettore Pedretti, Jesse Bregman, Robert W. Mah and Wesley A. Traub

    EURASIP Journal on Advances in Signal Processing 2005 2005:531501

    Published on: 14 September 2005

  6. Research Article

    Analysis of the Spatial Distribution of Galaxies by Multiscale Methods

    Galaxies are arranged in interconnected walls and filaments forming a cosmic web encompassing huge, nearly empty, regions between the structures. Many statistical methods have been proposed in the past in orde...

    J-L. Starck, V. J. Martínez, D. L. Donoho, O. Levi, P. Querre and E. Saar

    EURASIP Journal on Advances in Signal Processing 2005 2005:483071

    Published on: 14 September 2005

  7. Research Article

    Detection of Point Sources on Two-Dimensional Images Based on Peaks

    This paper considers the detection of point sources in two-dimensional astronomical images. The detection scheme we propose is based on peak statistics. We discuss the example of the detection of far galaxies ...

    M. López-Caniego, D. Herranz, J. L. Sanz and R. B. Barreiro

    EURASIP Journal on Advances in Signal Processing 2005 2005:985049

    Published on: 14 September 2005

  8. Research Article

    Technique for Automated Recognition of Sunspots on Full-Disk Solar Images

    A new robust technique is presented for automated identification of sunspots on full-disk white-light (WL) solar images obtained from SOHO/MDI instrument and Ca II K1 line images from the Meudon Observatory. E...

    S. Zharkov, V. Zharkova, S. Ipson and A. Benkhalil

    EURASIP Journal on Advances in Signal Processing 2005 2005:318462

    Published on: 14 September 2005

  9. Research Article

    Multiband Segmentation of a Spectroscopic Line Data Cube: Application to the HI Data Cube of the Spiral Galaxy NGC 4254

    A new method for the multiband segmentation of a spectroscopic line data cube is presented. This method is intended to help astronomers to handle complex spectroscopic line data cubes where the inspection of t...

    Farid Flitti, Christophe Collet, Bernd Vollmer and François Bonnarel

    EURASIP Journal on Advances in Signal Processing 2005 2005:921039

    Published on: 14 September 2005

  10. Research Article

    On-board Data Processing to Lower Bandwidth Requirements on an Infrared Astronomy Satellite: Case of Herschel-PACS Camera

    This paper presents a new data compression concept, "on-board processing," for infrared astronomy, where space observatories have limited processing resources. The proposed approach has been developed and test...

    Ahmed Nabil Belbachir, Horst Bischof, Roland Ottensamer, Franz Kerschbaum and Christian Reimers

    EURASIP Journal on Advances in Signal Processing 2005 2005:695165

    Published on: 14 September 2005

  11. Research Article

    Virtually Lossless Compression of Astrophysical Images

    We describe an image compression strategy potentially capable of preserving the scientific quality of astrophysical data, simultaneously allowing a consistent bandwidth reduction to be achieved. Unlike strictly l...

    Cinzia Lastri, Bruno Aiazzi, Luciano Alparone and Stefano Baronti

    EURASIP Journal on Advances in Signal Processing 2005 2005:192492

    Published on: 14 September 2005

  12. Research Article

    Adapted Method for Separating Kinetic SZ Signal from Primary CMB Fluctuations

    In this first attempt to extract a map of the kinetic Sunyaev-Zel'dovich (KSZ) temperature fluctuations from the cosmic microwave background (CMB) anisotropies, we use a method which is based on simple and min...

    Olivier Forni and Nabila Aghanim

    EURASIP Journal on Advances in Signal Processing 2005 2005:587370

    Published on: 14 September 2005