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Applications of Signal Processing in Astrophysics and Cosmology

  1. Content type: Research Article

    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...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:318462

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  2. Content type: Research Article

    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 ...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:190845

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  3. Content type: Research Article

    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...

    Authors: Cinzia Lastri, Bruno Aiazzi, Luciano Alparone and Stefano Baronti

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:192492

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  4. Content type: Research Article

    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...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:695165

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  5. Content type: Research Article

    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...

    Authors: Farid Flitti, Christophe Collet, Bernd Vollmer and François Bonnarel

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:921039

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  6. Content type: Research Article

    Stellar spectral classification is not only a tool for labeling individual stars but is also useful in studies of stellar population synthesis. Extracting the physical quantities from the digitized spectral pl...

    Authors: Emmanuel Bratsolis

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:296545

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  7. Content type: Research Article

    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 ...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:985049

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  8. Content type: Research Article

    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...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:483071

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  9. Content type: Research Article

    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 ...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:531501

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  10. Content type: Research Article

    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...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:484606

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  11. Content type: Research Article

    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...

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

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:297184

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  12. Content type: Research Article

    We consider the problem of restoring astronomical images acquired with charge coupled device cameras. The astronomical object is first blurred by the point spread function of the instrument-atmosphere set. The...

    Authors: H. Lantéri and C. Theys

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:643143

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  13. Content type: Research Article

    Authors: Ercan E. Kuruoglu and Carlo Baccigalupi

    Citation: EURASIP Journal on Advances in Signal Processing 2005 2005:274312

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