Novel techniques for the identification of noise contributions to full-disc helioseismic power spectra

Authors Organisations
  • W. J. Chaplin(Author)
    University of Birmingham
  • Y. Elsworth(Author)
    University of Birmingham
  • G. R. Isaak(Author)
    University of Birmingham
  • B. A. Miller(Author)
    University of Birmingham
  • R. New(Author)
    Sheffield Hallam University
  • Balazs Pinter(Author)
    Department of Applied Mathematics
    The University of Sheffield
Type Conference Proceeding (Non-Journal item)
Original languageEnglish
Title of host publicationSOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology:
Subtitle of host publicationTowards a Golden Future
Pages360-363
Number of pages4
Edition559
Publication statusPublished - 2004
EventSOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future - New Haven, CT, United States of America
Duration: 12 Jul 200416 Jul 2004

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
ISSN (Print)0379-6566

Conference

ConferenceSOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future
CountryUnited States of America
CityNew Haven, CT
Period12 Jul 200416 Jul 2004
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Abstract

The continuum spectrum of noise found in the power spectra of Doppler shift measurements of the Sun provides information concerning non-oscillatory effects in the photosphere and forms a background against which oscillation modes must be detected. A proper determination of the continuum spectrum requires the genuine solar signal to be identified from amongst a number of instrumental effects. A number of authors have used cross-spectra form from simultaneous data sets to help to achieve such identification. In this paper we build on recent advances in the understanding of the noise characteristics of resonant scattering spectrometers to develop alternative techniques for isolating and evaluating solar and different instrumental noise contributions. Brief analyses of simulated data and BiSON measurements are presented to illustrate the potential of the techniques. helioseismology; noise level.