The Global Oscillation Network Group (GONG) Project

Bibcode
1996Sci...272.1284H
DOI
10.1126/science.272.5266.1284
Yasukawa, E.; Saa, O.; Patron, J.; Marquette, W.; Kennewell, J. A.; Bhatnagar, A.; Ulrich, R. K.; Toomre, J.; Title, A. M.; Noyes, R. W.; Gilman, P. A.; Pintar, J. A.; Leibacher, J. W.; Kennedy, J. R.; Hubbard, R. P.; Hill, F.; Harvey, J. W.
Bibliographical reference

Science, Volume 272, Issue 5266, pp. 1284-1286

Advertised on:
5
1996
Journal
Science
Number of authors
17
IAC number of authors
0
Citations
441
Refereed citations
371
Description
Helioseismology requires nearly continuous observations of the oscillations of the solar surface for long periods of time in order to obtain precise measurements of the sun's normal modes of oscillation. The GONG project acquires velocity images from a network of six identical instruments distributed around the world. The GONG network began full operation in October 1995. It has achieved a duty cycle of 89 percent and reduced the magnitude of spectral artifacts by a factor of 280 in power, compared with single-site observations. The instrumental noise is less than the observed solar background.
Type
Refereed

It may interest you

  • Refereed
    Stellar halo density with LAMOST K and M giants

    Aims: We derive the morphology of the stellar component in the outer halo volume, and search for possible overdensities due to substructures therein. Methods: We made use of some of the data releases of the spectroscopic survey LAMOST DR8-DR9 in tandem with distance determinations for two subsamples, that is, of K-giants and M-giants, respectively

    López-Corredoira, M. et al.

    Advertised on:

    4
    2024
    Bibcode
    2024A&A...684A.135L
    Citations
    1
  • Refereed
    Euclid preparation. XXXVII. Galaxy colour selections with Euclid and ground photometry for cluster weak-lensing analyses

    Aims: We derived galaxy colour selections from Euclid and ground-based photometry, aiming to accurately define background galaxy samples in cluster weak-lensing analyses. These selections have been implemented in the Euclid data analysis pipelines for galaxy clusters. Methods: Given any set of photometric bands, we developed a method for the

    Euclid Collaboration et al.

    Advertised on:

    4
    2024
    Bibcode
    2024A&A...684A.139E
    Citations
    2
  • Refereed
    The discovery space of ELT-ANDES. Stars and stellar populations

    The ArmazoNes high Dispersion Echelle Spectrograph (ANDES) is the optical and near-infrared high-resolution echelle spectrograph envisioned for the Extremely Large Telescope (ELT). We present a selection of science cases, supported by new calculations and simulations, where ANDES could enable major advances in the fields of stars and stellar

    Roederer, Ian U. et al.

    Advertised on:

    4
    2024
    Bibcode
    2024ExA....57...17R
    Citations
    0