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Browsing by Author "Dame, L"

Browsing by Author "Dame, L"

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  • Observational Searches for Chromospheric g-Mode Oscillationsfrom CaII H-Line Observations 
    Kariyappa, R; Dame, L; Hiremath, K. M (Indian Academy of Sciences, 2006-09)
    We have used a high spatial and temporal resolution of long time sequence of spectra in CaII H-line obtained at the Vacuum Tower Telescope (VTT) of the Sacramento Peak Observatory on a quiet region at the center of the ...
  • Origin of the Solar Rotation Harmonics Seen in the EUV and UV Irradiance 
    Giono, G; Zender, J. J; Kariyappa, R; Dame, L (Springer, 2021-11)
    Long-term periodicities in the solar irradiance are often observed with periods proportional to the solar rotational period of 27 days. These periods are linked either to some internal mechanism in the Sun or said to be ...
  • Period-brightness relationship in chromospheric bright points 
    Kariyappa, R; Satya Narayanan, A; Dame, L (Astronomical Society of India, 2005-03)
    Chromospheric bright points are sites where intense heating takes place by 3-min period waves. A 35-min-long time series of photographic spectra obtained in CaII H-line on a quiet region at the center of the solar disk ...
  • Preliminary results on irradiance measurements from LYRA and SWAP 
    Kumara, S. T; Kariyappa, R; Dominique, M; David, B; Dame, L; Hochedez, J. F; Doiddamani, V. H; Pradeep Chitta, L (Hindawi Publishing Corporation, 2012-01)
    The rst and preiminary results of the photometry of Large Yield Radiometer (LYRA) and Sun Watcher using Active Pixel system detector and Image Processing (SWAP) onboard PROBA2 are presented in this paper. To study the ...
  • Segmentation of Coronal Features to Understand the Solar EUV and UV Irradiance Variability 
    Kumara, S. T; Kariyappa, R; Zender, J. J; Giono, G; Delouille, V; Pradeep Chitta, L; Dame, L; Hochedez, J. F; Verbeeck, C; Mampaey, B; Doddamani, V. H (EDP Sciences, 2014-01)
    Context. The study of solar irradiance variability is of great importance in heliophysics, the Earth’s climate, and space weather applications. These studies require careful identifying, tracking and monitoring of active ...

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