Search Results - "Kariyappa, R."

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    Origin of the Solar Rotation Harmonics Seen in the EUV and UV Irradiance by Giono, G., Zender, J. J., Kariyappa, R., Damé, L.

    Published in Solar physics (01-11-2021)
    “…Long-term periodicities in the solar irradiance are often observed with periods proportional to the solar rotational period of 27 days. These periods are…”
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    DYNAMICS OF THE SOLAR MAGNETIC BRIGHT POINTS DERIVED FROM THEIR HORIZONTAL MOTIONS by CHITTA, L. P, VAN BALLEGOOIJEN, A. A, ROUPPE VAN DER VOORT, L, DELUCA, E. E, KARIYAPPA, R

    Published in The Astrophysical journal (10-06-2012)
    “…The subarcsecond bright points (BPs) associated with the small-scale magnetic fields in the lower solar atmosphere are advected by the evolution of the…”
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    OBSERVATIONS OF THE INTERACTION OF ACOUSTIC WAVES AND SMALL-SCALE MAGNETIC FIELDS IN A QUIET SUN by Chitta, Lakshmi Pradeep, Jain, Rekha, Kariyappa, R., Jefferies, Stuart M.

    Published in The Astrophysical journal (10-01-2012)
    “…The effect of the magnetic field on photospheric intensity and velocity oscillations at the sites of small-scale magnetic fields (SMFs) in a quiet Sun near the…”
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    NONLINEAR FORCE-FREE FIELD MODELING OF THE SOLAR MAGNETIC CARPET AND COMPARISON WITH SDO /HMI AND SUNRISE /IMAX OBSERVATIONS by Chitta, L P, Kariyappa, R, van Ballegooijen, A A, DeLuca, E E, Solanki, S K

    Published in The Astrophysical journal (01-10-2014)
    “…In the quiet solar photosphere, the mixed polarity fields form a magnetic carpet that continuously evolves due to dynamical interaction between the convective…”
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    OBSERVATIONS AND MODELING OF THE EMERGING EXTREME-ULTRAVIOLET LOOPS IN THE QUIET SUN AS SEEN WITH THE SOLAR DYNAMICS OBSERVATORY by Chitta, L P, Kariyappa, R, van Ballegooijen, A A, DeLuca, E E, Hasan, S S, Hanslmeier, A

    Published in The Astrophysical journal (01-05-2013)
    “…We used data from the Helioseismic and Magnetic Imager (HMI) and the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) to study…”
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    Spatially resolved images and solar irradiance variability by Kariyappa, R.

    Published in Journal of astrophysics and astronomy (01-06-2008)
    “…The Sun is the primary source of energy that governs both the terrestrial climate and near-earth space environment. Variations in UV irradiances seen at earth…”
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    Preliminary Results on Irradiance Measurements from Lyra and Swap by Kumara, S. T., Kariyappa, R., Dominique, M., Berghmans, D., Damé, L., Hochedez, J. F., Doddamani, V. H., Chitta, Lakshmi Pradeep

    Published in Advances in astronomy (01-01-2012)
    “…The first and preliminary results of the photometry of Large Yield Radiometer (LYRA) and Sun Watcher using Active Pixel system detector and Image Processing…”
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    Solar oscillations in strong and weak fraunhofer lines over a quiet region by Kariyappa, R.

    Published in Solar physics (01-05-1996)
    “…We have analysed a 35-min-long time sequence of spectra in the Ca II H line, Na I D1 and D2 lines, and in a large number of strong and weak Fe I lines taken…”
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    Intensity oscillations in chromospheric bright points and network elements by Kariyappa, R.

    Published in Solar physics (01-09-1994)
    “…From a 35-min time series of photographic spectra in the Ca II H-line obtained at the Vacuum Tower Telescope (VTT) of the Sacramento Peak Observatory under…”
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    CaII K imaging to understand UV irradiance variability by Kariyappa, R

    Published in Journal of astrophysics and astronomy (01-09-2000)
    “…To identify and understand the underlying physical mechanisms of total solar and UV irradiance variability and to estimate the contribution of various…”
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    The extreme solar activity during october–november 2003 by Hiremath, K M, Lovely, M R, Kariyappa, R

    Published in Journal of astrophysics and astronomy (01-06-2006)
    “…The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the…”
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    Observational searches for chromospheric G-mode oscillations from CaII H-line observations by Kariyappa, R., Damé, L., Hiremath, K. M.

    Published in Journal of astrophysics and astronomy (01-06-2006)
    “…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…”
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    Contribution of chromospheric features to UV irradiance variability from spatially-resolved Ca II K spectroheliograms: I. A new method of analysis and preliminary results by Kariyappa, R., Pap, J. M.

    Published in Solar physics (1996)
    “…We have digitized the Ca II K spectroheliograms, observed at the National Solar Observatory at Sacramento Peak, for the period 1980 (maximum of solar cycle…”
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    Ca II K line profile of the truly quiet Sun by Sivaraman, K. R., Gupta, S. S., Kariyappa, R.

    Published in Solar physics (01-01-1996)
    “…While evaluating the chromospheric variability (solar cycle related or any other) using the Ca II K line ( lambda 3933.684 A) as an indicator, an essential…”
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    Observational Searches for Chromospheric g-Mode Oscillationsfrom Call H-Line Observations by Kariyappa, R, Dame, L, Hiremath, K M

    Published in Journal of astrophysics and astronomy (01-09-2006)
    “…We have used a high spatial and temporal resolution of long time sequence of spectra in Call H-line obtained at the Vacuum Tower Telescope (VTT) of the…”
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    Journal Article