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19 results on '"Korendyke, C. M"'

1. Near-Sun observations of an F-corona decrease and K-corona fine structure

Author

Howard, R. A., Vourlidas, A., Bothmer, V., Colaninno, R. C., DeForest, C. E., Gallagher, B., Hall, J. R., Hess, P., Higginson, A. K., Korendyke, C. M., Kouloumvakos, A., Lamy, P. L., Liewer, P. C., Linker, J., Linton, M., Penteado, P., Plunkett, S. P., Poirier, N., Raouafi, N. E., Rich, N., Rochus, P., Rouillard, A. P., Socker, D. G., Stenborg, G., Thernisien, A. F., and Viall, N. M.

Published
2019
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2. The Structure and Dynamics of the Upper Chromosphere and Lower Transition Region as Revealed by the Subarcsecond VAULT Observations

Author

Vourlidas, A., Nuño, B. Sánchez-Andrade, Landi, E., Patsourakos, S., Teriaca, L., Schühle, U., Korendyke, C. M., and Nestoras, I.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Very high Angular resolution ULtraviolet Telescope (VAULT) is a sounding rocket payload built to study the crucial interface between the solar chromosphere and the corona by observing the strongest line in the solar spectrum, the Ly-a line at 1216 {\AA}. In two flights, VAULT succeeded in obtaining the first ever sub-arcsecond (0.5") images of this region with high sensitivity and cadence. Detailed analyses of those observations have contributed significantly to new ideas about the nature of the transition region. Here, we present a broad overview of the Ly-a atmosphere as revealed by the VAULT observations, and bring together past results and new analyses from the second VAULT flight to create a synthesis of our current knowledge of the high-resolution Ly-a Sun. We hope that this work will serve as a good reference for the design of upcoming Ly-a telescopes and observing plans., Comment: 28 pages, 11 figures

Published
2009
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3. The Solar Orbiter Heliospheric Imager (SoloHI)

Author

Howard, R. A., primary, Vourlidas, A., additional, Colaninno, R. C., additional, Korendyke, C. M., additional, Plunkett, S. P., additional, Carter, M. T., additional, Wang, D., additional, Rich, N., additional, Lynch, S., additional, Thurn, A., additional, Socker, D. G., additional, Thernisien, A. F., additional, Chua, D., additional, Linton, M. G., additional, Koss, S., additional, Tun-Beltran, S., additional, Dennison, H., additional, Stenborg, G., additional, McMullin, D. R., additional, Hunt, T., additional, Baugh, R., additional, Clifford, G., additional, Keller, D., additional, Janesick, J. R., additional, Tower, J., additional, Grygon, M., additional, Farkas, R., additional, Hagood, R., additional, Eisenhauer, K., additional, Uhl, A., additional, Yerushalmi, S., additional, Smith, L., additional, Liewer, P. C., additional, Velli, M. C., additional, Linker, J., additional, Bothmer, V., additional, Rochus, P., additional, Halain, J.-P., additional, Lamy, P. L., additional, Auchère, F., additional, Harrison, R. A., additional, Rouillard, A., additional, Patsourakos, S., additional, Cyr, O. C. St., additional, Gilbert, H., additional, Maldonado, H., additional, Mariano, C., additional, and Cerullo, J., additional

Published
2020
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4. The Structure and Dynamics of the Upper Chromosphere and Lower Transition Region as Revealed by the Subarcsecond VAULT Observations

Author

NAVAL RESEARCH LAB WASHINGTON DC SPACE SCIENCE DIV, Vourlidas, A., Sanchez, B., Andrade-Nuno, Landi, E., Patsourakos, S., Teriaca, L., Schuhle, U., Korendyke, C. M., Nestoras, I., NAVAL RESEARCH LAB WASHINGTON DC SPACE SCIENCE DIV, Vourlidas, A., Sanchez, B., Andrade-Nuno, Landi, E., Patsourakos, S., Teriaca, L., Schuhle, U., Korendyke, C. M., and Nestoras, I.

Abstract

The Very high Angular resolution ULtraviolet Telescope (VAULT) is a sounding rocket payload built to study the crucial interface between the solar chromosphere and the corona by observing the strongest line in the solar spectrum, the Ly alpha line at 1216 angstrom. In Two Flights, VAULT succeeded in obtaining the first ever sub-arcsecond (0.5") images of this region with high sensitivity and cadence. Detailed analyses of those observations have contributed significantly to new ideas about the nature of the transition region. Here, we present a broad overview of the Ly alpha atmosphere as revealed by the VAULT observations, and bring together past results and new analyses from the second VAULT flight to create a synthesis of our current knowledge of the high-resolution Ly alpha Sun. We hope that this work will serve as a good reference for the design of upcoming Ly alpha telescopes and observing plans., Supported in part by NASA. Published in SOLA:vault_final.tex, v16 n27 p1-28, 28 June 2010.

Published
2010

7. Heliospheric Images of the Solar Wind at Earth

Author

Sheeley, Jr., N. R., primary, Herbst, A. D., additional, Palatchi, C. A., additional, Wang, Y.‐M., additional, Howard, R. A., additional, Moses, J. D., additional, Vourlidas, A., additional, Newmark, J. S., additional, Socker, D. G., additional, Plunkett, S. P., additional, Korendyke, C. M., additional, Burlaga, L. F., additional, Davila, J. M., additional, Thompson, W. T., additional, St Cyr, O. C., additional, Harrison, R. A., additional, Davis, C. J., additional, Eyles, C. J., additional, Halain, J. P., additional, Wang, D., additional, Rich, N. B., additional, Battams, K., additional, Esfandiari, E., additional, and Stenborg, G., additional

Published
2008
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8. SECCHI Observations of the Sun's Garden-Hose Density Spiral

Author

Sheeley, Jr., N. R., primary, Herbst, A. D., additional, Palatchi, C. A., additional, Wang, Y.-M., additional, Howard, R. A., additional, Moses, J. D., additional, Vourlidas, A., additional, Newmark, J. S., additional, Socker, D. G., additional, Plunkett, S. P., additional, Korendyke, C. M., additional, Burlaga, L. F., additional, Davila, J. M., additional, Thompson, W. T., additional, St Cyr, O. C., additional, Harrison, R. A., additional, Davis, C. J., additional, Eyles, C. J., additional, Halain, J. P., additional, Wang, D., additional, Rich, N. B., additional, Battams, K., additional, Esfandiari, E., additional, and Stenborg, G., additional

Published
2008
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11. Origin and Evolution of Coronal Streamer Structure During the 1996 Minimum Activity Phase

Author

Wang, Y.‐M., primary, Sheeley, Jr., N. R., additional, Howard, R. A., additional, Kraemer, J. R., additional, Rich, N. B., additional, Andrews, M. D., additional, Brueckner, G. E., additional, Dere, K. P., additional, Koomen, M. J., additional, Korendyke, C. M., additional, Michels, D. J., additional, Moses, J. D., additional, Paswaters, S. E., additional, Socker, D. G., additional, Wang, D., additional, Lamy, P. L., additional, Llebaria, A., additional, Vibert, D., additional, Schwenn, R., additional, and Simnett, G. M., additional

Published
1997
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13. Measurements of Flow Speeds in the Corona Between 2 and 30R☉

Author

Sheeley, Jr., N. R., primary, Wang, Y.‐M., additional, Hawley, S. H., additional, Brueckner, G. E., additional, Dere, K. P., additional, Howard, R. A., additional, Koomen, M. J., additional, Korendyke, C. M., additional, Michels, D. J., additional, Paswaters, S. E., additional, Socker, D. G., additional, St. Cyr, O. C., additional, Wang, D., additional, Lamy, P. L., additional, Llebaria, A., additional, Schwenn, R., additional, Simnett, G. M., additional, Plunkett, S., additional, and Biesecker, D. A., additional

Published
1997
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15. Search for Brightness Variations in Fe XIV Coronagraph Observations of the Quiescent Solar Corona

Author

Wood, B. E., Karovska, M., Cook, J. W., Brueckner, G. E., Howard, R. A., Korendyke, C. M., and Socker, D. G.

Abstract

We use Fe XIV5303 Å green line images obtained by the Large Angle Spectrometric Coronagraph (LASCO) on board SOHOto search for variability in the quiescent solar corona in the shortest observable timescales. The observing program obtained Fe XIVimages of a small area of the inner corona every 2 minutes over a period of 1 hr. We present results from two executions of this program taken several months apart. The most obvious variability observed in the two sequences is in the form of quasi-steady brightening on timescales of at least an hour. Of particular interest are two compact loops that are observed to vary significantly during the course of the observations. Superposed on the long-term brightening in these loops are statistically significant variations on timescales of about 30 minutes. In both loops, the overall brightening is greatest at the apparent loop tops, where the intensity increases by at least 25%. In one loop there appears to be a flow up one of the legs of the loop. We place these observations in context with earlier observations of coronal variability, and we discuss the energy requirements for the observed brightening. Emission measures computed from Fe XIVintensities measured within the two brightening loops are over an order of magnitude lower than those typically found for active regions on the solar disk, which suggests significantly lower average densities. For one of the loops, we measure densities in the range ne= (5.0-7.4) × 108cm-3. Lower than average densities are expected for the two loops, given that they reach more than 1 pressure scale height above the solar limb.

Published
1998
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18. Wide-angle stray-light reduction for a spaceborne optical hemispherical imager.

Author

Buffington A, Jackson BV, and Korendyke CM

Abstract

We describe a simple visible-light stray-background-reducing baffle, suitable for use on a stabilized interplanetary platform. The design is a corrallike enclosure with five concentric walls. The baffle reduces direct sunlight and reflections from illuminated portions of the spacecraft by a factor of 10(-12), provided that all these lie beyond at least a hemisphere centered on the viewing aperture. With this condition these bright sources do not directly illuminate within the outermost wall of the corral, and diffraction over the wall tops is the dominant mechanism by which light reaches the corral interior. We present design calculations for such a corral, as well as a laboratory measurement confirming the basic design assumption.

Published
1996
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19. Imaging channeled spectrograph: a high resolution spectrometer providing multiple simultaneous 2-D monochromatic images over a large spectral range.

Author

Korendyke CM

Abstract

An imaging channeled spectrograph (ICS) consists of a Fabry-Perot bandpass filter followed by a wide slit imaging grating spectrograph. This unique configuration combines the 2-D monochromatic imaging of a Fabry-Perot system with the high resolution and comprehensive wavelength coverage of a grating spectrograph. The ICS produces a series of simultaneous, high resolution, nonoverlapping, 2-D monochromatic images uniformly distributed over a large spectral range. This paper describes the ICS optical properties in general and calculates the optical performance of an ICS designed for the proposed NRL spectrocoronagraph.

Published
1988
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