Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-27T18:39:23.223Z Has data issue: false hasContentIssue false

A comparison of measured and simulated solar network contrast

Published online by Cambridge University Press:  26 February 2010

N. Afram
Affiliation:
Imperial College, London, UK
Y. C. Unruh
Affiliation:
Imperial College, London, UK
S. K. Solanki
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany
M. Schüssler
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany
S. K. Mathew
Affiliation:
Udaipur Solar Observatory (USO), Rajasthan, India
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Long-term trends in the solar spectral irradiance are important to determine the impact on Earth's climate. These long-term changes are thought to be caused mainly by changes in the surface area covered by small-scale magnetic elements. The direct measurement of the contrast to determine the impact of these small-scale magnetic elements is, however, limited to a few wavelengths, and is, even for space instruments, affected by scattered light and instrument defocus. In this work we calculate emergent intensities from 3-D simulations of solar magneto-convection and validate the outcome by comparing with observations from Hinode/SOT. In this manner we aim to construct the contrast at wavelengths ranging from the NUV to the FIR.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

Ichimoto, K., Katsukawa, Y., Tarbell, T., Shine, R. A., Hoffmann, C., Berger, T., Cruz, T., Suematsu, Y., Tsuneta, S., Shimizu, T., & Lites, B. W. 2008, in First Results From Hinode, ed. Matthews, S. A., Davis, J. M., & Harra, L. K., ASP-CS, 397, 51Google Scholar
Krivova, N. A., Solanki, S. K., Fligge, M., & Unruh, Y. C. 2003, A&A, 399, L1Google Scholar
Kurucz, R. L. 1993, ATLAS9 Stellar Atmosphere Programs and 2km/s grid (Kurucz CD-ROM 13)Google Scholar
Mathew, S. K., Zakharov, V., & Solanki, S. K. 2009, A&A, 501, L19Google Scholar
Ortiz, A., Solanki, S. K., Domingo, V., Fligge, M., & Sanahuja, B. 2002, A&A, 388, 1036Google Scholar
Shimizu, T., Nagata, S., Tsuneta, S., Tarbell, T., Edwards, C., Shine, R., Hoffmann, C., Thomas, E., Sour, S., Rehse, R., Ito, O., Kashiwagi, Y., Tabata, M., Kodeki, K., Nagase, M., Matsuzaki, K., Kobayashi, K., Ichimoto, K., & Suematsu, Y. 2008, Solar Phys., 249, 221CrossRefGoogle Scholar
Suematsu, Y., Tsuneta, S., Ichimoto, K., Shimizu, T., Otsubo, M., Katsukawa, Y., Nakagiri, M., Noguchi, M., Tamura, T., Kato, Y., Hara, H., Kubo, M., Mikami, I., Saito, H., Matsushita, T., Kawaguchi, N., Nakaoji, T., Nagae, K., Shimada, S., Takeyama, N., & Yamamuro, T. 2008, Solar Phys., 249, 197CrossRefGoogle Scholar
Tsuneta, S., Ichimoto, K., Katsukawa, Y., Nagata, S., Otsubo, M., Shimizu, T., Suematsu, Y., Nakagiri, M., Noguchi, M., Tarbell, T., Title, A., Shine, R., Rosenberg, W., Hoffmann, C., Jurcevich, B., Kushner, G., Levay, M., Lites, B., Elmore, D., Matsushita, T., Kawaguchi, N., Saito, H., Mikami, I., Hill, L. D., & Owens, J. K. 2008, Solar Phys., 249, 167CrossRefGoogle Scholar
Unruh, Y. C., Solanki, S. K., & Fligge, M. 1999, A&A, 345, 635Google Scholar
Vögler, A., Shelyag, S., Schüssler, M., Cattaneo, F., Emonet, T., & Linde, T. 2005, A&A, 429, 335Google Scholar