Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T04:58:40.787Z Has data issue: false hasContentIssue false
  • English
  • Français

ALEXIS Lunar Observations

Published online by Cambridge University Press:  12 April 2016

B.C. Edwards ,
J.J. Bloch ,
D. Roussel-Dupré ,
T.E. Pfafman  and
Sean Ryan
B.C. Edwards
Affiliation:
Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM, USA
J.J. Bloch
Affiliation:
Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM, USA
D. Roussel-Dupré
Affiliation:
Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM, USA
T.E. Pfafman
Affiliation:
Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM, USA
Sean Ryan
Affiliation:
Mail Stop D436, Los Alamos National Laboratory, Los Alamos, NM, USA

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.

The ALEXIS small satellite was designed as a large area monitor operating at extreme ultraviolet wavelengths (130 − 190 Å). At these energies, the moon is the brightest object in the night sky and was the first source identified in the ALEXIS data. Due to the design of ALEXIS and the lunar orbit, the moon is observed for two weeks of every month. Since lunar emissions in the extreme ultraviolet are primarily reflected solar radiation these observations may be useful as a solar monitor in the extreme ultraviolet. The data show distinct temporal and spectral variations indicating similar changes in the solar spectrum. We will present a preliminary dataset of lunar observations and discussions covering the variations observed and how they relate to the solar spectrum.

Type
X. Solar System Observations
Information
International Astronomical Union Colloquium , Volume 152: Astrophysics in the Extreme Ultraviolet , 1996 , pp. 465 - 470
Copyright
Copyright © Kluwer 1996

References

Bearman, P.W. & Graham, J.M.R. 1980, Vortex shedding from bluff bodies in oscillating flow: A report on Euromech 119, J. Fluid Mech., 99, 225 Google Scholar
Bloch, J.J., et al. 1990, Design, Performance, and Calibration of the ALEXIS Ultrasoft X-ray Telescopes, SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for AstronomyGoogle Scholar
Edwards, B., Priedhorsky, W.C., & Smith, B.W. 1991, Expected Extreme Ultraviolet Spectrum of the Lunar Surface, Geophys. Res. Lett., 18, 2161 Google Scholar
Gladstone, G.R., McDonald, J.S., Boyd, W.T., & Bowyer, S. 1993, EUVE Photometric Observations of the Moon, Geoph. Res. Lett., 21(6), 461 CrossRefGoogle Scholar
Heroux, L., Cohen, M., & Higgins, J.E. 1974, Electron Densities Between 110 and 300 km Derived From Solar EUV Fluxes of August 23 1972, J. Geophys. Res., 29(34)Google Scholar