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Laboratory for Atmospheric and Space Physics

Extreme Ultraviolet (EUV) Monitor

The MAVEN Extreme Ultraviolet (EUV) monitor contains three individual science channels to measure the full range of solar EUV irradiance variability. (Courtesy LASP)

The MAVEN Extreme Ultraviolet (EUV) monitor contains three individual science channels to measure the full range of solar EUV irradiance variability. (Courtesy LASP)

The Extreme Ultraviolet (EUV) monitor is part of the Langmuir Probe and Waves (LPW) instrument and measures solar EUV input and variability, and wave heating of the Martian upper atmosphere.

Goals:

  • Measure solar emissions from different regions of the Sun in three distinct EUV bands
  • Three channels will provide a complete EUV spectrum (0.1-190 nm) to serve as a proxy for input to the Flare Irradiance Spectral Model (FISM) model

Observations:

  • Solar EUV irradiance variability at wavelengths important for ionization, dissociation, and heating of the upper atmosphere (wavelengths shortward of HI Ly-α 121.6 nm)

Technical details and heritage:

MAVEN will study the Martian atmosphere just after "solar maximum," a time when the Sun is most active. During this time, the Sun's activity reveals processes like those occurring billions of years ago, when our star was young. (Courtesy Hathaway/NASA/MSFC)

MAVEN will study the Martian atmosphere just after “solar maximum,” a time when the Sun is most active. During this time, the Sun’s activity reveals processes like those occurring billions of years ago, when our star was young. (Courtesy Hathaway/NASA/MSFC)

  • Three photometers at key wavelengths representing different temperature solar emissions (0.1-7, 17-22, and 121.6 nm)
  • Full spectrum (0-200 nm) derived from measurements using Flare Irradiance Spectral Model (FISM)
  • Heritage from TIMED, SORCE, SDO, and rocket instruments

Frank Eparvier—EUV Instrument Lead

Frank Eparvier—EUV Instrument Lead


Frank Eparvier (LASP) is the instrument lead for the EUV sensor. For more about Eparvier, visit: http://cafescicolorado.org/Eparvier.htm

 

 

 

 


MAVEN Science Community Workshop Presentations
(Dec. 2, 2012)

EUV presentation (6.5 MB PDF)

EUV presentation
(6.5 MB PDF)