First Results from SOHO

AvB. Fleck,Bernhard Fleck

Inbunden, Engelska, 1998

2 121 kr

Beställningsvara. Skickas inom 10-15 vardagar. Fri frakt över 249 kr.

Beskrivning

The aim of the VIRGO investigation (Variability of solar IRradiance and Gravity Oscillations) on SOHO (SOlar and Heliospheric Observatory) is to determine the characteristics of pressure and internal gravity oscillations by observing irradiance and radiance variations, to measure the solar total and spectral irradiance and to quantify their variability over periods of days to the duration of the mission. VIRGO contains two different active-cavity radiometers for monitoring the sol- ar 'constant' (DIARAD and PM06-V), two three-channel sunphotometers (SPM) for the measurement of the spectral irradiance at 402, 500, and 862 nm with a bandwidth of 5 nm, and a low-resolution imager (Luminosity Oscillation Imager, LOI) with 12 'scientific' and 4 guiding pixels, for measuring the radiance dis- tribution over the solar disk: at 500 nm. The instrumentation has been described in detail by Frohlich et al. (1995). In addition, the observed in-flight performance and operational aspects of the irradiance observations are described by Frohlich et al. (1997), and those of the LOI by Appourchaux et al. (1997).

Produktinformation

Utforska kategorier

Recensioner i media

Innehållsförteckning

Hoppa över listan

Mer från samma författare

Hoppa över listan

Du kanske också är intresserad av

Observing Photons in Space

Arvind Parmar, Jan-Willem den Herder, Bernhard Fleck, Matthew Griffin, David Lumb, Anuschka Pauluhn, Alan Smith

Inbunden

2 449 kr

SOHO Mission

Bernhard Fleck, Vicente Domingo, Arthur I. Poland

Häftad

1 064 kr