Wednesday, March 7, 2012

SOHO and Solar Flares


The Solar and Heliospheric Observatory is a fantastic international project between Europe and the US for the study of the Sun. (NASA, ESA).  Knowing that we are experiencing solar storms, I wanted to show what is used to help measure them.

What are the 12 on board instruments?

Able to measure core temperatures of the sun, interior rotation and gas flows in the solar interior, and acceleration of solar wind. Also has the ability to measure coronal waves and solar tornadoes.

SOHO has an orbit between the Sun and Earth, actually is 1.5 million kilometers away from the Earth, and  With this orbit, it has a constant view to study the Sun.
SOHO also discovered over 2,000 comets, making this a valuable tool in astronomical history.

SOHO has twelve instruments on board which aids us in the study of the Sun and helps us to measure and predict Space Weather events.

CELIAS - Charge, Element & Isotope Analysis System.
This measures the solar wind and detects solar storms.

COSTEP - Comprehensive Suprathermal & Energetic Particle Analyzer. this detects and classifies solar energy particles that come from the Sun, interplanetary and galactic origins.

EIT - Extreme Ultraviolet Imaging Telescope.  EIT shows the full disc images of the sun in different colors in extreme ultraviolet spectrum. 

ERNE - Measures high-energy particles emitted from the sun and from the Milky Way.

GOLF - Global Oscillations at Low Frequencies, measuring the solar internal structure.

LASCO - Large Angle & Spectrometric Coronograph. LASCO measures the outer solar atmosphere or corona.

MIDI - Michelson Doppler Imager/ Solar Oscillations Investigation. Measures solar acoustic waves  and the longitudinal component of the Sun's magnetic field.

SUMER- Solar Ultraviolet Measurements of Emitted Radiation. Measures plasma flows by temperature, density which helps to calculate the solar atmosphere.

SWAN - Solar Wind Anisotropies An instrument that measures the rest of the sky by detecting hydrogen that is blowing into the Solar System from interstellar space.

UVCS - UltraViolet Coronograph Spectrometer. Measures Ultra violet light of the solar corona by creating an artificial solar ecplipse.

VIRGO - Variability of Solar Irradiance and Gravity Oscillations.  Calculates the "Solar Constant" by measuring solar intensity oscillations.

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