Astrophysics (Index)About

extreme ultraviolet

(EUV, XUV)
(electromagnetic radiation in the range of 10-124 nm)

Extreme ultraviolet (EUV or XUV) is the shortest-wavelength ultraviolet (UV) radiation, adjacent to X-ray and at the far end of the UV spectrum from visible light. A typical cited wavelength-range is 10-124 nm (ultraviolet's full range is 10-400 nm). EUV is completely absorbed by Earth atmosphere and its astronomical observation is carried out by space observatories. Observation is used to study the corona of the Sun (revealing the Sun's magnetic topology) and to study the interstellar medium (ISM). It is ionizing radiation, capable of significant photoionization, a significant factor in some astrophysical processes, and a quality that makes it a danger both to humans and to spacecraft.


(ultraviolet,EMR,spectrum,band)
Further reading:
https://en.wikipedia.org/wiki/Extreme_ultraviolet
http://solar-center.stanford.edu/about/uvlight.html
https://ui.adsabs.harvard.edu/abs/2014AdSpR..53.1003B/abstract
https://pubs.aip.org/physicstoday/article/57/4/88/412464/Extreme-Ultraviolet-Astronomy
https://ui.adsabs.harvard.edu/abs/2000ARA%26A..38..231B/abstract
https://beckassets.blob.core.windows.net/product/readingsample/210295/9780521580588_excerpt_001.pdf
WaveLFreqPhoton
Energy
  
10nm30PHz124eVbeginextreme ultraviolet
124nm2.5PHz10eVendextreme ultraviolet

Referenced by pages:
ALEXIS
ARGOS
atmospheric escape
BeppoSAX
CHIPS
coronal loop
COSIE
escape fraction
ESIS
Extreme Ultraviolet Explorer (EUVE)
Galileo
habitability
HEASARC
high-energy astrophysics (HEA)
Hisaki
IMAGE­
Lyman alpha (Ly-α)
Lyman beta (Ly-β)
Lyman series (L)
Lyman-Werner photon
OSO 7
OSO 8
photoionization
ROSAT
Solar and Heliospheric Observatory (SOHO)
Solar Dynamics Observatory (SDO)
Solar Orbiter (SolO)
STEREO
Sun
TIMED
ultraviolet (UV)
Wien's displacement law
XEUV

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