May 14th, 2008| 01:00 pm | Posted by vlk
Spectral lines are a ubiquitous feature of astronomical data. This week, we explore the special case of optically thin emission from low-density and high-temperature plasma, and consider the component factors that determine the line intensity. Continue reading ‘Line Emission [EotW]’ »
Tags:
abundance,
emission,
emission measure,
emissivity,
EotW,
Equation,
Equation of the Week,
flux,
ion balance,
line Category:
Astro,
Jargon,
Misc,
Physics,
Stars |
2 Comments
May 2nd, 2008| 06:06 pm | Posted by vlk
Starting a new feature — highlighting some equation that is widely used in astrophysics or astrostatistics. Today’s featured equation: what instruments do to incident photons. Continue reading ‘Equation of the Week: Confronting data with model’ »
Tags:
ARF,
effective area,
EotW,
Equation,
Equation of the Week,
LRF,
point spread function,
PSF,
response matrix,
RMF,
source Category:
Astro,
Jargon |
Comment