Proposal ID meyer_179

Date of Proposal Jul 28 1998

firstname

jim

lastname

meyer

institute

none

address

915 Taraval St. San francisco, Ca. 94116

email

none

phone

415 665 1223

fax

none

proposal

The total flux of the sun is about 7x10E7 watts/meterxmeter(w/m2). The flux at visible light is about 5x10E7 w/m2. Most of what is left is infrarad. It would be useful to know more about how much energy is being radiated at every frequency. It is not good to use blackbody laws to determine the flux each frequency handles. The Flux should be measured.

inside_collab

none

consortium

no

topic

energy flux at each frequency band

title

measuring solar flux at EIT windows

update added on 1999/03/06 at 17:56:53

Jim Meyer checking in on the proposal. This isintended to show the
sun(stars in general) do not radiate as blackbodies and most of the
energy is not thermal. Also, it is designed to show stars radiate
at the same temperature regardless of color. The sun is a very handy
source of information if one knows what to look for and how to see.
Since the sun is radiating 70% of its flux as non-thermal light it
follows the temperature will not be as per blackbody law 5700kelvin.
The true temperature will show up in the infared part of the spectrum.
A clear spectrum should show high peaks in the balmer lines and no
yellow color because the balmer lines are the only bands in that
part of the spectrum that radiate according to color law. Red,green,blue
that makes all the color radiated by stars. The balmer lines are
dominent in all stars brighter than mag+10 for the reason hydrogen
is the main mass of these stars.

update added on 1999/03/08 at 22:59:05

As a guess or first estimate, most of the energy from stars is red
light. It seems logical this red band carries about 2/3 of the total
energy of the stars. This is true for the sun. The green peak is a
model flaw caused by converting the solar flux measurement(w/m2)into
a color temperature using blackbody laws. This is just a guess-the
actual amount of energy being carried by the red band should be
measured. About 1/2 of the energy of Rigel type blue stars is in the
red band. So the red band fills then the green and blue bands fill.
The amount of energy needed for the red band is greater than the
energy needed for green and blue bands combined.
The total energy flux of the sun should be measured band by band to
see for sure stars are not blackbodies star light is not simple
stars don't get old and so on.

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