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Advanced Physics Homework Help
Log N(s) vs Log S Graph for Radio Galaxies
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[QUOTE="andyfreesty1e, post: 2587865, member: 206008"] [h2]Homework Statement [/h2] if the intrinsic brightness of a class of radio galaxies fades as the universe ages, such that those that we see further away are brighter, having a linear increase in luminosity with distance r, what would be the slope of a graph of log N(s) versus log S for these objects. [h2]Homework Equations[/h2] [h2]The Attempt at a Solution[/h2] I know that usually, the slope would be -1.5, but as it says those that we see further away are brighter, i would expect that you would see more objects above the threshold S. So I am thinking that the slope would not be -1.5. Instead of using S=L/(4pi r^2), would i say that L=r, as it says having a linear increase in luminosity with r? [/QUOTE]
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Log N(s) vs Log S Graph for Radio Galaxies
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