PPT Slide

Use Rayleigh-Jeans approximation to find T:

Flux density at Earth, F~10 watts m Hz

Source radius, R~10km at distance D~1kpc

then:

Watts m Hz ster

-2

-1

-1

-25

-2

-1

(1)

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For the long-wavelength side of the radio peak, we use the Rayleigh-Jeans apporximation for a blackbody (top equation). Then assuming a radius for the neutron star of 10km and a linear distance to the source of about 1kpc, the intensity at the surface of the neutron star (ie if it were a blackbody source) would be that given by equation (1).