a) Calculate Eddington luminosity for a neutron star (M = 1.4M), a white dwarf (M = 0.7M), supermassive black hole (M = 4.1 × 106M) in the center of our Galaxy. M is the typical notation for the solar mass (look up the M value on the web). Express your answer in ergs/s.
b) Assuming distances of 2 kpc (typical distance to an accreting neutron star), 80 pc for a white dwarf , and 8 kpc for the supermassive black hole in Milky Way calculate the corresponding Eddington fluxes at the Earth.
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