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Astronomer's Toolbox
Soft X-ray Background: Quiz
Diffuse Background Quiz
Above 1 keV, what is the dominant source of the soft X-ray background emission?
[A] Hot plasma between stars in our Galaxy
[B] Discrete, but unresolved, extragalactic sources
[C] Nobody knows
At higher energies the sources of the diffuse background are mainly located in our galaxy.
[A] True
[B] False
[C] We don't know
Much of the cosmic gamma-ray emission comes from
[A] Mars
[B] the strong flux due to the gas in our galaxy
[C] flying saucers