Individual bursts are characterized by an integrated flux of 10 39-40 ergs.
2.
IC 4633 is a very faint spiral galaxy surrounded by a vast amount of Milky Way line-of-sight integrated flux nebulae large faint clouds thought to be lit by large numbers of stars.
3.
Then W _ \ lambda represents the width of a hypothetical line which drops to an intensity of zero and has the " same integrated flux deficit from the continuum as the true one . " This equation can be applied to either emission or absorption, but when applied to emission, the value of W _ \ lambda is negative, and so the absolute value is used.