Eccentricity without Measuring Eccentricity: Discriminating among Stellar Mass Black Hole Binary Formation Channels

We show how the observable number of binaries in LISA is affected by eccentricity through its influence on peak gravitational-wave frequency, enhanced binary density required to produce LIGO observed rate, and reduced signal-to-noise ratio (S/N) for an eccentric event. also demonstrate these effects should make it possible learn about distribution formation channels counting as a function even with no explicit detection eccentricity. provide simplified calculation S/N binaries.