I sample a Salpeter IMF using the method of inverse transform sampling. Starting with the integral of the Salpeter IMF, N(< M) ∼ M^-1.35, I construct the normalized cumulative distribution function (CDF) by computing (M^-1.35 – M_1^-1.35) / (M_2^-1.35 – M_1^-1.35) for 10,000 masses M evenly spaced in log between the integration limits M_1 and M_2. 127 more words
Tags » Neutron Star
Astronomers closer to proving gravitational waves with precise measurements of rapidly rotating neutron star
When Albert Einstein proposed the existence of gravitational waves as part of his theory of relativity, he set in train a pursuit for knowledge that continues nearly a century later. 588 more words
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Jun 04, 2014
In a discovery decades in the making, scientists have detected the first of a “theoretical” class of stars first proposed in 1975 by physicist Kip Thorne and astronomer Anna Żytkow.