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farr / AlignedVersusIsoSpin

A calculation and paper comparing aligned and isotropic black hole spin models.
MIT License
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Mass-Ratio Distribution Matters #10

Closed farr closed 7 years ago

farr commented 7 years ago

This point from Ben Farr:

the ability to constrain effective spin for individual systems does depend on the mass ratio of the binary; in general, the effective spin will be better constrained for equal-mass systems than unequal-mass systems. I don't expect this to qualitatively affect your results, but it's important caveat that could affect the number of systems that will be necessary to constrain the population.

ilyamandel commented 7 years ago

Total masses, inclinations, etc. matter too. I really think that what we should do is to add a sentence (probably in section 1.1) with a description of what \chi_eff measurement uncertainties are assumed for the next 10 events, along with a generic caveat that these measurement uncertainties will depend on the masses of the events and other parameters.

farr commented 7 years ago

That's exactly what I intend to do right now (interrupted by dinner, Katherine's bedtime, etc, but coming back to the text now). Going forward, I think it would be good for Ben to provide his results in an Appendix; they show that, more-or-less, the dependence is primarily on mass ratio across a broad range of masses, if I understood him in our conversation yesterday.

On 12 Apr 2017, at 18:45, Ilya Mandel notifications@github.com wrote:

Total masses, inclinations, etc. matter too. I really think that what we should do is to add a sentence (probably in section 1.1) with a description of what \chi_eff measurement uncertainties are assumed for the next 10 events, along with a generic caveat that these measurement uncertainties will depend on the masses of the events and other parameters.

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