Hi Beyhan,

As there are many subtleties to measuring angular momentum in GR, email is a very inefficient means to communicate. If you'd like to, I would be willing to try and address your question over a Google Hangout. 

-Zach

*     *     *
Prof. Zachariah Etienne
Physics & Astronomy Dept.
West Virginia University


On Wed, Mar 4, 2020 at 11:22 AM Beyhan Karakaş <beyhannkarakas@gmail.com> wrote:
Dear to whom it may concern,

  I am interested in determining the spin of the remnant which are resulted from binary neutron star (initially are in irrotational configuration) merger . How could the method to determine the final spin differ (if it does) in case of remnant is a black hole or a neutron star. For the former case, I suppose QuasiLocalMeasures parameter "begin_qlm_calculations_after"  along with AHFinderDirect parameter "find_after_individual" should be set to the time/iteration that the black hole formed. If this is not the case, please clarify how could it be determined? In addition, is there a way to find the evolution of the spin and orbital eccentricity of the binary?

Best regards,

Beyhan.
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