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Equation of State Effects on Gravitational Waves from Rotating Core Collapse

Richers, Sherwood; Ott, Christian David; Abdikamalov, Ernazar; O'Connor, Evan; Sullivan, Chris


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    <dct:title>Equation of State Effects on Gravitational Waves from Rotating Core Collapse</dct:title>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2016</dct:issued>
    <dcat:keyword>gravitational wave</dcat:keyword>
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    <dct:description>&lt;p&gt;Gravitational waveforms from 1824 fiducial and detailed electron capture simulations, sampled at 65535 Hz. The file is in HDF5 format, using the flags {dtype="f4",compression="gzip",shuffle=True,fletcher32=True}. Each group is contained in the "waveforms" top-level group and is named with the "A" and "omega_0" values from Equation 5 and the EOS. In each sub-group is a dataset containing timestamps in seconds (t=0 is core bounce) and a dataset containing the strain multiplied by the distance in centimeters. The values of A in kilometers, omega_0 in radians/s, and the EOS are stored as attributes of each group.&lt;/p&gt; &lt;p&gt;In addition, the Ye(rho) profiles are stored in the "yeofrho" top-level group. Each sub-group is labeled by the EOS used to generate the profile.&lt;/p&gt; &lt;p&gt;Finally, select reduced data is stored in the "reduced_data" top-level group. The following quantities are each stored as a 1824-element array, where elements of the same index from different datasets correspond to the same 2D simulation.&lt;/p&gt; &lt;p&gt;A(km) -- differential rotation parameter in Equation 5&lt;br&gt; D*bounce_amplitude_1(cm) -- The minimum of the first (negative) GW strain peak, multiplied by distance.&lt;br&gt; D*bounce_amplitude_2(cm) -- The maximum of the second (positive) GW strain peak, multiplied by distance.&lt;br&gt; EOS -- the equation of state used in the simulation&lt;br&gt; MbarICgrav(Msun) -- gravitational mass of the inner core, averaged over time after core bounce&lt;br&gt; Mgrav1_IC_b(Msun) -- gravitational mass of the inner core at bounce&lt;br&gt; Mrest_IC_b(Msun) -- rest mass of the inner core at bounce&lt;br&gt; SNR(aLIGOfrom10kpc) -- signal to noise ratio of the GW signal, assuming a distance of 10kpc and aLIGO sensitivity&lt;br&gt; T_c_b(MeV) -- central temperature at bounce&lt;br&gt; Ye_c_b -- central electron fraction at bounce&lt;br&gt; alpha_c_b -- central lapse at bounce&lt;br&gt; beta1_IC_b -- ratio of rotational kinetic to gravitational potential energy of the inner core at bounce&lt;br&gt; fpeak(Hz) -- frequency of the post-bounce GW oscillations&lt;br&gt; j_IC_b() -- angular momentum of the inner core at bounce&lt;br&gt; omega_0(rad|s) -- initial (pre-collapse) rotation rate used in Equation 5&lt;br&gt; omega_max(rad|s) -- maximum rotation rate achieved outside of 5km&lt;br&gt; rPNSequator_b(km) -- radius of the rho=10^11 g/ccm contour along the equator at bounce&lt;br&gt; rPNSpole_b(km) -- radius of the rho=10^11 g/ccm contour along the pole at bounce&lt;br&gt; r_omega_max(km) -- radius where omega_max occurs&lt;br&gt; rho_c_b(g|ccm) -- central density at bounce (not time averaged)&lt;br&gt; rhobar_c_postbounce(g|ccm) -- central density time averaged after bounce&lt;br&gt; s_c_b(kB|baryon) -- central entropy at bounce&lt;br&gt; t_postbounce_end(s) -- time of the end of the postbounce signal (t=0 is core bounce)&lt;br&gt; tbounce(s) -- time of core bounce (t=0 is the beginning of the simulation)&lt;br&gt;  &lt;/p&gt;</dct:description>
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