DOI: 10.5281/zenodo.14606514
title: Data for Escaping Binary Black Holes That Will Merge within 14 Gyr from 257 models simulated for MOCCA-Survey Database II

description: Each line in the file escaping-merging-BBH-survey2.dat represents data for an escaping binary black hole (BBH) from the test MOCCA Survey Database II. The details of the survey and simulation methodology are described in Hypki et al. (2022): https://ui.adsabs.harvard.edu/abs/2022MNRAS.517.4768H/abstract and Maliszewski et al. (2022): https://ui.adsabs.harvard.edu/abs/2022MNRAS.514.5879M/exportcitation. This dataset has been utilized for the manuscript currently in preparation by Yuetong, Askar et al.

The columns in the file escaping-merging-BBH-survey2.dat are described below:

-----------Escaping binary properties------------- * 1 - identifier  - Integer number to indicate that escaping binary comes from a particular model* 2 - t_escp      - Time that the binary escaped in Myrs* 3 - idd1        - MOCCA ID of the first BH component of the binary* 4 - idd2        - MOCCA ID of the second BH (if idd1 and idd2 differ by 1 then binary is primordial otherwise it formed dynamically)* 5 - ik1         - BSE star type binary component 1 (should be 14 for BH)* 6 - ik2         - BSE star type binary component 2 (should be 14 for BH)* 7 - sm1         - Mass of binary component: BH1 (Msun)* 8 - sm2        - Mass of binary component BH2 (Msun)* 9 - ap         -  Semi-major axis at the time of escape (in units of Solar radii)* 10 - ecc        - Eccentricity of the binary at the time of escape

* 11 - escape_vel - Velocity of escaping object in km/s * 12 - escape_dis - Radial Distance inside the cluster before escape (pc)* 13 - escape_ene - Energy of escaping binary [physical units]* 14 - escang     - total angular momentum of the escaping object [pc*km/s*Msun]* 15 - iekind     - kind of escaping object* 16 - ietype     - reason for escaper ("0 - if some velocity is assigned in relax.f,                         "1 - relaxation case of escape, "2 - twobody case of escape,                         "3 - binsin case of escape", ", 4 - binbin case of escape)* 17 - esctime      - escape time in Myr reported in escape.dat (should be similar/equal to t_escp)* 18 -  mass_ratio    - mass ratio of binary components (q = m_small/m_large)* 19 - chirp_mass      - chirp mass calculated from masses of binary components* 20 -  t_GW_approx    - merger time due to GW radiation in Myr (approximate calculation from Peters formula)* 21 - t_delay_approx - delay time in [Myr] = escape time + t_GW_approx* 22 - hist1 - compact history of binary component 1* 23 - hist2 - compact history of binary component 2* 24 - outputID - output ID of the escaping binary* 25 - nkick - flag for object (NS/BH) which recieved natal kick because of supernovae explosion: (0: no kick 1: kick single star 2: binary cm 3: binary merger 4: binary first component 5: binary second component 6: wd kick 7: GR kick)\-----------Initial cluster properties (T=0)------------- 

* 26 - smt0  - Initial mass of the cluster in units of solar mass* 27 - rh0   - Initial half-mass radius of the cluster model in pc* 28 - rc0   - Initial core radius of the cluster model in pc* 29 - rho0  - Initial central density of the cluster (in units of Solar mass/pc^3)* 30 - u1_0  - Initial central potential of the cluster (scaled to (km/s)^2)* 31 - vc_0  - Initial central velocity of the cluster model in units of km/s (mass weighted)* 32 - rtid_0   - Initial tidal radius of the cluster model in pc* 33 - num_0    - Initial number of objects in the cluster (single+binary) - binary is counted as 1* 34 - nbb_0  - Initial number of binaries in the cluster

-----------Cluster properties at the time the binary escaped------------- 

* 35 - smt_esc  - Mass of the cluster in units of solar mass at escape time* 36 - rh_esc   - Half-mass radius of the cluster model in pc  at escape time* 37 - rc_esc   - Core radius of the cluster model in pc  at escape time* 38 - rho_esc  - Central density of the cluster (in units of Solar mass/pc^3)  at escape time* 39 - u1__esc  - Central potential of the cluster (scaled to (km/s)^2)  at escape time* 40 - vc_esc   - Central velocity of the cluster model in units of km/s (mass weighted)  at escape time* 41 - rt_esc   - Tidal radius of the cluster model in pc at escape time* 42 - num_esc   - Numebr of objects in the cluster at escape time* 43 - nbb_esc   - Numebr of binaries in the cluster at escape time* 44 - max_sbh  - Maximum mass of a single BH in the cluster at escape time (Msun)* 45 - max_bbh  - Maximum mass of a BH in a binary system in the cluster at escape time (Msun)* 46 - max_bbh  - Central surface brightness of the cluster at escape time (in units of Lsun/pc^2)-----------Merger and Delay Time------------- * 47 - t_merge - Merger time due to GW radiation in Myr (full integration of Peters equations; more accurate than column 20)* 48 - t_delay - Actual merger time Escape time + t_merge (in column 47)

* 49 - path to cluster model  - Simulation/workspace path containing the simulated cluster data