Equations of State


This figure shows the mass-radius relation for cold neutron stars in beta-equilibrium for the supernova EOS tables from below, two EOS by Lattimer and Swesty, NPA 535 (1991) (LS180 and LS220), and Shen et al., PTP 100 (1998) (STOS). The horizontal lines show the constraint from pulsar PSR J0348+0432 measured by Antoniadis et al., Science 340 (2013). The grey shaded regions show the one- and two-sigma regions from neutron star observations derived by Steiner et al., ApJ 722 (2010).

All tables are compressed zip-files. Some of the older files still have a password protection, which I will remove soon. For the DD2 tables, the password is "sneos_dd2", for the other tables it is "sneos" or there is none. Please contact me if you have any questions. If you have problems with opening the binary files, I can also provide you ASCII tables. The EOS tables are calculated including all heavy and light nuclei which are available in the corresponding mass tables, if not stated otherwise. For more details see the Manual v1.04 and the list of References. You might also want to have a look at the Version history (29.01.2015).

The EOS tables and corresponding drivers are also availabe on www.stellarcollapse.org, in a format for use in the GR1D code provided by the Caltech computational relativistic astrophysics group. Below you find the original tables which were used as input on www.stellarcollapse.org.

The EOSs are also listed in the CompOSE database, http://compose.obspm.fr, in a special advanced format. CompOSE is the EOS database from the Compstar network and it provides a comprehensive and very useful EOS manual and also table interpolation.

Recent versions (v1.0 - v1.04):

The EOS tables are given in two different formats:
Furthermore, there are routines for the full nuclear composition: and tables with single-particle properties of unbound nucleons, which are required, e.g., for weak charge current rates:
RMF interactions/mass table extended format nuclear composition Shen 98 format single-particle properties
TMA/Geng et al. tma_geng_bin.zip tma_geng_comp.zip tma_geng_shen98format.zip tma_geng_spp.zip
TM1/Geng et al. tm1_geng_bin.zip tm1_geng_comp.zip tm1_geng_shen98format.zip tm1_geng_spp.zip
FSUgold/Roca-Maza fsg_roca_bin.zip fsg_roca_comp.zip fsg_roca_shen98format.zip fsg_roca_spp.zip
NL3/Lalazissis et al. nl3_lala_bin.zip nl3_lala_comp.zip nl3_lala_shen98format.zip nl3_lala_spp.zip
DD2/FRDM dd2_frdm_bin.zip dd2_frdm_comp.zip dd2_frdm_shen98format.zip dd2_frdm_spp.zip
SFHo/FRDM sfho_frdm_bin.zip sfho_frdm_comp.zip sfho_frdm_shen98format.zip sfho_frdm_spp.zip
SFHx/FRDM sfhx_frdm_bin.zip sfhx_frdm_comp.zip sfhx_frdm_shen98format.zip sfhx_frdm_spp.zip
IUFSU/Roca-Maza iuf_roca_bin.zip iuf_roca_comp.zip iuf_roca_shen98format.zip iuf_roca_spp.zip
BHBΛ/FRDM bhb_l_frdm_bin.zip bhb_l_frdm_comp.zip bhb_l_frdm_shen98format.zip ---
BHBΛφ/FRDM bhb_lp_frdm_bin.zip bhb_lp_frdm_comp.zip bhb_lp_frdm_shen98format.zip ---

Special treatment of light nuclei

In the following you find links to EOS tables for TM1/Geng et al., in which only a selection of light nuclei with Z ≤ 5 is included. The passwords for these tables are "sneos_a", "sneos_ad", and "sneos_adt":
considered light nuclei extended format nuclear composition Shen 98 format
only alphas tm1_geng_bin_a.zip tm1_geng_comp_a.zip tm1_geng_shen98format_a.zip
only alphas and deuterons tm1_geng_bin_ad.zip tm1_geng_comp_ad.zip tm1_geng_shen98format_ad.zip
only alphas, deuterons and tritons tm1_geng_bin_adt.zip tm1_geng_comp_adt.zip tm1_geng_shen98format_adt.zip

Animated results

Nuclear composition for the simulation of the core-collapse supernova of the 15 Msun progenitor from Woosley and Weaver (1995) and the TM1 EOS. Simulation performed by T. Fischer (GSI, Darmstadt). Description of the used core collapse model (spherically symmetric, general relativistic radiation hydrodynamics and three flavor Boltzmann neutrino transport in Fischer et al. (2009) and references therein. The shown time is the post-bounce time. Note that the animation time scale is set by the time-steps used in the simulation. For details, see the article New equations of state in core-collapse supernova simulations in the reference section.

Nuclear distributions:

Mass fractions:

Outer crust of cold neutron stars — ISOLTRAP+AME2012



Outer crust of cold neutron stars — AME2003