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Big Bang Nucleosynthesis

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... Stellar equation of states
... EOS with ionization
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... Hotter white dwarfs
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... Stellar opacities
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... Ephemeris routines
... Fermi-Dirac functions
... Galactic chemical evolution

... Nuclear reaction networks
... Nuclear statistical equilibrium
... Laminar deflagrations
... CJ detonations
... ZND detonations
... Fitting to conic sections
... Unusual linear algebra
... Derivatives on uneven grids
... Pentadiagonal solver
... Quadratics, Cubics, Quartics
... Supernova light curves
... Exact Riemann solutions
... 1D PPM Hydrodynamics
... Verification problems

... EZ stellar evolution
... FLASH code
... Mesa code
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Contact us:
J.D. Maldonado
F.X.Timmes, my vitae

In this version, the reaction network and thermodynamics are integrated simultaneously. That is, they are fully coupled. This is unlike other bigbang codes such as bbn_new123.f , where a uncoupled method method (do thermodynamics, do burn) is used. The photon and neutrino temperature calculation are also given as an independent program because it is a fun calculation in its own right.

image
abudances vs time
image
abundances vs density
image
zoomed in


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The guts of it
public_bigbang.f
plus these include files:
burn_common.dek
cjdet.dek
const.dek
implno.dek
network.dek
sparse_matrix.dek
tfactors.dek
timers.dek
vector_eos.dek
plus a 13 MB eos data file :
helm_table.dat



image
temperature and density vs time
thermo.f
plus two include files:
implno.dek
const.dek
image
big bang thermodynamics


 



Please cite the relevant references if you publish a piece of work that use these codes, pieces of these codes, or modified versions of them. If you're nice, offer co-authorship of the publication. At best, you'll love these programs so much that you'll send great wads of cash to me.