  Hagedorn states (HS) are a tool to model the hadronization process which
occurs in the phase transition phase between the quark gluon plasma (QGP) and
the hadron resonance gas (HRG). Their abundance is believed to appear near the
Hagedorn temperature $T_H$ which in our understanding equals the critical
temperature $T_c$. These hadron-like resonances are characterized by being very
massive and by not being limited to quantum numbers of known hadrons. To
generate a whole zoo of such new states we solve the covariantly formulated
bootstrap equation by regarding energy conservation and conservation of the
baryon number $B$, strangeness $S$ and electric charge $Q$. To investigate
their decay properties decay chain calculations of HS were conducted. One
single (heavy) HS with certain quantum numbers decays by various two-body decay
channels subsequently into final stable hadrons. Multiplicities of these stable
hadrons, their ratios and their energy distributions are presented. Strikingly
the final energy spectra of resulting hadrons show a thermal-like distribution
with the characteristic Hagedorn temperature $T_H$. All hadronic properties
like masses, spectral functions etc. are taken from the hadronic transport
model Ultra Relativistic Quantum Molecular Dynamics (UrQMD).
