Research in many areas of modern physics and astrophysics such as, e.g.,
indirect searches for dark matter (DM), particle acceleration in SNR shocks,
and the spectrum and origin of extragalactic gamma-ray background, rely heavily
on studies of cosmic rays (CRs) and associated diffuse emissions. New or
improved instrumentation to explore these open issues is ready or under
development. A fleet of ground-based, balloon-borne, and spacecraft instruments
measures many CR species, gamma rays, radio, and synchrotron emission.
Exploiting the data collected by the scientific missions to the fullest
requires reliable and detailed calculations using a numerical model. GALPROP is
the current state-of-the-art numerical CR propagation code that has become a
standard analysis tool in CR and diffuse gamma-ray research. It uses
astrophysical information, nuclear and particle data as input to
self-consistently predict CRs, gamma rays, synchrotron emission and other
observables. This paper reviews recent GALPROP developments and results.Comment: Invited talk at 8th Workshop on Science with the New Generation of
High Energy Gamma-ray Experiments: Gamma-ray Astrophysics in the
Multimessenger Context (SciNeGHE2010, Trieste, Sept. 8-10, 2010); Il Nuovo
Cimento C, v. 034, published onlin
