By exploiting experimental results, the combined effort of the physicists involved with the Galprop  model for propagation in galaxy and HelMod for the propagation in heliosphere, the local interstellar spectra (LIS) for Galactic Cosmic Rays species  up to Z=28 (Nickel) were derived. These spectra are available and accessible from the current webpage.

Table_InPreparationLIS

Some of the currently available LIS's were derived accounting for AMS-02 data published up to TV rigidity region. The exploitation of AMS-02 data allowed one to approach the procedure with high statistic data of unprecedent accuracy. Currently, for cosmic rays species with Z>8,  HEAO3-C2 observations at Earth (from october 1979 to June 1980) were employed. Furthermore, it has be be remarked that he ratio between HEAO3-C2 normalized LIS and AMS-02 normalized LIS was estimated to be 1.049$$\pm$$0.069. for Boron, Beryllium, Oxygen, Carbon and Nitrogen CRs.

### Galprop-HelMod join effort

Currently published articles regarding local interstellar spectra (LIS):
• Solution of Heliospheric Propagation: Unveiling the Local Interstellar Spectra of Cosmic Ray Species Astrophys. J. 840:115, 2017
• HELMOD In The Works: From Direct Observations To The Local Interstellar Spectrum Of Cosmic-Ray Electrons Astrophys. J. 854:94, 2018
• Deciphering the Local Interstellar Spectra of Primary Cosmic-Ray Species with HelMod Astrophys. J. 858:61, 2018
• Deciphering the Local Interstellar Spectra of Secondary Nuclei with the Galprop/Helmod Framework and a Hint for Primary Lithium in Cosmic Rays Astrophys. J. 889:167, 2020