J/ApJ/858/61 Carbon and Oxygen local interstellar spectra (Boschini+, 2018) ================================================================================ Deciphering the local interstellar spectra of primary cosmic-ray species with HelMod. Boschini M.J., Torre S.D., Gervasi M., Grandi D., Johannesson G., La Vacca G., Masi N., Moskalenko I.V., Pensotti S., Porter T.A., Quadrani L., Rancoita P.G., Rozza D., Tacconi M. =2018ApJ...858...61B ================================================================================ ADC_Keywords: Models ; Interstellar medium Keywords: cosmic rays; diffusion; elementary particles; interplanetary medium; ISM: general; Sun: heliosphere Abstract: Local interstellar spectra (LIS) of primary cosmic ray (CR) nuclei, such as helium, oxygen, and mostly primary carbon are derived for the rigidity range from 10MV to ~200TV using the most recent experimental results combined with the state-of-the-art models for CR propagation in the Galaxy and in the heliosphere. Two propagation packages, GALPROP and HelMod, are combined into a single framework that is used to reproduce direct measurements of CR species at different modulation levels, and at both polarities of the solar magnetic field. The developed iterative maximum-likelihood method uses GALPROP- predicted LIS as input to HelMod, which provides the modulated spectra for specific time periods of the selected experiments for model-data comparison. The interstellar and heliospheric propagation parameters derived in this study are consistent with our prior analyses using the same methodology for propagation of CR protons, helium, antiprotons, and electrons. The resulting LIS accommodate a variety of measurements made in the local interstellar space (Voyager 1) and deep inside the heliosphere at low (ACE/CRIS, HEAO-3) and high energies (PAMELA, AMS-02). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table5.dat 19 270 Carbon local interstellar spectra (LIS) table6.dat 19 270 Oxygen local interstellar spectra (LIS) -------------------------------------------------------------------------------- See also: J/ApJ/831/18 : H to Ni intensities in LISM from Voyager 1 (Cummings+, 2016) J/ApJ/840/115 : LIS of cosmic-ray species (Boschini+, 2017) Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 9 E9.3 GV Ri [0.093/202400] Magnetic rigidity 11- 19 E9.3 m-2/s/sr/GV Int [1e-12/8.2] Differential intensity -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 9 E9.3 GV Ri [0.097/210200] Magnetic rigidity 11- 19 E9.3 m-2/s/sr/GV Int [9.6e-13/8.2] Differential intensity -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDs] 18-Mar-2019