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.
<Astrophys. J., 858, 61 (2018)>
=2018ApJ...858...61B 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 19 270 Carbon local interstellar spectra (LIS)
table6.dat 19 270 Oxygen local interstellar spectra (LIS)
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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
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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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
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDs] 18-Mar-2019