Secondary Antiprotons and Propagation of Cosmic Rays in the Galaxy and Heliosphere

@article{Moskalenko2002SecondaryAA,
  title={Secondary Antiprotons and Propagation of Cosmic Rays in the Galaxy and Heliosphere},
  author={Igor V. Moskalenko and A. W. Strong and Jonathan F. Ormes and M. S. Potgieter},
  journal={The Astrophysical Journal},
  year={2002},
  volume={565},
  pages={280-296}
}
High-energy collisions of cosmic-ray nuclei with interstellar gas are believed to be the mechanism producing the majority of cosmic-ray antiprotons. Because of the kinematics of the process, they are created with a nonzero momentum; the characteristic spectral shape with a maximum at D2 GeV and a sharp decrease toward lower energies makes antiprotons a unique probe of models for particle propagation in the Galaxy and modulation in the heliosphere. On the other hand, accurate calculation of the… Expand
Cosmic-ray antiprotons in the galaxy
Abstract A key issue in fundamental physics is the nature of non-baryonic dark matter in the universe. Among the candidates proposed by the particle physics community are neutralinos whoseExpand
Propagation of secondary antiprotons and cosmic rays in the Galaxy
Abstract Recent measurements of the cosmic ray (CR) antiproton flux have been shown to challenge existing CR propagation models. It was shown that the reacceleration models designed to matchExpand
ANTIPROTONS AND COSMIC-RAY PROPAGATION IN THE GALAXY
Based on our three-dimensional cosmic-ray (CR) propagation model, we study the behavior of CR antiprotons (CR---> 's), and compare our numerical results with recent experimental data, particularlyExpand
NEW CALCULATION OF ANTIPROTON PRODUCTION BY COSMIC RAY PROTONS AND NUCLEI.
  • Michael Kachelriess, I. Moskalenko, Sergey S Ostapchenko
  • Medicine, Physics
  • The Astrophysical journal
  • 2015
A dramatic increase in the accuracy and statistics of space-borne cosmic ray (CR) measurements has yielded several breakthroughs over the last several years. The most puzzling is the rise in theExpand
Cosmic ray nuclei, antiprotons and gamma rays in the galaxy: a new diffusion model
We model the transport of cosmic ray nuclei in the galaxy by means of a new numerical code. At variance with previous numerical models, ours accounts for a generic spatial distribution of theExpand
Propagation model for cosmic ray species in the Galaxy
Abstract In a recent paper [Astrophys. J. 565 (2002) 280], it has been shown that the flux of secondary cosmic ray (CR) antiprotons appears to be contradictory to measurements of secondary to primaryExpand
Cosmic ray antiprotons at high energies
Cosmic ray antiprotons provide a powerful tool to probe dark matter annihilations in our galaxy. The sensitivity of this important channel is, however, diluted by sizable uncertainties in theExpand
Secondary antiprotons as a Galactic Dark Matter probe
We present a novel determination of the astrophysical uncertainties associated to the secondary antiproton flux originating from cosmic-ray spallation on the interstellar gas. We select a set ofExpand
Study of Cosmic-Ray Light Nuclei Transport with GALPROP
The isotopes 2H and 3He in the cosmic radiation are mainly secondary products from interactions of primary cosmic rays in the interstellar medium. Secondary-to-primary ratios give importantExpand
Cosmic-ray propagation with DRAGON2: II. Nuclear interactions with the interstellar gas
Understanding the isotopic composition of cosmic rays (CRs) observed near Earth represents a milestone towards the identification of their origin. Local fluxes contain all the known stable andExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 124 REFERENCES
Antiprotons from Spallations of Cosmic Rays on Interstellar Matter
Cosmic-ray antiprotons provide an important probe for the study of Galactic dark matter, as they could be produced by neutralino annihilations, primordial black holes evaporations, or other exoticExpand
Cosmic antiprotons as a probe for supersymmetric dark matter
The flux of cosmic-ray antiprotons from neutralino annihilations in the Galactic halo is computed for a large sample of models in the minimal supersymmetric extension of the standard model (MSSM). WeExpand
Cosmic-ray antiprotons and antinuclei
Recent progress in experimental observations and theoretical investigations of cosmic-ray antiprotons (p's) have brought new light on their origin. The p energy spectrum measured by the recent BESSExpand
Cosmic-ray antiprotons, positrons, and gamma rays from halo dark matter annihilation
The subject of cosmic ray antiproton production is reexamined by considering other choices for the nature of the Majorana fermion chi other than the photino considered in a previous article. TheExpand
Antiprotons in the cosmic radiation
Golden et al.1 have demonstrated that the measured ratio of the flux of antiprotons to protons (\[pmacr]/p ratio) is significantly greater than expected from the commonly adopted ‘leaky box’ model ofExpand
Diffuse Galactic γ-rays: Constraining Cosmic-Ray Origin and Propagation
We have developed a model which aims to reproduce observational data of many kinds related to cosmic-ray (CR) origin and propagation: direct measurements of nuclei, antiprotons, electrons andExpand
Propagation of Cosmic-Ray Nucleons in the Galaxy
We describe a method for the numerical computation of the propagation of primary and secondary nucleons, primary electrons, and secondary positrons and electrons. Fragmentation and energy losses areExpand
A Measurement of the Cosmic-Ray Antiproton Flux and a Search for Antihelium
A balloon-borne instrument has measured the cosmic-ray antiproton flux between 130 and 320 MeV and searched for antihelium between 130 and 370 MeV per nuclear. These particles were selected from theExpand
Diffuse Continuum Gamma Rays from the Galaxy
A new study of the diUuse Galactic c-ray continuum radiation is presented, using a cosmic-ray propa- gation model which includes nucleons, antiprotons, electrons, positrons, and synchrotronExpand
Galactic diffusion and the antiproton signal of supersymmetric dark matter
Abstract The leaky box model is now ruled out by measurements of a cosmic ray gradient throughout the galactic disk. It needs to be replaced by a more refined treatment which takes into account theExpand
...
1
2
3
4
5
...