# Constraints on Cosmic-ray Propagation Models from A Global Bayesian Analysis

@article{Trotta2011ConstraintsOC, title={Constraints on Cosmic-ray Propagation Models from A Global Bayesian Analysis}, author={Roberto Trotta and Guðlaugur J{\'o}hannesson and Igor V. Moskalenko and Troy A. Porter and R. Ruiz de Austri and A. W. Strong}, journal={The Astrophysical Journal}, year={2011}, volume={729}, pages={106} }

Research in many areas of modern physics such as, e.g., indirect searches for dark matter and particle acceleration in supernova remnant shocks rely heavily on studies of cosmic rays (CRs) and associated diffuse emissions (radio, microwave, X-rays, γ-rays). While very detailed numerical models of CR propagation exist, a quantitative statistical analysis of such models has been so far hampered by the large computational effort that those models require. Although statistical analyses have been… Expand

#### Figures and Tables from this paper

#### 207 Citations

GALPROP cosmic-ray propagation code: recent results and updates

- Physics
- 2017

Information on cosmic-ray (CR) composition comes from direct CR measurements while their distribution in the Galaxy is evaluated from observations of their associated diffuse emission in the range… Expand

Secondary cosmic-ray nuclei from supernova remnants and constraints on the propagation parameters

- Physics
- 2012

Context. The secondary-to-primary boron-to-carbon (B/C) ratio is widely used to study the cosmic-ray (CR) propagation processes in the Galaxy. It is usually assumed that secondary nuclei such as… Expand

Modelling the cosmic ray electron propagation in M 51

- Physics
- 2016

Cosmic ray electrons (CREs) are a crucial part of the ISM and are observed via synchrotron emission. While much modelling has been carried out on the CRE distribution and propagation of the Milky… Expand

GALPROP Code for Galactic Cosmic Ray Propagation and Associated Photon Emissions

- Physics
- 2011

Recent years are marked with many breakthroughs in astrophysics of cosmic rays (CRs), and more are expected in the nearest future. Their proper interpretation is impossible without a welldeveloped… Expand

Connections between cosmic-ray physics, gamma-ray data analysis and Dark Matter detection

- Physics
- 2015

Cosmic-ray (CR) physics has been a prolific field of research for over a century. The open problems related to CR acceleration, transport and modulation are deeply connected with the indirect… Expand

Bayesian analysis of cosmic-ray propagation: evidence against homogeneous diffusion

- Physics
- 2016

We present the results of the most complete ever scan of the parameter space for cosmic ray (CR) injection and propagation. We perform a Bayesian search of the main GALPROP parameters, using the… Expand

A Model Independent Method to Study Dark Matter induced Leptons and Gamma rays

- Physics
- 2011

By using recent data, we directly determine the dark matter (DM) induced $e^\pm$ spectrum at the source from experimental measurements at the earth, without reference to specific particle physics… Expand

A genetic algorithm for astroparticle physics studies

- Computer Science, Physics
- Comput. Phys. Commun.
- 2020

A genetic algorithm for finding the optimum parameters for cosmic ray injection and propagation is presented and it is found that this algorithm gives the same best fit results as the Markov Chain Monte Carlo but consuming less computing power by nearly 2 orders of magnitudes. Expand

Cosmic-ray Acceleration and Propagation

- Physics
- 2015

The origin of cosmic rays (CRs) has puzzled scientists since the pioneering discovery by Victor Hess in 1912. In the last decade, however, modern supercomputers have opened a new window on the… Expand

Revisiting Spatial-Dependent Propagation Model with Latest Observations of Cosmic Ray Nuclei

- Physics
- 2018

Recently AMS-02 collaboration publish their measurements of light cosmic-ray nuclei, including lithium, beryllium, boron, carbon and oxygen. All of them reveal a prominent excess above $\sim$ 200 GV,… Expand

#### References

SHOWING 1-10 OF 70 REFERENCES

Cosmic Rays below Z = 30 in a Diffusion Model: New Constraints on Propagation Parameters

- Physics
- 2001

Cosmic-ray nuclei fluxes are expected to be measured with high precision in the near future. For instance, high-quality data on the antiproton component could give important clues about the nature of… Expand

Propagation of Cosmic-Ray Nucleons in the Galaxy

- Physics
- 1998

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 are… Expand

A Markov Chain Monte Carlo technique to sample transport and source parameters of Galactic cosmic rays - II. Results for the diffusion model combining B/C and radioactive nuclei

- Physics
- 2010

Context. Ongoing measurements of the cosmic radiation (nuclear, electronic, and γ-ray) are providing additional insight into cosmicray physics. A comprehensive picture of these data relies on an… Expand

Models for galactic cosmic-ray propagation

- Physics
- 2001

A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray and gamma-ray production and propagation in 2D or 3D, including a full reaction… Expand

β–radioactive cosmic rays in a diffusion model: Test for a local bubble?

- Physics
- 2002

In a previous analysis, Maurin et al. (2001) have constrained several parameters of the cosmic ray diusive propagation (the diusion coecient normalization K0 and its spectral index , the halo… Expand

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

- Physics
- 2002

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… Expand

Diffuse Continuum Gamma Rays from the Galaxy

- Physics
- 2000

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 synchrotron… Expand

Diffuse Galactic continuum gamma rays. A model compatible with EGRET data and cosmic-ray measurements

- Physics
- 2004

We present a study of the compatibility of some current models of the diffuse Galactic continuum � -rays with EGRET data. A set of regions sampling the whole sky is chosen to provide a comprehensive… Expand

Additional acceleration of cosmic rays in the interstellar medium

- Physics
- 1981

The effects of reacceleration on cosmic rays have been studied over a wide charge and energy range using a model of reacceleration by the interstellar turbulence. We take into account only inevitable… Expand

Global cosmic-ray-related luminosity and energy budget of the Milky Way

- Physics
- 2010

We use the GALPROP code for cosmic-ray (CR) propagation to calculate the broadband luminosity spectrum of the Milky Way related to CR propagation and interactions in the interstellar medium. This… Expand