usine: Semi-analytical models for Galactic cosmic-ray propagation

Maurin, D.

doi:10.1016/j.cpc.2019.106942

Cited by 56 publications

(46 citation statements)

References 62 publications

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“…The minimisation is performed with the minuit package (James & Roos 1975), its minos algorithm also providing accurate (asymmetric) error bars even if the problem is very nonlinear. In practice, the minuit routines are directly called from usine (Maurin 2020). We also carry out O(100) minimisations from different starting points to ensure the true minimum is found (Weinrich et al 2020).…”

Section: Model and Configurations (Big Slim Quaint)mentioning

confidence: 99%

Galactic halo size in the light of recent AMS-02 data

Weinrich

Boudaud

Derome

et al. 2020

A&A

130

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Context. The vertical diffusive halo size of the Galaxy, L, is a key parameter for dark matter indirect searches. It can be better determined thanks to recent AMS-02 data. Aims. We set constraints on L from Be/B and 10Be/Be data, and we performed a consistency check with positron data. We detail the dependence of Be/B and 10Be/Be on L and forecast on which energy range better data would be helpful for future L improvements. Methods. We used USINE V3.5 for the propagation of nuclei, and e+ were calculated with the pinching method. Results. The current AMS-02 Be/B (∼3% precision) and ACE-CRIS 10Be/Be (∼10% precision) data bring similar and consistent constraints on L. The AMS-02 Be/B data alone constrain L = 5−2+3 kpc at a 68% confidence level (spanning different benchmark transport configurations), a range for which most models do not overproduce positrons. Future experiments need to deliver percent-level accuracy on 10Be/9Be anywhere below 10 GV to further constrain L. Conclusions. Forthcoming AMS-02, HELIX, and PAMELA 10Be/9Be results will further test and possibly tighten the limits derived here. Elemental ratios involving radioactive species with different lifetimes (e.g. Al/Mg and Cl/Ar) are also awaited to provide complementary and robuster constraints.

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Section: Model and Configurations (Big Slim Quaint)mentioning

confidence: 99%

Galactic halo size in the light of recent AMS-02 data

Weinrich

Boudaud

Derome

et al. 2020

A&A

130

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“…In the following, we will attempt an astrophysical interpretation of the break in the allelectron spectrum. Most detailed models of CR transport, including the popular GALPROP [45,46], DRAGON [47,48], PICARD [49] and USINE [50] codes, solve the equations underlying CR transport (see below) by assuming a CR source density that is smooth in position and time. Assuming power law spectra (with exponential cut-offs) for the sources, this leads to a rather smooth turn-over in the propagated spectrum, much smoother than the observed break.…”

Section: Introductionmentioning

confidence: 99%

Stochastic cosmic ray sources and the TeV break in the all-electron spectrum

Mertsch

2018

J. Cosmol. Astropart. Phys.

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Despite significant progress over more than 100 years, no accelerator has been unambiguously identified as the source of the locally measured flux of cosmic rays. Highenergy electrons and positrons are of particular importance in the search for nearby sources as radiative energy losses constrain their propagation to distances of about 1 kpc around 1 TeV. At the highest energies, the spectrum is therefore dominated and shaped by only a few sources whose properties can be inferred from the fine structure of the spectrum at energies currently accessed by experiments like AMS-02, CALET, DAMPE, Fermi-LAT, H.E.S.S. and ISS-CREAM. We present a stochastic model of the Galactic all-electron flux and evaluate its compatibility with the measurement recently presented by the H.E.S.S. collaboration. To this end, we have MC generated a large sample of the all-electron flux from an ensemble of random distributions of sources. We confirm the non-Gaussian nature of the probability density of fluxes at individual energies previously reported in analytical computations. For the first time, we also consider the correlations between the fluxes at different energies, treating the binned spectrum as a random vector and parametrising its joint distribution with the help of a pair-copula construction. We show that the spectral break observed in the allelectron spectrum by H.E.S.S. and DAMPE is statistically compatible with a distribution of astrophysical sources like supernova remnants or pulsars, but requires a rate smaller than the canonical supernova rate. This important result provides an astrophysical interpretation of the spectrum at TeV energies and allows differentiating astrophysical source models from exotic explanations, like dark matter annihilation. We also critically assess the reliability of using catalogues of known sources to model the electron-positron flux. arXiv:1809.05104v2 [astro-ph.HE]

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“…The GALPROP 1 team started to distribute CR data as a simple ASCII file [20]. As part of the development of the USINE 2 propagation code [21], our team independently gathered these data and set up the first CR database, called CRDB (Maurin et al [22]); our database comes along with a contextualised presentation of the data and experiments, ASCII file exports (compliant to GALPROP and USINE formats), and online plot generation. Shortly after, the Italian Space Agency (ASI) developed a CR database to host originally ASI-supported experimental data [23].…”

Section: Introductionmentioning

confidence: 99%

Cosmic-Ray Database Update: Ultra-High Energy, Ultra-Heavy, and Antinuclei Cosmic-Ray Data (CRDB v4.0)

et al. 2020

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We present an update on CRDB, the cosmic-ray database for charged species. CRDB is based on MySQL, queried and sorted by jquery and table-sorter libraries, and displayed via PHP web pages through the AJAX protocol. We review the modifications made on the structure and outputs of the database since the first release (Maurin et al., 2014). For this update, the most important feature is the inclusion of ultra-heavy nuclei (Z>30), ultra-high energy nuclei (from 1015 to 1020 eV), and limits on antinuclei fluxes (Z≤−1 for A>1); more than 100 experiments, 350 publications, and 40,000 data points are now available in CRDB. We also revisited and simplified how users can retrieve data and submit new ones. For questions and requests, please contact crdb@lpsc.in2p3.fr.

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usine: Semi-analytical models for Galactic cosmic-ray propagation

Cited by 56 publications

References 62 publications

Galactic halo size in the light of recent AMS-02 data

Galactic halo size in the light of recent AMS-02 data

Stochastic cosmic ray sources and the TeV break in the all-electron spectrum

Cosmic-Ray Database Update: Ultra-High Energy, Ultra-Heavy, and Antinuclei Cosmic-Ray Data (CRDB v4.0)

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