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It is likely that ultra-high energy cosmic rays contain a significant component of heavy or intermediate mass nuclei. The propagation of ultra-high energy nuclei through cosmic radiation backgrounds is more complicated than that of protons…

Astrophysics · Physics 2014-11-18 Dan Hooper , Subir Sarkar , Andrew M. Taylor

To use strong gravitational lenses as an astrophysical or cosmological probe, models of their mass distributions are often needed. We present a new, time-efficient automation code for uniform modeling of strongly lensed quasars with GLEE, a…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-29 S. Ertl , S. Schuldt , S. H. Suyu , T. Schmidt , T. Treu , S. Birrer , A. J. Shajib , D. Sluse

We present a synthetic galaxy lightcone specially designed for narrow-band optical photometric surveys. To reduce time-discreteness effects, unlike previous works, we directly include the lightcone construction in the \texttt{L-Galaxies}…

We present a flexible, detailed model for the evolution of galactic discs in a cosmological context since $z\approx 4$, including a physically-motivated model for radial transport of gas and stars within galactic discs. This expansion…

Astrophysics of Galaxies · Physics 2019-06-19 John C. Forbes , Mark R. Krumholz , Joshua S. Speagle

The study of ultra-high energy cosmic rays (UHECR) at Earth cannot prescind from the study of their propagation in the Universe. In this paper, we present HERMES, the \emph{ad hoc} Monte Carlo code we have developed for the realistic…

Instrumentation and Methods for Astrophysics · Physics 2013-05-21 Manlio De Domenico

The propagation of Galactic Cosmic Ray nuclei having energies between 100 MeV/nuc and several PeV/nuc is strongly believed to be of diffusive nature. The particles emitted by a source located in the disk do not pervade the whole Galaxy, but…

Astrophysics · Physics 2009-11-07 Richard Taillet , David Maurin

To understand the origin of ultra-high energy cosmic rays (UHECRs, defined to be above 10^18 eV), it is required to model in a realistic way their propagation in the Universe. UHECRs can interact with low energy radio, microwave, infrared…

Astrophysics · Physics 2008-11-26 E. Armengaud , G. Sigl , T. Beau , F. Miniati

We present CIGALE (Burgarella et al. 2005; Noll et al. 2009), a software developed at the Laboratoire d'Astrophysique de Marseille to fit galaxy spectral energy distributions from the rest-frame far-UV to far-IR wavelength range, and to…

Cosmology and Nongalactic Astrophysics · Physics 2011-11-07 Yannick Roehlly , Denis Burgarella , Véronique Buat , Élodie Giovannoli , Stefan Noll , Paolo Serra

The NUCLEON experiment was designed to study the chemical composition and energy spectra of galactic cosmic ray nuclei from protons to zinc at energies of $\sim10^{11}$--$10^{15}$\,eV per particle. The research was carried out with the…

We have developed a new model that uses a cellular approach to calculate radiative transfer of starlight through dusty media. The model is designed to be user friendly enough to be distributed as a tool for use by the general astronomical…

Astrophysics · Physics 2009-09-25 Matthew Trewhella , Barry F. Madore , Leslie Kuchinski

Although the recent experimental efforts to improve the observation of Ultra-High Energy Cosmic Rays (UHECRs) above $10^{18}$ eV, the origin and the composition of such particles is still unknown. In this work, we present the novel Monte…

High Energy Astrophysical Phenomena · Physics 2013-07-17 Manlio De Domenico , Haris Lyberis , Mariangela Settimo

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, coinciding with proton and helium.…

High Energy Astrophysical Phenomena · Physics 2019-01-09 Wei Liu , Yu-hua Yao , Yi-Qing Guo

The interpretation of experimental data of ultra-high energy cosmic rays (UHECRs) above 10^17 eV is still under controversial debate. The development and improvement of numerical tools to propagate UHECRs in galactic and extragalactic space…

We present an empirical yet physically motivated simulation of realistic Lyman-$\alpha$ emitters (LAEs) at $z\sim2-3$, crucial for ongoing and forthcoming cosmological LAE surveys. We combine an empirical $\mathtt{UniverseMachine}$…

Astrophysics of Galaxies · Physics 2025-12-01 Hasti Khoraminezhad , Shun Saito , Max Gronke , Chris Byrohl

Deuterons are the most abundant secondary cosmic ray species in the Galaxy, but their study has been severely limited due to experimental challenges. In an era with new experiments and high-precision measurements in cosmic rays, having a…

High Energy Astrophysical Phenomena · Physics 2023-07-28 Diego Mauricio Gomez-Coral , Cory Gerrity , Riccardo Munini , Philip von Doetinchem

Photometric data of galaxies covering the rest-frame wavelength range from far-UV to far-IR make it possible to derive galaxy properties with a high reliability by fitting the attenuated stellar emission and the related dust emission at the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 S. Noll , D. Burgarella , E. Giovannoli , V. Buat , D. Marcillac , J. C. Munoz-Mateos

Tentative observations of cosmic-ray antihelium by the AMS-02 collaboration have re-energized the quest to use antinuclei to search for physics beyond the standard model. However, our transition to a data-driven era requires more accurate…

High Energy Astrophysical Phenomena · Physics 2024-04-23 Pedro De La Torre Luque , Martin Wolfgang Winkler , Tim Linden

The secondary/primary cosmic-ray ratios and the diffuse backgrounds of gamma rays and neutrinos provide us with complementary information about the transport of Galactic cosmic rays~(CRs). We used the recent measurement of the diffuse gamma…

High Energy Astrophysical Phenomena · Physics 2025-06-13 Antonio Ambrosone , Carmelo Evoli , Benedikt Schroer , Pasquale Blasi

We describe an algorithm to decompose deep images of Active Galactic Nuclei into host galaxy and nuclear components. Currently supported are three galaxy models: A de-Vaucouleurs spheroidal, an exponential disc, and a two-component…

Astrophysics · Physics 2009-11-10 B. Kuhlbrodt , L. Wisotzki , K. Jahnke

A new Monte Carlo simulation code for the propagation of Ultra High Energy Cosmic Rays is presented. The results of this simulation scheme are tested by comparison with results of another Monte Carlo computation as well as with the results…

High Energy Astrophysical Phenomena · Physics 2013-06-04 R. Aloisio , D. Boncioli , A. F. Grillo , S. Petrera , F. Salamida
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