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Related papers: SOLARPROP: Charge-sign Dependent Solar Modulation …

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The flux of ultrahigh energy cosmic rays reaching the Earth is affected by the interactions with the cosmic radiation backgrounds as well as with the magnetic fields that are present along their trajectories. We combine the SimProp cosmic…

High Energy Astrophysical Phenomena · Physics 2021-09-08 Juan Manuel González , Silvia Mollerach , Esteban Roulet

The impact of feedback from Active Galactic Nuclei (AGN) on the cosmological evolution of the large scale structure is a long studied problem. However, it is still not well understood how the feedback energy couples to the ambient medium to…

Cosmology and Nongalactic Astrophysics · Physics 2024-05-20 Rudrani Kar Chowdhury , Suchetana Chatterjee , Ankit Paul , Craig L. Sarazin , Jane Lixin Dai

The AMS02 experiment has published the periodic spectra of proton, helium and helium isotopes across the majority of the 24 solar cycle. These precise data exhibit temporal structures that correlate with solar modulation. In this study, we…

Solar and Stellar Astrophysics · Physics 2024-04-01 Wei-Cheng Long , Juan Wu

DRAGONS (Data Reduction for Astronomy from Gemini Observatory North and South) is a platform for the reduction and processing of astronomical data. The Python-based, open-source package includes infrastructure for automation and algorithms…

In this communication, we focus on the possibility to test General Relativity (GR) with radioscience experiments. We present simulations of observables performed in alternative theories of gravity using a software that simulates…

General Relativity and Quantum Cosmology · Physics 2015-03-11 A. Hees , B. Lamine , S. Reynaud , M. -T. Jaekel , C. Le Poncin-Lafitte , V. Lainey , A. Füzfa , J. -M. Courty , V. Dehant , P. Wolf

The landscape of high- and ultra-high-energy astrophysics has changed in the last decade, largely due to the inflow of data collected by large-scale cosmic-ray, gamma-ray, and neutrino observatories. At the dawn of the multimessenger era,…

Owing to recent advances in radial-velocity instrumentation and observation techniques, the detection of Earth-mass planets around Sun-like stars may soon be primarily limited by intrinsic stellar variability. Several processes contribute…

Solar and Stellar Astrophysics · Physics 2021-12-22 Michael L. Palumbo , Eric B. Ford , Jason T. Wright , Suvrath Mahadevan , Alexander W. Wise , Johannes Löhner-Böttcher

Solar Orbiter will observe the Sun and the inner heliosphere to study the connections between solar activity, coronal structure, and the origin of the solar wind. The plasma instruments on board Solar Orbiter will determine the…

Space Physics · Physics 2020-01-08 Georgios Nicolaou , Daniel Verscharen , Robert T. Wicks , Christopher J. Owen

Understanding the reasons of the cyclic variation of the total solar irradiance is one of the most challenging targets of modern astrophysics. These studies prove to be essential also for a more climatologic issue, associated to the global…

Solar and Stellar Astrophysics · Physics 2011-03-28 P. Ventura , V. Penza , L. Li , S. Sofia , S. Basu , P. Demarque

The direct measurements of electrons and positrons over the last 30 years, corrected for the solar effect in the force-field approximation, are considered. The resulting overall electron spectrum may be fitted with a single power law above…

Astrophysics · Physics 2011-08-19 Diego Casadei , Veronica Bindi

We present here a major upgrade of DRAGON, a numerical package that computes the propagation of a wide set of CR species from both astrophysical and exotic origin in the Galaxy in a wide energy range from tens of MeV to tens of TeV. DRAGON…

High Energy Astrophysical Phenomena · Physics 2013-07-01 Daniele Gaggero , Luca Maccione , Giuseppe Di Bernardo , Carmelo Evoli , Dario Grasso

One of the main obstacles in exoplanet detection when using the radial velocity (RV) technique is the presence of stellar activity signal induced by magnetic regions. In this context, a realistic simulated dataset that can provide…

Solar and Stellar Astrophysics · Physics 2025-01-29 Yinan Zhao , Xavier Dumusque , Michael Cretignier , Khaled Al Moulla , Momo Ellwarth , Ansgar Reiners , Alessandro Sozzetti

Optical metasurfaces can shape the near fields of energetic electrons, enabling Smith-Purcell (SP) emission. We introduce a generalized SP effect relying on finite periodic arrays whose elements possess individually tunable…

When entering the heliosphere, Galactic cosmic rays (GCRs) are influenced by magnetic turbulence and Solar wind disturbances, which cause the so-called "solar modulation" effect. Understanding the time-dependent relationship between the…

High Energy Astrophysical Phenomena · Physics 2019-08-06 Bruna Bertucci , Emanuele Fiandrini , Behrouz Khiali , Nicola Tomassetti

X-ray polarimetry of solar flares is still a not well established field of observation of our star. Past polarimeters were not able to measure with a high significance the polarization in X-rays from solar flares. Moreover, they had no…

A numerical study of QED radiative corrections for the SMC experiment at SPS is been performed. The semi-analytical program POLRAD is been used to get the size of the radiative corrections for the proton to get the size of the radiative…

High Energy Physics - Phenomenology · Physics 2008-11-04 Arif A. Akhundov

Visible-light-absorbing carbonaceous aerosols within the boundary layer affect the radiance and polarization states of the radiation at the top of the atmosphere. Remote sensing from suborbital and satellite-based platforms utilizes these…

Atmospheric and Oceanic Physics · Physics 2021-06-07 Chenchong Zhang , William R. Heinson , Michael J. Garay , Olga Kalashnikova , Rajan K. Chakrabarty

The AMS-02 experiment is measuring the cosmic ray antiproton flux with high precision. The interpretation of the upcoming data requires a thorough understanding of the secondary antiproton background. In this work, we employ newly available…

High Energy Physics - Phenomenology · Physics 2015-06-22 Rolf Kappl , Martin Wolfgang Winkler

Galactic interstellar emission contributes substantially to Fermi LAT observations in the Galactic plane, the location of the majority of supernova remnants (SNRs). To explore some systematic effects on SNRs' properties caused by…

High Energy Astrophysical Phenomena · Physics 2019-08-14 T. J. Brandt , J. Ballet , F. de Palma , G. Johannesson , L. Tibaldo
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