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Gamma rays from a reverse shock with turbulent magnetic fields in GRB 180720B
Gamma-ray bursts (GRBs) are the most electromagnetically luminous cosmic explosions. They are powered by collimated streams of plasma (jets) ejected...
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Measurement of the forward η meson production rate in p-p collisions at \( \sqrt{\textrm{s}} \) = 13 TeV with the LHCf-Arm2 detector
The forward η mesons production has been observed by the Large Hadron Collider forward (LHCf) experiment in proton-proton collision at
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Effect of the Extragalactic Magnetic Field on Cascade Gamma-Ray Emissions
AbstractThe author considers the intensity of diffuse cascade gamma-ray emissions produced in electromagnetic cascades when ultra-high-energy cosmic...
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Current Particle Detector Arrays in Gamma-Ray Astronomy
LHAASO, which was fully completed and started taking data in July 2021, is currently the most sensitive particle detector array. It has high...
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No room to hide: implications of cosmic-ray upscattering for GeV-scale dark matter
The irreducible upscattering of cold dark matter by cosmic rays opens up the intriguing possibility of detecting even light dark matter in...
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The Muon Puzzle in cosmic-ray induced air showers and its connection to the Large Hadron Collider
High-energy cosmic rays are observed indirectly by detecting the extensive air showers initiated in Earth’s atmosphere. The interpretation of these...
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Searching Lorentz invariance violation from cosmic photon attenuation
Lorentz invariance violation (LIV) can change the threshold behavior predicted by special relativity and cause threshold anomalies which affect the...
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The high energy Universe at ultra-high resolution: the power and promise of X-ray interferometry
We propose the development of X-ray interferometry (XRI), to reveal the Universe at high energies with ultra-high spatial resolution. With baselines...
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GZK Cutoff in Presence of a Specified Modified Dispersion Relation
AbstractIn this study, based on the constraints of modified dispersion relation parameters from Ultra High Energy Cosmic Rays (UHECR), we investigate...
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On the Fractional Version of Cosmic Ray Acceleration Nonlocality
AbstractThe commonly accepted CR transport theory is based on the diffusion equation, which in turn follows from the Boltzmann kinetic equation. The...
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Modeling Source Spectra and Composition of Ultrahigh Energy Cosmic Rays
The inverse problem of cosmic ray transport of ultra-high energy cosmic rays is considered. The source spectrum and composition are derived based on...
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Technique for Detecting High-Energy Electrons and Positrons by Means of Synchrotron Radiation in the Earth’s Magnetic Field
AbstractThe anomalous effect found in the PAMELA experiment is an increase of the fraction of positrons in the total electron–positron flux of...
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Primordial black hole archaeology with gravitational waves from cosmic strings
Light primordial black holes (PBHs) with masses smaller than 10 9 g (10 − 24 M ⊙ ) evaporate before the onset of Big-Bang nucleosynthesis, rendering their...
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The Evolution of Galaxies and Active Galaxies with Cosmic Epoch
Evolutionary changes in the properties of all classes of extragalactic systems with cosmic epoch have been observed in all accessible astronomical...
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Characterisation of cosmic ray induced noise events in AstroSat-CZT imager
The Cadmium Zinc Telluride (CZT) Imager onboard AstroSat consists of pixelated CZT detectors, which are sensitive to hard X-rays above 20 keV. The...
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Planck Scale Kinematics and the Pierre Auger Observatory
Quite unexpectedly, to many of us at least, Planck scale physics has in last years made irruption in present experimental physics. In these lectures...
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Probing UHECR production in Centaurus A using secondary neutrinos and gamma-rays
In this paper the production of neutrinos and photons by ultra high energy cosmic rays (UHECR) interacting with the extragalactic background...
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Multi-messenger Astrophysics with the Highest Energy Counterparts of Gravitational Waves
The first observation of a binary neutron star merger through gravitational waves (GWs) and the detection of its electromagnetic (EM) counterpart in...