ZEU-THAT

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2017-09-05
16:13
OpenAccess [PUBDB-2017-10367] Preprint/Report
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Polarization of Submillimeter Lines from Interstellar Medium
[arXiv:1707.01015]
 GO
Magnetic fields play important roles in many astrophysical processes. However, there is no universal diagnostic for the magnetic fields in the interstellar medium (ISM) and each magnetic tracer has its limitation. [...]
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2017-08-29
10:28
OpenAccess [PUBDB-2017-10020] Journal Article
; ; ; et al
TeV Cosmic-Ray Anisotropy from the Magnetic Field at the Heliospheric Boundary
ddc:520
We performed numerical calculations to test the suggestion by Desiati and Lazarian that the anisotropies of TeV cosmic rays may arise from their interactions with the heliosphere. For this purpose, we used a magnetic field model of the heliosphere and performed direct numerical calculations of particle trajectories. [...]
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2017-08-24
13:43
OpenAccess [PUBDB-2017-09752] Preprint/Report
; ; ; et al
Astrophysical neutrinos flavored with Beyond the Standard Model physics
[DESY-17-107; arXiv:1707.07684]
 GO
We systematically study the allowed parameter space for the flavor composition of astrophysical neutrinos measured at Earth, including beyond the Standard Model theories at production, during propagation, and at detection. One motivation is to illustrate the discrimination power of the next-generation neutrino telescopes such as IceCube-Gen2. [...]
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2017-08-08
16:03
OpenAccess [PUBDB-2017-08954] Report/Journal Article
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Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
[arXiv:1607.07989] ddc:000
The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation – apart from controlling astrophysical uncertainties. We therefore study the implications of nuclear data and models for cosmic ray astrophysics, which involves the photo-disintegration of nuclei up to iron in astrophysical environments. [...]
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2017-08-08
15:55
OpenAccess [PUBDB-2017-08952] Report/Journal Article
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High energy neutrinos from the tidal disruption of stars
[arXiv:1612.03160] ddc:530
We study the production of high energy neutrinos in jets from the tidal disruption of stars by supermassive black holes. The diffuse neutrino flux expected from these tidal disruption events (TDEs) is calculated both analytically and numerically, taking into account the dependence of the rate of TDEs on the redshift and black hole mass. [...]
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2017-08-08
15:49
arXiv [PUBDB-2017-08950] Report/Journal Article
; ; ; et al
Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
[arXiv:1612.07155 , FERMILAB-PUB-16-618] ddc:530
We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5⋅1018 eV, i.e.~the region of the all-particle spectrum above the so-called "ankle" feature. [...]
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2017-08-08
15:40
OpenAccess [PUBDB-2017-08947] Journal Article/Report/Contribution to a conference proceedings

Interactions of Cosmic Rays around the Universe. Models for UHECR data interpretation
[arXiv:1705.04077]
XLVI International Symposium on Multiparticle Dynamics, ISMD 2016, Meeting locationJeju Island, South Korea, 29 Aug 2016 - 2 Sep 20162016-08-292016-09-02
The European physical journal / Web of Conferences 141, 07001 - (2017) [10.1051/epjconf/201714107001]  GO
ddc:530
Ultra high energy cosmic rays (UHECRs) are expected to be accelerated inastrophysical sources and to travel through extragalactic space before hitting the Earth atmosphere.They interact both with the environment in the source and with the intergalacticphoton fields they encounter, causing different processes at various scales dependingon the photon energy in the nucleus rest frame. UHECR interactions are sensitive touncertainties in the extragalactic background spectrum and in the photo-disintegrationmodels..
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2017-08-08
14:36
arXiv [PUBDB-2017-08916] Report
; ; ; et al
SimProp v2r4: Monte Carlo simulation code for UHECR propagation
[arXiv:1705.03729]
21 p. (2017)
We introduce the new version of SimProp, a Monte Carlo code for simulating the propagation of ultra-high energy cosmic rays in the intergalactic space. This version, SimProp v2r4, together with an overall improvement of the code capabilities with a substantial reduction of the computation time, also computes secondary cosmogenic particles such as electron-positron pairs and gamma rays produced during the propagation of ultra-high energy cosmic rays. [...]
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2017-06-19
14:04
OpenAccess [PUBDB-2017-05457] Journal Article
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Scenarios for Ultrafast Gamma-Ray Variability in AGN
ddc:520
We analyze three scenarios to address the challenge of ultrafast gamma-ray variability reported from active galactic nuclei. We focus on the energy requirements imposed by these scenarios: (i) external cloud in the jet, (ii) relativistic blob propagating through the jet material, and (iii) production of high-energy gamma-rays in the magnetosphere gaps. [...]
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2017-06-06
14:54
OpenAccess [PUBDB-2017-04360] Preprint/Report
; ; ; et al
Cosmic-Ray and Neutrino Emission from Gamma-Ray Bursts with a Nuclear Cascade
[DESY-17-078; arXiv:1705.08909]
 GO
We discuss neutrino and cosmic-ray emission from Gamma-Ray Bursts (GRBs) with the injection of nuclei, where we take into account that a nuclear cascade from photo-disintegration can fully develop in the source. One of our main objectives is to test if recent results from the IceCube and the Pierre Auger Observatory can be accommodated with the paradigm that GRBs are the sources of Ultra-High Energy Cosmic Rays (UHECRs). [...]
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