ZEU-THAT

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2018-01-29
13:18
[PUBDB-2018-00905] Talk (non-conference)

Energy spectra cut-offs as a probe of the accelerator
Seminar, Meeting locationNiels Bohr Institute Copenhagen, Denmark, 6 Nov 2017 - 6 Nov 20172017-11-062017-11-06

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2018-01-29
13:16
[PUBDB-2018-00904] Conference Presentation

Probing extragalactic sources through transport
35th International Cosmic Ray Conference, ICRC2017, Meeting locationBusan, Korea, 6 Jul 2017 - 6 Jul 20172017-07-062017-07-06

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2018-01-11
15:52
OpenAccess [PUBDB-2018-00545] Journal Article
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Attenuation of TeV $\gamma$-rays by the starlight photon field of the host galaxy
ddc:520
The absorption of TeV $\gamma$-ray photons produced in relativistic jets by surrounding soft photon fields is a long-standing problem of jet physics. In some cases, the most likely emission site close to the central black hole is ruled out because of the high opacity caused by strong optical and infrared photon sources, such as the broad-line region. [...]
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2018-01-11
15:50
OpenAccess [PUBDB-2018-00544] Journal Article
; ; ; et al
Nonlinear Particle Acceleration and Thermal Particles in GRB Afterglows
ddc:520
The standard model for GRB afterglow emission treats the accelerated electron population as a simple power law, $N(E)\propto {E}^{-p}$ for $p\gtrsim 2$. However, in standard Fermi shock acceleration, a substantial fraction of the swept-up particles do not enter the acceleration process at all. [...]
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2018-01-11
11:29
Embargoed OpenAccess [PUBDB-2018-00466] Report/Journal Article
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SimProp v2r4: Monte Carlo simulation code for UHECR propagation
[arXiv:1705.03729] ddc:530
We introduce the new version of SimProp, a Monte Carlo code for simulating the propagation of ultra-high energy cosmic rays in intergalactic space. This version, SimProp v2r4, together with an overall improvement of the code capabilities with a substantial reduction in 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. [...]
Published on 2017-11-08. Available in OpenAccess from 2018-11-08.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

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2018-01-11
11:25
OpenAccess [PUBDB-2018-00464] Journal Article
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Gamma–Gamma Absorption in the $\gamma$-ray Binary System PSR B1259-63/LS 2883
ddc:520
The observed TeV light curve from the γ-ray binary PSR B1259-63/LS 2883 shows a decrease in the flux at periastron that has not been fully explained by emission mechanisms alone. This observed decrease can, however, be explained by γγ absorption due to the stellar and disk photons. [...]
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2018-01-11
10:55
OpenAccess [PUBDB-2018-00443] Journal Article
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Impact of red giant/AGB winds on active galactic nucleus jet propagation
ddc:520
Context. Dense stellar winds may mass-load the jets of active galactic nuclei, although it is unclear on what time and spatial scales the mixing takes place.Aims. [...]
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2017-12-20
11:26
OpenAccess [PUBDB-2017-13831] Report/Journal Article
; ; ; et al
Astrophysical neutrinos flavored with beyond the Standard Model physics
[DESY-17-107; arXiv:1707.07684] ddc:530
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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2017-12-20
11:21
OpenAccess [PUBDB-2017-13830] Preprint/Report
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Neutrinos and Ultra-High-Energy Cosmic-Ray Nuclei from Blazars
[arXiv:1711.02091]
 GO
We discuss the production of ultra-high-energy cosmic ray (UHECR) nuclei and neutrinos from blazars. We compute the nuclear cascade in the jet for both BL Lac objects and flat-spectrum radio quasars (FSRQs), and in the ambient radiation zones for FSRQs as well. [...]
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2017-12-20
11:18
OpenAccess [PUBDB-2017-13829] Preprint/Report
; ; ; et al
Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
[arXiv:1711.03555]
 GO
Tidal Disruption Events (TDEs) are processes where stars are torn apart by the strong gravitational force near to a massive or supermassive black hole. If a jet is launched in such a process, particle acceleration may take place in internal shocks. [...]
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