ZEU-EXP/AT

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2018-08-13
13:35
OpenAccess [PUBDB-2018-02922] Report/Journal Article
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Measurement of the iron spectrum in cosmic rays by VERITAS
[arXiv:1807.08010]
We present a new measurement of the energy spectrum of iron nuclei in cosmic rays from 20 TeV to 500 TeV. The measurement makes use of a template-based analysis method, which, for the first time, is applied to the energy reconstruction of iron-induced air showers recorded by the VERITAS array of imaging atmospheric Cherenkov telescopes [...]
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2018-08-13
13:24
OpenAccess [PUBDB-2018-02921] Journal Article
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The broad-band properties of the intermediate synchrotron peaked BL Lac S2 0109+22 from radio to VHE gamma-rays
The Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes observed S2 0109+22 in 2015 July during its flaring activity in high-energy gamma-rays observed by Fermi-Large Area Telescope. We analyse the MAGIC data to characterize the very high energy (VHE) gamma-ray emission of S2 0109+22, which belongs to the subclass of intermediate synchrotron peak (ISP) BL Lacertae (BL Lac) objects. [...]
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2018-08-01
14:54
arXiv [PUBDB-2018-02738] Report/Journal Article
; ; ; et al
VERITAS Observations of the BL Lac Object TXS 0506+056
[arXiv:1807.04607]
On 2017 September 22, the IceCube Neutrino Observatory reported the detection of the high-energy neutrino event IC 170922A, of potential astrophysical origin. It was soon determined that the neutrino direction was consistent with the location of the gamma-ray blazar TXS 0506+056 (3FGL J0509.4+0541), which was in an elevated gamma-ray emission state as measured by the Fermi satellite. [...]
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2018-08-01
14:50
arXiv [PUBDB-2018-02737] Report/Journal Article
; ; ; et al
HESS J1943+213: An Extreme Blazar Shining through the Galactic Plane
[arXiv:1806.04144]
HESS J1943+213 is a very high energy (VHE; >100 GeV) γ-ray source in the direction of the Galactic plane. Studies exploring the classification of the source are converging toward its identification as an extreme synchrotron BL Lac object. [...]
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2018-08-01
14:44
arXiv [PUBDB-2018-02736] Report/Journal Article
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Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
[arXiv:1807.08816]
Science 361(6398), eaat1378 - () [10.1126/science.aat1378]  GO
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2018-08-01
14:13
arXiv [PUBDB-2018-02734] Report/Journal Article
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A Very High Energy γ -Ray Survey toward the Cygnus Region of the Galaxy
[arXiv:1805.05989]
We present results from deep observations toward the Cygnus region using 300 hr of very high energy (VHE) γ-ray data taken with the VERITAS Cerenkov telescope array and over 7 yr of high-energy γ-ray data taken with the Fermi satellite at an energy above 1 GeV. As the brightest region of diffuse γ-ray emission in the northern sky, the Cygnus region provides a promising area to probe the origins of cosmic rays. [...]
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2018-07-18
10:23
arXiv [PUBDB-2018-02632] Report/Journal Article
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Understanding type Ia supernovae through their $U$-band spectra
[arXiv:1801.01834]
Context. Observations of type Ia supernovae (SNe Ia) can be used to derive accurate cosmological distances through empirical standardization techniques. [...]
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2018-07-18
10:17
OpenAccess [PUBDB-2018-02631] Journal Article
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Fermi -LAT Observations of LIGO/Virgo Event GW170817
We present the Fermi Large Area Telescope (LAT) observations of the binary neutron star merger event GW170817 and the associated short gamma-ray burst (SGRB) GRB 170817A detected by the Fermi Gamma-ray Burst Monitor. The LAT was entering the South Atlantic Anomaly at the time of the LIGO/Virgo trigger ($t_{GW}$) and therefore cannot place constraints on the existence of high-energy (E > 100 MeV) emission associated with the moment of binary coalescence. [...]
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2018-06-18
16:05
Embargoed OpenAccess [PUBDB-2018-02321] Journal Article
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Limits on the flux of tau neutrinos from 1 PeV to 3 EeV with the MAGIC telescopes
A search for tau neutrino induced showers with the MAGIC telescopes is presented. The MAGIC telescopes located at an altitude of 2200 m a.s.l. [...]
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2018-05-28
14:36
OpenAccess [PUBDB-2018-02121] Preprint/Report
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Extragalactic diffuse $\gamma$-rays from dark matter annihilation: revised prediction and full modelling uncertainties
[arXiv:1711.08323; DESY-17-218]
Recent high-energy data from Fermi-LAT on the diffuse γ-ray background have been used to set among the best constraints on annihilating TeV cold dark matter candidates. In order to assess the robustness of these limits, we revisit and update the calculation of the isotropic extragalactic γ-ray intensity from dark matter annihilation. [...]
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