ZEU-CTA

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2017-10-27
11:19
OpenAccess [PUBDB-2017-11584] Dissertation / PhD Thesis
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Measurement of spectral cut-offs of the active galatic nucleus MRK 421 with Veritas
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 153 pp. (2014) [10.18452/17124] = Humboldt Universität, Dissertation, 2014  GO
VERITAS, an array of four imaging atmospheric Cherenkov telescopes, is capable of measuring spectra of very-high-energy (E > 100 GeV) γ-rays with high precision. On the basis of these spectra, conclusions can be drawn about the acceleration mechanisms in γ-ray sources. [...]
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2017-10-27
11:12
OpenAccess [PUBDB-2017-11583] Dissertation / PhD Thesis
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Observations and modeling of the active galactic nucleus B2 1215+30 together with performance studies of the ground-based gamma-ray observatories VERITAS and CTA
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 157 pp. (2013) [10.18452/16844] = Humboldt Universität, Dissertation, 2013  GO
Ground-based gamma-ray astronomy, which provides access to photons in the TeV energy range, has been a rapidly developing discipline over the past decades. In this thesis, the performance of the current- and next-generation imaging atmospheric Cherenkov telescopes VERITAS and CTA is evaluated using Monte Carlo simulations. [...]
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2017-09-20
09:06
arXiv [PUBDB-2017-10909] Preprint/Report
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Science with the Cherenkov Telescope Array
[arXiv:1709.07997]
The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. [...]
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2017-09-20
08:55
OpenAccess [PUBDB-2017-10908] Report/Journal Article
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The second catalog of flaring gamma-ray sources from the Fermi All-sky Variability Analysis
[arXiv:1612.03165] ddc:520
We present the second catalog of flaring gamma-ray sources (2FAV) detected with the Fermi All-sky Variability Analysis (FAVA), a tool that blindly searches for transients over the entire sky observed by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. With respect to the first FAVA catalog, this catalog benefits from a larger data set, the latest LAT data release (Pass 8), as well as from an improved analysis that includes likelihood techniques for a more precise localization of the transients. [...]
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2017-08-03
14:24
OpenAccess [PUBDB-2017-08800] Conference Presentation

Astroparticle Physics and the Atmosphere
ARBRA 2017, ARBRA 2017, Meeting locationYerevan, Armenia, 23 May 2017 - 25 May 20172017-05-232017-05-25  GO
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2017-07-17
12:50
OpenAccess [PUBDB-2017-07767] Journal Article
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Monte Carlo performance studies for the site selection of the Cherenkov Telescope Array
ddc:540
The Cherenkov Telescope Array (CTA) represents the next generation of ground-based instruments for very-high-energy (VHE) gamma-ray astronomy, aimed at improving on the sensitivity of current-generation experiments by an order of magnitude and providing coverage over four decades of energy. The current CTA design consists of two arrays of tens of imaging atmospheric Cherenkov Telescopes, comprising Small, Medium and Large-Sized Telescopes, with one array located in each of the Northern and Southern Hemispheres. [...]
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2017-07-17
10:51
[PUBDB-2017-07734] Journal Article
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Modelling Jets, Tori and Flares in Pulsar Wind Nebulae
ddc:600
In this contribution we review the recent progress in the modelling of Pulsar Wind Nebulae (PWN). We start with a brief overview of the relevant physical processes in the magnetosphere, the wind-zone and the inflated nebula bubble. [...]
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2017-06-14
15:45
OpenAccess [PUBDB-2017-04984] Report/Journal Article
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Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7-3946
[arXiv:1704.04136] ddc:520
We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX J1713.7−3946, a young supernova remnant (SNR) and one of the brightest sources ever discovered in very high energy (VHE) gamma rays. Special attention is paid to exploring possible spatial (anti)correlations of gamma rays with emission at other wavelengths, in particular X-rays and CO/H i emission. [...]
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2017-03-03
11:10
Embargoed OpenAccess [PUBDB-2017-01279] Journal Article
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Improved $\gamma$/hadron separation for the detection of faint $\gamma$-ray sources using boosted decision trees
ddc:540
Imaging atmospheric Cherenkov telescopes record an enormous number of cosmic-ray background events. Suppressing these background events while retaining $\gamma$-rays is key to achieving good sensitivity to faint $\gamma$-ray sources. [...]
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2017-02-01
11:25
OpenAccess [PUBDB-2017-00824] Preprint/Report
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Dark matter substructure modelling and sensitivity of the Cherenkov Telescope Array to Galactic dark halos
[DESY-16-124; arXiv:1606.04898] ddc:530
Hierarchical structure formation leads to a clumpy distribution of dark matter in the Milky Way. These clumps are possible targets to search for dark matter annihilation with present and future γ-ray instruments. [...]
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