ZEU-EXP/AT

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2017-12-12
12:31
OpenAccess [PUBDB-2017-13325] Dissertation / PhD Thesis
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A catalog of variable high-energy gamma-ray sources and prospects for polarization measurement with the Fermi Large Area Telescope
Humboldt-Universität zu Berlin, 159 pp. (2017) [10.18452/18596] = Dissertation, Humboldt-Universität zu Berlin, 2017  GO
Das Fermi Large Area Telescope (LAT) ist ein satellitengestütztes Gammastrahlungs-Teleskop zur Messung von Gammastrahlung im Energiebereich zwischen ∼ 30 MeV und mehreren hundert GeV. Der Nachweis extraterrestrischer Gammastrahlung in diesem Energiebereich erlaubt Rückschlüsse auf die astrophysikalischen Quellen der Gammastrahlung und Beschleunigungsmechanismen kosmischer Strahlung mit Energien zwischen 1 GeV und ∼ 10 TeV. [...]
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2017-12-12
12:21
OpenAccess [PUBDB-2017-13323] Dissertation / PhD Thesis
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Prospects for Galactic dark matter searches with the Cherenkov Telescope Array (CTA)
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 290 p. (2017) [10.18452/17766] = Dissertation, Humboldt-Universität zu Berlin, 2017  GO
Die vorliegende Arbeit beschreibt einen semi-analytischen Ansatz zur Modellierung der Dichteverteilung von DM im Galaktischen Halo. Aus den verschiedenen Substrukturmodellen wird die γ-Strahlungsintensität, welche die Erde erreicht, berechnet. [...]
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2017-12-12
11:28
OpenAccess [PUBDB-2017-13314] Dissertation / PhD Thesis
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High-sensitivity analysis of the Cygnus region observed with VERITAS
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 193 pp. (2017) [10.18452/17750] = Dissertation, Humboldt-Universität zu Berlin, 2017  GO
Teilchenschauer können sowohl durch Photonen als auch durch geladene Teilchen erzeugt werden. Letztere kommen etwa 1000-mal häufiger vor als die durch Photonen erzeugten Teilchenschauer. [...]
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2017-12-12
11:04
OpenAccess [PUBDB-2017-13311] Dissertation / PhD Thesis
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Measurement of the iron spectrum in cosmic rays with the VERITAS experiment
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 191 pp. (2017) [10.18452/17691] = Dissertation, Humboldt-Universität zu Berlin, 2017  GO
Das Energiespektrum der kosmischen Strahlung bietet wichtige Hinweise auf ihren Ursprung und ihre Ausbreitung. Verschiedene Messtechniken müssen kombiniert werden, um den ganzen Energiebereich abdecken zu können: Direkte Messungen mit Teilchendetektoren bei niedrigen Energien sowie indirekte Messungen von Luftschauern bei hohen Energien. [...]
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2017-12-07
10:52
[PUBDB-2017-12822] Report/Journal Article
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Multiwavelength follow-up of a rare IceCube neutrino multiplet
[arXiv:1702.06131] ddc:520
On February 17, 2016, the IceCube real-time neutrino search identified, for the first time, three muon neutrino candidates arriving within 100 s of one another, consistent with coming from the same point in the sky. Such a triplet is expected once every 13.7 years as a random coincidence of background events [...]
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2017-11-22
16:49
Embargoed OpenAccess [PUBDB-2017-12239] Report/Journal Article
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A kilonova as the electromagnetic counterpart to a gravitational-wave source
[arXiv:1710.05841]
Nature 551, 75 - 91 (2017) [10.1038/nature24303]  GO
ddc:070
Gravitational waves were discovered with the detection of binary black-hole mergers1 and they should also be detectable from lower-mass neutron-star mergers. These are predicted to eject material rich in heavy radioactive isotopes that can power an electromagnetic signal. [...]
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2017-11-22
16:07
OpenAccess [PUBDB-2017-12237] Report/Journal Article
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Multi-messenger Observations of a Binary Neutron Star Merger
[LIGO-P1700294, VIR-0802A-17, arXiv:1710.05833] ddc:520
On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of $\sim$1.7 s with respect to the merger time [...]
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2017-11-22
15:24
OpenAccess [PUBDB-2017-12233] Report/Journal Article
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Discovery of Very-high-energy Emission from RGB J2243+203 and Derivation of Its Redshift Upper Limit
[arXiv:1709.05403] ddc:520
Very-high-energy (VHE; > 100 GeV) gamma-ray emission from the blazar RGB J2243+203 was discovered with the VERITAS Cherenkov telescope array, during the period between 2014 December 21 and 24. The VERITAS energy spectrum from this source can be fitted by a power law with a photon index of 4.6 ± 0.5, and a flux normalization at 0.15 TeV of $(6.3\pm 1.1)\times {10}^{-10}\,{\mathrm{cm}}^{-2}\,{{\rm{s}}}^{-1}\,{\mathrm{TeV}}^{-1}$. [...]
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2017-10-27
12:52
OpenAccess [PUBDB-2017-11591] Dissertation / PhD Thesis
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The energy spectrum of cosmic electrons measured with the MAGIC telescopes
Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 157 p. (2017) [10.18452/17698] = Humboldt Universität, Dissertation, 2017  GO
This thesis seeks to further explore the origin of cosmic electrons and positrons. The unexpected excess of very-high-energy electrons above 100 GeV has been established and is now considered proof of a new class of electron sources. [...]
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2017-10-20
13:44
OpenAccess [PUBDB-2017-11473] Report/Journal Article
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3FHL: The Third Catalog of Hard Fermi -LAT Sources
[arXiv:1702.00664] ddc:520
We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope (LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third Catalog of Hard Fermi-LAT Sources (3FHL), containing 1556 objects characterized in the 10 GeV–2 TeV energy range. [...]
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