Dr
Benjamin Zitzer
(McGill University)
04/08/2015, 16:00
DM-EX
Poster contribution
In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model, with weakly interacting massive particles (WIMPs) in the mass range from ~10 GeV to greater than 10 TeV. The self-annihilation or decay of WIMPs in astrophysical regions of high DM density can produce...
Jan Kunnen
(Vrije Universiteit Brussel)
04/08/2015, 16:00
DM-EX
Poster contribution
Many models predict new particles that have the properties of a Weakly Interacting Massive Particle (WIMP) and could explain the dark matter observed in the universe. Heavy celestial bodies, such as the Earth, could capture these WIMPs and accumulate them. Over time the WIMPs will self-annihilate and may produce standard model particles, including neutrinos. Large scale neutrino telescopes,...
Aya Ishihara
(Chiba University)
04/08/2015, 16:00
NU-EX
Poster contribution
Observations of extremely high energy neutrinos are expected to probe the origin of the highest energy cosmic rays with energies up to and above $10^{20}$eV. Cosmogenic neutrinos are associated with the interaction of those most energetic cosmic rays with cosmic microwave background photons (GZK effect) and considered a guaranteed astrophysical neutrino signal. The cosmogenic neutrinos have...
Mr
Klaus Wiebe
(Johannes Gutenberg-Universität Mainz)
04/08/2015, 16:00
DM-EX
Poster contribution
Dark matter particles can be trapped in massive celestial bodies, such as the Sun or the Earth. Their self-annihilations may produce standard model particles, including neutrinos of all flavors. Recent developments of reconstruction tools have allowed us to reconstruct electron and tau neutrino interactions with adequate angle and energy resolutions and to estimate the corresponding...
Mr
Benjamin Rotter
(University of Hawaii at Manoa)
04/08/2015, 16:00
DM-EX
Poster contribution
Regions of parameter space for a nearly forty year old hypothesis explaining dark matter with the existence of heavy composite quark objects remain unexplored. The Antarctic Impulsive Transient Antenna (ANITA) experiment, a NASA-sponsored long duration balloon payload, is in a unique position to test this exotic dark matter candidate by exploiting the sensitivity of an on-board monitoring...
Mr
Christoph Toennis
(Ific)
04/08/2015, 16:00
DM-EX
Poster contribution
In this work we describe the search for Secluded Dark Matter (SDM) annihilation from the Sun with ANTARES. SDM is a special scenario where DM, which would gravitationally accumulate in astrophysical objects like the Sun, is annihilated into a pair of non-Standard Model mediators, which subsequently decay into SM particles. It was suggested to explain some experimental observations, such as the...
Dr
Brenda Dingus
(Los Alamos National Laboratory)
04/08/2015, 16:00
DM-EX
Poster contribution
In order to observe annihilation and decay of dark matter, several types of potential sources should be considered. Some sources, such as dwarf galaxies, are expected to have very low astrophysical backgrounds but fairly small dark matter densities. Other sources, like the Galactic center, are expected to have larger densities of dark matter but also have more complicated backgrounds from...
Ms
Gwenhaël de Wasseige
(Vrije Universiteit Brussel (VUB))
04/08/2015, 16:00
NU-EX
Poster contribution
Since the end of the eighties and in response to an increase in the total neutrino flux in the Homestake experiment in coincidence with a solar flare, solar neutrino detectors have searched for solar flare signals. Neutrinos from the decay of mesons, which are themselves produced in collisions of accelerated protons with the solar atmosphere, would provide a novel window on the underlying...
Dr
Carl Gilbert Pfendner
(Ohio State University (USA))
04/08/2015, 16:00
NU-EX
Poster contribution
The Askaryan Radio Array (ARA) is an ultra-high energy (UHE) cosmic neutrino detector located at the South Pole. The cosmic ray flux cut off above primary energies of $10^{19.5}$ eV leads us to expect a UHE neutrino flux due to the Greisen-Zatsepin-Kuzmin (GZK) effect. The detection of these UHE cosmic neutrinos will add to the understanding of the sources and physics of UHE cosmic rays. The...
Aurore Mathieu
04/08/2015, 16:00
NU-EX
Poster contribution
The ANTARES telescope is well suited to detect neutrinos produced in astrophysical transient
sources as it can observe a full hemisphere of the sky with a high duty cycle. Potential
neutrino sources are gamma-ray bursts, core-collapse supernovae and flaring active galactic
nuclei. To enhance the sensitivity of ANTARES to such sources, a detection method based on
follow-up observations from...
Prof.
Philip Von Doetinchem
(University of Hawaii at Manoa)
04/08/2015, 16:00
DM-EX
Poster contribution
The GAPS experiment is foreseen to carry out a dark matter search by measuring low-energy cosmic ray antideuterons and antiprotons with a novel detection approach. It will provide a new avenue to access a wide range of different dark matter models and masses from about 10GeV to 1TeV.
The theoretically predicted antideuteron flux resulting from secondary interactions of primary cosmic rays...
Jacek Szabelski
(National Centre for Nuclear Research)
04/08/2015, 16:00
DM-EX
Poster contribution
In low background underground laboratories neutrons create important background in experiments searching for very rare events. These neutrons might origin from incoherent radioactive decays or large number of neutrons might be produced in coherent way in muon induced cascades. Neutrons produced in muon cascades might have significantly larger energies than those from radioactive sources. We...
Daniel Nieto Castano
(Columbia University)
04/08/2015, 16:00
DM-EX
Poster contribution
The distribution of dark matter in the Galaxy, according to state-of-the-art simulations, shows not only a smooth halo component but also a rich substructure where a hierarchy of dark matter subhalos of different masses is found. We present a search for potential dark matter subhalos in our Galaxy exploiting the high (HE, 100 MeV -- 100 GeV) and very-high-energy (VHE, >100 GeV) gamma-ray...
Christoph Tönnis
(Universitat de Valencia)
04/08/2015, 16:00
NU-EX
Poster contribution
The ANTARES neutrino telescope is a water Cherenkov detector and currently the largest operating neutrino telescope in the Northern Hemisphere. One of the main scientific goals of ANTARES is the indirect search for dark matter, as the Weakly Interacting Massive Particle (WIMP). WIMPs could scatter on normal matter and therefore be gravitational bound in massive astronomical objects like the...
Veronique Van Elewyck
(APC, Universite Paris Diderot)
04/08/2015, 16:00
NU-EX
Poster contribution
Cataclysmic cosmic events can be plausible sources of both gravitational waves (GW) and high energy neutrinos (HEN), alternative cosmic messengers carrying information from the innermost regions of the astrophysical engines. Possible sources include long and short gamma-ray bursts (GRBs) but also low-luminosity or choked GRBs, with no or low gamma-ray emissions.
The ANTARES Neutrino...
Dominik Stransky
04/08/2015, 16:00
NU-EX
Poster contribution
KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ARCA detector will be devoted to the observation of high-energy cosmic neutrinos both in diffuse and point source mode. A major objective of KM3NeT/ARCA is to establish all-flavour neutrino astronomy. The observation of cosmic neutrinos has been...
Javier Barrios Martí
(IFIC - CSIC)
04/08/2015, 16:00
NU-EX
Poster contribution
KM3NeT is a large research infrastructure that will consist of a network of deep-sea neutrino telescopes in the Mediterranean Sea, of which the ARCA detector installed in the CapoPassero site (Italy) is optimised for studying high-energy neutrinos of cosmic origin. Thanks to its geographical location on the Northern hemisphere, KM3NeT can observe most of the Galactic Plane, including the...
Javier Barrios Martí
(IFIC - CSIC)
04/08/2015, 16:00
NU-EX
Poster contribution
Motivated by an accumulation of events close to the Galactic center in the High Energy Starting Events (HESE) reported by the IceCube Collaboration, a search for point-like sources up to an extension of a few degrees in a wide region around the Galactic center has been performed using the ANTARES neutrino telescope. Different spectral indexes for the energy spectra of the sources, in addition...
Dr
Matthew Wood
(SLAC)
04/08/2015, 16:00
DM-EX
Poster contribution
The existence of a non-baryonic, neutral and weakly-interacting dark matter component in the Universe is supported by an overwhelming body of experimental evidence. A promising way to try and identify the dark matter particle, and to measure its properties, is to search for the gamma rays produced by annihilation and/or decay in dark matter overdensities in the local Universe. Gamma-ray...
David Altmann
(DESY)
04/08/2015, 16:00
NU-EX
Poster contribution
Many Galactic sources of gamma rays, like supernova remnants, are suspected to also produce high-energy neutrinos with a typical high-energy cutoff below 100 TeV. For the IceCube Neutrino Observatory, located at the South Pole, this is challenging due to the very large background of atmospheric muons at these energies in the southern hemisphere which covers the inner part of the Galactic plane...
Claudio Kopper
(University of Alberta),
Naoko Kurahashi Neilson
(Drexel University)
04/08/2015, 16:00
NU-EX
Poster contribution
The spectrum of cosmic rays includes the most energetic particles ever observed. The mechanism of their acceleration and their sources are, however, still mostly unknown. Observing astrophysical neutrinos can help solve this problem. Because neutrinos are produced in hadronic interactions and are neither absorbed nor deflected, they will point directly back to their source. This contribution...
Jan Luenemann
(Vrije Universiteit Brussel)
04/08/2015, 16:00
DM-EX
Poster contribution
In high energy physics many background dominated analyses suffer from limited statistics in simulation: With increasing efficiency of the event selection the simulated samples are reduced so that in many cases the event number at final analysis level is very low. Due to limited computational resources the production of more simulation is not always feasible. In this cases it is helpful to...
Mr
Volker Baum
(Johannes Gutenberg-Universität Mainz)
04/08/2015, 16:00
NU-EX
Poster contribution
With a lattice of 5160 photomultiplier tubes, IceCube monitors one cubic kilometer of deep Antarctic ice in order to detect neutrinos via the Cherenkov photons emitted by charged secondaries arising from their interactions in matter. Due to subfreezing ice temperatures, the photomultipliers’ dark noise rates are particularly low. Therefore a collective rate enhancement introduced by...
Steffen Hallmann
(ECAP - Univ. Erlangen)
04/08/2015, 16:00
NU-EX
Poster contribution
The ANTARES neutrino telescope, taking data in its final configuration since 2008 at the bottom of the Mediterranean Sea, has since then contributed to the seaches for high-energy neutrino sources. ANTARES has also been able to set constraints on the cosmic neutrino flux.
The ANTARES sensitivity for a diffuse neutrino flux with six years of data taking is close to the level of the cosmic...
Moritz Hütten
(DESY and Humboldt-Universität Berlin)
04/08/2015, 16:00
DM-EX
Poster contribution
Weakly interacting, massive dark matter particles are expected to self-annihilate or decay into high-energy photons, which thereby establish the possibility for indirect detection by gamma-ray telescopes. For probing the dark matter annihilation products, accurate knowledge of the dark matter density distributions is crucial. However, major uncertainties exist in the density profiles of our...
james pepper
(IceCube)
04/08/2015, 16:00
NU-EX
Poster contribution
Most searches for Dark Matter primarily focus on the WIMP paradigm, which predicts dark matter masses in the GeV - 10 TeV range. However, these relatively low energy searches continue to produce null results, possibly suggesting that dark matter is something other than WIMPs. Gravitinos, on the other hand, can satisfy the cosmological constraints on dark matter, and decay with a lifetime...
Gabriela Emilia Pavalas
(Institute for Space Sciences)
04/08/2015, 16:00
NU-EX
Poster contribution
Magnetic monopoles are hypothetical particles predicted to be created in the early Universe in the framework of Grand Unified Theories (GUTs). The signature of the passage of magnetic monopoles in a Cherenkov telescope like ANTARES (Astronomy with a Neutrino Telescope and Abyss environmental RESearch) is expected to be evident and unambiguous, because of the large amount of light emitted...
Elisa Pinat
04/08/2015, 16:00
NU-EX
Poster contribution
The IceCube Neutrino Observatory, a cubic kilometer telescope located in the Antarctic ice, offers unique opportunities to study high energy neutrino emission from galactic and extragalactic sources. The Galactic plane is the brightest source of gamma rays in the sky, and it is believed to be also one of the brightest very high energy neutrino sources. The first discovery of an astrophysical...
Sandro Kopper
(BU Wuppertal)
04/08/2015, 16:00
NU-EX
Poster contribution
Physics theories beyond the Standard Model like Supersymmetry
and models with extra dimensions often invoke $\mathbb{Z}_2$-symmetries in order to avoid new couplings that lead to unobserved new physics like unnaturally fast proton decay. This gives rise to the possibility of heavy, new particles being produced in pairs with the lightest of them being (meta-) stable.
Thus, under favorable...
Chiara Perrina
("La Sapienza" University of Roma & INFN)
04/08/2015, 16:00
NU-EX
Poster contribution
Installed in the Mediterranean Sea, at a depth of $\sim 2.5$ km, ANTARES is the largest undersea neutrino telescope currently operating. Point source searches with neutrino telescopes are normally limited to a fraction of the sky, due to the selection of events where the direction of the neutrino candidate has been reconstructed as coming from below the horizon, usually referred to as...
Rodrigo Gracia
(APC)
04/08/2015, 16:00
NU-EX
Poster contribution
We use a two point correlation analysis to look for inhomogeneities in the arrival directions of
the high energy muon neutrino candidates detected by the ANTARES neutrino telescope. This
approach is complementary to a point source likelihood-based search, which is mainly sensitive
to one bright point like source and not to collective effects. We present the results of a search
based on...
Ms
Meike De With
(Deutsches Elektronen-Synchrotron (DE))
04/08/2015, 16:00
DM-EX
Poster contribution
In many models, the self-annihilation of dark matter particles will create neutrinos which can be detected on Earth. An excess flux of these neutrinos is expected from regions of increased dark matter density, like (dwarf) galaxies and galaxy clusters. The IceCube neutrino observatory, a cubic-kilometer neutrino detector at the South Pole, is capable of detecting neutrinos down to energies of...
Martijn Jongen
(Nikhef)
04/08/2015, 16:00
NU-EX
Poster contribution
KM3NeT is the next generation underwater neutrino telescope being installed in the Mediterranean Sea. Its low-energy branch KM3NeT/ORCA will measure neutrinos in the energy range of several GeV, aiming to resolve the long-standing question whether the neutrino mass hierarchy is normal or inverted by measuring matter-induced oscillation effects in atmospheric neutrinos.
In the presentation,...
Jannik Hofestädt
(ECAP)
04/08/2015, 16:00
NU-EX
Poster contribution
Existing large-volume neutrino telescopes such as ANTARES and IceCube, as well as the future KM3NeT/ARCA, investigate neutrinos at characteristic particle energies of 10TeV, whereas KM3NeT/ORCA and PINGU will operate around 10GeV to determine the neutrino mass hierarchy using atmospheric neutrinos propagated through the Earth. In this energy regime, intrinsic fluctuations in particle...
Mr
Mathis Börner
(TU Dortmund)
04/08/2015, 16:00
NU-EX
Poster contribution
IceCube is a cubic kilometer neutrino telescope located at the geographic South Pole. Although primarily designed for the detection of cosmic neutrinos, the detector is well suited for measurements of the atmospheric muon neutrino energy spectrum. We present the first measurement of the atmospheric neutrino energy spectrum obtained in its full 86-string configuration. The analysis was carried...
Koichi Ichimura
(University of Tokyo)
04/08/2015, 16:00
DM-EX
Poster contribution
XMASS, the Kamioka Dark Matter direct detection experiment with an eye to future multi purpose detector, is planning to improve its Dark Matter sensitivity by increasing the amount of liquid xenon in its inner detector volume from the current 832kg to 5 metric tons. Challenges identified with the current detector informed the design of this upgrade. In this presentation, we present the new...
