27-31 August 2018
LVH, Luisenstraße 58, 10117 Berlin
Europe/Berlin timezone
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Neutrino Astronomy

Place

Location: LVH, Luisenstraße 58, 10117 Berlin
Address: LANGENBECK VIRCHOW HAUS Luisenstraße 58, 10117 Berlin
Date: from 27 Aug 14:00 to 30 Aug 17:55

Description

Chair 1: Fabrizio Tavecchio | Chair 2: Andrea Palladino | Chair 3: Francesco Villante | Chair 4: Joshua Wood | Chair 5: Summer Blot | Chair 6: Markus Ahlers

Conveners

  • 27 Aug 14:00 - 3:50 PM 1
    • Dr. Palladino, Andrea (DESY)
    • Kopper, Claudio (University of Alberta)
    • Dr. Heijboer, Aart (NIKHEF)
  • 27 Aug 16:15 - 6:05 PM 2
    • Dr. Palladino, Andrea (DESY)
    • Kopper, Claudio (University of Alberta)
    • Dr. Heijboer, Aart (NIKHEF)
  • 28 Aug 16:45 - 6:40 PM 3
    • Dr. Palladino, Andrea (DESY)
    • Kopper, Claudio (University of Alberta)
    • Dr. Heijboer, Aart (NIKHEF)
  • 29 Aug 14:00 - 3:45 PM 4
    • Dr. Palladino, Andrea (DESY)
    • Kopper, Claudio (University of Alberta)
    • Dr. Heijboer, Aart (NIKHEF)
  • 30 Aug 16:15 - 5:55 PM 5
    • Dr. Palladino, Andrea (DESY)
    • Kopper, Claudio (University of Alberta)
    • Dr. Heijboer, Aart (NIKHEF)

Timetable | Contribution List

Displaying 33 contributions out of 33
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
A detailed multi-messenger study of the high-energy emission from the Galactic plane is possible nowadays thanks to the observations provided by gamma and neutrino telescopes. We show the potential of this approach by using the total gamma flux from the galactic plane measured by HESS at 1TeV and in the longitude range −75° < l < 60°. We compare the HESS observational data with expectations fo ... More
Presented by Prof. Francesco VILLANTE on 30/8/2018 at 14:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Atmospheric neutrinos are of interest as a beam for the study of neutrino properties and as a foreground in the search for astrophysical neutrinos. An accurate understanding of their flux is important for both. Uncertainties in the flux of atmospheric neutrinos arise from composition and spectrum of the primary cosmic radiation and from imperfect knowledge of hadronic interactions. Both aspects ... More
Presented by Thomas GAISSER on 30/8/2018 at 15:25
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Motivated by neutrino astronomy, we consider a plane wave of coupled and massive flavours, scattered by a static black hole, and describe analytically and numerically the corresponding oscillation probability in the surrounding space. Both the interpretation as particles travelling along geodesics and as scattered waves are studied, and consistently show a non-trivial and potentially long range ... More
Presented by Dr. Jean ALEXANDRE on 29/8/2018 at 13:10
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
High-energy astrophysical neutrinos, with TeV--PeV energies, are acutely sensitive to the existence of potential new flavor-dependent interactions with the electrons around them. For the first time, we probe this possibility by looking for deviations in the flavor composition of the astrophysical neutrinos seen by IceCube. At these energies, the relative contribution of standard oscillations is w ... More
Presented by Dr. Mauricio BUSTAMANTE on 29/8/2018 at 13:25
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
We have previously argued that the probability for the detection of individual neutrinos from individual blazars is expected to scale with the long-term fluence rather than short flares of high gamma-ray flux. Recently, the extremely high energy (EHE) muon neutrino event IceCube-170922A was found to coincide with increased gamma-ray emission from the blazar TXS 0506+056. We use short- and long-ter ... More
Presented by Mr. Michael KRETER on 27/8/2018 at 15:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
On September 22, 2017, the IceCube Neutrino Observatory has observed for the first time ever an extremely high-energy neutrino IceCube-170922 in spatial and temporal coincidence with a gamma-ray flaring blazar, TXS 0506+056, observed with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Following the original IceCube alert, the source has been observed by several telescopes ... More
Presented by Anna FRANCKOWIAK on 27/8/2018 at 12:20
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Various observations are revealing the widespread occurrence of fast and powerful winds in active galactic nuclei (AGNs) that are distinct from relativistic jets, likely launched from accretion disks and interacting strongly with the gas of their host galaxies. During the interaction, strong shocks are expected to form that can accelerate nonthermal particles to high energies. Such winds have been ... More
Presented by Dr. Ruoyu LIU on 27/8/2018 at 13:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The IceCube neutrino observatory has firmly established the existence of an astrophysical high-energy neutrino component. This discovery was made using the high energy starting events sample (HESE), which uses a veto to significantly reduce atmospheric background. In this talk I will present the latest astrophysical neutrino flux measurement using seven years of HESE. This latest iteration of the ... More
Presented by Mr. Austin SCHNEIDER on 27/8/2018 at 14:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
On September 22, 2017, the IceCube Neutrino Observatory has observed for the first time ever an extremely high-energy neutrino IceCube-170922 spatially and temporally consistent with a  gamma-ray flaring blazar, TXS 0506+056. The region around the event is, however, crowded with several other thermal and non-thermal sources. In order to get a clear picture of the possible neutrino counterpart ... More
Presented by Mr. Theo GLAUCH on 27/8/2018 at 13:05
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Progress in finding the origin of ultra-high-energy cosmic rays (UHECRs) will come from discovering the secondary UHE neutrinos produced in UHECR interactions. Yet, the flux of UHE neutrinos may lie beyond the reach of existing detectors and their possible upgrades. GRAND is a planned large-scale UHE observatory designed to discover UHE neutrinos even if their flux is low. It will do so by measuri ... More
Presented by Mauricio BUSTAMANTE on 28/8/2018 at 15:20
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Blazars are active galactic nuclei which have their relativistic particle jet pointing towards Earth and have been observed to emit gamma rays to very high energies. They are also candidates for the yet-unknown accelerators of ultra-high-energy cosmic rays. In such a scenario, their gamma-ray emission might be associated with neutrinos produced by hadronic interactions in the jet. Correlating the ... More
Presented by Christoph RAAB on 27/8/2018 at 15:50
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
We present a search for neutrino emission from Galactic TeV gamma-ray sources detected by the HAWC Observatory. HAWC serves as an excellent instrument to complement IceCube with its energy range extending to very high energies where we expect neutrinos correlated with the gamma-rays observed by HAWC, assuming that the highest energy photons originate from the decay of pions. Using 8 years of IceCu ... More
Presented by Joshua WOOD on 30/8/2018 at 14:55
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Since its discovery of the astrophysical neutrino flux, the IceCube Neutrino Observatory has continued to provide invaluable knowledge about both potential neutrino sources and neutrino properties at the GeV-PeV scale through its detection of neutrino interactions via Cherenkov radiation in the deep South Pole ice. In addition, IceCube is a strong partner in the field of multi-messenger ... More
Presented by Summer BLOT on 27/8/2018 at 14:15
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
On September 22nd 2017, the IceCube Neutrino Observatory reported a muon track from a neutrino with a very good positional accuracy. The alert triggered a number of astronomical follow-up campaigns, and the Fermi gamma-ray telescope found as counterpart an object named TXS0506+056 in a very bright, flaring state; this observation may be the first direct evidence for an extragalactic source of very ... More
Presented by Dr. Shan GAO on 27/8/2018 at 13:20
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Recently it has been reported by the IceCube detector, which is installed under the thick Antarctic ice, evidence of the existence of a high-energy flow of cosmic neutrinos. Today, the scientific community requires that a neutrinos telescope located in the northern hemisphere verify and complete the results of IceCube, so as to allow observation of high-energy neutrinos across the sky. The Medit ... More
Presented by Pasquale MIGLIOZZI on 29/8/2018 at 12:00
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
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. in the Canary Island of La Palma, can point towards the horizon or a few degrees below, across an azimuthal range of about 80 degrees. This allows to search for a signature of particle showers induced by earth-skimming cosmic tau neutrinos in the PeV to EeV ... More
Presented by Dariusz GORA on 29/8/2018 at 12:40
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Although designed to observe neutrinos from astrophysical sources at TeV-PeV energies, IceCube and its DeepCore in-fill array also observe large numbers of atmospheric neutrinos in the 5-50 GeV range, permitting measurements of the “atmospheric” neutrino mixing parameters in a higher energy range complementary to measurements from long-baseline neutrino beam experiments. As these energies are ... More
Presented by Tyce DEYOUNG on 30/8/2018 at 15:40
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Baikal-GVD is a next generation, cubic-kilometer scale neutrino telescope which has been constructed since 2015 in the largest and deepest freshwater lake in the world, Lake Baikal. The detector itself is built from independent multi-megaton sub-arrays called clusters whose centers are 300 meters away. Every cluster consists of 8 strings each carrying 36 Optical Modules (OMs) vertically spaced by ... More
Presented by Lukáš FAJT on 30/8/2018 at 14:15
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The IceCube Neutrino Observatory at the South Pole detects Cherenkov light from charged particles produced in neutrino interactions. At the highest energies, the neutrino flux is of cosmic origin, but its astrophysical sources are yet unknown. A measurement of the flavor ratio on Earth can provide important constraints on sources and production mechanisms. In this talk we present the measurement o ... More
Presented by Juliana STACHURSKA on 27/8/2018 at 14:50
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Recently, the IceCube Neutrino Observatory has alerted the astrophysical community about the detection of a very energetic neutrino event (called IceCube-170922A). Upon this alert, the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope reported enhanced gamma-ray emission from BL Lac object TXS 0506+05, compatible with the direction of IceCube-170922A. The fact that this ... More
Presented by Prof. Markus BOETTCHER on 27/8/2018 at 12:50
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
As the IceCube has steadily collected data over the last several years, certain tensions have emerged between observations on one hand and fits obtained to these observations when assuming a single power-law diffuse astrophysical flux of neutrinos on the other; and between fits obtained using different kinds of datasets (HESE vs through-going muons). We analyse whether these tensions may be mitiga ... More
Presented by Dr. Atri BHATTACHARYA on 30/8/2018 at 15:10
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
At the highest energies the cosmic neutrino flux drops rapidly and an even larger detection volume than the cubic kilometer of ice currently probed by the IceCube experiment is needed. Due to its long attenuation length, the radio signal provides the ideal means to cover such large volumes. Nevertheless, the direct radio emission from a neutrino induced particle cascade becomes detectable around E ... More
Presented by Dr. Krijn DE VRIES on 28/8/2018 at 15:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Ultra-High Energy (UHE) neutrino (nu) detection via the Askaryan effect in Antarctic ice is a long-time goal of the field of astro-particle physics. The Askaryan effect occurs when a UHE cascade radiates electromagnetic waves. For UHE-nu interactions, the Askaryan signal is expected to be in the radio-frequency (RF) bandwidth, and Antartic ice is a suitable detection medium for such signals. Re ... More
Presented by Dr. Jordan HANSON
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The IceCube Neutrino Observatory studies a wide range of phenomena including neutrino astronomy, dark matter searches, neutrino oscillations, and cosmic ray physics using a cubic kilometer of instrumented ice at the South Pole. Recently, IceCube reported evidence for the first identified source of the high energy astrophysical neutrino flux. This represents a major milestone towards understanding ... More
Presented by Joshua WOOD on 27/8/2018 at 12:00
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The discovery of a cosmic neutrinos diffuse flux by IceCube together with the recent observation of gravitational waves have widened our spectrum of probes needed for multi-messenger astronomy. However, the origin of the faint flux of high-energy astrophysical neutrinos is still unknown. The ANTARES neutrino telescope is currently the detector with the largest sensitivity located in the Northern h ... More
Presented by Dr. Simone BIAGI on 28/8/2018 at 14:45
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Located at the South Pole, the IceCube Neutrino Observatory is the world largest neutrino telescope, instrumenting one cubic kilometre of Antarctic ice at a depth between 1450m to 2450m. In 2013 IceCube reported the first observations of a diffuse astrophysical high-energy neutrino flux. Although the IceCube Collaboration has identified more than 100 high energy neutrino events, the origin of t ... More
Presented by Matthias HUBER on 28/8/2018 at 16:05
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
A high-energy neutrino event detected by IceCube on 22 September 2017 was coincident in direction and time with a gamma-ray flare from the blazar TXS 0506+056. Prompted by this encounter, 10 years of IceCube neutrino data were searched for additional, independent neutrino emission from the position of the blazar. Two methods were applied to search for an excess of neutrino events in the direction ... More
Presented by Dr. Imen AL SAMARAI on 27/8/2018 at 12:35
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The IceCube neutrino observatory has detected a flux of extragalactic neutrinos. However, the origin of the neutrinos is still unknown. Among the possible candidates are Gamma-Ray Bursts (GRBs), Core-Collapse Supernovae (SNe), Active Galactic Nuclei (AGN) and Tidal Disruption Events (TDEs) - all are accompanied by a characteristic optical counterpart. Therefore, the goal is to identify the neutrin ... More
Presented by Dr. Ludwig RAUCH on 29/8/2018 at 12:55
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
ANITA (the ANtarctic Impulsive Transient Antenna) is a long-duration balloon borne radio interferometer designed to search for ultra-high energy (> 10^18 eV) cosmogenic neutrinos. Over a few weeks it flies at an altitude of 37km, scanning the Antarctic ice for Askaryan radio emission created by neutrino interactions. To date four science flights have been completed, with a fifth flight proposed ... More
Presented by Ben STRUTT on 28/8/2018 at 15:05
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Despite intense inquiry, the sources at the origin of the high-energy neutrinos revealed by IceCube are still unknown. The potential correlation of an IceCube event with a flaring gamma-ray source has recently focused the attention on BL Lac objects, active galactic nuclei with a relativistic jet pointing to the Earth. Since the nuclei of these sources lack bright thermal components, it is ge ... More
Presented by Fabrizio TAVECCHIO on 29/8/2018 at 12:20
Type: Talk Session: Neutrino Astronomy
Track: Extragalactic
In September 2017, the IceCube neutrino observatory revealed an event designated IceCube-170922A with a high probability of being of astrophysical origin. The event was detected in spatial coincidence with the BL Lac object TXS 0506+056 during a period of enhanced GeV gamma-ray activity. We monitored the object in the very-high-energy (VHE; E>100 GeV) band with the MAGIC telescopes, clearly dete ... More
Presented by Elisa BERNARDINI on 27/8/2018 at 15:05
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
The origin of the astrophysical neutrinos detected by IceCube, whose energies extend up to a few PeV, is still unknown. In this work we investigate blazars (a class of relativistic jets from the core of active galaxies) as sources of the diffuse astrophysical neutrino flux. For a blazar of a given luminosity, we calculate the emitted neutrino spectrum using a recently developed numeric radiation ... More
Presented by Mr. Xavier RODRIGUES on 27/8/2018 at 15:20
Type: Talk Session: Neutrino Astronomy
Track: Neutrinos
Massive stars with strong stellar winds are expected to be progenitors of the long gamma-ray burtsts (GRBs). The winds of these stars are expected to form a wind cavities within the dense clusters. We consider a scenario in which protons, accelerated within the jet of GRB, escape from the GRB jet to the wind cavity. They are transported with the massive star wind to the dense open cluster where t ... More
Presented by Prof. Wlodek BEDNAREK on 28/8/2018 at 15:50
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