22/05/2013, 09:10
Prof. Egidio Longo, Director of the Physics Department
Ivan De Mitri
(University of Salento and INFN - Lecce, Italy)
22/05/2013, 09:20
Cosmic ray physics in the 10^12-10^15eV primary energy range is among the main scientific goals of the ARGO-YBJ experiment. The detector, located in the Cosmic Ray Observatory of Yangbajing (Tibet, China) at 4300m a.s.l., is a full coverage Extensive Air Shower array consisting of a carpet of Resistive Plate Chambers (RPC) of about 7000m2. The apparatus layout, performance and location offer a...
Andrea Chiavassa
(Universita` degli Studi di Torino)
22/05/2013, 09:40
The KASCADE-Grande experiment operated in KIT from January 2004 to November 2012, measuring EAS generated by primary cosmic rays in the 10^16-10^18 eV energy range. The experiment detected, for each single event and with a high resolution, the total number of charged particles (Nch) and of muons (Nm).
In this talk I will present the updated results about:
- the measurement of the all...
Denise Boncioli
(INFN Laboratori Nazionali del Gran Sasso)
22/05/2013, 10:20
The Pierre Auger Observatory in Argentina is the largest cosmic ray detector array ever built.
Although the construction was completed in 2008, the Observatory has been taking data continuously since January 2004.
Its main goal is to measure ultra high energy cosmic rays (UHECRs, energy above $10^{18}$ eV) with unprecedented statistics and precision.
Measurements of the energy spectrum,...
Prof.
Petr Tinyakov
(ULB (Université Libre de Bruxelles))
22/05/2013, 10:40
The Telescope Array ultra-high energy cosmic ray detector, situated in Utah, USA, is taking data since March 2008. We will present the latest results of the spectrum, composition and anisotropy studies based on the 4 years of the Telescope Array data.
Prof.
Carlos Munoz
(Universidad Autonoma de Madrid UAM & Instituto de Física Teorica IFT)
22/05/2013, 11:30
Direct and indirect dark matter searches will be reviewed. Several interesting theoretical models of annihilating and decaying dark matter will be discussed. For annihilating dark matter, the possibility of obtaining stringent model-independent constraints from Fermi-LAT inner Galaxy measurements, will also be analyzed.
Dr
Alessio Tamburro
(University of Delaware)
22/05/2013, 11:50
Analysis of cosmic-ray surface data collected with the IceTop array of Cherenkov detectors at the South Pole gives an accurate measurement
of the cosmic-ray spectrum and its features in the "knee" region and at higher energies up to about 1 EeV. IceTop is part of the IceCube Observatory, a cubic kilometer Cherenkov detector deployed under IceTop in the polar ice sheet, which reconstructs...
Dr
Todor Stanev
(University of Delaware)
22/05/2013, 12:15
We discuss the energy spectrum of the cosmic rays above 100 GeV that have been derived from measurements of balloon and satelite experiments and from air shower detection. If one uses Peters cycle to describe the spectrum it is difficult to describe with two single power laws before and after the knee. A much better fit is obtained by using more complicated shape.
Oscar Blanch Bigas
(IFAE)
22/05/2013, 12:35
The MAGIC telescopes for gamma-ray astronomy in the very-high energy range are located on the Canary island of La Palma. They are two imaging atmospheric Cherenkov telescopes with 17m diameter composite mirror dishes and ultra-fast electronics. Reaching an energy threshold as low as 50 GeV for observations at low zenith angles, they can close the energy gap between satellite-bourne and...
Dr
Alessandro cuoco
(University of Torino)
22/05/2013, 14:00
I will discuss constraints on dark matter annihilating or decaying in the Milky Way Halo from observations of the diffuse gamma-ray emission with the Fermi Large Area Telescope.
A novel approach is developed to take into account the astrophysical foregrounds, with the use of the GALPROP code to model the foreground astrophysical diffuse emission and a profile likelihood formalism to...
Dr
Fiorenza Donato
(Torino University)
22/05/2013, 14:20
We calculate the diffuse gamma-ray emission due to the population of misaligned AGN (MAGN) unresolved by the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. We demonstrate that the MAGN can contribute from 10% up to nearly the entire measured Isotropic Gamma-Ray Background (IGRB), with a theoretical uncertainty on the flux of almost an order of magnitude. We also evaluate...
Dr
Carlotta Pittori
(INAF-OAR/ASDC)
22/05/2013, 14:30
AGILE is a Scientific Mission of the Italian Space Agency (ASI) with INFN, INAF e CIFS participation devoted to gamma-ray astrophysics.
The satellite is in orbit since April 23rd, 2007. Thanks to its sky monitoring capability and fast ground segment alert system, AGILE is producing several important scientific results, among which the unexpected discovery of strong and rapid gamma-ray flares...
Dr
Julien Bolmont
(LPNHE Paris)
22/05/2013, 15:00
Because they are bright and distant, Gamma-ray Bursts (GRBs) have been used for more than a decade to test propagation of photons and to constrain relevant Quantum Gravity (QG) models in which the velocity of photons in vacuum can depend on their energy. With its unprecedented sensitivity and energy coverage, the Fermi satellite has provided the most constraining results on the QG energy scale...
Mrs
Martina Cardillo
(INAF-IAPS & Università di Roma Tor Vergata)
22/05/2013, 15:15
The SNRW44 plays a crucial role in our understanding of the Cosmic Ray origin.
Recently, AGILE and Fermi-LAT data have determined, for the first time in a supernova remnant, that the gamma-ray emission from W44 can be attributed to accelerated proton/ions.
We present new W44 AGILE data and compare them with the recent Fermi data, in the light of new NANTEN2 telescope CO results. Our analysis...
Mr
German Arturo Gomez Vargas
(Universidad Autonoma de Madrid - IFT UAM/CSIC)
22/05/2013, 15:20
The detailed origin of the diffuse gamma-ray background is still unknown. However, the contribution of unresolved sources is expected to induce small-scale anisotropies in this emission, which may provide a way to identify and constrain the properties of its contributors. Recent studies have predicted the contributions to the angular power spectrum (APS) from extragalactic and galactic dark...
Dr
Federico Fraschetti
(University of Arizona)
22/05/2013, 15:30
Supernova Remnant (SNR) shocks are considered the main source of galactic cosmic-rays at least up to the knee of the cosmic-ray spectrum, and possibly further. From recent high-energy observations of SNRs a magnetic field at the shock far exceeding the theoretically predicted shock-compressed field has been inferred. Theoretical work in the last decade has linked particles accelerated at the...
Dr
Massimiliano Lattanzi
(Università di Ferrara)
22/05/2013, 15:40
In my talk I will explore the possibility that the dark matter is related to the origin of neutrino masses. In fact, neutrino masses could arise from spontaneous breaking of ungauged lepton number and the resulting Goldstone boson, the majoron, may pick up a mass due to gravity and play the role of dark matter. I will first examine the cosmological constraints on the majoron density and...
Dr
Sara Buson
(INFN & University of Padova)
22/05/2013, 15:45
During the last years our knowledge of Active Galactic Nuclei (AGNs) in the gamma-ray band has received a huge boost mainly due to the advent of a new generation of satellite instruments, such as the Fermi Large Area Telescope (LAT) and AGILE. Besides incrementing tremendously the number of gamma-ray detected objects and opening the window to the discovery of unexpected source classes, the new...
Ms
Celine Tchernin
(University of Geneva)
22/05/2013, 16:30
The relativistic electrons responsible for the observed broad band synchrotron / inverse Compton emission from blazars can be either directly accelerated at the source (primary electrons) or produced in result of interactions of high energy protons with surrounding medium (secondary electrons). If the observed electromagnetic emission from blazars is produced by secondary electrons, neutrino...
Dr
Juan de Dios Zornoza
(IFIC)
22/05/2013, 16:30
Dark matter is one of the most important scientific goals for neutrino telescopes. These instruments have particular advantages with respect to other experimental approaches. Compared to direct searches, the sensitivity of neutrino telescopes to probe the spin-dependent cross section of WIMP-proton is unsurpassed. On the other hand, neutrino telescopes can look for dark matter in the Sun, so a...
Mr
Agustín Sánchez Losa
(IFIC)
22/05/2013, 17:00
The ANTARES telescope, with a duty cycle close to unity and a full hemisphere of the sky at all the times visible, is well suited to detect neutrinos produced in astrophysical transient sources. Assuming a known neutrino production period, the background and point-source sensitivity can be drastically improved by selecting a narrow time window around it. Blazars are radio-loud active galactic...
Dr
Roberto A. Lineros
(IFIC (CSIC/U.Valencia))
22/05/2013, 17:10
Synchrotron emission from electron cosmic ray populations can be used to study both cosmic rays physics and WIMP dark matter imprints on radio skymaps. We used available radio data - from MHz to GHz - to analyze the contribution from galactic WIMP annihilations and impose constraints on WIMP observables: annihilation cross section, channel and mass. Depending on the annihilation channel we...
Dr
Paolo Desiati
(University of Wisconsin - Madison)
22/05/2013, 17:30
The study of the cosmic ray anisotropy in the TeV-PeV energy range could provide clues about the origin and propagation of cosmic rays in our galaxy. The measurement of this per-mille-anisotropy requires data sets with several billion cosmic-ray events. A sample of this size has been collected over the last six years by the IceCube neutrino telescope at the south pole, which detects cosmic-ray...
Mrs
Clara Cuesta
(University of Zaragoza)
22/05/2013, 17:50
The ANAIS (Annual Modulation with NaI(Tl) Scintillators) experiment aims at the confirmation of the DAMA/LIBRA signal using the same target and technique at the Canfranc Underground Laboratory. 250 kg of ultrapure NaI(Tl) crystals will be used as a target, divided into 20 modules, each coupled to two photomultipliers. Two NaI(Tl) crystals of 12.5 kg each, grown by Alpha Spectra from a powder...
Carlo Alessandro Nicolau
(ROMA1)
22/05/2013, 18:00
The KM3NeT-Italy Collaboration has entered the production stage of an 8 tower apparatus that will be deployed at about 100 km away from the Sicily coast. The architecture of the system is based on the NEMO Phase-2 prototype tower that is taking data since the deployment in March 2013. In order to optimize production costs, power consumpion, and usability some components have been re-engineered...
Mr
Miguel Peiró
(IFT UAM/CSIC)
22/05/2013, 18:10
Nowadays the situation regarding the detection of Dark Matter (DM) is extremely exciting and promising. On the one hand, indirect detection experiments, such as Femi-LAT, are collecting data from the whole sky and beginning to constrain vanilla DM models, specially for light DM masses. On the other hand, direct detection experiments have reached an unprecedented sensitivity, starting to...
Prof.
Andrea Lavagno
(Politecnico di Torino)
22/05/2013, 18:30
Recent progress in growth of single crystal Chemical Vapour Deposition (CVD) diamonds of very high purity and high homogeneity has opened new perspectives to UV photosensors dedicated to work optically coupled to next generation two-phase liquid-Ar (LAr) and/or liquid-Xe (LXe) detectors for future neutrino and dark matter experiments. These physical investigations require detectors that...
Ms
Maike Helena Kunnas
(University of Hamburg)
22/05/2013, 18:32
As a non-imaging wide-angle Cherenkov air shower detector array with
an area of up to 100 km2, HiSCORE (Hundred Square km Cosmic ORigin
Explorer) is built to measure gamma rays and cosmic rays in an
energy range of 10 TeV up to 1EeV. Three stations consisting of light
collector Winston cones equipped with photomultiplier tubes have
already been deployed to Tunka Valley, Russia. The first...
Ignacio Taboada
(Georgia Institute of Technology)
22/05/2013, 18:36
Gamma Ray Bursts (GRBs) are among the most powerful events in the Universe. They have been observed from radio to GeV energies. In the past few years Fermi LAT has shown that GRBs are able to produce photons up to 30 GeV (approx. 90 GeV corrected for redshift for GRB 090902B). It is unknown up to what energy the spectrum extends. Studying the spectrum beyond 10 GeV, is of interest in...
Prof.
Fazale Aleem
(The University of Lahore, Pakistan)
22/05/2013, 18:37
Total cross section measurements at cosmic ray energies can reveal information about the shape of hadronic matter. Recent measurements at cosmic ray energies and at TOTEM/LHC confirm the growth of the total cross section. Based on theoretical investigations it is found that Geometrical picture helps us in having a glimpse of hadronic radii indicating the growth of hadrons at ultrahigh energies.
Dr
Mohamed Chérif TALAI
(Badji Mokhtar University of Annaba, Physics Rays Laboratory, BP 12, Annaba 23000 ALGERIA)
22/05/2013, 18:38
Detailed simulations of EAS have been carried out with CORSIKA program in order to evaluate the energy brought by different shower components at ground level and transmitted underground. A special attention is given to the angular distributions and to the collimation of beams penetrating deep underground or underwater. The natural collimation of high energy particles in EAS cores results...
Mr
Rafik Sedrati
(Physics Department, Badji Mokhtar University, B. P. 12, Annaba 23000, Algeria)
22/05/2013, 18:40
In the last few years, very important data on high-energy cosmic-ray electrons and positrons from high-precision space-borne and ground-based experiments have attracted a great deal of interest.These particles represent a unique probe for studying local comic-ray accelerators because they lose energy very efficiently and rapidly by two dominant processes: inverse Compton scattering and...
Prof.
Daniele Fargion
(ROMA1)
22/05/2013, 18:42
GRBs have been found within a wide range of power and photon energy spectra. Their understanding was usually seen as the largest explosion, fireball, billion times a SN one. Fireball, by definition were isotropic. Last decades have been an evolution of fire-ball hitting shells in some fountain of tens degree size. I advocated since 1998 a much thinner jet whose solid angle is a part of a...
Roberto Battiston
(PG)
23/05/2013, 09:40
Exactly two years ago, the AMS-02 spectrometer was installed on the ISS to start its long mission to perform highly accurate measurements of Cosmic Rays up the TeV region. We discuss the status of the experiment after two years in space and the first results, in particular the measurement of positron/electron ratio up to 350 GeV.
Prof.
Piergiorgio Picozza
(INFN and University of Rome Tor Vergata)
23/05/2013, 10:00
The JEM-EUSO experiment, Extreme Universe Space Observatory at the Japanese Module of the International Space Station, is the first space mission devoted to the scientific research of cosmic rays of highest energies. JEM-EUSO will address basic problems of fundamental physics and high-energy astrophysics studying the nature and origin of the Ultra High Energy Cosmic Rays (E > 3×10^19 eV). The...
Prof.
Pietro Ubertini
(IASP-INAF)
23/05/2013, 10:20
ABSTRACT
ESAs INTEGRAL Space Observatory has just spent his first decade in orbit, producing an unprecedented harvest of results in the soft gamma-ray range, ranging from the inventory of the high energy sources, to the discovery of hundreds of variable soft gamma-ray sources to the mapping of the Aluminum and 511 keV annihilation line in the Galaxy and the evidence of polarized gamma ray...
Paolo Lipari
(ROMA1)
23/05/2013, 10:40
This talk will discuss two questions about the propagation of cosmic rays: the charge dependent modulation in the heliosphere and the confinement of particles in the Milky Way.
In both cases the global structure of the magnetic field plays a crucial role.
Prof.
Guido Altarelli
(Universita' di Roma Tre & CERN)
23/05/2013, 11:30
We present a concise overview of the status of particle physics after the important recent experimental developments.
Dr
Veronique Van Elewyck
(APC & Université Paris Diderot)
23/05/2013, 12:00
The ANTARES neutrino telescope is currently the largest operating water Cherenkov detector and the largest neutrino detector in the Northern Hemisphere. It comprises 885 optical modules distributed on 12 detection lines anchored at a depth of about 2,5 km in the Mediterranean Sea near Toulon (France). Its main scientific target is the detection of high-energy (TeV and beyond) neutrinos from...
Ignacio Taboada
(Georgia Institute of Technology)
23/05/2013, 12:20
IceCube is a neutrino observatory in operation at the geographical South Pole. The main objective of IceCube is to conduct high-energy neutrino astronomy, including the search for the sources of cosmic rays. Neutrinos are detected by observing blue Cherenkov light from charged particles product of neutrino-matter interaction at or near the
detector. An array of 86 strings, each consisting of...
Dr
Juan-Jose Hernandez-Rey
(IFIC (CSIC-University of Valencia))
23/05/2013, 12:40
The KM3NeT Collaboration aims to build, deploy and operate in the Mediterranean Sea a neutrino telescope with a volume of several cube kilometres. Using the experienced gained by the precursor projects, this telescope will complement IceCube, ensuring full coverage of the sky. Due to its location, it will have a privileged access to the Galactic centre and to a large fraction of the Galactic...
Prof.
Zhan-Arys Dzhilkibaev
(Institute for Nuclear Research)
23/05/2013, 13:00
The construction of a km3-scale neutrino telescope – the Gigaton Volume Detector (GVD) in Lake Baikal – is the central goal of the Baikal collaboration. During the R&D phase of the GVD project in 2008–2010 years the basic elements of GVD – new optical modules, FADC readout units, underwater communications and trigger systems – have been developed, produced and tested in situ by long-term...
Dr
Barbara Patricelli
(Astronomy Institute - UNAM)
23/05/2013, 14:30
The blazar Mrk 421 is one of the brightest extragalactic TeV gamma-ray sources. Like the other TeV blazars, it presents flaring episodes in both X-rays and TeV gamma-rays. A correlation has been observed between the emissions in these two energy bands, although not all X-ray flares have been associated with a simultaneous increase in the TeV flux.
Milagro was a TeV gamma-ray detector located...
Dr
Roberto Iuppa
(University of Rome Tor Vergata)
23/05/2013, 14:30
In the last decade important results were obtained about CR anisotropy at energy below the knee, i.e. for galactic CRs. Experiments like Tibet ASg, Milagro, ARGO-YBJ and Icecube reached unprecedented accuracy in measuring the arrival direction distribution of CRs and collected more than 10^12 showers both in the northern and the southern hemisphere. There have been important findings, like the...
Prof.
Anatoly Petrukhin
(MEPhI)
23/05/2013, 14:45
The term “muon puzzle” was finally formulated at International Symposium on Future Directions in UHECR Physics in CERN 13-16 February 2012. In this talk various aspects of muon puzzle and brief history of their appearance are considered. It is possible to separate two types of experimental results: an excess of muon bundles which is increasing with energy of primary particles, and excess of...
Dr
David Staszak
(McGill)
23/05/2013, 14:45
VERITAS is an array of four imaging atmospheric Cherenkov telescopes near Tucson, Arizona and is one of the world's most sensitive detectors of very high energy (VHE: >100 GeV) gamma rays and cosmic rays. The scientific reach of VERITAS covers the study of both Extragalactic and Galactic objects and the search for astrophysical Dark Matter. In this talk I will discuss the status of VERITAS...
Prof.
Daniele Fargion
(ROMA1)
23/05/2013, 15:00
UHECR may keep memory of their source because their rigidity do not suffer much of magnetic bending. Therefore we are waiting for the birth of an UHECR astronomy. We do observe by AUGER a little UHECR clustering. On the other side at TeVs-PeVs energy scale cosmic rays at medium scale show anisotropy in the sky, without any plausible source or reasonable explanation. We suggest that UHECR...
Dr
Antonio Marinelli
(UNAM - Physics Institute)
23/05/2013, 15:05
The High Altitude Water Cherenkov (HAWC) observatory is a TeV gamma-ray and cosmic-ray detector currently under construction at an altitude of 4100 m close to volcano Sierra Negra in the state of Puebla, Mexico. The HAWC observatory is an extensive air-shower array comprised of 300 optically-isolated water Cherenkov detectors (WCDs). Each WCD contains ~200,000 liters of filtered water and four...
Mrs
Jennifer MALLER
(Subatech)
23/05/2013, 15:15
Deployed at the end of 2010 at the Pierre Auger observatory, the first stage of the Auger Engineering Radio Array, AERA24, consists of 24 radio stations covering an area of 0.5 km². AERA measures the radio emission from cosmic-ray induced air showers. This electric field is used to constrain the characteristics of the primary particle: arrival direction, energy and nature.These studies are...
Dr
Silvia Vernetto
(OATO - INAF)
23/05/2013, 15:20
A large fraction of unidentified TeV gamma-ray sources observed in the Galaxy are spatially extended, raising the question of why there are so few point-like VHE sources. The study of these objects is important because the extended emission could be the result of cosmic ray interactions with the ambient medium which provides the target to produce TeV gamma-rays.
Since the instrument...
Dr
M Angeles Perez Garcia
(University of Salamanca and IUFFyM, Spain)
23/05/2013, 15:30
We discuss the possibility that some recently measured anisotropic cosmic ray components in the TeV-PeV range may be an indication of the ejection of a peculiar type of matter formed in a neutron star internal transition caused by the critical accretion of dark matter from the galactic halo.Current parallel accelerator experiments on earth or on the ISS may shed light on this exotic form of matter.
Dr
Satyendra Thoudam
(Department of Astrophysics, Radboud University Nijmegen, Nijmegen, The Netherlands)
23/05/2013, 15:40
Recent detailed analysis of the Fermi-LAT data has discovered two giant gamma-ray emission regions, the so-called Fermi bubbles, extending up to ~ 50 degree in Galactic latitude above and below the Galactic center with a width of ~ 40 degree in longitude. The origin of the gamma-ray emission is not clearly understood. Suggested explanations include injection of cosmic-ray nuclei from the...
Paolo Montini
(INFN - Sezione di Roma TRE)
23/05/2013, 15:45
The ARGO-YBJ experiment is a full-coverage air shower detector operating at the Yangbajing International Cosmic Ray Observatory (Tibet, P.R China, 4300 m a.s.l.). The detector was in stable data taking in its full configuration from Nov. 2007 to Dec 2012. More than 10^11 events have been collected and reconstructed. Due to its characteristics (full-coverage, high segmentation,high altitude...
Mr
Edoardo Striani
(INAF-IAPS, Università di Roma Tor Vergata & INFN Roma Tor Vergata)
23/05/2013, 15:55
The Crab Nebula, one of the most studied objects in high energy astrophysics, was discovered to produce strong and short gamma-ray flares by the AGILE satellite. More recently a slower and less intense component of enhanced emission was deteceted in gamma rays. This transient gamma-ray emission leads to substantially revise current models of particle acceleration in Pulsar Wind Nebulae. The...
Rafael Alves Batista
(University of Hamburg)
23/05/2013, 16:00
The origin, propagation, and mechanisms of acceleration of the ultra-high energy cosmic rays (UHECRs) are not yet well understood. Aiming for a better interpretation of the available experimental data, it is important to develop computational tools to propagate these cosmic rays from their source to Earth, and confront theoretical models with the current data. A realistic simulation of the...
Dr
Sabina Sabatini
(INAF IAPS)
23/05/2013, 16:45
Gamma-ray observations by the AGILE satellite during the period mid-2007-2010 of the black hole binary system Cygnus X-1 will be presented. The source was observed both in the most common hard state and during a remarkably prolonged `soft state' phase (June 2010 -- May
2011). Previous 1--10 MeV observations of Cyg X-1 in this state hinted at a possible existence of a non-thermal particle...
Gonzalo Rodriguez Fernandez
(ROMA2)
23/05/2013, 16:45
We report a measurement of the cosmic ray energy spectrum based on the
high statistics collected by the surface detector of the Pierre Auger Observatory. Based on the combination of fluorescence detector (FD) and surface detector (SD) and do not rely on detailed numerical simulation or any assumption about the chemical composition. The energy calibration of the observables, which exploits the...
Dr
Giovanni Piano
(INAF-IAPS Roma)
23/05/2013, 17:00
The AGILE satellite detected several episodes of transient gamma-ray emission from Cygnus X-3. Cross-correlating the AGILE light curve with both X-ray and radio monitoring data, we found that the main events of gamma-ray activity were detected while the system was in soft spectral X-ray states, that coincide with local and often sharp minima of the hard X-ray flux, a few days before intense...
Marco Giulio Giammarchi
(MI)
23/05/2013, 17:15
The Borexino experiment has recently completed the Phase I and has already started the Phase II, with even lower radioactive background.
The talk will summarize the result of the Phase I on solar and geophysical neutrinos. Besides, it will cover the contents of the letter of intent of Phase II, recently published on ArXiV. The Phase II aims at the completion of the study of the low energy...
Mr
Ali Yilmaz
(Abant Izzet Baysal University 14250, Bolu, Turkey)
23/05/2013, 17:25
We present the preliminary test results of the prototype detector, working at Sphinx Observatory Center, Jungfraujoch ($\sim$3800 m a.s.l.) HFSJG - Switzerland. This prototype detector is designed to measure a large angle cosmic rays flux emerging from the Earth crust. This station provides us an opportunity to understand if the prototype detector works safely under harsh environmental...
Bjoern Lehnert
(TU Dresden)
23/05/2013, 17:45
The GERmanium Detector Array (GERDA) is an experiment designed to investigate the neutrinoless double beta decay (0nubb) in 76Ge. An array of high purity germanium detectors enriched to 86% of 76Ge is operated inside 65m^3 of liquid argon (LAr) inside the Laboratori Nazionali del Gran Sasso.
The experiment aims to explore the 0nubb half-life up to 1.4e26 yr with a collected exposure of 100 kg...
Prof.
Vasily Prosin
(Skobeltsyn Institute of Nuclear Physics of Lomonosov Moscow State University)
24/05/2013, 09:00
The improved methods of EAS parameters reconstruction in Tunka-133 suitable both for the internal and external shower core position are described. The methods are used for the analysis of data collected during three winter seasons from 2009 till 2012. The primary CR energy spectrum in the range 10^15 – 10^18 eV is presented. The variation of X_max distribution parameters with energy and...
Mr
Dmitriy Kostunin
(Karlsruhe Intitute of Technology, Germany)
24/05/2013, 09:20
Tunka-Rex is the new radio extension to Tunka-133 located in Siberia close to lake Baikal. The latter is a photomultiplier array registering air-Cherenkov light from air showers induced by cosmic-ray particles with initial energies of $10^16$ – $10^18$ eV. Tunka-Rex extends this detector with 20 antennas spread over an area of 1 km2 . It is triggered externally by Tunka-133, and detects the...
Dr
Gus Sinnis
(Los Alamos National Laboratory)
24/05/2013, 09:40
The High Altitude Water Cherenkov (HAWC) Observatory is a wide-field gamma-ray detector sensitive to gamma rays with energies between 100 GeV and 100 TeV. Located on the volcán Sierra Negra in Puebla, Mexico at an elevation of 4100 meters above sea level, HAWC will observe ~6 sr of the sky each day. The large field-of-view and continuous operation make HAWC an ideal instrument to search the...
Alessandro De Angelis
(UD)
24/05/2013, 10:20
Cherenkov telescopes can open a new light on several aspects of fundamental physics, providing information complementary to accelerators. In this talk I concentrate on the implications of the characteristics of photon propagation on the existence of light particles coupling to photons, and to possible new physics beyond relativity.
Dr
lilian martin
(subatech)
24/05/2013, 11:30
Our knowledge on ultra-high energy cosmic rays and their underlying sources and acceleration mechanisms is steadily improving thanks to the large observatories nowadays in operation. However the need for a next generation instrument is emerging from their experimental limitations and the scientific questions currently out of reach within a reasonable time line. Within these scope, the main...
Dr
Satyendra Thoudam
(Department of Astrophysics/IMAPP, Radboud University Nijmegen, 6500 GL Nijmegen, The Netherlands)
24/05/2013, 11:50
LOFAR (the LOw Frequency ARray) is a new kind of radio telescope built in the Netherlands and its neighboring countries for astronomical observations in the low frequency range of ~ 10-240 MHz. Unlike traditional radio telescopes which consist of steerable big parabolic dishes, LOFAR uses simple dipole antennas which remain static on the ground. Using digital signal processing, LOFAR can point...
Dr
Kwang-Chang Lai
(Chang Gung University)
24/05/2013, 12:10
We propose a new method to identify flavors of ultra high energy cosmic neutrinos. Energy loss of leptons in matter provides important informations for the detection of neutrinos originated from high energy astrophysical sources. 50 years ago, Askaryan proposed to detect Cherenkov signals by radio wave from the negative charge excess of particle showers. The theory of Cherenkov pulses with...
Dr
Irene Di Palma
(Max Planck Institute for Gravitational Physics (Albert Einstein Institute))
24/05/2013, 12:30
With the recent development of experimental techniques that have opened new windows of observation of the cosmic radiation in all its components, multi-messenger astronomy is entering an exciting era. Many astrophysical sources and cataclysmic cosmic events with burst activity can be plausible sources of concomitant gravitational waves (GWs) and high-energy neutrinos (HENs). Such messengers...
Dr
Juan de Dios Zornoza
(IFIC)
24/05/2013, 14:30
Prof.
Petr Tinyakov
(ULB (Université Libre de Bruxelles))
24/05/2013, 15:15
Aldo Morselli
(ROMA2)
24/05/2013, 16:00
Antonio Capone
(ROMA1)
24/05/2013, 16:45
Dr
Taoufik Djemil
(Badji Mokhtar University, Annaba, Algeria.)
During the last decade, balloon-borne experiments dedicated to more and more detailed measurements of low energy cosmic rays have achieved important progress : new challenge in solar physics and dosimetry, search for signals of dark matter in cosmic rays and diffuse γ-rays at higher energy, search for antimatter or consistency of the “leaky box” model, etc. New candidates enlarging the...
