Vulcano Workshop 2014 - Frontier Objects in Astrophysics and Particle Physics

Session

Cosmic Rays

23 May 2014, 09:00

Therasia Resort, Conference Room (Vulcano Island, Sicily, Italy)

Conveners

Cosmic Rays

• Jennifer Siegal-Gaskins (Caltech)

Cosmic Rays

• Zhen Cao (Institute of High Energy Physics)

Cosmic Rays

• Pierre Sokolsky (University of Utah)

0. Direct measurements of cosmic rays in space

Roberta Sparvoli (ROMA2)

23/05/2014, 09:00

Direct measurements of the chemical composition and fluxes of cosmic rays have always played a crucial role in advancing our understanding of their acceleration and propagation mechanisms. Direct cosmic-ray observations are possible – with the current technologies – up to energies of about 10^14 eV. In this talk I will give an overview of the physics of cosmic rays by direct measurements,...

10. Results from the PAMELA space experiment

Emiliano Mocchiutti (TS)

23/05/2014, 09:25

Launched on 15th June 2006, the PAMELA apparatus is still collecting data more than doubling the expected life time. A review of the most significant results obtained by PAMELA will be presented with particular emphasis on the precision of the measurements addressing the issue of systematic and statistical errors. Moreover, results about the ongoing analyses about solar modulation and solar...

96. Measurement of the Cosmic Ray energy spectrum with ARGO-YBJ

Giuseppe Di Sciascio (ROMA2)

23/05/2014, 09:50

The ARGO-YBJ detector, located at high altitude in the Cosmic Ray Observatory of Yangbajing in Tibet (4300 m asl, about 600 g/cm2 of atmospheric depth) provides the opportunity to study, with unprecedented resolution, the cosmic ray physics in the primary energy region between 10^12 and 10^16 eV. The preliminary results of the measurement of all-particle and light-component (i.e. protons and...

101. The knee of proton spectrum

Prof. Zhen Cao (Institute of High Energy Physics)

23/05/2014, 10:15

42. High energy cosmic ray anisotropy

Paolo Desiati (University of Wisconsin - Madison)

23/05/2014, 10:30

The study of cosmic ray anisotropy could provide clues about the origin and propagation of cosmic rays in our galactic neighborhood. Because the observed anisotropy is very small, below the permille level, large event volumes are needed in order to characterize it in sufficient detail. Over the last six years, the IceCube Observatory has collected 150 billion cosmic ray induced muon events....

33. Cosmic Rays at Ultra High Energies

Aurelio Grillo (LNGS), Roberto Aloisio (GSSI)

23/05/2014, 11:15

We will review Ultra High Energy Cosmic Rays (UHECR) observations discussing theoretical implications on the possible sources. The latest Auger and Telescope Array observations will be presented in the framework of a general theoretical approach to production and propagation of UHECR.

60. The heavy knee and the light ankle observed with KASCADE-Grande

Andreas Haungs (Karlsruhe Institute of Technology - KIT)

23/05/2014, 11:40

Investigations of the energy spectrum as well as the mass composition of cosmic rays in the energy range of PeV to EeV are important for understanding both, the origin of the galactic and the extragalactic cosmic rays. The multi-detector arrangement of KASCADE and its extension KASCADE-Grande was designed for observations of cosmic ray air showers in this energy range. Most important result...

49. Recent Results from the Telescope Array Experiment

Pierre Sokolsky (University of Utah)

23/05/2014, 12:05

We report on recent results on the spectrum, composition and anisotropy of the highest energy cosmic rays as measured by the Telescope Array experiment. New results include indication of a clustering of cosmic rays from a location near the super-galactic plane and improved methods for comparing composition results between Telescope Array and the Pierre Auger observatory. Plans for expansion of...

70. The Pierre Auger Observatory: highlights and future projects

Antonella Castellina (INFN-TO)

23/05/2014, 12:30

The Pierre Auger Observatory aim is that of studying the ultra high energy cosmic rays, above 10^17 eV. The extremely high quality of the data has led to a number of major breakthroughs. The ankle and the suppression of the flux are clearly established; we present the results on the charged primary composition and the best current limits on cosmogenic photons and neutrinos. We will discuss...

17. Large-Scale Distribution of Arrival Directions of Cosmic Rays Detected at the Pierre Auger Observatory Above 10 PeV

Raffaella Bonino (Università di Torino and INFN)

23/05/2014, 12:55

Searches for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above about 10 PeV at the Pierre Auger Observatory are presented. Although no significant deviation from isotropy is revealed at present, some of the measurements suggest that future data will provide hints for large-scale anisotropies over a wide energy range. Those anisotropies would have...

25. UHECR and GRB Neutrinos : incomplete revolutions ?

Daniele Faragion (Phys Depart and INFN rome SAPIENZA)

23/05/2014, 17:00

UHECR have been foreseen to trace nearby SuperGalactic Plane. Moreover UHECR have been expected to suffer by cosmic photon interaction of a consequent opacity, leading to a EeV neutrino secondary trace (GZK neutrinos). On the other side GRBs have been expected to produce in Fireball TeV-PeV neutrino burst at the same time of GRBs. Both of these three signature are missing.

41. Are cosmic rays still a valuable probe of Lorentz Invariance Violations in the Auger era?

Aurelio Grillo (LNGS-INFN)

23/05/2014, 17:25

The detection of Ultra High Energy Cosmic Rays (UHECRs) allows the study of fundamental physics such as possible modifications of Lorentz Invariance at extreme boosts. I review the constraints of LIVs in the Cosmic Ray sector in the light of the high quality experimental data on UHECRs presently available.

53. Astroparticle Physics with the LHCf Detector at LHC

Alessia Rita Tricomi (CT)

23/05/2014, 17:50

The LHCf detector has been conceived to profit of the unprecedented energies reachable at LHC to provide calibrations of the Monte Carlo models used in High Energy Cosmic Rays Physics through the measurement of the neutral particle spectra produced in the very forward region at LHC. Results of the p-p as well as the p-Pb runs will be shown together with the future plans for the forthcoming...

36. High-energy Gamma Rays detection with the AMS-02 electromagnetic calorimeter

Federico Pilo (PI)

23/05/2014, 18:15

The Alpha Magnetic Spectrometer (AMS-02) is a high-energy particle detector developed to operate on the International Space Station. It was installed and started taking data on May 2011, and is expected to operate for 10-20 years, collecting about 160-320 billion events. The main goals of the experiment are the detection of primordial antimatter and of dark matter, by studying spectra and...

14. High energy atmospheric physics and Terrestrial Gamma-ray Flashes

Martino Marisaldi (INAF-IASF Bologna)

23/05/2014, 18:30

Thunderstorms have been recently established as the most energetic natural particle accelerators on Earth. Starting from the early work by Wilson in 1925 suggesting the acceleration of electrons up to relativistic energies in thunderstorm electric fields, it took about 75 years to build up a sufficiently large observational frame and reach a general consensus on the existence of this...

43. The GAMMA-400 mission

Valter Bonvicini (INFN - Trieste)

23/05/2014, 18:55

GAMMA-400 is a new space mission scheduled to be launched at the end of the current decade on-board the Russian space platform Navigator. The experimental apparatus is designed for simultaneous detection of gamma and cosmic rays in a broad energy range: 100 MeV – 3 TeV for photons, 1 GeV – 20 TeV for electrons and positrons, and up to 10^15 – 10^16 eV for p and He. The characteristics of the...

5. The CALET mission on the International Space Station

Paolo Maestro (SI)

23/05/2014, 19:20

The CALorimetric Electron Telescope (CALET) is an experiment currently under preparation to be launched to the International Space Station (ISS), where it will be installed on the Japanese Experiment Module-Exposure Facility (JEM-EF). Its main scientific goal is to search for possible clues of the presence of astrophysical sources of high-energy electrons nearby the Earth or signatures of dark...

16. AERA – The Auger Engineering Radio Array

Raphael Krause (for the Auger Collaboration)

23/05/2014, 19:35

Extensive air showers originating from ultra-high energy cosmic rays exhibit emission of electromagnetic signals in the radio frequency range. In comparison with other detection techniques, radio measurements deliver complementary information on the electromagnetic shower component with a duty cycle close to 100%. The Auger Engineering Radio Array (AERA) is located within the Pierre Auger...