Prof.
Edward Stone
(Caltech)
30/07/2015, 16:30
SH-EX
Highlight talk
After a thirty-five year journey, Voyager 1 began observing the properties on the very local interstellar medium on August 25, 2012, at a radial distance of 121.6 AU. Now at 132 AU, Voyager 1 has been exploring the region where the interstellar wind and magnetic field are perturbed by the flow of interstellar ions around the heliosphere and the formation of a wall of H atoms. The plasma...
Mathieu de Naurois
(CNRS)
30/07/2015, 17:00
GA-EX
Highlight talk
After nearly a decade of operation, the three major arrays of atmospheric Cherenkov telescopes have revolutionized our view of the Very High Energy Universe, unveiling more than 100 sources of various types. MAGIC, consisting of two 17m diameter telescopes on the Canary island of La Palma, and VERITAS, with four 12m telescopes installed in southern Arizona, USA, largely explored the...
Miguel Pato
(OKC Stockholm)
30/07/2015, 17:30
DM-TH
Highlight talk
The presence of dark matter in spiral galaxies was inferred long ago by measuring the rotational speed of the gas across each galaxy. Applying the same technique to the Milky Way, a spiral itself, is much more challenging due to our peculiar position and thus the Galactic distribution of dark matter remains poorly constrained to this day. In this talk, I shall introduce two important...
Samuel Ting
(Massachusetts Inst. of Technology (US))
30/07/2015, 18:00
CR-EX
Highlight talk
In four years on the International Space Station, the AMS experiment has collected more than 65 billion cosmic rays up to TeV energies. The latest results will be summarized.
Mirko Boezio
(Universita e INFN, Trieste (IT))
31/07/2015, 16:30
CR-EX
Highlight talk
The nine years of data taking in space of the experiment PAMELA are
providing interesting information concerning the origin and
propagation of both galactic and solar cosmic rays.
The measured antiparticle component of the cosmic radiation shows
features that can be interpreted in terms of dark matter annihilation or
pulsar contribution. The precise measurements of the energy spectra...
Steven Barwick
(University of California)
31/07/2015, 17:00
NU-EX
Highlight talk
Evidence is growing for the existence of a diffuse flux of astrophysical neutrinos with energies up to a few x 10^15 eV. This has spurred considerable interest in developing new techniques that can extend the search to even higher neutrino energies. Promising new efforts over the past half-decade focus on the radio-Cherenkov technique in polar regions with cold, highly transparent ice. I...
Dr
Marco Ajello
(Clemson University)
31/07/2015, 17:30
GA-EX
Highlight talk
The Fermi Large Area Telescope (LAT) has been routinely gathering science data since August 2008, surveying the full sky every three hours. The first Fermi-LAT catalog of sources detected above 10 GeV (1FHL) relied on three years of data to characterize the $>$10 GeV sky. The improved acceptance and point-spread function of the new Pass 8 event reconstruction and classification together with...
Thomas Hams
31/07/2015, 18:00
CR-EX
Highlight talk
The Super Trans-Iron Galactic Element Recorder (SuperTIGER) long-duration balloon instrument and the Cosmic Ray Isotope Spectrometer (CRIS) on the NASA Advanced Composition Explorer (ACE) satellite have measured the abundances of galactic cosmic-ray elements from 10Ne to 40Zr with high statistics and single-element resolution. SuperTIGER launched from Williams Field, McMurdo Station,...
Markus Ahlers
01/08/2015, 16:30
NU-TH
Highlight talk
I will discuss the recent observation of TeV to PeV neutrinos by the IceCube Cherenkov telescope in the context of multi-messenger astronomy. The corresponding energy range of hadronic gamma-rays is not directly accessible by extragalactic gamma-ray astronomy due to interactions with cosmic radiation backgrounds. Nevertheless, the isotropic sub-TeV gamma-ray background observed by Fermi-LAT...
Simona Murgia
(University of California, Irvine)
01/08/2015, 17:00
DM-EX
Highlight talk
The center of the Milky Way is predicted to be the brightest region in the gamma-ray sky produced by dark matter annihilation or decay. In recent years, claims have been made of an excess consistent with a dark matter annihilation signal in the data collected by the Fermi Large Area Telescope towards the Galactic center. These results are intriguing, however the complexity involved in modeling...
Jรถrg Hรถrandel
(Ru Nijmegen/Nikhef)
01/08/2015, 17:30
CR-EX
Highlight talk
With LOFAR we measure the properties of the radio emission of extensive air showers with high precision in the frequency range 30 to 240 MHz. This allows us to establish key features, such as the lateral density distribution of the radio signals, the shape of the shower front, and the polarization of the radio signal. We obtained the first quantitative measurements in the frequency range...
Richard Mewaldt
(Caltech)
01/08/2015, 18:00
SH-EX
Highlight talk
Measurements with ACE, STEREO, and GOES show that the number of large solar energetic particle (SEP) events in solar cycle 24 is reduced by a factor of ~2 compared to this point of cycle 23, while the fluences of >10 MeV/nuc ions from H to Fe are reduced by factors ranging from ~4 to ~10. We investigate the origin of these cycle-to-cycle differences by evaluating possible factors that...
Daniele Gaggero
03/08/2015, 17:00
GA-TH
Highlight talk
In the first part, I present a detailed overview on recent results regarding modeling of cosmic-ray (CR) propagation in the Galaxy and in the Heliosphere.
In particular I focus on the necessity to go beyond the standard and simplified picture of uniform and homogeneous diffusion, showing that gamma-ray data point towards different propagation regimes in different regions of the Galaxy. I...
Piera Luisa Ghia
03/08/2015, 17:30
CR-EX
Highlight talk
The Pierre Auger Observatory has been detecting ultra-high energy cosmic rays (UHECRs) for more than ten years. It presents the first "hybridโ observatory on the worldโs largest scale, comprising a 3000 km2 surface detector (SD) of 1600 water Cherenkov stations spaced 1500 m apart and four fluorescence detectors (FD) overlooking the array. It also now includes three high elevation fluorescence...
Stefano Gabici
(APC)
03/08/2015, 18:00
GA-EX
Highlight talk
Cosmic rays are an essential ingredient in the evolution of the interstellar medium, as they determine the ionisation level of the dense molecular gas where stars and planets form. In recent years, infrared and millimetre observations provided us with measurements of the cosmic ray ionisation rates in a number of molecular clouds. Such ionisation is mainly determined by cosmic rays in the...
Clancy James
(University of Erlangen-Nuernberg)
04/08/2015, 17:30
NU-EX
Highlight talk
The ANTARES experiment has been running in its final configuration since 2008. It is the largest neutrino telescope in the Northern hemisphere. After the discovery of a cosmic neutrino diffuse flux by the IceCube detector, the search for its origin has become a key mission in high-energy astrophysics. Particularly interesting is the indication (although not significant with the present IceCube...
Charles Jui
(University of Utah)
04/08/2015, 18:00
CR-EX
Highlight talk
The Telescope Array (TA) is the largest experiment in the northern hemisphere actively observing ultrahigh energy cosmic rays. TA is a hybrid detector system combining the precision of the air fluorescence technique with the efficiency of a surface scintillator array. Three fluorescence stations each view 108 degrees in azimuth and up to 30 degrees in elevation. They are located at the...
Paolo Desiati
(University of Wisconsin - Madison)
05/08/2015, 17:00
NU-EX
Highlight talk
The IceCube Neutrino Observatory, designed to identify high energy neutrinos of astrophysical origin, efficiently collects the penetrating by-products of cosmic ray induced extensive air showers: the muons and neutrinos. IceCube, along with its densely instrumented in-fill array Deep-Core, has collected and identified approximately 450,000 neutrinos in the energy range from 10 GeV to over 100...
Dr
John Pretz
(Pennsylvania State University)
05/08/2015, 17:30
GA-EX
Highlight talk
The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory was completed this year at a 4100-meter site on the flank of the Sierra Negra volcano in Mexico. HAWC is a water Cherenkov ground array with the capability to distinguish 100 GeV - 100 TeV gamma rays from the hadronic cosmic-ray background. HAWC is uniquely suited to study extremely high energy cosmic-ray sources, search for...
Ilya Usoskin
(University of Oulu)
05/08/2015, 18:00
SH-EX
Highlight talk
Solar energetic particle (SEP) fluxes are typically quantified in the F30 units (integrated fluence of particles with energy above 30 MeV) and their direct measurements are available only for the last several decades. On the other hand, a reconstruction of major SEP events in the distant past (centennia-millennia) is possible using data on the cosmogenic isotopes $^{14}$C and $^{10}$Be in...
