1,682 research outputs found
Air Shower Measurements in the Primary Energy Range from PeV to EeV
Recent results of advanced experiments with sophisticated measurements of
cosmic rays in the energy range of the so called knee at a few PeV indicate a
distinct knee in the energy spectra of light primary cosmic rays and an
increasing dominance of heavy ones towards higher energies. This leads to the
expectation of knee-like features of the heavy primaries at around 100 PeV. To
investigate in detail this energy region several new experiments are or will be
devised.Comment: 4 pages; submitted to Proceedings of 2nd Workshop on TeV
Astrophysics, Aug 28-31, 2006, Madison, W
A Scintillator and Radio Enhancement of the IceCube Surface Detector Array
An upgrade of the present IceCube surface array (IceTop) with scintillation
detectors and possibly radio antennas is foreseen. The enhanced array will
calibrate the impact of snow accumulation on the reconstruction of cosmic-ray
showers detected by IceTop as well as improve the veto capabilities of the
surface array. In addition, such a hybrid surface array of radio antennas,
scintillators and Cherenkov tanks will enable a number of complementary science
targets for IceCube such as enhanced accuracy to mass composition of cosmic
rays, search for PeV photons from the Galactic Center, or more thorough tests
of the hadronic interaction models. Two prototype stations with 7 scintillation
detectors each have been already deployed at the South Pole in January 2018.
These R&D studies provide a window of opportunity to integrate radio antennas
with minimal effort.Comment: 6 pages, conference proceedings of UHECR 201
Cosmic Rays from the Knee to the Ankle
Investigations of the energy spectrum as well as the mass composition of
cosmic rays in the energy range of PeVto EeV are important for understanding
both, the origin of the galactic and the extragalactic cosmic rays. Recently,
three modern experimental installations (KASCADE-Grande, IceTop, Tunka-133),
dedicated to investigate this primary energy range, have published new results
on the all-particle energy spectrum. In this short review these results are
presented and the similarities and differences discussed. In addition, the
effects of using different hadronic interaction models for interpreting the
measured air-shower data will be examined. Finally, a brief discussion on the
question if the present results are in agreement or in contradiction with
astrophysical models for the transition from galactic to 10 pagesextragalactic
origin of cosmic rays completes this paper.Comment: 10 pages, proceedings of TAUP 2013 conferenc
Radio detection of cosmic rays: present and future
Digital radio detection of cosmic rays has made tremendous progress over the
past decade. It has become increasingly clear where the potential --- but also
the limitations --- of the technique lie. In this article, we discuss roads
that could be followed in future radio detection efforts and try to evaluate
the associated prospects and challenges.Comment: Contribution to the Proceedings of the UHECR2014 conference,
Springdale, UT; to be published in JPS Conf. Pro
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