scholarly journals TAIGA: results and perspectives

2019 ◽  
Vol 207 ◽  
pp. 03003
Author(s):  
L. Kuzmichev ◽  
I. Astapov ◽  
P. Bezyazeekov ◽  
A. Borodin ◽  
M. Brückner ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Energy Range ◽  
Lake Baikal ◽  
Gamma Rays ◽  
High Energy ◽  
Air Shower ◽  
The Status ◽  
Gamma Astronomy ◽  
Under Construction ◽  
Shower Array

In this talk, we describe the status and the perspectives of the hybrid Air Shower Array TAIGA (Tunka Advanced Instrument for cosmic rays and Gamma Astronomy) which is currently under construction in the Tunka Valley close to Lake Baikal and is taking data in its initial configurations. TAIGA is designed for the study of gamma rays and charged cosmic rays in the energy range of 1013 eV - 1018 eV. It has the potential to play an important role in the search for Galactic Pevatrons and within a multi-messenger approach to explore the high-energy sky.

Improving the Angular Resolution of the Buckland Park Air Shower Array

1991 ◽  
Vol 9 (1) ◽  
pp. 113-114
Author(s):  
R. Meyhandan ◽  
R. W. Clay
Keyword(s):  
Cosmic Rays ◽  
Gamma Rays ◽  
Angular Resolution ◽  
Air Showers ◽  
Air Shower ◽  
Plane Front ◽  
Front Shape ◽  
Shower Array ◽  
Primary Cosmic Rays ◽  
Arrival Directions

AbstractAir showers initiated by primary cosmic rays and gamma rays produce shower fronts which are curved. However, the arrival directions of air shower events have normally been fitted assuming a planar shower front. We present a technique which takes the average shower front shape into account to assign an improved shower direction after a first analysis assuming a plane front. We then examine the resulting angular resolution of the Buckland Park array.

scholarly journals The HiSCORE Project

2014 ◽  
Vol 1 (1) ◽  
pp. 283-287 ◽  
Author(s):  
M. Tluczykont ◽  
M. Brückner ◽  
N. Budnev ◽  
O. Chvalaev ◽  
A. Dyachok ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Energy Range ◽  
Cosmic Ray ◽  
Central Question ◽  
Large Area ◽  
Particle Detectors ◽  
Air Shower ◽  
The Status ◽  
Hybrid Detector ◽  
Cosmic Origin

A central question of Astroparticle Physics, the origin of cosmic rays, still remains unsolved. HiSCORE (Hundred*i Square-km Cosmic ORigin Explorer) is a concept for a large-area wide-angle non-imaging air shower detector, addressing this question by searching for cosmic ray pevatrons in the energy range from 10TeV to few PeV and cosmic rays in the energy range above 100TeV. In the framework of the Tunka-HiSCORE project, first prototypes have been deployed on the site of the Tunka-133 experiment, where we plan to install an engineering array covering an area of the order of 1km<sup>2</sup>. On the same site, also imaging and particle detectors are planned, potentially allowing a future hybrid detector system. Here we present the HiSCORE detector principle, its potential for cosmic ray origin search and the status of ongoing activities in the framework of the Tunka-HiSCORE experiment.

scholarly journals Search for astrophysical PeV gamma rays from point sources with Carpet-2

2019 ◽  
Vol 207 ◽  
pp. 03004 ◽  
Author(s):  
D. D. Dzhappuev ◽  
I. M. Dzaparova ◽  
E. A. Gorbacheva ◽  
I. S. Karpikov ◽  
M. M. Khadzhiev ◽  
...  
Keyword(s):  
Gamma Rays ◽  
High Energy ◽  
Point Sources ◽  
Muon Detector ◽  
Air Shower ◽  
Early Results ◽  
Upper Limits ◽  
Shower Array ◽  
Air Shower Array

Early results of the search for Eγ > 1 PeV cosmic photons from point sources with the data of Carpet–2, an air-shower array equipped with a 175 m2 muon detector, are presented. They include 95% CL upper limits on PeV photon fluxes from stacked directions of high-energy IceCube neutrino events and from four predefined sources, Crab, Cyg X-3, Mrk 421 and Mrk 501. An insignificant excess of events from Mrk 421 will be further monitored. Prospects of the use of the upgraded installation, Carpet–3 (410 m2 muon detector), scheduled to start data taking in 2019, for searches of Eγ > 100 TeV photons, are briefly discussed.

scholarly journals The Status of Ultra-High-Energy Gamma-Ray Observations

1994 ◽  
Vol 142 ◽  
pp. 883-888
Author(s):  
R. J. Protheroe
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Crab Nebula ◽  
Statistical Significance ◽  
High Energy ◽  
Archival Data ◽  
Ultra High Energy ◽  
Air Shower ◽  
The Galaxy ◽  
The Status

AbstractIn 1983 Samorski and Stamm found evidence of ultra-high-energy (UHE) gamma-ray emission from Cygnus X-3 in archival data from the Kiel air shower array. The emission appeared to be emitted only at one phase in the binary orbit. The Kiel array was sensitive to air showers generated by particles with energies above 3 × 1015 eV. Their discovery led to searches in archival data from other arrays for evidence of UHE emission from Cygnus X-3 and other potential sources in the Galaxy, and to the construction of new air shower arrays dedicated to UHE astronomy.In the mid 1980s many groups around the world claimed detections of Cygnus X-3, Hercules X-1, Vela X-1, and other objects. Cygnus X-3 is strongly variable at all wavelengths, and so it would be surprising if this variability did not extend to UHE gamma-rays also. This indeed appeared to be the case, and in the mid to late 1980s the UHE gamma-ray output showed a steady decline apart from transient UHE emission following giant radio flares. With the exception of possible detections above 1017 eV by the Fly’s Eye and Akeno Array, I am unaware of any statistically compelling claimed detections of this source reported over the past 4 years. The new arrays—CASA-MIA and SPASE—have not detected any of the claimed sources, and it seems likely that at least some of these early claims may have been premature. However, although none of the observations taken alone was of extremely high statistical significance, the observations of Cygnus X-3 by different groups showed a consistency which I feel cannot be ascribed to chance alone. The observations of Cygnus X-3 and the Crab Nebula/Pulsar are reviewed with particular reference to the results published during the last 5 years.Subject headings: gamma rays: observations — pulsars: individual (Crab Nebula) — stars: individual (Cygnus X-3)

REVIEW ON PRECISION MEASUREMENTS OF HIGH ENERGY HADRONS

2002 ◽  
Vol 17 (12n13) ◽  
pp. 1603-1612 ◽  
Author(s):  
J. CASAUS
Keyword(s):  
Cosmic Rays ◽  
Energy Range ◽  
High Energy ◽  
Galactic Cosmic Rays ◽  
Precision Measurements ◽  
Propagation Models ◽  
The Status ◽  
Free Parameters ◽  
Near Future

Precise measurements of high energy hadrons have been performed either on balloon-borne or space-borne experiments. The status of the present measurements on H and He, heavier nuclei, isotopes and antiprotons is separately reported. Implications of precise measurements within the framework of models for production and propagation of galactic cosmic rays is discussed. Near future experiments are expected to improve in a significant manner the collected statistics and the energy range covered by present experiments. The results thus obtained will validate current propagation models and accurately constrain their free parameters.

INTRODUCTION TO THE SALSA, A SALTDOME SHOWER ARRAY AS A GZK NEUTRINO OBSERVATORY

2006 ◽  
Vol 21 (supp01) ◽  
pp. 252-253 ◽  
Author(s):  
◽  
DAVID SALTZBERG ◽  
Katsushi Arisaka ◽  
Ron Bain ◽  
Steven Barwick ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Weak Interactions ◽  
High Energy ◽  
Ultra High Energy ◽  
Neutrino Telescopes ◽  
High Energy Cosmic Rays ◽  
Decay Times ◽  
Order Of Magnitude ◽  
Under Construction ◽  
Shower Array

The observed spectrum of ultra-high energy cosmic rays virtually guarantees the presence of ultra-high energy neutrinos due to their interaction with the cosmic microwave background. Every one of these neutrinos will point back to its source and, unlike cosmic rays, will arrive at the Earth unattenuated, from sources perhaps as distant as z =20. The neutrino telescopes currently under construction, should discover a handful of these events, probably too few for detailed study. In this talk I will describe how an array of VHF and UHF antennas embedded in a large salt dome, SalSA (Saltdome Shower Array) promises to yield a teraton detector (> 500 km3-sr) for contained neutrino events with energies above 1017 eV. Our simulations show that such a detector may observe several hundreds of these neutrinos over its lifetime. Our simulations also show how such interactions will provide high energy physicists with an energy frontier for weak interactions an order-of-magnitude larger than that of the LHC. The flavor ID capalities of SALSA, combined with the extreme L/E of these neutrinos, will provide a window on neutrino oscillations and decay times eight orders of magnitude higher than laboratory experiments. In addition to the latest simulation results, we describe progress on detectors and site selection.

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