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.

Predominantly electromagnetic air showers of energy 1014 eV to 1016 eV

1968 ◽  
Vol 46 (10) ◽  
pp. S72-S74 ◽  
Author(s):  
K. Kamata ◽  
S. Shibata ◽  
O. Saavedra ◽  
V. Domingo ◽  
K. Suga ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Cosmic Radiation ◽  
Progress Report ◽  
Point Sources ◽  
Air Showers ◽  
Air Shower ◽  
Upper Limits ◽  
Primary Cosmic Radiation ◽  
Shower Array ◽  
Air Shower Array

The Chacaltaya air shower array has continued to be used for the accumulation of muon-poor air showers in an attempt to find evidence of gamma rays in the primary cosmic radiation. A progress report is given here, and some upper limits to the intensities are presented for possible point sources and for galactic and isotropic backgrounds.

scholarly journals High Energy γ-Rays from the Direction of the Crab Pulsar

1981 ◽  
Vol 94 ◽  
pp. 327-328
Author(s):  
T. Dzikowski ◽  
B. Grochalska ◽  
J. Gawin ◽  
J. Wdowczyk
Keyword(s):  
High Energy ◽  
Crab Pulsar ◽  
Muon Detector ◽  
Extensive Air Shower ◽  
Air Shower ◽  
Very High Energy ◽  
Γ Rays ◽  
Shower Array ◽  
Very High ◽  
Air Shower Array

A search has been made for very high energy photons from the direction of the Crab Pulsar using the Lodz extensive air shower array. This device is particularly suitable for such a study because it consists of a large muon detector which can be used to search for the characteristic muon poor showers.

A search for prompt ultra-high-energy gamma rays from supernova 1987a

1987 ◽  
Vol 7 (1) ◽  
pp. 73-74 ◽  
Author(s):  
D. J. Bird ◽  
T. E. G. Bruce ◽  
D. Ciampa ◽  
R. W. Clay ◽  
C. L. Corani ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Large Magellanic Cloud ◽  
High Energy ◽  
Ultra High Energy ◽  
Air Shower ◽  
High Energy Gamma ◽  
Supernova 1987A ◽  
Upper Limits ◽  
Energy Gamma ◽  
Shower Array

AbstractA search has been made using the Buckland Park air shower array for evidence of any excess of events from the direction of the recent supernova in the Large Magellanic Cloud. Upper limits resulting from this search and their significance are discussed in this paper.

Search for Ultra-High-Energy Gamma-Rays from SN1987A

1989 ◽  
Vol 8 (1) ◽  
pp. 52-54
Author(s):  
D. J. Bird ◽  
D. Ciampa ◽  
R. W. Clay
Keyword(s):  
Gamma Rays ◽  
High Energy ◽  
First Year ◽  
Ultra High Energy ◽  
Air Shower ◽  
High Energy Gamma ◽  
Upper Limit ◽  
Energy Gamma ◽  
Shower Array ◽  
Air Shower Array

AbstractWe report here a search of data recorded by the Buckland Park air shower array from the first year after the supernova and set an upper limit to the proton luminosity of SN1987A of 7.7 × 1040 ergs s−1.

scholarly journals Search for 10 TeV Gamma-Rays from the Nearby AGNs with the Tibet Air Shower Array

1998 ◽  
Vol 188 ◽  
pp. 440-441
Author(s):  
L.K. Ding ◽  
T. Kobayashi ◽  
K. Mizutani ◽  
A. Shiomi ◽  
Y.H. Tan ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Galactic Nuclei ◽  
High Energy ◽  
Bl Lac Objects ◽  
Air Shower ◽  
Very High Energy ◽  
Tev Gamma Rays ◽  
Shower Array ◽  
Air Shower Array

The detection by EGRET of gamma-rays from more than 50 active galactic nuclei (AGNs) allowed us to expect these objects to be the sources of extragalactic cosmic rays at very high energy. The TeV gamma-rays from nearby BL Lac objects of the AGNs examined were detected by the Whipple Observatory collaboration. In this paper, we present the results given by the Tibet air shower array on the search for 10 TeV gamma-ray emission from 18 relatively nearby AGNs with redshifts of z < 0.07.

High energy y-rays from the direction of the Crab pulsar

1981 ◽  
Vol 301 (1462) ◽  
pp. 641-644 ◽  
Keyword(s):  
High Energy ◽  
Point Sources ◽  
Crab Pulsar ◽  
Muon Detector ◽  
Air Showers ◽  
Extensive Air Shower ◽  
Air Shower ◽  
Very High Energy ◽  
Shower Array ◽  
Very High

An attempt is being made to extend the search for high energy y-rays from point sources to much higher energies by using the method based on investigation of the muon-poor extensive air showers. A search has been made for very high energy photons from the direction of the Crab pulsar (the best known high energy y-ray source) by using the Lodz extensive air shower array. The device is particularly suitable for such a study because it consists of a large muon detector which can be used to search for the characteristic muon-poor showers.

Underground Prototype Water Cherenkov Muon Detector with the Tibet Air Shower Array

2008 ◽  
Author(s):  
M. Amenomori ◽  
X. J. Bi ◽  
D. Chen ◽  
S. W. Cui ◽  
Danzengluobu ◽  
...  
Keyword(s):  
Muon Detector ◽  
Air Shower ◽  
Shower Array ◽  
Air Shower Array
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