Add to ORKGData from the University of Adelaide air shower array at Buckland Park taken over a three year period have been analyzed to search for evidence of ultra high energy gamma-ray emission from neutron star binary X-ray sources having known orbital periods. The detection of UHE gamma-rays from LMC X-4 above 10 to the 16th power eV, is reported; the first extragalactic object to be positively detected at these energies
Ultra-high energy cosmic rays (UHECRs) are cosmic rays with energy exceeding 10¹⁸ electronvolts. The...
The high-frequency-peaked BL Lacertae object 1ES 0806+524, at redshift z = 0.138, was observed in th...
Considerable interest has developed in the search for local sources of superhigh-energy gamma-rays. ...
It is now more than 20 years since the first ground based gamma ray experiments involving atmospheri...
The Haverah Park 50 m water-Cerenkov array has been used to examine a number of periodic sources for...
Following the discovery of Her X-1 as a source of pulsed 1000 Gev X-rays, a search for emission from...
Although the existence of fluxes of gamma-rays of energies 10 to the 12th power eV is now establish...
A signal (chance probability = .0002) with the 1.24 s period of Hercules X-1 has been observed using...
The long-standing problem of discovering the origins of ultra-high energy (UHE: E $\geq$ 10$\sp{14}$...
This thesis describes the observation of a number of astronomical objects using the University of Du...
The hypothesis that there exists an excess of showers from the Galactic plane on the level 1 to 2% a...
The Fermi Large Area Telescope (Fermi-LAT) is a space instrument which has been in orbit since June ...
The detection of very high energy gamma ray sources has been reported in the last few years by means...
During the period of this contract, June 1, 1991 to November 14, 1992, the major results of our rese...
The discovery of cosmic rays with energies greater than 1014e V has posed a question that has not, a...
Ultra-high energy cosmic rays (UHECRs) are cosmic rays with energy exceeding 10¹⁸ electronvolts. The...
The high-frequency-peaked BL Lacertae object 1ES 0806+524, at redshift z = 0.138, was observed in th...
Considerable interest has developed in the search for local sources of superhigh-energy gamma-rays. ...
It is now more than 20 years since the first ground based gamma ray experiments involving atmospheri...
The Haverah Park 50 m water-Cerenkov array has been used to examine a number of periodic sources for...
Following the discovery of Her X-1 as a source of pulsed 1000 Gev X-rays, a search for emission from...
Although the existence of fluxes of gamma-rays of energies 10 to the 12th power eV is now establish...
A signal (chance probability = .0002) with the 1.24 s period of Hercules X-1 has been observed using...
The long-standing problem of discovering the origins of ultra-high energy (UHE: E $\geq$ 10$\sp{14}$...
This thesis describes the observation of a number of astronomical objects using the University of Du...
The hypothesis that there exists an excess of showers from the Galactic plane on the level 1 to 2% a...
The Fermi Large Area Telescope (Fermi-LAT) is a space instrument which has been in orbit since June ...
The detection of very high energy gamma ray sources has been reported in the last few years by means...
During the period of this contract, June 1, 1991 to November 14, 1992, the major results of our rese...
The discovery of cosmic rays with energies greater than 1014e V has posed a question that has not, a...
Ultra-high energy cosmic rays (UHECRs) are cosmic rays with energy exceeding 10¹⁸ electronvolts. The...
The high-frequency-peaked BL Lacertae object 1ES 0806+524, at redshift z = 0.138, was observed in th...
Considerable interest has developed in the search for local sources of superhigh-energy gamma-rays. ...