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Upper limits on the total cosmic-ray luminosity of individual sources
(Institute of Physics - IOPBristol, 2014-07)
In this paper, upper limits on the total luminosity of ultra-high-energy cosmic-rays (UHECR) E > '10 IND. 18'eV) are determined for five individual sources. The upper limit on the integral flux of GeV-TeV gamma-rays is ...
Analysis of atmospheric pressure and temperature effects on cosmic ray measurements
(American Geophysical Union, 2013-04-30)
In this paper, we analyze atmospheric pressure and temperature effects on the records of the cosmic ray detector CARPET. This detector has monitored secondary cosmic ray intensity since 2006 at Complejo Astronómico El ...
An upper limit on the cosmic-ray luminosity of individual sources from gamma-ray observations
(Institute of Physics - IOPBristol, 2013-12)
Different types of extragalactic objects are known to produce TeV gamma-rays. Some of these objects are the most probable candidates to accelerate cosmic rays up to '10 POT.20' eV. It is very well known that gamma-rays can ...
A faraway quasar in the direction of the highest energy Auger event
(IOP PUBLISHING LTD, 2010)
The highest energy cosmic ray event reported by the Auger Observatory has an energy of 148 EeV. It does not correlate with any nearby (z<0.024) object capable of originating such a high energy event. Intrigued by the fact ...
Bounds on the density of sources of ultra-high energy cosmic rays from the Pierre Auger Observatory
(Institute of Physics - IOPBristol, 2013-05)
We derive lower bounds on the density of sources of ultra-high energy cosmic rays from the lack of significant clustering in the arrival directions of the highest energy events detected at the Pierre Auger Observatory. The ...
Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory
(Institute of Physics - IOPBristol, 2011-06)
The Pierre Auger Collaboration has reported evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies E > Eth = 5.5 × 1019 eV. These show a correlation with the distribution of ...
Radio detection of cosmic ray air showers with lopes
(Academiei RomaneBucharest, 2012)
Cosmic ray air showers are high energetic particles coming from the Universe toward the
Earth every second. It is well known that they generate electromagnetic waves in the Earth
atmosphere detectable on the ground. LOPES ...
Upper limits on the total cosmic-ray luminosity of individual sources
(Iop Publishing, 2014-07)
In this paper, upper limits on the total luminosity of ultra-high-energy cosmic-rays (UHECR) (E > 10^18 eV) are determined for five individual sources. The upper limit on the integral flux of GeV-TeV gamma-rays is used to ...
An upper limit on the cosmic-ray luminosity of individual sources from gamma-ray observations
(Iop Publishing, 2013-12)
Different types of extragalactic objects are known to produce TeV gamma-rays. Some of these objects are the most probable candidates to accelerate cosmic rays up to 1020 eV. It is very well known that gamma-rays can be ...