4.1k citations · 60.7k across the 488 of their papers we have counts for
10 papers · 2 filters
H.E.S.S. Observations of PKS 2155-304
The H. E. S. S. Collaboration, :, F. Aharonian
The high-frequency peaked BL Lac PKS 2155-304 at redshift z=0.117 has been detected with high significance (~45 sigma) at energies greater than 160 GeV, using the H.E.S.S. stereosc…
High-energy particle acceleration in the shell of a supernova remnant
H. E. S. S. Collaboration, :, F. Aharonian
A significant fraction of the energy density of the interstellar medium is in the form of high-energy charged particles (cosmic rays). The origin of these particles remains uncerta…
EGRET upper limits and stacking searches of gamma-ray observations of luminous and ultra-luminous infrared galaxies
Analia N. Cillis, Diego F. Torres, Olaf Reimer
We present a stacking analysis of EGRET -ray observations at the positions of luminous and ultraluminous infrared galaxies. The latter were selected from the recently presented…
Very high energy gamma rays from the direction of Sagittarius A*
H. E. S. S. Collaboration, :, F. Aharonian
We report the detection of a point-like source of very high energy (VHE) gamma-rays coincident within 1' of Sgr A*, obtained with the H.E.S.S. array of Cherenkov telescopes. The ga…
Calibration of cameras of the H.E.S.S. detector
H. E. S. S. Collaboration, :, F. Aharonian
H.E.S.S. - the High Energy Stereoscopic System- is a new system of large atmospheric Cherenkov telescopes for GeV/TeV astronomy. Each of the four telescopes of 107 m^2 mirror area…
The Coma Cluster at gamma-ray energies: multifrequency constraints
A. Reimer, O. Reimer, R. Schlickeiser +1
The Coma cluster exhibits evidence for a high-energetic non-thermal particle population. At frequencies >1 GHz recent radio halo observations confirm a significant spectral steepen…
Luminous infrared galaxies as plausible gamma-ray sources for GLAST and IACTs
Diego F. Torres, Olaf Reimer, Eva Domingo-Santamaria +1
We argue that luminous infrared galaxies (LIGs) may constitute a newly detectable population of gamma-ray sources for the next generation of ground and space-based high energy tele…
The distribution of cosmic-ray sources in the Galaxy, gamma-rays, and the gradient in the CO-to-H2 relation
A. W. Strong, I. V. Moskalenko, O. Reimer +2
We present a solution to the apparent discrepancy between the radial gradient in the diffuse Galactic gamma-ray emissivity and the distribution of supernova remnants, believed to b…
A multi-wavelength search for a counterpart of the unidentified gamma-ray source 3EG J2020+4017 (2CG078+2)
Werner Becker, Martin C. Weisskopf, Zaven Arzoumanian +8
In search of the counterpart to the brightest unidentified gamma-ray source 3EG J2020+4017 we report on new X-ray and radio observations of the gamma-Cygni field with the Chandra X…
Diffuse Gamma Rays: Galactic and Extragalactic Diffuse Emission
I. V. Moskalenko, A. W. Strong, O. Reimer
"Diffuse" gamma rays consist of several components: truly diffuse emission from the interstellar medium, the extragalactic background, whose origin is not firmly established yet, a…