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Constraints on an annihilation signal from a core of constant dark matter density around the Milky Way center with H.E.S.S.
(American Physical Society, 2015)
An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No ...
Cosmic-ray positrons from millisecond pulsars
(IOP Publishing, 2015)
Observations by the Fermi Large Area Telescope of γ-ray millisecond pulsar (MSP) light curves imply copious pair
production in their magnetospheres, and not exclusively in those of younger pulsars. Such pair cascades may ...
H.E.S.S. reveals a lack of TeV emission from the supernova remnant Puppis A
(EDP Sciences, 2015)
Context: Puppis A is an interesting ~4 kyr-old supernova remnant (SNR) that shows strong evidence of interaction between the forward shock and a molecular cloud. It has been studied in detail from radio frequencies to ...
Discovery of variable VHE γ-ray emission from the binary system 1FGL J1018.6-5856
(EDP Sciences, 2015)
Re-observations with the HESS telescope array of the very high-energy (VHE) source HESS J1018–589 A that is coincident with the Fermi-LAT γ-ray binary 1FGL J1018.6–5856 have resulted in a source detection significance of ...
A search for optical counterparts of the complex Vela X system
(South African Institute of Physics, 2015)
The pulsar wind nebula (PWN) associated with the Vela pulsar is a bright source
in the radio, X-ray and gamma-ray bands, but not in the optical. This source is very near,
lying at a distance of 290 pc, as inferred from ...
The 2012 flare of PG 1553+113 seen with H.E.S.S. and Fermi-LAT
(IOP Publishing, 2015)
Very high energy (VHE, E > 100 GeV) γ-ray flaring activity of the high-frequency peaked BL Lac object PG 1553+113 has been detected by the H.E.S.S. telescopes. The flux of the source increased by a factor of 3 during the ...
H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
(EDP Sciences, 2015)
G349.7+0.2 is a young Galactic supernova remnant (SNR) located at the distance of 11.5 kpc and observed across the entire electromagnetic spectrum from radio to high energy (HE; 0.1 GeV <E< 100 GeV) γ-rays. Radio and ...
Very-high energy emission from pulsars
(SAIP, 2015)
The vast majority of pulsars detected by the Fermi Large Area Telescope (LAT)
display exponentially cutoff spectra with cutoffs falling in a narrow band around a few GeV.
Early spectral modelling predicted spectral cutoffs ...
Implementation of a goodness-of-fit test for finding optimal concurrent radio and γ-ray pulsar light curves
(SAIP, 2015)
Since the launch of the Fermi Large Area Telescope in 2008 the number of known
γ-ray pulsars has increased immensely to over 200, many of which are also visible in the
radio and X-ray bands. Seyffert et al. (2011) ...
Probing the gamma-ray emission from HESS J1834-087 using H.E.S.S. and Fermi LAT observations
(EDP Sciences, 2015)
Aims: Previous observations with the High Energy Stereoscopic System (H.E.S.S.) have revealed an extended very-high-energy (VHE; E> 100 GeV) γ-ray source, HESS J1834−087, coincident with the supernova remnant (SNR) W41. ...