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Acceleration of petaelectronvolt protons in the Galactic Centre
(Nature Publishing Group, 2016)
Galactic cosmic rays reach energies of at least a few petaelectronvolts1 (of the order of 1015 electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators (‘PeVatrons’), but all proposed models of ...
Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S.
(APS, 2016)
The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles ...
Calibration of statistical methods used to constrain pulsar geometries via multiband light curve modelling
(SAIP, 2016)
Since its launch in 2008, the Fermi Large Area Telescope (LAT) has detected over
200 γ-ray pulsars above 100 MeV. This population of pulsars is characterised by a rich diversity
of light curve morphologies. Researchers ...
Investigating gamma-ray fluxes from globular clusters
(SAIP, 2016)
Globular clusters are large collections of old stars that are orbiting the core of
a galaxy. Our Milky Way Galaxy has about 160 known clusters, with perhaps more to be
discovered. We first accumulated the necessary ...
High-energy pulsar light curves in an offset polar cap B-field geometry
(HEASA, 2016)
The light curves and spectral properties of more than 200
γ
-ray pulsars have been measured in
unsurpassed detail in the eight years since the launch of the hugely successful
Fermi
Large Area
Telescope (LAT)
γ
-ray ...
H.E.S.S. limits on linelike dark matter signatures in the 100 GeV to 2 TeV energy range close to the galactic center
(APS, 2016)
A search for dark matter line-like signals was performed in the vicinity of the Galactic Centre by
the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis was
developed to improve the ...
The effect of an offset polar cap dipolar magnetic field on the modeling of the Vela pulsar's γ-ray light curves
(IOP Publishing, 2016)
We performed geometric pulsar light curve modeling using static, retarded vacuum, and offset polar cap (PC) dipole B-fields (the latter is characterized by a parameter epsilon), in conjunction with standard two-pole caustic ...