Universität Potsdam
Institut für Physik und Astronomie
Juristische FakultätPhilosophische FakultätHumanwissenschaftliche FakultätWirtschafts- und Sozialwissenschaftliche FakultätMathematisch-Naturwissenschaftliche FakultätUniversität Potsdam

Aktuelle Veröffentlichungen

A Three-year Multi-wavelength Study of the Very-high-energy gamma-Ray Blazar 1ES 0229+200
The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Γ ∼ 2.5), very-high-energy (VHE; E > 100 GeV) emitting γ-ray blazar. VHE measurements of this active galactic nucleus have been used to place constraints on the intensity of the extragalactic background light and the intergalactic magnetic field (IGMF). A multi-wavelength study of this object centered around VHE observations by Very Energetic Radiation Imaging Telescope Array System
Veröffentlichung: Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Behera, B.; Beilicke, M.; Benbow, W.; Berger, K.; Bird, R.; Bouvier, A., A Three-year Multi-wavelength Study of the Very-high-energy gamma-Ray Blazar 1ES 0229+200, The Astrophysical Journal, 782:13 12pp, (2014)
Observations of the Unidentified Gamma-Ray Source TeV J2032+4130 by VERITAS
TeV J2032+4130 was the first unidentified source discovered at very high energies (VHEs; E > 100 GeV), with no obvious counterpart in any other wavelength. It is also the first extended source to be observed in VHE gamma rays. Following its discovery, intensive observational campaigns have been carried out in all wavelengths in order to understand the nature of the object, which have met with limited success. We report here on a deep observation of TeV J2032+4130 based on 48.2 hr of data taken
Veröffentlichung: Aliu, E.; Aune, T.; Behera, B.; Beilicke, M.; Benbow, W.; Berger, K.; Bird, R.; Buckley, J. H.; Bugaev, V.; Cardenzana, J. V., Observations of the Unidentified Gamma-Ray Source TeV J2032+4130 by VERITAS, The Astrophysical Journal, 783:16 9pp, (2014)
Magnetic field amplification and saturation in turbulence behind a relativistic shock
We have investigated via 2D relativistic magnetohydrodynamic simulations the long-term evolution of turbulence created by a relativistic shock propagating through an inhomogeneous medium. In the post-shock region, magnetic field is strongly amplified by turbulent motions triggered by pre-shock density inhomogeneities. Using a long-simulation box we have followed the magnetic field amplification until it is fully developed and saturated. The turbulent velocity is subrelativistic even for a stron
Veröffentlichung: Mizuno, Yosuke; Pohl, Martin; Niemiec, Jacek; Zhang, Bing; Nishikawa, Ken-Ichi; Hardee, Philip E., Magnetic field amplification and saturation in turbulence behind a relativistic shock, MNRAS, 439 3490-3503, (2014)
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