Documents in process

Compared to conventional welding consumables using low transformation temperature (LTT)filler materials is an innovative method to mitigate tensile residual stresses due to delayedmartensite transformation of the weld. For the effective usage of LTT filler materials, a deeperunderstanding of the complex processes that lead to the final residual stress state during multipasswelding is necessary. [...]

The present work is focused on the role of ZrO2 modification in theperformance of CuO modified TiO2. Zirconia loading leads to formationof more resistant photocatalytic layers compared to samples modifiedwith only copper containing species. [...]

Although many high-energy neutrinos detected by the IceCube telescope are believed to have an extraterrestrial origin, their astrophysical sources remain a mystery. Recently, an unprecedented discovery of a high-energy muon neutrino event coincident with a multiwavelength flare from a blazar, TXS~0506+056, shed some light on the origin of the neutrinos. [...]

We study the requirement on the jet power in the conventional p-$\gamma$ models (photopion production and Bethe-Heitler pair production) for TeV BL Lac objects. We select a sample of TeV BL Lac objects whose SEDs are difficult to be explained by the one-zone leptonic model. [...]

Various studies have implied the existence of a gaseous halo around the Galaxy extending out to 100 kpc. Galactic cosmic rays (CRs) that propagate to the halo, either by diffusion or by convection with the possibly existing large-scale Galactic wind, can interact with the gas therein and produce gamma-rays via proton-proton collision. [...]

The Photo Injector Test facility at DESY in Zeuthen (PITZ) is dedicated to the development of high-brightness electron sources for free-electron lasers. At PITZ, to measure the emittance of space-charge-dominated beams, the slit scan technique is used. [...]