The SST-1M project for the Cherenkov Telescope Array

The SST-1M project, run by a Consortium of institutes from Czech Republic, Poland and Switzerland, has been proposed as a solution for implementing the small-size telescope array of the southern site of the Cherenkov Telescope Array. The technology is a pathfinder for efficient production of cost-effective imaging air Cherenkov telescopes. We report on the main system features and recent upgrades, the performances validation and the operation campaign carried out in 2018

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for $\gamma$-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of $\gamma$-ray cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of $\gamma$-ray absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift $z=2$ and to constrain or detect $\gamma$-ray halos up to intergalactic-magnetic-field strengths of at least 0.3pG. Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from $\gamma$-ray astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of $\gamma$-ray cosmology

Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

We provide an updated assessment of the power of the Cherenkov Telescope Array (CTA) to search for thermally produced dark matter at the TeV scale, via the associated gamma-ray signal from pair-annihilating dark matter particles in the region around the Galactic centre. We find that CTA will open a new window of discovery potential, significantly extending the range of robustly testable models given a standard cuspy profile of the dark matter density distribution. Importantly, even for a cored profile, the projected sensitivity of CTA will be sufficient to probe various well-motivated models of thermally produced dark matter at the TeV scale. This is due to CTA's unprecedented sensitivity, angular and energy resolutions, and the planned observational strategy. The survey of the inner Galaxy will cover a much larger region than corresponding previous observational campaigns with imaging atmospheric Cherenkov telescopes. CTA will map with unprecedented precision the large-scale diffuse emission in high-energy gamma rays, constituting a background for dark matter searches for which we adopt state-of-the-art models based on current data. Throughout our analysis, we use up-to-date event reconstruction Monte Carlo tools developed by the CTA consortium, and pay special attention to quantifying the level of instrumental systematic uncertainties, as well as background template systematic errors, required to probe thermally produced dark matter at these energies.</p

Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for γ astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental physics. We study some of the salient areas of γ cosmology that can be explored as part of the Key Science Projects of CTA, through simulated observations of active galactic nuclei (AGN) and of their relativistic jets. Observations of AGN with CTA will enable a measurement of γ absorption on the extragalactic background light with a statistical uncertainty below 15% up to a redshift z=2 and to constrain or detect γ halos up to intergalactic-magnetic-field strengths of at least 0.3 pG . Extragalactic observations with CTA also show promising potential to probe physics beyond the Standard Model. The best limits on Lorentz invariance violation from γ astronomy will be improved by a factor of at least two to three. CTA will also probe the parameter space in which axion-like particles could constitute a significant fraction, if not all, of dark matter. We conclude on the synergies between CTA and other upcoming facilities that will foster the growth of γ cosmology.</p

Monitoring of machinery and equipment work

Niniejsze opracowanie przedstawia realizację Centrum Nadzoru Energomechanicznego (CNE) w KWK „Piast” oraz wybrane przykłady wykorzystania istniejących aplikacji do nadzorowania istotnych parametrów procesu produkcji.This study shows the implementation of the Electromechanical Supervision Center (CNE) in the "Piast" mine, and selected examples of existing applications used to monitor the essential parameters of the manufacturing process

Historical gardens restoration problems. The example of restoration plan of park in Gorzyń

Celem pracy jest stworzenie koncepcji rewaloryzacji części przypalacowej zabytkowego parku w Gorzyniu w oparciu o wykonaną wcześniej inwentaryzację. Docelowo założenie ma stanowić przestrzeń atrakcyjną dla lokalnej społeczności. Ze względów na duże walory estetyczne, teren będzie miejscem wypoczynkowym, zachęcającym do turystyki i rekreacji. Przedstawiono ogólne informacje o miejscowości Gorzyń, a także rys historyczny zabytkowego parku. Druga część pracy dotyczy inwentaryzacji parku, która umożliwiła przeprowadzenie analiz i opisanie obecnego stanu założenia, a całość wzbogacono dokumentacją fotograficzną. W efekcie końcowym powstała koncepcja rewaloryzacji otoczenia pałacu w postaci graficznej.The aim of this work is to create a concept of restoration of a palace part of historie park in Gorzyń. It is based on previously made tree uwentory. It should be arranged as a public space, attractive for the local community. Due to the high aesthetic value, the area will be meant for leisure, thus encouraging tourism and recreation. The article provides generał information about Gorzyń, as well as the historical background of the palace park. The second part of the work concerns on the tree inventory of the park. The tree iwentory allowed to conduct various analysis and describe the current state of the park. The text is enriched with the photographic documentation. In the end, a concept of restoration of the palace park is provided in graphical form

The Spatial Composition of the Historic Estate in Smolice and Scenic Views in the Modern Landscape

The palace and grounds of Smolice is one of the most beautiful estates in the cultural landscape of southern Wielkopolska. Historically, the palace is relatively new – it was built at the turn of the nineteenth century on the site of an old, wooden mansion and kept the spatial arrangement which had previously been there. The aim of this study is to show the scenic views between the composition of the park in Smolice and the contemporary rural landscape and to compare the historic and contemporary sites in the landscape. The study follows the history of the palace estate in Smolice. A detailed inventory of the estate was taken including a dendrological inventory, which was used to conduct dendrochronological analysis of the species and age of the tree stand. Then, an analysis was made of the spatial composition and historic scenic views between the estate, the landscape and major historical buildings. The research results provide information on the original historic landscape and evidence of the scenic views from the historic landscape that can be seen today. A design and virtual model was made of the reconstruction of the palace estate in Smolice

Palace and garden in Gladysze as an example of Genius Loci of forgotten places

Zespół pałacowo-ogrodowy w Gładyszach charakteryzował się kompozycją barokową, która wpisywała się w krajobraz dawnych Prus Wschodnich. Celem pracy była analiza historycznej kompozycji przestrzennej i powiązań widokowych w kontekście stanu aktualnego obiektu, identyfikacja nawarstwień stylowych oraz rozpoznanie zapomnianego na przestrzeni lat genius loci. Osiągnięcie wymienionych celów możliwe było dzięki zastosowaniu rozbudowanego instrumentarium badawczego i metod analitycznych z wykorzystaniem trójwymiarowych modeli.The palace and baroque garden in Gladysze fit in the landscape of the former East Prussia. The aims of the paper were: the analysis of a historical spatial composition and scenic relations (in the context of the current state of the object) and identification of style layers and forgotten genius loci. The achievement of those objectives was possible by using different methods. Analysis and 3D models were created