Explanipedia

Gammapy: A Python package for gamma-ray astronomy Open

Axel Donath, R. Terrier, Quentin Rémy, A. Sinha, Cosimo Nigro , et al. · 2023

Context. Traditionally, TeV- γ -ray astronomy has been conducted by experiments employing proprietary data and analysis software. However, the next generation of γ -ray instruments, such as the Cherenkov Telescope Array Observatory (CTAO),…

ctools 1.7.4 Open

J. Knödlseder, L. Tibaldo, D. Tiziani, Andreas Specovius, J. V Cardenzana , et al. · 2021

ctools is a software package developed for the scientific analysis of Cherenkov Telescope Array (CTA) data, as well as data from existing Imaging Air Cherenkov Telescopes (such as H.E.S.S., MAGIC or VERITAS). ctools comprises a set of ftoo…

Progress of the Cherenkov Telescope Array project in Poland Open

M. Ostrowski, E. O. Angüner, S. Bajtlik, Tomasz Balawajder, A. Barnacka , et al. · 2018

Book Review Open

H. Siejkowski · 2018

Astrophysics of Black Holes.From Fundamental Aspects to Latest Development'' is a textbook reporting lectures given during the Fudan Winter School on Astrophysical Black Holes that was held at Fudan University in Shanghai in February 2014.…

Magnetic field evolution in dwarf and Magellanic-type galaxies Open

H. Siejkowski, M. Soida, K. T. Chyży · 2018

\nAims. Low-mass galaxies radio observations show in many cases surprisingly high levels of magnetic field. The mass and kinematics of such objects do not favour the development of effective large-scale dynamo action. We attempted to check…

Characterizing long-term optical, ultraviolet and X-ray variability in different activity states of OJ 287 Open

H. Siejkowski, A. Wierzcholska · 2017

We have studied long-term optical, ultraviolet (UV) and X-ray observations of\nOJ 287 collected with the UVOT and XRT instruments mounted on board the Swift\nsatellite to quantify spectral and temporal variability patterns observed\nduring…

GammaLib and ctools Open

J. Knödlseder, M. Mayer, C. Deil, J.-B. Cayrou, Ellis R. Owen , et al. · 2016

The field of gamma-ray astronomy has seen important progress during the last\ndecade, yet there exists so far no common software framework for the scientific\nanalysis of gamma-ray telescope data. We propose to fill this gap by means of\nt…

GammaLib and ctools: A software framework for the analysis of astronomical gamma-ray data Open

J. Knödlseder, M. Mayer, Christoph Deil, J.-B. Cayrou, Ellis R. Owen , et al. · 2016

The field of gamma-ray astronomy has seen important progress during the last decade, yet there exists so far no common software framework for the scientific analysis of gamma-ray telescope data. We propose to fill this gap by means of the …

First hard X-ray observations of the blazar S5 0716+714 with<i>NuSTAR</i>during a multiwavelength campaign Open

A. Wierzcholska, H. Siejkowski · 2016

We report the results of a multifrequency campaign targeting S5 0716+714 in the flaring state of the source observed in 2015 January and February. The observations have been performed using the following instruments: Fermi/Large Area Teles…

Cherenkov Telescope Array Data Management Open

G. Lamanna, L. A. Antonelli, J. L. Contreras, J. Knödlseder, K. Kosack , et al. · 2015

Very High Energy gamma-ray astronomy with the Cherenkov Telescope Array (CTA) is evolving towards the model of a public observatory. Handling, processing and archiving the large amount of data generated by the CTA instruments and deliverin…

<i>Swift</i>/XRT view of S5 0716+714 during a flare Open

A. Wierzcholska, H. Siejkowski · 2015

The blazar S5 0716+714 has been monitored in its flaring state between 2015 January 19 and February 22 with the Swift X-Ray Telescope (Swift/XRT). During this period, an exceptional flux level was observed in the X-ray range as well as at …

The effect of supernova rate on the magnetic field evolution in barred galaxies Open

K. Kulpa-Dybeł, Natalia Nowak, K. Otmianowska‐Mazur, M. Hanasz, H. Siejkowski , et al. · 2015

Context. For the first time, our magnetohydrodynamical numerical calculations provide results for a three-dimensional model of barred galaxies involving a cosmic-ray driven dynamo process that depends on star formation rates. Furthermore, …

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