Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Ptak A"'
Autor:
Bachetti Matteo, Barret Didier, Boggs Steven E., Christensen Finn E., Craig William W., Fabian Andrew C., Forster Karl, Fürst Felix, Grefenstette Brian W., Hailey Charles J., Harrison Fiona A., Hornschemeier Ann E., Madsen Kristin K., Miller Jon M., Parker Michael, Ptak Andrew, Rana Vikram R., Risaliti Guido, Stern Daniel, Walton Dominic J., Webb Natalie A., Zhang William W.
Publikováno v:
EPJ Web of Conferences, Vol 64, p 06010 (2014)
We present the results of the first large program of broadband ULX observations with NuSTAR, XMM–Newton and Suzaku, yielding high-quality spectra and timing measurements from 0.3–30 keV in 6 ULXs, providing powerful information for understanding
Externí odkaz:
https://doaj.org/article/dac43513f8274376a6ed3dfc8b4b8a40
Autor:
Mariusz Sojka, Mariusz Ptak
Publikováno v:
Applied Sciences, Vol 12, Iss 15, p 7503 (2022)
Water temperature in rivers is the key property determining the biotic and abiotic processes occurring in these ecosystems. In many regions of the world, the significant lack of measurement data is a serious problem. This paper presents reconstructio
Externí odkaz:
https://doaj.org/article/6308cd7b8bd84a77a6189521899ef7c9
Autor:
Johannes Wilhelm, Mariusz Ptak, Fábio A. O. Fernandes, Konrad Kubicki, Artur Kwiatkowski, Monika Ratajczak, Marek Sawicki, Dariusz Szarek
Publikováno v:
Applied Sciences, Vol 10, Iss 13, p 4467 (2020)
Traumatic brain injury (TBI) is a major public health problem among children. The predominant causes of TBI in young children are motor vehicle accidents, firearm incidents, falls, and child abuse. The limitation of in vivo studies on the human brain
Externí odkaz:
https://doaj.org/article/c3ebb17c857e45cb892619706c6254c1
Autor:
Mariusz Ptak
Publikováno v:
Applied Sciences, Vol 9, Iss 5, p 1000 (2019)
Every year approximately 1.35 million people die as a consequence of road accidents. Almost 50% of road fatalities are vulnerable road users (VRUs). This research reviews the history of traffic safety for VRUs, presents an interesting insight into th
Externí odkaz:
https://doaj.org/article/60a0cfe6e64e4973ac78255718c0cac0
Publikováno v:
Applied Sciences, Vol 9, Iss 4, p 735 (2019)
Cellular materials have been used in many applications such as insulation, packaging, and protective gear. Expanded polystyrene has been widely used as energy-absorbing liner in helmets due to its excellent cost-benefit relation. This synthetic mater
Externí odkaz:
https://doaj.org/article/e9b831e53a8440d597279be808074473
Autor:
Konstantinos Kovlakas, Jeff J. Andrews, Ann Hornschemeier, Andrew Ptak, Andreas Zezas, A. Basu-Zych, Tassos Fragos, Bret D. Lehmer
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:4790-4810
Using the Chandra Source Catalog 2.0 and a newly compiled catalogue of galaxies in the local Universe, we deliver a census of ultraluminous X-ray source (ULX) populations in nearby galaxies. We find 629 ULX candidates in 309 galaxies with distance sm
Autor:
Lenka Ptak
Publikováno v:
Bohemistyka. :153-165
Przedmiotem niniejszego artykułu jest sandhi w języku czeskim, analiza zjawiska oparta na materiale wyekscerpowanym z czeskiego korpusu języka mówionego ORTOFON. Norma literackiego języka czeskiego na granicy międzywyrazowej dopuszcza wyłączn
Autor:
Timothy P.L. Roberts, Didier Barret, Natalie A. Webb, A. C. Fabian, Joern Wilms, F. Fürst, Ciro Pinto, D. Stern, Katja Pottschmidt, Peter Kretschmar, Matteo Bachetti, Matthew J. Middleton, Hannah P. Earnshaw, Andy Ptak, M. Heida, Dom Walton, Murray Brightman
Publikováno v:
Astronomy & Astrophysics, 2021, Vol.651, pp.A75 [Peer Reviewed Journal]
Astron.Astrophys.
Astron.Astrophys., 2021, 651, pp.A75. ⟨10.1051/0004-6361/202140625⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2021, 651, pp.A75. ⟨10.1051/0004-6361/202140625⟩
Astron.Astrophys.
Astron.Astrophys., 2021, 651, pp.A75. ⟨10.1051/0004-6361/202140625⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2021, 651, pp.A75. ⟨10.1051/0004-6361/202140625⟩
Ultra-luminous X-ray pulsars (ULXPs) provide a unique opportunity to study super-Eddington accretion. We present the results of a monitoring campaign of ULXP NGC 7793 P13. Over our four-year monitoring campaign with Swift, XMM-Newton, and NuSTAR, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85f281eebc69f8276fb824ad40403f90
http://dro.dur.ac.uk/34881/1/34881.pdf
http://dro.dur.ac.uk/34881/1/34881.pdf
Autor:
Ann Hornschemeier, Hermann Brunner, Andrea Merloni, Manami Sasaki, Andrea Santangelo, Frank Haberl, Mara Salvato, Konstantinos Kovlakas, Chandreyee Maitra, N. Vulic, Kirpal Nandra, E. Kyritsis, Jörn Wilms, Andy Ptak, A. Bogdan, Georg Lamer, Andreas Zezas, Tom Dwelly, Tong Liu, A. Basu-Zych
The $\it{eROSITA}$ Final Equatorial Depth Survey (eFEDS), completed during the calibration and performance verification phase of the $\it{eROSITA}$ instrument on $\it{Spectrum\, Roentgen\, Gamma}$, delivers data at and beyond the final depth of the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c3b1a87417846a413f6ff74bb7b9532
Publikováno v:
MIXDES
The paper presents the results of investigations of the spatial radiation patterns of selected solid state light sources. A system for measuring such characteristics, developed and constructed by the authors, is described. Spatial radiation patterns