A conceptual design of a soil database for a geographical information system     

R. Norberto Fern´ndez  Marek Rusinkiewicz 《International journal of geographical information science》2013,27(6):525-539

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Dependence of the orbital modulation of X-rays from 4U 1820–303 on the accretion rate     

Andrzej A. Zdziarski  Marek Gierli&#;ski  Linqing Wen  Zuzanna Kostrzewa 《Monthly notices of the Royal Astronomical Society》2007,377(3):1017-1023

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Accretion in Strong Gravity: from Galactic to Supermassive Black Holes     

Chris Done  Marek Gierliński 《Astrophysics and Space Science》2005,300(1-3):167-175

The galactic black hole binary systems give an observational template showing how the accretion flow changes as a function of increasing mass accretion rate, or L/L_Edd. These data can be synthesised with theoretical models of the accretion flow to give a coherent picture of accretion in strong gravity, in which the major hard-soft spectral transition is triggered by a change in the nature and geometry of the inner accretion flow from a hot, optically thin plasma to a cool, optically thick accretion disc. However, a straightforward application of these models to AGN gives clear discrepancies in overall spectral shape. Either the underlying accretion model is wrong, despite its success in describing the Galactic systems and/or there is additional physics which breaks the simple scaling from stellar to supermassive black holes.  相似文献   

GX 339−4: the distance, state transitions, hysteresis and spectral correlations     

Andrzej A. Zdziarski  Marek Gierli&#;ski  Joanna Miko&#;ajewska  Grzegorz Wardzi&#;ski  David M. Smith  B. Alan Harmon  Shunji Kitamoto 《Monthly notices of the Royal Astronomical Society》2004,351(3):791-807

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Patterns of energy-dependent variability from Comptonization     

Marek Gierli&#;ski  Andrzej A. Zdziarski 《Monthly notices of the Royal Astronomical Society》2005,363(4):1349-1360

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The Eccentric Eclipsing Binary V889 Aquilae     

Marek Wolf  Roger Diethelm  Miloslav Zejda 《Astrophysics and Space Science》2005,296(1-4):109-112

Several new times of minimum light recorded with photoelectric or CCD means have been gathered for the eccentric eclipsing binary V889 Aql (P = 11.1 days, e = 0.37). Its O–C diagram is presented, and improved elements of the apsidal motion and the light-time effect (LITE) are given. We found a long apsidal motion period of about 24 400 ± 2400 years and a period of the third body of about 52 ± 2 years.  相似文献   

Analysing the atolls: X-ray spectral transitions of accreting neutron stars     

Jeanette Gladstone  Chris Done  Marek Gierli&#;ski 《Monthly notices of the Royal Astronomical Society》2007,378(1):13-22

We systematically analyse all the available X-ray spectra of disc accreting neutron stars (atolls and millisecond pulsars) from the RXTE data base. We show that while all these have similar spectral evolution as a function of mass accretion rate, there are also subtle differences. There are two different types of hard/soft transition, those where the spectrum softens at all energies, leading to a diagonal track on a colour–colour diagram, and those where only the higher energy spectrum softens, giving a vertical track. The luminosity at which the transition occurs is correlated with this spectral behaviour, with the vertical transition at   L / L _Edd∼ 0.02  while the diagonal one is at ∼0.1. Superimposed on this is the well-known hysteresis effect, but we show that classic, large-scale hysteresis occurs only in the outbursting sources, indicating that its origin is in the dramatic rate of change of mass accretion rate during the disc instability. We show that the long-term mass accretion rate correlates with the transition behaviour, and speculate that this is due to the magnetic field being able to emerge from the neutron star surface for low average mass accretion rates. While this is not strong enough to collimate the flow except in the millisecond pulsars, its presence may affect the inner accretion flow by changing the properties of the jet.  相似文献   

International Symposium “Geology of Reefs”     

Tadeusz Marek Peryt 《《幕》》2005,28(4):297-297

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The influence of the limestone-quarry Čertovy schody (Czech Republic) on the precipitation chemistry and atmospheric deposition     

Jitka &#x;pi kov  Irena Dobe&#x;ov  Marek Vach  Petr Sk&#x;ivan  Martin Mihaljevi   Milo&#x; Burian 《Chemie der Erde / Geochemistry》2008,68(1):105-115

Atmospheric precipitation samples were collected in the Bohemian Karst (30 km SW from Prague, Czech Republic) at six localities in the vicinity of the limestone-quarry Čertovy schody during years 1996–2003. Samples were analyzed for major components (Na⁺, K⁺, Mg²⁺, Ca²⁺, F⁻, Cl⁻, NO₃⁻, HCO₃⁻, SO₄²⁻) and trace metals (Cu, Mn, Fe, Zn, Pb, Be, As, Sr, Cd, Al, Cr). Deposition fluxes were calculated from more than 10 000 elemental analyses of samples collected monthly. The fluxes of monitored substances show temporal and spatial variability. The most marked attribute is the strong affection by local emission sources confirmed by the investigation of seasonal variability, temporal trend and correlation analysis.  相似文献   

Seismic basement in Poland     

Marek Grad  Marcin Polkowski 《International Journal of Earth Sciences》2016,105(4):1199-1214

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