Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Zycki, Piotr T."'
Autor:
You, Bei, Cao, Xinwu, Yan, Zhen, Hameury, Jean-Marie, Czerny, Bozena, Wu, Yue, Xia, Tianyu, Sikora, Marek, Zhang, Shuang-Nan, Du, Pu, Zycki, Piotr T.
Publikováno v:
Science 381, 961-964 (2023)
Accretion of material onto a black hole drags any magnetic fields present inwards, increasing their strength. Theory predicts that sufficiently strong magnetic fields can halt the accretion flow, producing a magnetically arrested disk (MAD). We analy
Externí odkaz:
http://arxiv.org/abs/2309.00200
Reprocessing of primary X-ray emission in the accretion disk of black hole X-ray binaries (BHXRBs) produces the reflection spectrum, with the characteristic Fe K$\alpha$ fluorescence line. Strong low frequency quasi-periodic oscillations (QPOs) are o
Externí odkaz:
http://arxiv.org/abs/2006.00678
Autor:
Martínez-Aldama, Mary Loli, Czerny, Bożena, Kawka, Damian, Karas, Vladimir, Panda, Swayamtrupta, Zajaček, Michal, Życki, Piotr T.
Quasars have been proposed as a new class of standard candles analogous to Supernovae, as their large redshift range and high luminosities make them excellent candidates. Reverberation mapping (RM) method enables to estimate the distance to the sourc
Externí odkaz:
http://arxiv.org/abs/1903.09687
We develop a Monte-Carlo code to compute the Compton scattered X-ray flux arising from a hot inner flow which undergoes Lense-Thirring precession. The hot flow intercepts seed photons from an outer truncated thin disk. A fraction of the Comptonized p
Externí odkaz:
http://arxiv.org/abs/1801.04028
We model the energy dependence of a quasi periodic oscillation (QPOs) produced by Lense-Thirring precession of a hot inner flow. We use a fully 3-dimensional Monte-Carlo code to compute the Compton scattered flux produced by the hot inner flow interc
Externí odkaz:
http://arxiv.org/abs/1610.07871
Autor:
Czerny, Bozena, Modzelewska, Justyna, Petrogalli, Francesco, Pych, Wojtek, Adhikari, Tek P., Zycki, Piotr T., Hryniewicz, Krzysztof, Krupa, Magdalena, Kurcz, Agnieszka, Nikolajuk, Marek
We propose a very simple physical mechanism responsible for the formation of the Low Ionization Line part of the Broad Line Region in Active Galactic Nuclei. It explains the scaling of the Broad Line Region size with the monochromatic luminosity, inc
Externí odkaz:
http://arxiv.org/abs/1409.7312
Publikováno v:
Astrophys.J. 588 (2003) 763-770
We analyze recent simultaneous Chandra/RXTE observations of the Seyfert 2 galaxy NGC 4945. The unprecedented spatial resolution of Chandra means we are able to separate the spectra of the nucleus, starburst and superwind regions, while the RXTE data
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301383
Autor:
Zycki, Piotr T.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 333 (2002) 800
The magnetic flare avalanches model of Poutanen & Fabian for X-ray variability of accreting black holes is combined with computations of vertical structure of illuminated accretion discs in hydrostatic equilibrium. The latter predict the existence of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0202366
Autor:
Zycki, Piotr T.
Publikováno v:
2001, AdSpR, 28, 281
I review observational data on X-ray energy spectra and variability of Seyfert 1 and Narrow Line Seyfert 1 galaxies, and compare them to black hole binary (BHB) systems. There seems to be greater similarity of time averaged properties (i.e. energy sp
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101066
Autor:
Zycki, Piotr T.
Publikováno v:
2001, ApSSS, 276, 169
Re-analysis of some archival X-ray data of black hole binaries in soft spectral states is presented. Results of detailed spectral fitting, including proper physical description of the X-ray reprocessed component, indicate that in most cases the soft,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011116