About: Hot-spot model for accretion disc variability as random process II. Mathematics of the power-spectrum break frequency     Goto   Sponge   NotDistinct   Permalink

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  • We develop a methodology for determining the regions of the model parameter space that can in principle reproduce a PSD shape with a given number and position of local peaks and breaks of the PSD slope. Given the vast space of possible parameters, it is an important requirement that the method is fast in estimating the PSD shape for a given parameter set of the model. We suggest that our general methodology can be useful for describing non-monotonic PSD profiles (such as the trend seen, on different scales, in exemplary cases of the high-mass X-ray binary Cygnus X-1 and the narrow-line Seyfert galaxy Ark 564). We adopt a model where these power spectra are reproduced as a superposition of several Lorentzians with varying amplitudes in the X-ray-band light curve. Our general approach can help in constraining the model parameters and in determining which parts of the parameter space are accessible under various circumstances
  • We develop a methodology for determining the regions of the model parameter space that can in principle reproduce a PSD shape with a given number and position of local peaks and breaks of the PSD slope. Given the vast space of possible parameters, it is an important requirement that the method is fast in estimating the PSD shape for a given parameter set of the model. We suggest that our general methodology can be useful for describing non-monotonic PSD profiles (such as the trend seen, on different scales, in exemplary cases of the high-mass X-ray binary Cygnus X-1 and the narrow-line Seyfert galaxy Ark 564). We adopt a model where these power spectra are reproduced as a superposition of several Lorentzians with varying amplitudes in the X-ray-band light curve. Our general approach can help in constraining the model parameters and in determining which parts of the parameter space are accessible under various circumstances (en)
Title
  • Hot-spot model for accretion disc variability as random process II. Mathematics of the power-spectrum break frequency
  • Hot-spot model for accretion disc variability as random process II. Mathematics of the power-spectrum break frequency (en)
skos:prefLabel
  • Hot-spot model for accretion disc variability as random process II. Mathematics of the power-spectrum break frequency
  • Hot-spot model for accretion disc variability as random process II. Mathematics of the power-spectrum break frequency (en)
skos:notation
  • RIV/67985815:_____/13:00426304!RIV14-GA0-67985815
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GC13-00070J)
http://linked.open...iv/cisloPeriodika
  • August
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 78098
http://linked.open...ai/riv/idVysledku
  • RIV/67985815:_____/13:00426304
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • accretion; black holes (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [57120E42913F]
http://linked.open...i/riv/nazevZdroje
  • Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 556
http://linked.open...iv/tvurceVysledku
  • Dovčiak, Michal
  • Karas, Vladimír
  • Czerny, B.
  • Goosmann, R. W.
  • Pecháček, Tomáš
http://linked.open...ain/vavai/riv/wos
  • 000323893500077
issn
  • 0004-6361
number of pages
http://bibframe.org/vocab/doi
  • 10.1051/0004-6361/201220339
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