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2019•Odessa Astronomical PublicationsOpen access

THE ON- AND OFF-STATE GENERATIONS IN THE CASE OF THE THICK ACCRETION DISK AND UNDEFINED PRECESSION PERIOD. 3-D NUMERICAL HYDRODYNAMICAL SIMULATIONS IN ACCRETION DISK IN MICROQUASAR CYG X-1

Sergey Nazarenko

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Abstract

In the present work we have com-puted the thick accretion disk (the accretion disk withradiation pressure) for the case of undefined precessionover very long time (more than 14 precession periods).The calculations show that in this case the origin ofthe ON-states and OFF-states are strong irregularin time. The calculations also show that the jet’slaunches are taking place very suddenly over 7 ÷ 20minutes of the orbital time. The jet’s launches overOFF-states occurs discrete as it is observed in realmicroquasars.

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In the present work we have com-puted the thick accretion disk (the accretion disk withradiation pressure) for the case of undefined precessionover very long time (more than 14 precession periods).The calculations show that in this case the origin ofthe ON-states and OFF-states are strong irregularin time. The calculations also show that the jet’slaunches are taking place very suddenly over 7 ÷ 20minutes of the orbital time. The jet’s launches overOFF-states occurs discrete as it is observed in realmicroquasars.

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Available abstract

In the present work we have com-puted the thick accretion disk (the accretion disk withradiation pressure) for the case of undefined precessionover very long time (more than 14 precession periods).The calculations show that in this case the origin ofthe ON-states and OFF-states are strong irregularin time. The calculations also show that the jet’slaunches are taking place very suddenly over 7 ÷ 20minutes of the orbital time. The jet’s launches overOFF-states occurs discrete as it is observed in realmicroquasars.

Key concepts: Precession, Accretion disc, Physics, Accretion (finance), Astrophysics, Jet (fluid), Thick disk, Astronomy

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THE ON- AND OFF-STATE GENERATIONS IN THE CASE OF THE THICK ACCRETION DISK AND UNDEFINED PRECESSION PERIOD. 3-D NUMERICAL HYDRODYNAMICAL SIMULATIONS IN ACCRETION DISK IN MICROQUASAR CYG X-1 — Research Paper | ScholarLens