Research Center for Computational Physics and Data Processing

News

  • Proceedings of RAGtime 23-25 is now available for download here

Our Research

Research Centre for Computational Physics and Data Processing (Astrocomp) was established in 2013-2014 and it focuses on research in the area of complex modelling of astrophysical processes and observational data requiring complex linking of analytical and numerical methods. An emphasis is put on the development and utilization of advanced external as well as own software platforms benefiting from high power of currently available computers. Among the basic priorities of the Centre are interpretation of existing satellite and terrestrial observations of radiation of compact objects and participation in preparing future astrophysical satellite missions.

The Research centre is extending its activities since it has been founded in 2013 to follow the recent development in relevant research and important scientific results. Activities of the Centre closely follows rapid development of the High Performance Computing and utilization of supercomputers in scientific work. Since 2020 the Research Centre is a part of the Institute of Physics in Opava. The scientific results of the Centre are regularly published in peer-reviewed prestigious journals and presented at important international scientific conferences and meetings. The centre closely collaborates with scientist from well esteemed institutions from all around the world.

In parallel we also focus on applying the utilized methods in other areas of physics and applied physics, such as biophysics.

Research activities of Astrocomp are developed in the following areas of research:

  • Study, modelling and visualisation of astrophysical processes in the vicinity of compact objects (black holes, neutron and strange stars), analysis of astrophysical data
  • Modelling of the inner structure of compact objects and their equation of state
  • Exploration of detailed influence of structure and induced spacetime of compact objects on their inner physical processes and processes in their vicinity
  • Simulations of observed X-ray variability and spectra of accreting compact objects considering existing and future X-ray observatories
  • Utilisation of advanced algorithms and hardware for parallel and accelerated computations and data processing
  • Kaonium and dileptons production in e+e- annihilation data
  • GRRMHD simulations of accretion processes in the vicinity of compact objects
  • Processing of data from X-ray observatories and developing new X-ray cosmic missions

In 2019, in connection to preparation for establishing the Institute of Physics in Opava as an independent part of the Silesian University in Opava, activities of Astrocomp were extended in the area of computational astrophysics and numerical methods, and particle and experimental physics.

Starting in 2020 the research plan of the Centre is being extended and updated (actualised/modernised) every year in accordance with scientific developments across the world, and as a reaction to relevant scientific results obtained in the research Centre.

Selected Recent Publications

  • VINKOVIĆ Dejan, ČEMELJIĆ Miljenko. Inner dusty regions of protoplanetary discs – III. The role of non-radial radiation pressure in dust dynamics. Monthly Notices of the Royal Astronomical Society, stae1635 (2024)
    [OUP, PDF]
  • MATUSZKOVÁ Monika, TÖRÖK Gabriel, KLIMOVIČOVÁ Kateřina, HORÁK Jiří, STRAUB Odele, ŠRÁMKOVÁ Eva, LANČOVÁ Debora, URBANEC Martin, URBANCOVÁ Gabriela, KARAS Vladimír. Accretion tori around rotating neutron stars — Paper II: Oscillations and precessions. eprint arXiv:2403.16231 (2024)
    [NASA ADS, PDF]
  • MATUSZKOVÁ Monika, TÖRÖK Gabriel, LANČOVÁ Debora, KLIMOVIČOVÁ Kateřina, HORÁK Jiří, URBANEC Martin, ŠRÁMKOVÁ Eva, STRAUB Odele, URBANCOVÁ Gabriela, KARAS Vladimír. Accretion tori around rotating neutron stars — Paper I: Structure, shape and size. eprint arXiv:2403.16226 (2024)
    [NASA ADS, PDF]
  • KAYANIKHOO Fatemeh, ČEMELJIĆ Miljenko, WIELGUS Maciek, KLUŹNIAK Włodek. Energy distribution and substructure formation in astrophysical MHD simulations. Monthly Notices of the Royal Astronomical Society, Volume 527, Issue 4, pp.10151-10167 (2024)
    [NASA ADS, PDF]
  • KAYANIKHOO Fatemeh, ČEMELJIĆ Miljenko, WIELGUS Maciek, KLUŹNIAK Włodek. Energy dissipation in astrophysical simulations: results of the Orszag-Tang test problem. Proceedings of RAGtime 23-25 (2023)
    [PDF]
  • KLIMOVIČOVÁ Kateřina, LANČOVÁ Debora, TÖRÖK Gabriel. Signal from neutron star obscured by oscillating accretion torus. Proceedings of RAGtime 23-25 (2023)
    [PDF]
  • ČEMELJIĆ Miljenko, VARELA Jacobo. Aurora on pulsar planets. Proceedings of RAGtime 23-25 (2023)
    [PDF]
  • KARAKONSTANTAKIS Angelos, LANČOVÁ Debora, ČEMELJIĆ Miljenko. General Relativistic Magnetohydrodynamic Simulations of Accreting Tori: Resolution Study. Proceedings of RAGtime 23-25 (2023)
    [PDF]
  • KARAS Vladimír, KLIMOVIČOVÁ Kateřina, LANČOVÁ Debora, ŠTOLC Marcel, SVOBODA Jiří, TÖRÖK Gabriel, MATUSZKOVÁ Monika, ŠRÁMKOVÁ Eva, ŠPRŇA René, URBANEC Martin. Timing of accreting neutron stars with future X-ray instruments: towards new constraints on dense matter equation of state. Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 53, no. 4, p. 175-190. (2023)
    [NASA ADS, PDF]
  • LICHARD Peter. New narrow resonance in the e+e–→ϕ η data by the Belle collaboration. Physical Review D, Volume 108, Issue 9, article id.092005. (2023)
    [NASA ADS, PDF]
  • MISHRA Ruchi, ČEMELJIĆ Miljenko, VARELA Jacobo, FALANGA Maurizio. Auroras on planets around pulsars. The Astrophysical Journal Letters, Volume 959, Issue 1, id.L13, 6 pp. (2023)
    [NASA ADS, PDF]
  • ČEMELJIĆ Miljenko, BRUN Allan Sacha. Trends in torques acting on the star during a star-disk magnetospheric interaction. Astronomy & Astrophysics, Volume 679, id.A16, 14 pp. (2023)
    [NASA ADS, PDF]
  • ČEMELJIĆ Miljenko, KLUŹNIAK Włodek, PARTHASARATHY Varadarajan. Magnetically threaded accretion disks in resistive magnetohydrodynamic simulations and asymptotic expansion. Astronomy & Astrophysics, Volume 678, id.A57, 16 pp. (2023)
    [NASA ADS, PDF]
  • MISHRA Ruchi, ČEMELJIĆ Miljenko, KLUŹNIAK Włodek. Accretion disc backflow in resistive MHD simulations. Monthly Notices of the Royal Astronomical Society, Volume 523, Issue 3, pp.4708-4719 (2023)
    [NASA ADS, PDF]
  • VIEIRA Ronaldo S. S., KLUŹNIAK Włodek. Astrophysical cloaking of a naked singularity. Monthly Notices of the Royal Astronomical Society, Volume 523, Issue 3, pp.4615-4623 (2023)
    [NASA ADS, PDF]
  • KAYANIKHOO Fatemeh, KAPUSTA Mateusz, ČEMELJIĆ Miljenko. The maximum mass and deformation of rotating strange quark stars with strong magnetic fields. eprint arXiv:2305.03055 (2023)
    [NASA ADS, PDF]
  • BAKALA Pavel, BAKALOVÁ Alena, LA PLACA Riccardo, FALANGA Maurizio, STELLA Luigi. Extreme amplification regimes of the Schwarzschild gravitational lens. Astronomy & Astrophysics, Volume 673, id.A164, 13 pp. (2023)
    [NASA ADS, PDF]
  • MOSALLANEZHAD Amin, Bu De-Fu, ČEMELJIĆ Miljenko, ZERAATGARI Fatemeh Zahra, HAI Yang, MEI Liquan. Numerical Simulation of Hot Accretion Flow around Bondi Radius. The Astrophysical Journal, Volume 939, Issue 1, id.12, 12 pp. (2022)
    [NASA ADS, PDF]
  • VRBA Jaroslav, URBANEC Martin, STUCHLÍK Zdeněk, MILLER John C. Trapping of null geodesics in slowly rotating spacetimes. The European Physical Journal C, Volume 80, Issue 11 (2022).
    [NASA ADS, PDF]
  • LANČOVÁ Debora, YILMAZ Anastasiya, WIELGUS Maciek, DOVČIAK Michal, STRAUB Odele, TÖRÖK Gabriel. Spectra of Puffy Accretion Discs: the kynbb Fit. submitted to the AN as proceedings of XMM-Newton 2022 Science Workshop (2022).
    [arXiv, PDF]
  • ABRAMOWICZ Marek, BEJGER Michał, UDALSKI Andrzej, WIELGUS Maciek. A Robust Test of the Existence of Primordial Black Holes in Galactic Dark Matter Halos. The Astrophysical Journal Letters, Volume 935, Number 2 (2022).
    [IOP, PDF]
  • WIELGUS Maciek, LANČOVÁ Debora, STRAUB Odele, KLUŹNIAK Włodek, NARAYAN Ramesh, ABARCA David, RÓŻAŃSKA Agata, VINCENT Frederic, TÖRÖK Gabriel, ABRAMOWICZ Marek A. Observational properties of puffy disks: radiative GRMHD spectra of mildly sub-Eddington accretion. Monthly Notices of the Royal Astronomical Society, stac1317 (2022).
    [NASA ADS, PDF]
  • TÖRÖK Gabriel, KOTRLOVÁ Andrea, MATUSZKOVÁ Monika, KLIMOVIČOVÁ Kateřina, LANČOVÁ Debora, URBANCOVÁ Gabriela, ŠRÁMKOVÁ Eva. Simple analytic formula relating the mass and spin of accreting compact objects to their rapid X-ray variability. The Astrophysical Journal, Volume 929, Number 1 (2022).
    [NASA ADS, PDF]
  • STUCHLÍK Zdeněk, KLIMOVIČOVÁ Kateřina, SCHEE Jan, TÖRÖK Gabriel, KOTRLOVÁ Andrea. Comparison of the Hartle-Thorne Model of Neutron Stars with its Kerr Approximation by using Resonant Switch Model. Acta Astronomica, vol 71, no 4, p. 311-341 (2021).
    [NASA ADS, PDF]
  • MUZALEVSKII Ivan A., BEZBAKH Andrey A., NIKOLSKII E. Yu., CHUDOBA Vratislav, KRUPKO S. A., … . Resonant states in 7H. I. Experimental studies of the 2H(8He,3He) reaction. Physical Review C, Volume 103, Issue 4, article id.044313 (2021).
    [NASA ADS, PDF]
  • VINCENT Frederic H., WIELGUS, Maciek, ABRAMOWICZ Marek A., GOURGOULHON Eric, LASOTA Jean-Pierre, PAUMARD Thibaut, PERRIN Guy. Geometric modeling of M87* as a Kerr black hole or a non-Kerr compact object. Astronomy & Astrophysics (2021).
    [NASA ADS, PDF]
  • LIU Fukun K., CAO Chengyi Y., ABRAMOWICZ Marek A., WIELGUS Maciek, CAO Rong, ZHOU Zhongyuan Q. Elliptical Accretion Disk as a Model for Tidal Disruption Events. The Astrophysical Journal, Volume 908, Issue 2 (2021).
    [NASA ADS, PDF]
  • ŠRÁMKOVÁ Eva, GOLUCHOVÁ Kateřina, TÖRÖK Gabriel, ABRAMOWICZ Marek A., STUCHLÍK Zdeněk, HORÁK Jiří. Exploring the X-ray universe via timing: mass of the active galactic nucleus black hole XMMUJ134736.6+173403. Cambridge University Press (2021).
    [NASA ADS, PDF]
  • LICHARD, Peter. Pionium as a source of false events in the K → πν¯ν decays. Physical Review D 102, 113005 (2020).
    [NASA ADS, PDF]
  • LICHARD, Peter. Possible manifestation of the 2p pionium in particle physics processes. Physical Review D, (2020).
    [NASA ADS, PDF]
  • KOTRLOVÁ Andrea, ŠRÁMKOVÁ Eva, TÖRÖK Gabriel, GOLUCHOVÁ Kateřina, HORÁK Jiří, STRAUB Odele, LANČOVÁ Debora, STUCHLÍK Zdeněk, ABRAMOWICZ Marek. Models of high-frequency quasi-periodic oscillations and black hole spin estimates in Galactic microquasars. Astronomy & Astrophysics (2020).
    [NASA ADS, PDF]
  • WIELGUS Maciek, HORÁK Jiří, VINCENT Frederic, ABRAMOWICZ Marek. Reflection-asymmetric wormholes and their double shadows. Physical Review D, 102, 084044 (2020).
    [NASA ADS, PDF]
  • LICHARD Peter. Manifestation of kaonium in the e+ e− → K+ K− process.  Physical Review D, Volume 101, Issue 11, article id.111501 (2020).
    [NASA ADS, PDF]
  • DE FALCO Vittorio, BAKALA Pavel. Stable attractors in the three-dimensional general relativistic Poynting-Robertson effect. Physical Review D, Volume 101, Issue 2, article id. 024025 (2020).
    [NASA ADS, PDF]
  • ABRAMOWICZ Marek, BEJGER Michal, GOURGOULHON Eric, STRAUB Odele. A Galactic centre gravitational wave Messenger. Scientific Reports, 10, 7054, (2020).
    [NASA ADS, PDF]
  • BAKALA Pavel, DOČEKAL Jan, TUROŇOVÁ Zuzana. Habitable Zones around Almost Extremely Spinning Black Holes (Black Sun Revisited). The Astrophysical Journal, Volume 889, Issue 1, article id. 41 (2020).
    [NASA ADS, PDF]
  • LA PLACA Riccardo, BAKALA Pavel, STELLA Luigi, FALANGA Maurizio. A New Approximation of Photon Geodesics in Schwarzschild Spacetime. Research Notes of the American Astronomical Society, Volume 3, Issue 7, article id. 99 (2019).
    [NASA ADS, PDF]
  • BAKALA Pavel, DE FALCO Vittorio, BATTISTA Emmanuele, GOLUCHOVÁ Kateřina, LANČOVÁ Debora, FALANGA Maurizio, STELLA Luigi. Three-dimensional general relativistic Poynting-Robertson effect. II. Radiation field from a rigidly rotating spherical source. Physical Review D, Volume 100, Issue 10, article id. 104053 (2019).
    [NASA ADS, PDF]
  • LANČOVÁ Debora, ABARCA David, KLUŹNIAK Wƚodek, WIELGUS Maciek, SĄDOWSKI Aleksandr, NARAYAN Ramesh, SCHEE Jan, TÖRÖK Gabriel, ABRAMOWICZ Marek. Puffy accretion disks: sub-Eddington, optically thick, and stable. The Astrophysical Journal Letters, Volume 884, L37, eprint arXiv:1908.08396.
    [NASA ADS, PDF]
  • TÖRÖK Gabriel, GOLUCHOVÁ Kateřina, ŠRÁMKOVÁ Eva, URBANEC Martin, STRAUB Odele. Time-scale of twin-peak quasi-periodic oscillations and mass of accreting neutron stars. Monthly Notices of the Royal Astronomical Society, Volume 488, Issue 3, p.3896-3903.
    [NASA ADS, PDF]
  • DE ROSA Alessandra, UTTLEY Phil, GOU LiJun, …, BAKALA Pavel, ŠRÁMKOVÁ Eva, STUCHLÍK Zdeněk, TÖRÖK Gabriel, URBANEC Martin. Accretion in strong field gravity with eXTP. Science China Physics, Mechanics & Astronomy, Volume 62, Issue 2, article id. 29504.
    [NASA ADS, PDF]
  • URBANCOVÁ Gabriela, URBANEC Martin, TÖRÖK Gabriel, STUCHLÍK Zdeněk, BLASCHKE Martin, MILLER John C. Epicyclic oscillations in the Hartle-Thorne external geometry. The Astrophysical Journal, Volume 877, Issue 2, article id. 66, 17 pp. (2019), eprint arXiv:1905.00730.
    [NASA ADS, PDF]
  • DE ROSA Alessandra, UTTLEY Phil, GOU LiJun, …, BAKALA Pavel, ŠRÁMKOVÁ Eva, STUCHLÍK Zdeněk, TÖRÖK Gabriel, URBANEC Martin. Accretion in strong field gravity with eXTP. Science China Physics, Mechanics & Astronomy, Volume 62, Issue 2, article id. 29504.
    [NASA ADS, PDF]
  • WATTS Anna L., YU WenFei, POUTANEN Juri, …, BAKALA Pavel, ŠRÁMKOVÁ Eva, URBANEC Martin, TÖRÖK Gabriel. Dense matter with eXTP. Science China Physics, Mechanics & Astronomy, Volume 62, Issue 2, article id. 29503.
    [NASA ADS, PDF]
  • GOLUCHOVÁ Kateřina, TÖRÖK Gabriel, ŠRÁMKOVÁ Eva, ABRAMOWICZ Marek, STUCHLÍK Zdeněk, HORÁK Jiří. Mass of the active galactic nucleus black hole XMMUJ134736.6+173403. Astronomy & Astrophysics, 2019, Volume 622, id.L8.
    [NASA ADS, PDF]