NEWS

Research activities of the Centre in large involve student participation at various motivational grant programmes as well as organisation of informal seminars and workshops.  Students are encouraged to participate at international conferences and to get involved in solving research grants. For instance, students and researchers of the Centre were involved in the following selected activities in the period 2014-2017:

  

Participation in organizing RAGtime 19 meeting (LOC, SOC), October 2017

  • Gabriel Török; Podpora a rozvoj mezinárodní vědecké spolupráce v oblasti relativistické astrofyziky a přípravy rentgenových kosmických misí.
  • Gabriel Török; Restrictions on Spacetimes around Rotating Neutron Stars (Rossi X-ray Timing Explorer). Download here

Our talk at workshop From Quiescence to Outburst: when Microquasars go Wild (Porquerolles Island, France, September 2017

  • Pavel Bakala; Thin accretion disks of neutron stars influenced by the relativistic Poynting-Robertson effect

 

Our  posters at 16th HEAD Meeting (Sun Valley, Idaho, USA), August 2017

  • Andrea Kotrlová, Eva Šrámková, Gabriel Török, Zdeněk Stuchlík & Kateřina Goluchová; Super-Spinning Compact Objects and Rapid Variability of Galactic MicroquasarsDownload here
  • Eva Šrámková, Gabriel Török, Kateřina Goluchová, Jiří Horák & Martin Urbanec; Twin-Peak QPOs from Oscillating Torus with CuspDownload here
  • Gabriela Urbancová, Martin Urbanec, Gabriel Török, Zdeněk Stuchlík & Martin Blaschke; Some Properties of Orbital Motion in The Hartle-Thorne MetricDownload here
  • Gabriel Török, Kateřina Goluchová, Eva Šrámková, Jiří Horák, Pavel Bakala & Martin Urbanec; Simple Formula Relating Frequencies of Twin-Peak Quasiperiodic OscillationsDownload here
  • Kateřina Goluchová, Gabriel Török, Martin Urbanec, Eva Šrámková, Gabriela Urbancová; Innermost Stable Circular Orbits Around Rotating Compact StarsDownload here
  • Martin Urbanec; Pulsar braking: Time dependent moment of inertia? Download here

Our  poster at High Throughput X-ray Astronomy in the eXTP Era (Roma, Italy), February 2017

  • Kateřina Goluchová, Eva Šrámková, Andrea Kotrlová, Zdeněk Stuchlík, Gabriel Török;  Superspinning compact objects and forced resonance models of HF QPOs. 

Participation in organizing RAGtime 18 meeting (LOC, SOC), October 2016

  • Gabriel Török, Kateřina Goluchová, Martin Urbanec, Eva Šrámková, Karel Adámek, Gabriela Urbancová, Tomáš Pecháček, Pavel Bakala, Zdeněk Stuchlík, Jiří Horák, Jakub Juryšek; Models of Twin Peak Quasi-periodic Oscillations vs. Realistic Neutron Star Equation of State.
  • Gabriel Török, Kateřina Goluchová, Jiří Horák, Eva Šrámková, Martin Urbanec, Tomáš Pecháček, Pavel Bakala; Twin Peak Quasi-periodic Oscillations as Signature of Oscillating Cusp Torus.
  • Kateřina Goluchová, Gabriela Urbancová, Gabriel Török, Martin Urbanec; ISCO frequencies for rotating neutron stars - simple and accurate formulae.
  • Debora Lančová, Pavel Bakala, Kateřina Goluchová, Gabriel Török, Luigi Stella, Maurizio Falanga, Alexandra de Rosa, Vittorio de Falco; Computer simulation of trajectories of particles affected by general relativistic Poynting-Robertson effect.

Our  talks at GR21 – 21th International Conference on General Relativity and Gravitation (New York, USA), July 2016

  • Gabriel Török, Kateřina Goluchová, Martin Urbanec, Eva Šrámková, Karel Adámek, Gabriela Urbancová, Tomáš Pecháček, Pavel Bakala, Zdeněk Stuchlík, Jakub Juryšek; Constraining Models of Twin Peak Quasi-periodic Oscillations with Realistic Neutron Star Equation of State.
  • Kateřina Goluchová, Gabriela Urbancová, Gabriel Török, Martin Urbanec; ISCO frequencies for rotating neutron stars - simple and accurate formulae.

Our  posters at GR21 – 21th International Conference on General Relativity and Gravitation (New York, USA), July 2016

  • Eva Šrámková, Gabriel Török, Andrea Kotrlová, Kateřina Goluchová, Zdeněk Stuchlík, Pavel Bakala; Black hole spin inferred from orbital models of high-frequency quasi-periodic oscillations.
  • Kateřina Goluchová, Gabriel Török, Jiří Horák, Eva Šrámková, Martin Urbanec, Tomáš Pecháček, Pavel Bakala;  Twin peak QPOs: modulation of accretion disc and boundary layer radiation by oscillating cusp torus.
  • Andrea Kotrlová, Gabriel Török, Eva Šrámková, Zdeněk Stuchlík; Super-spinning compact objects and models of high-frequency quasi-periodic oscillations.

Participation in organizing RAGtime 17  (LOC, SOC), October 2015

  • Kateřina Goluchová, Konrad Kulczycki, Ronaldo Vieira, Zdeněk Stuchlík, Wlodek Kluzniak, Marek Abramowicz;  Hořava's quantum gravity illustrated by embedding diagrams of the Kehagias-Sfetsos spacetimes.
  • Kateřina Goluchová, Pavel Bakala, Gabriel Török, Vittorio de Falco, Maurizio Falanga, Luigi Stella, Eva Šrámková; The Light curves and spectra of an emitting ball moving in a Kerr spacetime under the influence of Poynting-Robertson efect.
  • Kateřina Goluchová, Gabriel Török, Martin Urbanec, Eva Šrámková, Karel Adámek, Gabriela Urbancová, Tomáš Pecháček, Pavel Bakala, Zdeněk Stuchlík, Jiří Horák, Jakub Juryšek; Confronting models of twin peak quasi-periodic oscillations: Mass and spin estimates fixed by neutron star equation of state.

Starting Activities

During the summer 2014 we started very comprehensive activities utilising, above all, the support in the frame of projects SGS/11/2013 'Analysis and Modelling of Astrophysical Observations of Relativistic Compact Stars' and OPVK CZ.1.07/2.2.00/28.0271 'Intensification of International, Interdisciplinary and Intersectoral Attitudes while Studying'. In cooperation with the experts from the Institute of Astronomy (Prague) and experts from several EU countries we organised, together with the research Centre of Theoretical Physics and Astrophysics, more than ten workshops focused primarily on involving the students in the active research work within the centres.

workshops

Due to the Centre's considerable orientation to international cooperation, an important part of making the involvement of students more attractive as well as efficient is the possibility for the students to take part in placements or study visits abroad. In 2014 there were two monthly study visits of a doctorand student Mgr. Urbancova at a prestigious American institution Oak Ridge National Laboratory.

stays2

There also were several short placements abroad. Among others. doctoral student Mgr. Goluchova visited a leading Polish institution CAMK. For 2015 three IGS projects have been prepared, these support cooperation with institutions abroad, where students can get directly involved.

conferencecentre

Last but not least, the programme of the Centre's activities also takes into account participation of excellent students from abroad both in the form of external cooperation with the SU students and directly in the frame of doctorand studies. Currently a half year stay is being prepared for a doctorand Vitorria de Falco from International Space Science Institute in Bern, Switzerland, which will focus on the problems of radiation from the vicinity of black holes and the mission of LOFT observatory.

 

Joomla templates by a4joomla