# Dr. Audrey Trova

ZARM, University of Bremen

Am Fallturm

28359 Bremen

Germany

phone:

+49 0421 218-57856

email:

audrey.trova(at)zarm.uni-bremen.de

## Research Interests

One of my primary interest was about the structure of thin massive discs. This research was mainly theoretical and centered on the self-gravitational potential of such discs, meaning the gravitational force produced by the disc itself. The structure and stability of these discs are generally due to the effect of a central source; however, in some systems the self-gravity force produced by the disc itself can be significant and important in the dynamical balance. This is the case for sufficiently massive and/or extended discs, present, for instance, in the first stage of the stellar formation. My following interest went to thick accretion discs which can be relevant to understand the central power sources in Active Galactic Nuclei or at the early stage of star formation. They can also be involved in the generation of bipolar outflows or jets. Thus, nowadays I am working on equilibrium configurations of charged perfect fluid of (self-gravitating) accretion discs in rotation embedded in a magnetic field. First studies have been done in the Newtonian regime and more recently in the General Relativity framework.## Scientific Career

- 2017 - present: Post-Doctorand at ZARM, Center of Applied Space Technology and Microgravity, University of Bremen, Bremen,Germany
- 2014 - 2017: Post-Doctorand at the Relativity group of the Astronomical Institute of the Academy of Sciences, Prague, Czech Republic
- 2010 - 2013: PhD student at the Astrophysical Laboratory of Bordeaux, Bordeaux, France

## Contributions at Conferences

### Oral

- "Configurations of charged fluid around black hole", GR22 International Conference on General Relativity and Gravitation, Valencia, Spain, July 7-12, 2019
- "Charged fluid near black hole" DPG Spring Meeting of the Matter and Cosmos Section (SMuK), Munich, Germany, April 17-22, 2019
- "Accretion disk: theory and model" Networking Workshop, Fintel, Germany, March 3-8, 2019
- "Equilibrium of charged perfect fluid around a Kerr black hole"RAGtime20, Opava, Czech Republic, October 15-19, 2018
- "Equilibrium of charged perfect fluid around a Kerr black hole" EWASS, Liverpool, United Kingdom, April 3-6, 2018
- "Equilibrium of charged perfect fluids in rotation around a rotating compact object" DPG Spring Meeting of the Matter and Cosmos Section (SMuK), Würzburg, Germany, March 19-23, 2018
- "Influence of self-gravity on equilibrium figures of gaseous tori" Models of Gravity: Black Holes, Neutron Stars and the Structure of Spacetime, Oldenburg, Germany, October 4-7, 2016
- "Self-gravitating charged tori embedded in spherical gravitational and dipolar magnetic field" SF2A (National Meeting), Toulouse, France, June 2-5, 2015
- "Self-gravity in thin discs: extension of Paczynski's approximation" 11th INTEGRAL/BART Workshop, Karlovy Vary, Czech Republic, April 22- 25, 2014
- "Vertical self-gravity in discs and outer edge effects" Accreting Relativistic Compact Objects and their Environment, Prague, Czech Republic, November 22 - December 1, 2013
- "The softening length in 3D self-gravitating fluids" Gravasco, Dynamics and Kinetic Theory of Selfgravitating systems: International Workshop, Paris, France, November 4-8, 2013
- "Approximate solution for the gravitational potential of thin discs" SF2A (National Meeting), Nice, France, June 5-8, 2012

### Posters

- "Charged fluid around Kerr black hole" Accretion in Strong Gravity, Bad Honnef, Germany, February 4-8, 2019
- "Equilibrium structures of fluid charged tori around a compact object in rotation" 29th International Texas Symposium on Relativistic Astrophysics, Cape Town, South Africa, December 3-9, 2017
- "Equilibrium configurations of rotating magnetized self-gravitating tori: influence of selfgravity" IAU Symposium: New frontiers in black hole astrophysics, Ljubljana, September 12-16, 2016
- "New prescription for the softening length in discs simulations" Planet Formation and Evolution, Kiel, Germany, Sept. 8-10, 2014
- "Two useful formulas for thin disc models with self-gravity" Planet Formation and Evolution, Munich, Germany, Sept. 3-7, 2012
- "A new expression for the Newtonian potential of vertically homogeneous discs" IPF (Local Meeting), Bordeaux, France, Dec.19, 2011
- "A general solution of the Poisson and Laplace equations for homogeneous, phi-invariant celestial bodies from a line, kernel-regularized integral" SF2A (National Meeting), Paris, France, June 20-23, 2011

## Publications

- J. M. Huré, A. Trova, V. Karas, and C. Lesca: "Interior potential of a toroidal shell from pole values" Mon. Not. Roy. Astron. Soc. 486, 5656 (2019)
- K. Schroven, A. Trova, E. Hackmann and C. Lämmerzahl"Charged fluid structures around a rotating compact object with a magnetic dipole field" Phys. Rev. D 98, 023017 (2018)
- A. Trova, K. Schroven, E. Hackmann, V. Karas, J. Kovář and P. Slaný: "Equilibrium configurations of a charged fluid around a Kerr black hole" Phys. Rev. D 97, 104019 (2018)
- J. Kovář, P. Slaný, Z. Stuchlík, V. Karas and A. Trova: "Analytical solution for charged fluid pressure profiles - circulation in combined electromagnetic field" In Proceedings of RAGtime 17-19: Workshops on black holes and neutron stars, pp. 119 (2017)
- V. Karas, A. Trova, and J. Kovář: " Self-gravitating fluid tori with charge" In AAS/High Energy Astrophysics Division, Vol. 16 of AAS/High Energy Astrophysics Division, pp 109.11 (2017)
- A. Trova, V. Karas, P. Slaný and J. Kovár: "Influence of self-gravity on the equilibrium structures of magnetized tori" In IAU Symposium, Vol. 324 of IAU Symposium, pp. 253 (2017)
- A. Trova, V. Karas, P. Slaný and J. Kovář: "Electrically charged matter in permanent rotation around magnetized black holes: A toy model for self-gravitating fluid tori. Astrophys. J. Suppl. 226, 12 (2016)
- J. Kovář, P. Slaný, C. Cremaschini, Z. Stuchlík, V. Karas and A. Trova: "Charged perfect fluid tori in strong central gravitational and dipolar magnetic fields" Phys. Rev. D 93, 124055 (2016)
- A. Trova, V. Karas, P. Slaný and J. Kovář: "Equilibrium of self-gravitating tori in spherical gravitational and dipolar magnetic fields" In F. Martins, S. Boissier, V. Buat, L. Cambrésy, and P. Petit (eds.): SF2A-2015: Proceedings of the Annual Meeting of the French Society of Astronomy and Astrophysics, pp. 179 (2015)
- J.-M. Huré and A. Trova: "A truly Newtonian softening length for disc simulations*quot; Mon. Not. Roy. Astron. Soc. 447, 1866 (2015)
- J. Kovář, P. Slaný, C. Cremaschini, Z. Stuchlík, V. Karas and A. Trova: "Electrically charged matter in rigid rotation around magnetized black hole" Phys. Rev. D 90, 044029 (2014)
- J.-M. Huré, A. Trova and F. Hersant: "Self-gravity in curved mesh elements" Celest. Mech. Dyn. Astron. 118, 229 (2014)
- A. Trova, J.-M. Huré and F. Hersant: "Self-gravity in thin discs and edge effects: an extension of Paczynski's approximation" Astron. Astrophys. 563, A132 (2014)
- A. Trova, J.-M. Huré and F. Hersant: "The potential of discs from a 'mean Green function'" Mon. Not. Roy. Astron. Soc. 424, 2635 (2012)
- A. Trova, J.-M. Huré and F. Hersant: "Approximate solution for the gravitational potential of thin disks" In S. Boissier, P. de Laverny, N. Nardetto, R. Samadi, D. Valls-Gabaud, and H. Wozniak (eds.): SF2A-2012: Proceedings of the Annual Meeting of the French Society of Astronomy and Astrophysics, pp.159 (2012)
- A. Trova, J.-M. Huré and F. Hersant: "The gravitational potential of axially symmetric bodies from a regularized green kernel" In G. Alecian, K. Belkacem, R. Samadi, and D. Valls-Gabaud (eds.): SF2A-2011: Proceedings of the Annual Meeting of the French Society of Astronomy and Astrophysics, pp. 685 (2011)

# Contact

Privatdozentin Dr. rer. nat. Eva Hackmann

+49 421 218-57862

Email: eva.hackmann

Privatdozent Dr. rer. nat. Volker Perlick

+49 421 218-57933

Email: volker.perlick