Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Marek A. Abramowicz"'
Autor:
Marek A. Abramowicz, P. Chris Fragile
Publikováno v:
Living Reviews in Relativity, Vol 16, p 1 (2013)
This review covers the main aspects of black hole accretion disk theory. We begin with the view that one of the main goals of the theory is to better understand the nature of black holes themselves. In this light we discuss how accretion disks might
Externí odkaz:
https://doaj.org/article/811073d641e74f1ca3f7ccdc5b78cc10
Autor:
Jean-Pierre Lasota, Frederic H. Vincent, Thibaut Paumard, Maciek Wielgus, Guy Perrin, Eric Gourgoulhon, Marek A. Abramowicz
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 646, pp.A37. ⟨10.1051/0004-6361/202037787⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 646, pp.A37. ⟨10.1051/0004-6361/202037787⟩
Context. The Event Horizon Telescope (EHT) collaboration recently obtained first images of the surroundings of the supermassive compact object M87* at the center of the galaxy M87. Aims. We want to develop a simple analytic disk model for the accreti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9263a72c440db61ea9f000ee4cc027a8
https://hal.archives-ouvertes.fr/hal-03129508/document
https://hal.archives-ouvertes.fr/hal-03129508/document
Autor:
Eva Šrámková, J. Horak, Andrea Kotrlova, Debora Lančová, Kateřina Goluchová, Marek A. Abramowicz, Zdenek Stuchlik, Odele Straub, Gabriel Török
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 643, pp.A31. ⟨10.1051/0004-6361/201937097⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 643, pp.A31. ⟨10.1051/0004-6361/201937097⟩
We explore the influence of non-geodesic pressure forces that are present in an accretion disk on the frequencies of its axisymmetric and non-axisymmetric epicyclic oscillation modes. {We discuss its implications for models of high-frequency quasi-pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4109500c49f1203d052557f3203ac5fa
http://arxiv.org/abs/2008.12963
http://arxiv.org/abs/2008.12963
Publikováno v:
Scientific Reports
Scientific Reports, Nature Publishing Group, 2020, 10 (1), pp.7054. ⟨10.1038/s41598-020-63206-1⟩
Sci.Rep.
Sci.Rep., 2020, 10 (1), pp.7054. ⟨10.1038/s41598-020-63206-1⟩
Scientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
Scientific Reports, Nature Publishing Group, 2020, 10 (1), pp.7054. ⟨10.1038/s41598-020-63206-1⟩
Sci.Rep.
Sci.Rep., 2020, 10 (1), pp.7054. ⟨10.1038/s41598-020-63206-1⟩
Scientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
Our existence in the Universe resulted from a rare combination of circumstances. The same must hold for any highly developed extraterrestrial civilisation, and if they have ever existed in the Milky Way, they would likely be scattered over large dist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a42b9286379d3ce1ca763c80a3910d1
https://hal.archives-ouvertes.fr/hal-02116534/file/s41598-020-63206-1.pdf
https://hal.archives-ouvertes.fr/hal-02116534/file/s41598-020-63206-1.pdf
Publikováno v:
Phys.Rev.D
Phys.Rev.D, 2020, 102 (8), pp.084044. ⟨10.1103/PhysRevD.102.084044⟩
Phys.Rev.D, 2020, 102 (8), pp.084044. ⟨10.1103/PhysRevD.102.084044⟩
We discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordstrom spacetimes with distinct mass and charge parameters. These objects are spherically symmetric, but not reflection-symmetric, as the connect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::010119a5be665d52a13a38a1da9c1a5a
https://hal.archives-ouvertes.fr/hal-02939918
https://hal.archives-ouvertes.fr/hal-02939918
Autor:
Gabriel Török, Kateřina Goluchová, Marek A. Abramowicz, Eva Šrámková, Jiří Horák, Z. Stuchlík
Publikováno v:
Proceedings of the International Astronomical Union. 15:348-350
A strong quasi-periodic modulation has recently been revealed in the X-ray flux of the X-ray source XMMUJ134736.6+173403. The two observed twin-peak quasiperiodic oscillations (QPOs) exhibit a 3:1 frequency ratio and strongly support the evidence for
Autor:
Thibaut Paumard, A. A. Zdziarski, Maciek Wielgus, Odele Straub, Frederic H. Vincent, Marek A. Abramowicz, Guy Perrin
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 624, pp.A52. ⟨10.1051/0004-6361/201834946⟩
Astron.Astrophys.
Astron.Astrophys., 2019, 624, pp.A52. ⟨10.1051/0004-6361/201834946⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 624, pp.A52. ⟨10.1051/0004-6361/201834946⟩
Astron.Astrophys.
Astron.Astrophys., 2019, 624, pp.A52. ⟨10.1051/0004-6361/201834946⟩
Context. The properties of the accretion/ejection flow surrounding the supermassive central black hole of the Galaxy Sgr A* will be scrutinized by the new-generation instrument GRAVITY and the Event Horizon Telescope (EHT). Developing fast, robust, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89a4778686a2c71586e7dc103235168f
https://hal.archives-ouvertes.fr/hal-02058446/file/aa34946-18.pdf
https://hal.archives-ouvertes.fr/hal-02058446/file/aa34946-18.pdf
Autor:
Julia Becker Tjus, Marek A. Abramowicz
Publikováno v:
Urknall, Sterne, Schwarze Löcher ISBN: 9783662579121
Moglicherweise sind in der Entstehungsphase des Universums winzige Schwarze Locher entstanden. Ihre Entdeckung ware eine Sensation – doch bislang entziehen sich die hypothetischen Objekte allen Nachweisversuchen (aus Spektrum der Wissenschaft 5/201
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72c1778eab2d5fa251d10e6452baa346
https://doi.org/10.1007/978-3-662-57913-8_2
https://doi.org/10.1007/978-3-662-57913-8_2
Autor:
Jan Schee, Debora Lančová, Maciek Wielgus, Aleksander Sadowski, David Abarca, Ramesh Narayan, Włodek Kluźniak, Gabriel Török, Marek A. Abramowicz
We report on a new class of solutions of black hole accretion disks that we have found through three-dimensional, global, radiative magnetohydrodynamic simulations in general relativity. It combines features of the canonical thin, slim and thick disk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89060576de11cbc28e900cee177a1a49
Publikováno v:
The Astrophysical Journal. 908:179
Elliptical accretion disk models for tidal disruption events (TDEs) have been recently proposed and independently developed by two groups. Although these two models are characterized by a similar geometry, their physical properties differ considerabl