Zobrazeno 1 - 10
of 160
pro vyhledávání: '"Kostić, U."'
Autor:
Jankovič, T., Gomboc, A., Wyrzykowski, Ł., Kostić, U., Karlica, M., Larma, M., Petrushevska, T., Bronikowski, M., Jabłońska, M., Kaczmarek, Z.
Astrometric microlensing events occur when a massive object passes between a distant source and the observer, causing a shift of the light centroid. The precise astrometric measurements of the Gaia mission provide an unprecedented opportunity to dete
Externí odkaz:
http://arxiv.org/abs/2412.14844
In this article we model a Global Navigation Satellite System (GNSS) in a Schwarzschild space-time, as a first approximation of the relativistic geometry around the Earth. The closed time-like and scattering light-like geodesics are obtained analytic
Externí odkaz:
http://arxiv.org/abs/1003.5836
Publikováno v:
AIP Conference Proceedings 1205 (2010) 30-40
The discovery that the Galactic centre emits flares at various wavelengths represents a puzzle concerning their origin, but at the same time it is a relevant opportunity to investigate the environment of the nearest super-massive black hole. In this
Externí odkaz:
http://arxiv.org/abs/0908.0117
Publikováno v:
Proceedings of Relativistic Astrophysics Legacy and Cosmology - Einstein's, ESO Astrophysics Symposia, Springer-Verlag Berlin Heidelberg, 2008, p. 149
Clumps of material orbiting a black hole may be disturbed, somewhat like comets in the Kuiper belt, to relatively small periastron orbits. Each periastron passage changes the orbital parameters in such a way that the orbit becomes more and more eccen
Externí odkaz:
http://arxiv.org/abs/0903.0161
Publikováno v:
Relativistic Astrophysics Legacy and Cosmology - Einstein's, ESO Astrophysics Symposia, Springer-Verlag Berlin Heidelberg, 2008, p. 141
We present the telltale signature of the tidal capture and disruption of an object by a massive black hole in a galactic centre. As a result of the interaction with the black hole's strong gravitational field, the object's light curve can flare-up wi
Externí odkaz:
http://arxiv.org/abs/0903.0164
Publikováno v:
AIP Conf.Proc.1126:367-369,2009
Low Mass X-ray Binaries (LMXBs) with either a black hole or a neutron star show power spectra characterised by Quasi Periodic Oscillations (QPOs). Twin peak high frequency QPOs are characterised by frequencies that are typical for matter orbiting wit
Externí odkaz:
http://arxiv.org/abs/0902.2134
Publikováno v:
EAS Publications Series 44 (2011) 125-126
Tidal disruption by massive black holes is a phenomenon, during which a large part of gravitational energy can be released on a very short time-scale. The time-scales and energies involved during X-ray and IR flares observed in Galactic centre sugges
Externí odkaz:
http://arxiv.org/abs/0902.2122
Publikováno v:
Astronomy & Astrophysics 496 (2009) 307-315
The compact radio source Sagittarius A (Sgr A) at the centre of our Galaxy harbours a supermassive black hole, whose mass has been measured from stellar orbital motions. Sgr A is therefore the nearest laboratory where super-massive black hole astroph
Externí odkaz:
http://arxiv.org/abs/0901.3447
Publikováno v:
Astron.Astrophys.487:527-532,2008
Low-mass satellites, like asteroids and comets, are expected to be present around the black hole at the Galactic center. We consider small bodies orbiting a black hole, and we study the evolution of their orbits due to tidal interaction with the blac
Externí odkaz:
http://arxiv.org/abs/0809.1783
Publikováno v:
AIPConf.Proc.861:566-571,2006
In recent years the case for the presence of 3-4 10^6 M_sun black hole in our Galactic Center has gained strength from results of stellar dynamics observations and from the detection of several rapid X-ray and IR flares observed in the Sagittarius A*
Externí odkaz:
http://arxiv.org/abs/0708.2696