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Showing 1 to 6 of 6 for “"Sagittarius A*"”.
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Heart of darkness
… suspect that super massive black holes like Sagittarius A* (the compact dark object at the center of our galaxy) may be a cosmic mafia manipulating the galaxies that house them, possibly even controlling galaxy growth. If this suspicion turns out to be true, black holes may have had more …
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High Resolution Near-Infrared Imaging Observations of the Galactic Centre
… dass die kompakte, nicht-thermische Radioquelle Sagittarius A* (Sgr A*), welche 1974 entdeckt wurde, mit einem solchen Objekt assoziiert ist. In großen Teilen basiert diese Arbeit auf Beobachtungen des galaktischen Zentrums mit der neuartigen Nahinfrarotkamera CONICA und dem dazugehörigen System …
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Relativistic Radiative Hydrodynamics Calculation of Accretion Flow into Supermassive Black Hole
The compact radio source Sagittarius A* (Sgr A*) is the nearest and most-intensively-studied supermassive black hole candidate. With a broadband spectrum which likely requires several emission mechanisms for explanation, and structure of innermost accretion flow not yet well constrained, the …
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Aktyvaus branduolio tėkmės įtaka juodosios skylės maitinimui /
… Solar mass supermassive black hole (SMBH) named Sagittarius A* has been discovered. In many galaxies, SMBHs are known to be part of their centers, and their gravitational pull can affect the surrounding material, potentially contributing to the formation of new stars. According to observations by …
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Astronomical Interferometry at Submillimetre Wavelengths
… maser source MWC 349, the black-hole candidate Sagittarius A* at the centre of our galaxy, and the nearby radio-galaxy Centaurus A. This is followed by a more detailed analysis of data for the evolved star VY CMa and observations of discs around young stars. Spectra of the 321 GHz H20 line from …
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General-relativistic magnetohydrodynamics simulations of black hole accretion disks: dynamics and radiative properties
… hole at the center of our Milky Way galaxy, Sagittarius A* (Sgr A*). Owing to its proximity, rich observational data of Sgr A* is available to compare with the simulation results. We focus mainly on four topics. First, we analyse numerical convergence of 3D GRMHD global disk simulations. …