Galactic Center
An extremely top-heavy initial mass function in the galactic center stellar disks
... the Galactic center star cluster (and the Hubble time) through- out the central parsec, especially if the spatial distribution of the giants is similar to that of most of the stellar ...the Galactic ...
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Trajectories of bright stars at the Galactic Center as a tool to evaluate a graviton mass
... the Galactic Center as a tool for an evaluation specific parameters of the black hole and also to obtain constraints on the fundamental gravity law such as a modifications of Newton gravity law in a weak field ...
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Modeling the infrared extinction toward the galactic center
... Flaherty, K. M., J. L. Pipher, S. T. Megeath et al., Infrared extinction to- ward nearby star-forming regions, Astrophys. J., 663, 1069–1082, 2007. Fritz, T. K., S. Gillessen, K. Dodds-Eden, D. Lutz, R. Genzel, W. Raab, ...
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Directed search for continuous gravitational waves from the Galactic center
... the Galactic center region, performed on two years of data from LIGO’s fifth science run from two LIGO ...the Galactic center are 3:35 10 25 for frequencies near 150 ...
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Infrared monitoring of OH/IR stars near the Galactic Center
... the Galactic Center for 1200 days in the K ...the Galactic Center have lower luminosities and higher wind ex- pansion velocities v exp at a given period than similar stars in the ...
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Gravitational Lensing with a Large Deflection Angle as a Probe of General Relativity and the Galactic Center
... Virbhadra and Ellis [56] outline an algorithm for calculating the location and brightness of the infinite sequence of images that would appear for a source lensed by the black hole at Sgr A*. They calculate the location ...
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Implications for Discovery of Strong Radial Magnetic Field at the Galactic Center—Challenge to Black Hole Models
... The black hole model will be excluded by a very strong radial magnetic field near the Galactic Center which has been detected in 2013. Following it, the explosion mechanism, for both supernova and the hot ...
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The composition and distribution of dust along the line of sight toward the Galactic Center
... Bright infrared (IR) sources combined with 30 mag of visual extinction have made the Galactic center (GC) an attractive line of sight for the study of interstellar dust com- position. Absorption features in ...
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Distributed star formation throughout the galactic center cloud Sgr B2
... The Central Molecular Zone (CMZ) of our Galaxy ap- pears to be overall deficient in star formation relative to the gas mass it contains (G¨ usten & Downes 1983; Morris & Serabyn 1996; Beuther et al. 2012; Immer ...
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Graviton mass bounds from an analysis of bright star trajectories at the Galactic Center
... in independent way; b) our estimate is consistent with LIGO’s one; c) our estimate will be definitely improved with forthcoming facilities such as GRAVITY, E-ELT and TMT [150–152] because more precise observations of ...
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The Influence of Dense Gas Rings on the Dynamics of a Stellar Disk in the Galactic Center
... The Galactic center hosts several hundred early-type stars, about 20% of which lie in the so-called clockwise disk, while the remaining 80% do not belong to any ...
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Accurate OH Maser Positions II The Galactic Center Region
... We fi nd that there are 177 ( out of 266; 67% ) symmetric sources and 89 ( out of 266; 33% ) asymmetric sources. A comparison between the mid-IR properties of these two samples is made, since for wavelengths longer than 5 ...
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Constraints on alternative theories of gravity with observations of the Galactic Center
... the Galactic Center as a useful tool to obtain constraints on the fundamental gravity ...the Galactic Center we obtain bounds on a graviton mass and these bounds are comparable with LIGO con- ...
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The Dusty Galactic Center as Seen by SCUBA-2
... the Galactic Center at 450 μ m and 850 μ ...the Galactic Plane in six 6 ° strips at intervals between Galactic longitudes 8 ° and 62 ° using a similar mapping strategy as used in the present ...
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The Survey of Water and Ammonia in the Galactic Center (SWAG): Molecular Cloud Evolution in the Central Molecular Zone
... The Survey of Water and Ammonia in the Galactic Center ( SWAG ) covers the Central Molecular Zone ( CMZ ) of the Milky Way at frequencies between 21.2 and 25.4 GHz obtained at the Australia Telescope ...
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Plewa, Philipp (2018): The galactic center in motion. Dissertation, LMU München: Fakultät für Physik
... The first convincing evidence for the existence of a massive black hole in the Galactic Center was provided by the discovery of the S-stars’ large proper motions (Eckart & Genzel, 1996; Genzel et al., ...
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The galactic center lobe : new 14GHz GBT observations
... The Galactic Center Arc (GCA) as observed with the Spitzer/IRAC (namely chs 3 and 4, ...the Galactic Center (namely Sgr A and parts of the GCA) were masked out in the Spitzer/MIPS 24 µm map so ...
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Stellar positions from SiO masers in the Galactic center
... dynamical center (Sgr ...inner Galactic mass distribution have been performed, using line-of-sight velocities of gas and ...the Galactic center ...
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Advection‐dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
... An advection-dominated accretion flow is one in which most of the energy released by viscous dissipation is stored in the gas and advected to the center, and only a small fraction of the energy is radiated ...
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Toward understanding the 3 4 μm and 9 7 μm extinction feature variations from the local diffuse interstellar medium to the Galactic center
... there are fewer carbon stars in the central regions of the Galaxy and the production of carbon-rich dust may be sub- stantially reduced compared with the outer Galactic disk. However, as shown in Table 1, the 3.4 ...
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