DIVISION VII / WORKING GROUP GALACTIC CENTER
نویسندگان
چکیده
منابع مشابه
The Galactic Center
In the past decade high resolution measurements in the infrared employing adaptive optics imaging on 10m telescopes have allowed determining the three dimensional orbits stars within ten light hours of the compact radio source at the center of the Milky Way. These observations show the presence of a three million solar mass black hole in Sagittarius A* beyond any reasonable doubt. The Galactic ...
متن کاملThe Galactic Center Magnetosphere
The magnetic field within a few hundred parsecs of the center of the Galaxy is an essential component of any description of that region. The field has several pronounced observational manifestations: 1) morphological structures such as nonthermal radio filaments (NTFs) – magnetic flux tubes illuminated by synchrotron emission from relativistic electrons – and a remarkable, large-scale, helicall...
متن کاملThe Galactic Center radio jet
Recent observations of the radio and NIR source Sgr A* reinforce the interpretation of the Galactic Center as a scaled down version of an AGN. The discovery of an elongated structure at 43 GHz and increasing evidence for the presence of an accretion disk surrounding a Black Hole lead us to assume that both, an accretion disk and a jet, are present in the Galactic Center and are physically linke...
متن کاملMiras around the Galactic Center
We report results of our near-IR survey for variables in a field of view of 20′ by 30′ towards the Galactic Center (GC), where we detected 1364 long-period variables. We have established a method for the simultaneous estimation of distances and extinctions using the period-luminosity relations for the JHKs bands. Our method is applicable to Miras with periods in the range 100–350 days and mean ...
متن کاملFormation of Galactic Center Magnetic Loops
A survey for the molecular clouds in the Galaxy with NANTEN mm telescope has discovered molecular loops in the Galactic center region. The loops show monotonic gradients of the line of sight velocity along the loops and the large velocity dispersions towards their foot points. It is suggested that these loops are explained in terms of the buoyant rise of magnetic loops due to the Parker instabi...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2008
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921308025696