Galactic Dynamics Research Group
--Hot Topic--
--News--
Tue, 29 Nov 2011 10:00:00
TALK: Devaky Kunneriath: The Galactic center region

Astronomical Institute, Academy of Sciences, Prague

Abstract
High angular resolution radio interferometry at high frequencies enables us to study in great detail ... more
Wed, 23 Nov 2011 15:00:00
TALK: Agata Rozanska: Radiative transfer approach for X-ray astronomy

N. Copernicus Astronomical Center, Warsaw, Poland
Mon, 31 Oct 2011 14:00:00
TALK: Martin Setvak: Meteorologicke druzice Meteosat druhe generace

Czech Hydrometeorological Institute, Satellite Department, Prague

Abstract
Meteosat Second Generation (MSG) a organizace EUMETSAT. Strucna historie a status organizace, clenstvi CR, licencni ... more
Mon, 25 Jul 2011 14:00:00
TALK: Tapas K. Das: Portrait of a Dark Face

Harish-Chandra Research Institute, India

Abstract
The massive black hole at our Galactic centre possesses largest apparent angular size of the event horizon. ... more
Showing 1 to 4 of total 162 records
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--Detail--
Tue, 29 Nov 2011 10:00:00
TALK: Devaky Kunneriath: The Galactic center region

Astronomical Institute, Academy of Sciences, Prague

Abstract
High angular resolution radio interferometry at high frequencies enables us to study in great detail the emission mechanisms of the central region of our Galaxy, which harbours the supermassive black hole source Sagittarius A*. This talk will focus on recent results from our observations with two radio interferometer arrays, the Combined Array for Research in Millimeter-wave Astronomy (CARMA) and Australia Telescope Compact Array (ATCA), and the infrared Very Large Telescope (VLT). I will also present results from the flare modelling of Sgr A* based on multi-wavelength observing campaigns, along with high-resolution maps and a spectral index analysis of the extended emission of the central region (the "mini-spiral") at 3 and 1.3 mm, and compare them to maps in near-infrared Br-gamma (2.16 micron) and mid-indfrared (8.6 micron) wavelengths. I will discuss physical properties of gas and dust that can be deduced from these measurements, such as spectral index, emission measure, density, mass, and extinction.

Location: Seminar held at the Institute of Theoretical Physics, Praha-Troja


If you wish to give a talk at our seminar, please do not hesitate to contact Adam Ruzicka (adam.ruzicka@asu.cas.cz).
--Publications--
05/2011 - Walch, S., Wunsch, R., Burkert, A., Glover, S., Whitworth, A., The Turbulent Fragmentation of the Interstellar Medium: The Impact of Metallicity on Global Star Formation
ApJ, Volume 733, Issue 1, article id. 47
03/2011 - Dale, J. E., Wunsch, R., Smith, R. J., Whitworth, A., Palous, J., The fragmentation of expanding shells - III. Oligarchic accretion and the mass spectrum of fragments
NMRAS, Volume 411, Issue 4, pp. 2230-2240
11/2010 - Ruzicka, A., Theis, Ch., Palous, J., Rotation of the Milky Way and the formation of the Magellanic Stream
ApJ, Volume 724, Issue 1
Showing 4 to 6 of total 62 records
© Copyright Adam Ruzicka 2005-2009