Galactic centre observations with local mm-telescope arrays [Elektronische Ressource] / Devaky Kunneriath
124 Pages
English

Galactic centre observations with local mm-telescope arrays [Elektronische Ressource] / Devaky Kunneriath

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Galactic Centre observations with localmm-telescope arraysINAUGURAL-DISSERTATIONzurErlangung des Doktorgradesder Mathematisch-Naturwissenschaftlichen Fakultätder Universität zu Kölnvorgelegt vonDevaky Kunneriathaus Ernakulam, IndienKöln 2010Berichterstatter: Prof. Dr. Andreas EckartProf. Dr. J. Anton ZensusTag der mündlichen Prüfung: 18. Nov 20101AbstractRadio interferometry observations are a powerful tool to study the cen-tral regions of the Galactic centre (GC). High angular resolution observations at millimetre wavelengths can disentangle the emission of Sgr A* fromthe thermal emission of the circum nuclear disk (CND) and the minisp iralsurrounding it. In this thesis I present the results of radio interferometricobservations of the GC region with local millimetre-telescope arrays suchas CARMA and ATCA, supplemented by observations in the infrared (IR)with ESO’s VLT telescopes. My goal is to analyse the emission mechanismspresent in the central few parsecs of the GC region, in particular the exten-ded thermal emission of the ionized gas and dust of the minispiral re gionand the non-thermal emission of Sagittarius A* (Sgr A*), the radio sourceassociated with the supermassive black hole (SMBH) at the GC.Observations were carried out in March and April 2009 at 1.3 and 3mmwith the mm telescope array CARMA in California, in June 2006 with themid-infrared (MIR) instrument VISIR at ESO’s VLT, and the NIR Brγ inAugust 2009with VLT NACO.

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Published 01 January 2010
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Language English
Document size 15 MB