Ruxandra Toma

Argelander Institut für Astronomie, Universität Bonn, Germany

Fondat de romani in urma cu peste 2000 de aniSituat pe Rin Locul de nastere al lui Ludwig van Beethoven Populatie: 300000 locuitori

Fondata in 1818, de regele Friedrich Wilhelm III.

Una dintre institutiile academice de varf ale Germaniei

Absolventi celebri: Karl Marx, Friedrich Nietzsche, Konrad Adenauer, doi laureati ai Premiului Nobel – si papa Benedict al XVI-lea.

27.500 studenti (4.100 studenti internationali)

513 profesori

Friedrich Wilhelm August Argelander a pus bazele Astronomiei in Bonn (1836).

El a fondat observatorul "Sternwarte" in "Poppelsdorfer Allee", in 1845.

Radioastronomia ce a cunoscut mari progrese si aparitia unor noi discipline au condus la fondarea unor noi institute: "Radioastronomisches Institut" (1962), "Institut für Astrophysik und Extraterrestrische Forschung" (1964) si "Max-Planck-Institut für Radioastronomie" (1966).

In 1973 cele 3 institute s-au mutat in cladirea aratata in fotografiile urmatoare.In ianuarie 2006 s-au unit sub numele Institutul Argelander pentru Astronomie.

1952-1954 a fost construit un nou observator, “Hoher List”, in regiunea muntoasa Eifel, aprox. 100 km SV de Bonn. Instrumentele din “Sternwarte” au fost mutate la Hoher List.

Telescopes of the Observatory:

1: 1 m - Cassegrain-Nasmyth-Telescope

2: Schmidt-Telescope;

3: Astrograph;

4: 60 cm - Ritchey-Chretien-Telescope;

5: Schröder-Refractor;

6: Bonn Double Refractor.

Catalogue of compulsory courses

CosmologyStars and Stellar EvolutionAstrophysics of GalaxiesPhysics of Interstellar MediumAdvanced Quantum MechanicsAdvanced Laboratory Course

Catalogue of elective courses Observational Astronomy

Radio Astronomy: Tools, Applications, Impacts Submillimeter Astronomy Astronomical Interferometry and Digital Image ProcessingIntroduction to Galactic and Extragalactic X-Ray Astronomy Observational CosmologyWave Optics and Astronomical Applications Optical Observations Galactic and Intergalactic Magnetic Fields Multiwavelength Observations of Galaxy Clusters

Catalogue of elective courses Modern Astrophysics

Stellar and Solar Coronae Gravitational Lensing The Physics of Dense Stellar SystemsNumerical DynamicsDark matter and dark energy explored by radio and X-ray observations Quasars and MicroquasarsStar Formation NucleosynthesisThe cosmic history of the intergalactic medium

1. Cosmology: Introduction and overview2. Homogeneous world models3. Introduction to General Relativity4. Friedmann-Robertson-Walker models5. Thermal history of the Universe6. Structure formation in the Universe -Linear structure growth-The power spectrum of density fluctuations-Baryonic Acoustic Oscillations-Nonlinear structure formation – computer simulations,

mass profiles, galaxy-clustering7..

7. CMB anisotropies8. Inflation9. Cosmic shear

Sonda Wilkinson Microwave Anisotropy Probe - NASA. Satelitul a fost lansat pe 30 iunie 2001 Rezultatele WMAP:

- prima hartă completă a radiaţiei cosmice de fond pe întreg cerul (<1°)- existenţa energiei întunecate;- s-au calculat valori mai precise pentru densitatea materiei întunecate. - a determinat precis vârsta Universului, perioadele de tranziţii şi geometria spaţiului

WMAP 5 – al cinci-lea an de măsurători – 7 martie 2008 A realizat cea mai recentă hartă a CMB ce provine din orice

direcţie cosmică, la rezoluţie de cca. 0,0002°. Temperatura medie actuală este de 2,725 K. Culorile reprezintă anizotropiile: regiunile roşii sunt mai reci iar cele albastre sunt mai calde.

Structura Universului cunoscută astăzi (dreapta sus) şi acum 13,7 miliarde de ani (Cosmosul avea 380.000 ani), când lumina a fost emisă (dreapta jos)

In the HOLIGRAIL (HOher LIst GRAvItational Lensing) project we use the 1m Telescope at Hoher List Observatory to monitor multiply-lensed quasars aiming at the determination of time-delays between the different light paths. These can be used to study the individual radial mass profile of the lensing galaxies, or -from a larger ensemble- to constrain the Hubble Constant H0. This programme has been inspired by the COSMOGRAIL (the COSmological MOnitoring of GRAvItational Lenses) project.

Apart from our scientific goals, the H0LIGRAIL project comprises a technical upgrade of the 1m Telescope and the introduction of a new lab course experiment, performing and analyzing H0LIGRAIL data, which is now part of the advanced lab course in Physics at Bonn University.

Superviser: Prof. Dr. Urlich Klein, AIfA Project: Gas and Dark Matter Properties of

Dwarf Galaxies

Plan:- Observations with Isaac Newton Telescope

- La Palma (17th-18th of October)- Data reduction and analysis- Interpretation

Master Thesis projectAbstract We propose to perform deep broadband (B,r,i) and H alpha imaging of four isolated dwarf galaxies with giant HI disks. Owing to their unusually large HI disks, these objects are ideal tostudy both the dark matter distribution on galactic scales as well as possible gas accretion. These galaxies have recently been observed in HI at th e WSRT (project R07B009) and the proposed INT-WFC observations will allow us to accurately determine the distribution of the stellar mass component of the target galaxies, a prerequisite for assessing their dark matter content.

The Isaac Newton Group of Telescopes (ING) operates the 4.2 metre William Herschel Telescope (WHT), the 2.5 metre Isaac Newton Telescope (INT) and the 1.0 metre Jacobus Kapteyn Telescope (JKT) on behalf of the Science and Technology Facilities Council (STFC) of the United Kingdom, the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) of the Netherlands, and the Instituto de Astrofísica de Canarias (IAC) in Spain. The ING is located at the Observatorio del Roque de los Muchachos, La Palma, Spain.

Rheinische – Friedrich -Wilhelms – Universität

-http://www3.uni-bonn.de/the-university

-The University of Bonn – An International Research University

AIfA, Hoher List Observatory, MSc Astrophysics, HOLIGRAIL

- http://www.astro.uni-bonn.de/english/index.php

- Module Handbook – Master in Astrophysics

- INT Proposal – Gas and Dark Matter Properties of Dwarf galaxies

Cosmology and Gravitational Lensing-Prof. Dr. Peter Schneider – Cosmology – Lecture Notes-Prof. Dr. Peter Schneider – Gravitational Lensing – Lecture Notes