.pdf-Version des Kommentierten Vorlesungsverzeichnisses

Kommentiertes Vorlesungsverzeichnis Sommersemester 2021

Logo der Fachgruppe Physik-Astronomie der Universität Bonn

physics639 Advanced Topics in High Energy Particle Physics
Mo 10-12, Tu 12-14, HS, HISKP
  Instructor(s): I. Brock
  Prerequisites: BSc Degree
physics611: Particle Physics (Master Course)
  Contents: The emphasis will be on quark flavour physics and neutrinos.
- Properties of the CKM and neutrino mixing matrices
- CKM and P-MNS mixing angles and their determination
- Oscillations in flavour and neutrino physics
- CP violation
- Neutrino oscillations and neutrino properties
  Literature: M. Thomson, Modern Particle Physics – Cambridge University Press (2013)
V. Barger, D. Marfatia, K. Whisnant, The physics of neutrinos, Princeton
University Press, 2012.
Further literature will be given and made available at the start of the lecture
  Comments: The topics in this lecture generally address particle physics beyond "physics611"
except "Collider Physics (LHC, ILC)" (although quite some of the topics are or
have been done at colliders).
The focus will be on "flavour physics", i.e. lepton and quark flavours and
oscillations between them.
physics636  Advanced Theoretical Particle Physics
Mo 12-14, We 13, HS I, PI
  Instructor(s): M. Drees
  Prerequisites: Theoretical Particle Physics 1; some knowledge of quantum field theory is expected in some parts of the lecture.
  Contents: Neutrino oscillations and neutrino masses;
Grand Unified Theories;
  Literature: G. Ross, Grand Unified Theories, discusses both supersymmetric and non-supersymmetric GUTs.
Drees, Godbole and Roy, Theory and Phenomenology of Sparticles, gives an in-depth treatment of supersymmetry, with emphasis on phenomenological aspects.
Peskin and Schroeder, An Introduction to Quantum Field Theory, treats the underlying formalism, but also contains many particle physics applications
physics641 Photonics
Tu 14-16, Th 12-14, HS, IAP
  Instructor(s): D. Meschede
  Prerequisites: Optics, Atomic Physics, Quantum Mechanics
  Contents: - Propagation of Laser Beams, Resonators
- Optical Components
- Light Matter Interaction
- Principles of Lasers, Laser Systems
- Applications of Lasers
- Frequency Doubling, Sum and Difference Frequency Generation
- Parametric Processes, Four Wave Mixing
  Literature: - P. Miloni, J. Eberly; Lasers (Wiley, New York, 1988)
- D. Meschede; Optics, Light and Lasers (Wiley, Wiesbaden, 2017)
- F. K. Kneubühl; Laser (Teubner, Wiesbaden, 2005)
- J. Eichler, H.J. Eichler; Laser (Springer, Heidelberg, 2003)
- R. Boyd; Nonlinear Optics (Academic Press, Boston, 2003)
- Y.-R. Shen; The principles of nonlinear optics (Wiley, New York, 1984)

  Comments: The Lecture is suitable for BSc Students beginning with the 5. Semester and for Master-Students.
physics718 Programming in Physics and Astronomy with C++ or Python
We 8-10, HS, IAP
  Instructor(s): E. von Törne
  Prerequisites: Knowledge of basic programming language constructs like "for loops" or "if
clauses" is highly beneficial.
  Contents: This course introduces to python with an emphasis on machine learning in
high energy physics

  • basics of python

  • object oriented programming

  • data analysis with numpy and pandas

  • the scipy library

  • machine learning and multivariate analysis

  • keras and tensorflow

  • applications in high energy physics

  • modern software development

  Literature: All course materials on ecampus
Any python text book for background information.
"Hands-on Machine Learning with Scikit-Learn, Keras, and TensorFlow" by Aurelien
  Comments: Registration on ECampus and Basis is required.
Lectures Wednesday 8-10 via zoom.
Exercises 2hrs biweekly. Several exercise classes offered via zoom.
Exercise times will be determined first week of class.
Students are required to have a computer/laptop with either lunix, windows10 or
macOS. Limited number of rental laptops also available.
physics719  BCGS intensive week HEP
block course in September 2021
  Instructor(s): I. Gregor
  Prerequisites: Basic knowledge of particle physics at the bachelor or master level is assumed.
Some programming knowledge (C or C++) would
also be very useful but is not mandatory.
  Contents: This course will be of interest for students beyond their bachelor, students who
start their master project soon, and
Ph.D. students from other fields of physics who wish to broaden their horizon.
We will discuss particle detectors as
mostly used in particle physics with focus on silicon tracking detectors. A
pixel telescope is a broadly used tool to
investigate newly developed particle detectors at test beams such as ELSA, DESY
or CERN. The course is a combination of
lectures on the main topic and practical hand-on studies around a pixel
telescope will be performed. These include lab
tests with a CMOS sensor, data analysis of data taken at the CERN test beam with
a pixel telescope, and simulations of
tracks in a pixel telescope. An overview of important parameters for detector
testing will be given and some of them
studied in laboratory tests. The week is scheduled for 13.-16.9.2021

While following these lines, particular emphasis is given to

- Overview on detectors for particle physics
- Passage of particles through matter
- Basics on tracking detectors with focus on 
semi-conductor detectors
- Reconstruction of hits
- Important parameters for detector testing and 
how to measure those
- Radiation damage effects
- Simulation of tracks
- Taking data with a pixel telescope (electrons at DESY test beam)
- Test beam data analysis

Of course, not all topics can be addressed to depth within one week. Thus, an
effort is made that students will receive
an overview and understand the most important concepts. The course is an all-
week seminar starting on Monday morning of
the selected week. In case the Corona situation does not allow an in-person lab
course, an all-online version of the
course will be offered. We developed tasks which can be done in small teams
(using breakout rooms in Zoom) working on
virtual boxes. Real test beam data will be analyses as well as systems simulated
using MonteCarlo simulation tools.

Registration: To take part please register on eCampus: before August 31, 2021.
Receiving credit points
Students who wish to receive course credits (3 credit points) also need to
register on BASIS! Registrations opens on
April 15th until end of August 31st 2021.

Form of Testing and Examination: Written reports on the lab results. Students
who would like to obtain course credit for
the intensive week will be asked to write a report on the results of the lab
course and submit a week after. Please
contact gregor"at"physik.uni-bonn.de if you have any questions. The course can
also be taken without course credit.

In case the Corona situation does not allow an in-person course in the
Physikalisches Institut in Bonn, an all-online
course will be offered.

  Literature: Will be provided.
  Comments: The course is an all-day workshop in the lecture free time: one week in
September, date still to be defined.

The Intensive Week will have lectures in the morning and hands-on exercises in
the afternoon.
physics722 Advanced Gaseous Detectors - Theory and Practice
Mo 12-14, HS, HISKP, We 14-16, SR II, HISKP
  Instructor(s): J. Kaminski, B. Ketzer, M. Lupberger
  Prerequisites: Recommended: physics618 Physics of Particle Detectors
  Contents: The aim of this course is twofold: In online lectures the work principle and the physics of gaseous detectors will be reviewed in detail and the formulae will be derived. Also different gaseous detectors as well as the readout electronics and applications in large (LHC) experiments will be discussed. I addition the exercise will serve to familiarize the students with designing and operating a gaseous detector. For this design software, simulations software and lab work will be introduced as part of the course.

  1. Blum, Rolandi, Riegeler, Particle Detection with Drift chambers, Springer

  2. Kolanoski, Wermes, Teilchendetektoren, Springer

  3. F. Sauli, Gaseous Radiation Detectors, Cambridge University Press

  4. F. Sauli, Micro-Pattern Gaseous Detectors, World Scientific Publishing

  Comments: Because of the continuation of the pandemic the lectures will be given online. The exercises will also be online initially, but if the situation allows, practical lab work in small groups is envisioned for the end of the semester.
For the exercises basic knowledge of C++ is recommended.
physics739 Lecture on Advanced Topics in Photonics: Nanophotonics
Tu 8-10, HS, IAP
  Instructor(s): S. Linden
  Prerequisites: Basic knowledge in optics, electrodynamics, and quantum mechanics.
  Contents: Nanophotonics - Small is beautiful

1.) Introduction
2.) A brief recap of electromagnetic fields and waves
3.) Elements of solid state optics
4.) Photonic crystals
5.) Plasmonics
5.) Matematerials and metasurfaces
6.) Optical antennas
7.) Near-field microscopy
  Literature: Lecture notes will be available on the ecampus site of the course.
  Comments: Nanophotonics focuses on the interaction of light with nanostructured materials.
The goal of the course is to introduce the students to the principles of
nanophotonics and to give an overview of the current state of the art.
physics740  Hands-on Seminar: Experimental Optics and Atomic Physics
  Dozent(en): M. Weitz u.M.
  Erforderliche Vorkenntnisse: Optik- und Atomphysik Grundvorlesungen, Quantenmechanik
  Inhalt: Diodenlaser
Optische Resonatoren
Akustooptische Modulatoren
und vieles mehr
  Literatur: wird gestellt
  Bemerkungen: Vorbesprechung am Montag, den 12.4.2021, um 9 c.t.,

Die Vorbesprechung findet Online per Zoom statt, wobei Zugangsdaten
auf ecampus zu finden werden sind.

Seminartermine ab 26.4.2021

Das Seminar ist eine Präsenzveranstaltung und setzt damit die Möglichkeit voraus dass entsprechernder Laborbetrieb stattfinden kann.
physics754  General Relativity and Cosmology
Mo 16-18, We 12, HS I, PI
  Instructor(s): B. Metsch
  Prerequisites: physik221 and physik321 (Theoretical Physics I and II)
optional: some differential geometry
  Contents: Relativity principle;
Gravitation in relativistic mechanics;
Curvilineal coordinates;
Curvature and energy-momentum tensor;
Einstein-Hilbert action and the equations of the gravitational field;
Black holes;
Gravitational waves;
Time evolution of the universe;
Friedmann-Robertson-Walker solutions.
  Literature: [1] L.D. Landau, J.M. Lifschitz: Lehrbuch der theoretischen Physik (Band 2)
Klassische Feldtheorie, Harri Deutsch, ISBN 3817113277 (also available in
English: Classical Field Theory);
[2] C.W. Misner, K.S. Thorne, J.A. Wheeler: Gravitation, W.H. Freeman, ISBN 0-
[3] B.F. Schutz: A first course in general relativity, Cambridge University
Press, ISBN 0-521-27703-5;
[4] S. Weinberg: Gravitation and Cosmology: Principles and Applications of the
General Theory of Relativity, John Wiley, ISBN 0-471-92567-5;
physics7505  High performance computing: Modern computer architectures and applications in the physical science
Fr 12-14, HS, IAP
  Instructor(s): S. Krieg, E. Suarez
  Prerequisites: Knowledge of a modern programming language like C/C++

  • Computer architectures and system components (CPU, memory, network)

  • Software environment

  • Parallel architectures and parallel programming paradigms (MPI,

  • High Performance Computing


  • John L. Hennessy, David A. Patterson: Computer Architecture - A
    Quantitative Approach. Morgan Kaufmann Publishers, 2012

  • David A. Patterson, John L. Hennessy: Computer Organization and Design
    - The Hardware / Software Interface. Morgan Kaufmann Publishers, 2013

  • W.H. Press et al.: Numerical Recipes in C (Cambridge University Press)

  • Message Passing Interface Forum: MPI: A Message-Passing Interface
    Standard, Version 3.1

  • OpenMP Application Programming Interface, Version 4.5, November 2015

  Comments: Oral examination
physics773 Physics in Medicine: Fundamentals of Medical Imaging
Mo 10-12, We 12, SR I, HISKP
  Instructor(s): K. Lehnertz
  Prerequisites: BSc
  Contents: Introduction to physical imaging methods and medical imaging
(1) Physical fundamentals of transmission computer tomography (Röntgen-CT), positron emission
computer´tomography (PET), magnetic resonance imaging (MRI) and functional MRI
(1a) detectors, instrumentation, data acquisition, tracer, image reconstruction, BOLD effect
(1b) applications: analysis of structure and function
(2) Neuromagnetic (MEG) and Neuroelectrical (EEG) Imaging
(2a) Basics of neuroelectromagnetic activity, source models
(2b) instrumentation, detectors, SQUIDs
(2c) signal analysis, source imaging, inverse problems, applications
  Literature: 1. H. Morneburg (Hrsg.): Bildgebende Systeme für die medizinische Diagnostik, Siemens, 3. Aufl.
2. P. Bösiger: Kernspin-Tomographie für die medizinische Diagnostik, Teubner
3. Ed. S. Webb: The Physics of Medical Imaging, Adam Hilger, Bristol
4. O. Dössel: Bildgebende Verfahren in der Medizin, Springer, 2000
5. W. Buckel: Supraleitung, VCH Weinheim, 1993
6. E. Niedermeyer/F.H. Lopes da Silva; Electroencephalography, Urban & Schwarzenberg, 1998
More literature will be offered
  Comments: Beginning April 12, 2021
physics651 BCGS Seminar on Detectors in Nuclear and Particle Physics
Mo 16-18, SR I, HISKP
  Instructor(s): N. Wermes
  Prerequisites: BSc in physics, introduction to nuclear and particle physics (Physik 5)
Useful: Lecture on Physics of Particle Detectors
  Contents: The seminar will discuss the fundamentals and techniques of particle detection (tracking, particle
identification, calorimetry, ...) in nuclear and particle physics using modern detectors/experiments and developments of new detector techniques as examples.

The seminar will pursue a special topic as a connecting red line through the student talks.
  Literature: H. Kolanoski, N. Wermes, Particle Detectors, Fundamentals and Applications, 2020
G. Knoll Radiation Detection and Measurement
W.R. Leo Techniques for Nuclear and Particle Physics Experiments
H. Kolanoski, N. Wermes, Teilchendetektoren, 2016
K. Kleinknecht Detektoren für Teilchenstrahlung
D. Green The Physics of Particle Detectors
Special literature will be provided by the tutors of the individual contributions.
  Comments: The seminar is a joint seminar between the universities of Bonn and Cologne within the Bonn-Cologne Graduate School and is open to all students.
The seminar will take place virtually.

The first seminar will take place on April 12, 16h c.t. (discussion of topics and assignment of speakers)
physics652 Seminar on Quantum Physics
Fr 10-12, HS, IAP
  Instructor(s): S. Stellmer, S. Neubert
  Prerequisites: Courses for the Bachelor of Science in Physics
  Contents: From quantum optics to high-energy physics: bridging 30 orders of magnitude in energy scale

Historically, atomic physics and chemistry were associated with the low energy scale of about 1 eV, nuclear physics explored the intermediate regime of keV to MeV, and particle physics represented the high-energy of up to the TeV scale. Since a few years, this hierarchical order has dissolved completely: Laser spectroscopy of molecules allows to exclude hypothetical particles at the 30 GeV scale, plasmas at 10 million Kelvin are used for precision spectroscopy, and the kinetics of neutron stars test General Relativity. Various platforms, reaching all the way from optical clocks to the cosmic microwave background, hunt for signs of physics beyond the standard model.

In this seminar, we will discuss a selection of contemporary experiments that bridge across the previously well-separated areas of physics, spanning almost 30 orders of magnitude between the atto-eV resolution of optical clocks to large particle accelerators of 10 GeV energy.
  Literature: The seminar will be based on original articles.
physics653 Seminar on Current Issues in Theoretical Hadron Physics
Mo 14-16, SR II, HISKP
  Instructor(s): C. Hanhart, T. Luu, A. Nogga, D. Rönchen
  Prerequisites: Advanced Quantum Mechanics necessary,
Theoretical Hadron Physics and Quantum Field Theory helpful for some topics
  Contents: This seminar will cover different topics, which are currently of interest in the field of hadron physics. These
topics will - among others - include:

  • Hadrons beyond the Quark Model

  • Many body physics

  • Resonances in lattice gauge theory

  • Baryon spectroscopy - Excited states of protons and neutrons

  Literature: Will be provided during the seminar.
physics655 Seminar Public Presentation of Science: Atmospheric and Climate Physics
Th 9-11
  Instructor(s): H. Dreiner
  Contents: Introduction to atmospheric and climate physics
  Literature: D. Andrews: An Introduction to Atmospheric Physics
J. Marshall and R. Plumb: Atmosphere, Ocean and Climate Dynamics
W. Ruddiman: Earth's Climate; Past and Future
physics656 Seminar Medical Physics: Physical Fundamentals of Medical Imaging
Mo 14-16, SR I, HISKP
  Instructor(s): K. Lehnertz
  Prerequisites: Bsc
  Contents: Physical Imaging Methods and Medical Imaging of Brain Functions
Emission Computer Tomography (PET)
- basics
- tracer imaging
- functional imaging with PET
Magnetic Resonance Imaging (MRI)
- basics
- functional MRI
- diffusion tensor imaging
- tracer imaging
Biological Signals: Bioelectricity, Biomagnetism
- basics
- recordings (EEG/MEG)
- source models
- inverse problems
  Literature: 1. O. Dössel: Bildgebende Verfahren in der Medizin, Springer, 2000
2. H. Morneburg (Hrsg.): Bildgebende Systeme für die medizinische Diagnostik,
Siemens, 3. Aufl.
3. H. J. Maurer / E. Zieler (Hrsg.): Physik der bildgebenden Verfahren in der Medizin,
4. P. Bösiger: Kernspin-Tomographie für die medizinische Diagnostik, Teubner
5. Ed. S. Webb: The Physics of Medical Imaging, Adam
  Comments: Time: Mo 14 - 16 and one lecture to be arranged

Preliminary discussion on Monday April 19, 2021, 2 pm
6816  Praktikum in der Arbeitsgruppe: Theorie der kondensierten Materie und Vielteilchen-Physik
für Studierende im Bachelor-Studiengang,
pr, ganztägig, Dauer nach Vereinb., PI
  Instructor(s): J. Kroha
  Prerequisites: Grundvorlesungen in theoretischer Physik, insbesondere
Theoretische Physik III: Quantenmechanik (physik421)
Theoretische Physik IV: Statistische Physik (physik521).
Advanced Quantum Theory (physics606) vorteilhaft
Theoretical Condensed Matter Physics (phyics 617) vorteilhaft.
  Contents: Kleinere Projekte im Zusammenhang mit der in der Forschungsgruppe laufenden Forschung. Sowohl analytische als auch numerische Arbeiten. Die Studierenden sollen frühzeitig an die aktuelle Forschung in der theoretischen Quanten- und Vielteilchenphysik herangeführt werden.
  Literature: Wird nach Vereinbarung gestellt.
  Comments: Homepage der Gruppe: https://www.kroha.uni-bonn.de/
6826 Praktikum in der Arbeitsgruppe: Neurophysik, Computational Physics, Zeitreihenanalyse
pr, ganztägig, ca. 4 Wochen, n. Vereinb., HISKP u. Klinik für Epileptologie
  Instructor(s): K. Lehnertz u.M.
  Prerequisites: basics of programming language
  Contents: This laboratory course provides insight into the current research activities of the Neurophysics group.
Introduction to time series analysis techniques, neuronal modelling, complex networks.
Opportunity for original research on a topic of own choice, with concluding presentation to the group.
  Literature: Working materials will be provided.
  Comments: Contact:
Prof. Dr. K. Lehnertz
email: klaus.lehnertz@ukbonn.de
6834  Praktikum in der Arbeitsgruppe: Vorbereitung und Durchführung optischer und atomphysikalischer Experimente, Mitwirkung an Forschungsprojekten der Arbeitsgruppe / Laboratory in the Research Group: Preparation and conduction of optical and atomic physics experiments, Participation at research projects of the group (D/E)
pr, ganztägig, 2-6 Wochen n. Vereinb., IAP
  Dozent(en): M. Weitz u.M.
  Erforderliche Vorkenntnisse: Optik und Atomphysik Grundvorlesungen, Quantenmechanik
  Inhalt: Studenten soll frühzeitig die Möglichkeit geboten werden, an aktuellen Forschungsthemen aus dem Bereich der experimentellen Quantenoptik mitzuarbeiten: Ultrakalte atomare Gase, Bose-Einstein-Kondensation, kollektive photonische Quanteneffekte. Die genaue Themenstellung des Praktikums erfolgt nach Absprache.
  Literatur: wird gestellt
  Bemerkungen: Homepage der Arbeitsgruppe:

6835 Special Topics in Quantum Field Theory: Anomalies and their consequences
Blockvorlesung: 31.05. bis 02.06.2021
  Instructor(s): E. Kraus
  Prerequisites: Quantum field theory (physics 755)
Basics of quantization of gauge theories
  Contents: The anomaly of the axial current
Nonrenormalization of the anomaly
Anomalies in gauge theories: Nonrenormalizabiliy and symmetries
  Literature: N. N. Bogoliubov, D.V. Shirkov; Introduction to the theory of quantized fields
(J. Wiley & Sons 1959)
M. Kaku, Quantum Field Theory (Oxford University Press 1993)
M. E. Peskin, D.V. Schroeder; An Introduction to Quantum Field Theory (Harper
Collins Publ. 1995)

6838 Praktische Übungen zur Bildgebung und Bildverarbeitung in der Medizin
pr, Kliniken Venusberg
(Teilnahme am Seminar "Medizinische Physik" erforderlich)
  Instructor(s): K. Lehnertz, C. Berg, W. Block, P. Trautner
  Contents: Continuation of topics addressed in the seminar; examples of medical imaging in prenatal diagnosis, radiology, and neurosciences.
  Comments: Dates to be arranged during the semester if pandemic situation permits
astro8402 X-ray astronomy
Fr 13-15, Raum 0.012, AIfA
Exercises: 1 hr. by appointment
  Instructor(s): T. Reiprich
  Prerequisites: Introductory astronomy course.
  Contents: X-rays are emitted from regions where the Universe is hot and wild. The lecture will provide an overview of
modern X-ray observations of all major X-ray sources. This includes, e.g., comets and planets in our solar
system; Galactic systems like extrasolar planets, cool and hot stars, remnants of exploded stars, isolated
white dwarfs and neutron stars, cataclysmic variables, close binaries with neutron stars and black holes, hot
interstellar medium, and the Galactic center region; extragalactic X-ray sources like spiral and elliptical
galaxies, galaxy clusters, intergalactic medium, and active galactic nuclei, i.e., supermassive black holes
lurking in the centres of galaxies. The X-ray emission and absorption processes as well as current and future
space-based instruments used to carry out such observations will be described, including the eROSITA space
telescope to be launched in 2019. In the accompanying lab sessions, the participants will learn how to
download, reduce, and analyze professional X-ray data from a satellite observatory.
  Literature: A script of the lecture notes will be provided.
  Comments: It is currently expected that the lecture will be held online. Please check eCampus for up-to-date information.
astro847 Optical Observations
Fr 11-13, Raum 0.012, AIfA
Exercises: Mo 9
  Instructor(s): T. Schrabback, M. Tewes
  Prerequisites: Astronomy introduction classes
  Contents: Optical CCD and near infrared imaging, conducting and planning observing runs,
detectors, data reduction, catalogue handling, astrometry, coordinate systems,
photometry, spectroscopy, photometric redshifts, basic weak lensing data
analysis, current surveys, ground-based data versus Hubble Space Telescope
observations, how to write observing proposals.

Practical experience is gained by obtaining and analysing multi-filter CCD
imaging observations of galaxy clusters using the 50cm telescope on the AIfA
  Literature: Provided upon registration.
  Comments: The class has a strong focus on hands-on observations and data analysis in
Python. It should be particularly useful for students who consider conducting a
master's thesis project which involves the analysis of optical imaging data from
professional telescopes (e.g. wide-field imaging data or Hubble Space Telescope
astro849 Multiwavelength observations of galaxy clusters
Mo 16-17:30, Raum 0.008, AIfA
Exercises: 1 hr. by appointment
  Instructor(s): T. Reiprich, F. Pacaud
  Prerequisites: Introductory astronomy course.
  Contents: Aims of the course:
To introduce the students into the largest clearly defined structures in the Universe, clusters of galaxies. In
modern astronomy, it has been realized that a full understanding of objects cannot be achieved by looking at
just one waveband. Different phenomena become apparent only in certain wavebands, e.g., the most massive
visible component of galaxy clusters -- the intracluster gas -- cannot be detected with optical telescopes.
Moreover, some phenomena, e.g., radio outbursts from supermassive black holes, influence others like the X-
ray emission from the intracluster gas. In this course, the students will acquire a synoptic, multiwavelength
view of galaxy groups and galaxy clusters.
Contents of the course:
The lecture covers galaxy cluster observations from all wavebands, radio through gamma-ray, and provides a
comprehensive overview of the physical mechanisms at work. Specifically, the following topics will be
covered: galaxies and their evolution, physics and chemistry of the hot intracluster gas, relativistic gas, active
supermassive black holes, cluster weighing methods, Sunyaev-Zeldovich effect, gravitational lensing, radio
halos and relics, tailed radio galaxies, and the most energetic events in the Universe since the big bang:
cluster mergers.
  Literature: Lecture script and references therein.
  Comments: It is currently expected that the lecture will be held online. Please check eCampus for up-to-date information.
astro851 Stellar and solar coronae
Th 13-15:15, Raum 0.01, MPIfR
Exercises: 1 hr. by appointment
  Instructor(s): M. Massi
T Tauri (young stellar systems not yet in Main Sequence) and RS CVn systems (evolved stellar systems that already left the Main Sequence), although very diverse systems, have similar flare activities observed at radio and X-ray wavelengths.

The flares in both systems are several orders of magnitude stronger than those of the Sun. The origin of this activity, defined "coronal activity", depends on the convective zone, the rotation, the formation and dissipation of magnetic fields. In general terms: This is a mechanism of the same type as on the Sun, but enforced by the binary nature of these systems.

In these lectures we will explore a link between the amplification of initial magnetic fields by dynamo action in several rotating systems ( Sun, binary systems and accretion discs around black holes) and the release of magnetic energy into a corona where particles are accelerated.

Together with the basic theory there will be as well illustrated the latest progress in the research on stellar coronal emission derived from recent space missions and high-resolution radio observations.
  Literature: The Solar Corona.
Golub and Pasachoff
6954 Seminar on galaxy clusters
Th 15-16:30, Raum 0.006, AIfA
  Instructor(s): T. Reiprich
  Prerequisites: Introductory astronomy course.
  Contents: The students will report about up-to-date research work on galaxy clusters based on scientific papers.
  Literature: Will be provided.
  Comments: It is currently expected that the seminar will be held online. Please contact T. Reiprich for details.