Astrophysical spectroscopy (spring 2007)

Discrete spectral features (emission/absorption lines, absorption edges, recombination continua) are observed in the entire electromagnetic spectral range from astrophysical objects. They carry information about physical conditions, elemental abundances and dynamics of astrophysical plasma. This course will cover physical processes leading to production of those spectral features, and methods of inferring the physical parameters from observational data.

Lecture 1. Overview of observational data, 14-02-07, (.pdf) (html)

Lecture 2. Electron structure of atoms and molecules, 21-02-07, (.pdf) (html)

Lecture 3. Radiative and non-radiative transitions, 28-02-07, (.pdf) (html) . Hi-res .png files showing Grotrian diagrams of CIII, HeI, OIII

Lecture 4. Radiative transfer equation; a simple model of a photo-ionized nebula, 07-03-07, (.pdf) (html).

Lecture 5. Formation and transfer of spectral lines, 14-03-07, (.pdf) (html).

Lecture 6. Spectral lines; photoionization computations, 21-03-07, (.pdf) (html).

Lecture 7. Spectroscopy of stellar coronae, 28-03-07, (.pdf) (html).

Lecture 8, 18-04-07

Lectures 9-11, given by Hagai Netzer (Tel Aviv University), 23-04 – 27-04

Lecture 12. 9-05-07

Lecture 13. 16-05-07

To complete this course you need:

  1. Attend the lectures

  2. Prepare and present a talk on a chosen subject, for example:

    1. 'Cloudy' photoionization code and modeling of the Broad and Narrow Line Region in active galaxies,

    2. 'XSTAR' photoionization code and modeling of 'warm absorbers' in active galaxies

    3. Modeling of the spectra of planetary nebulae, determination of abundances of chemical elements (r)

    4. Modeling of the scattering medium in Seyfert 2 galaxies

    5. Structure of irradiated accretion disks; thermal-ionization instability

    6. X-ray reprocessing: spectra from irradiated accretion disks

    7. X-ray reprocessing: the Fe Kalpha line and its application to studies of accretion disk.

    8. Soft X-ray spectra of Seyfert 1 galaxies: 'warm absorber' or relativistic emission lines

    9. Collisional plasma; physics of stellar coronae

    10. Astrophysical masers.

    11. PAH

    12. more ...

Piotr Życki, CAMK