285170 Astrophysics of Compact Objects (V) (SoSe 2025)
Contents, comment
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GENERAL PROGRAMME (subject to possible changes)
Recalls of basic concepts in Astrophysics
- black body radiation; telescopes; definition of star; stellar types; Hertzsprung-Russell diagramStellar Structure:
- equation of stellar structureCompact Objects:
- stellar evolution; definition of compact object; surface gravity; escape velocity; basic properties of white dwarfs, neutron stars and black holesWhite Dwarfs:
- electron degeneracy pressure; Lane-Emden equation; mass-radius relation; critical massNeutron Stars:
- structure; Tolman–Oppenheimer–Volkoff equation; supernova explosion; supernova remnantsBlack Holes:
- definition; Einstein's equations; Schwarzschild radius; no-hair theorem; the M87 black hole imageBinary systems:
- recalls of Kepler's laws; orbital parameters; circular orbits and eccentric orbits; mass function; Lagrangian points; Roemer delay; Doppler effect; determination of component masses; phase-resolved spectroscopy; post-Keplerian parametersTheory of Accretion:
- radial accretion; disk accretion; energy efficiency; Eddington luminosityX-ray binaries:
- Low-mass X-ray binaries; High-mass X-ray binaries; Roche-Lobe overflow; wind accretion; cataclysmic variables; black hole binaries; microquasarsX-ray pulsators in binaries:
- accretion on neutron star magnetosphere; magnetospheric radius; corotation radius; Alfven radiusUltra-luminous X-ray sources:
- main properties, intermediate-mass black holes, neutron stars, super-Eddington accretionRadio Pulsars
- history; general properties and phenomenology; distribution; dipole model; dispersion measure; spin-down; glitches; P-Pdot diagram; classification
- binary pulsars; millisecond pulsars; evolution in the P-Pdot diagram; optical counterparts; transitional pulsars
- pulsar applications; pulsar timing; Relativistic Measurements in pulsars; Hulse-Taylor pulsar, Double PulsarMagnetars:
- Anomalous X-ray pulsars and Soft Gamma Repeaters; basic properties; energy budget and magnetic field; bursts; giant flaresGamma-Ray Bursts;
- Short and Long gamma-ray bursts; main propertiesActive Galactic Nuclei:
- Supermassive black holes; Sagittarius A*; Sagittarius A* cluster; standard model of AGNs; supermassive black hole binariesGravitational Waves:
- history; GW detectors; sources of GWs (rotating NSs, binary NS mergers), GW150914, GW170817 and kilonova; Pulsar Timing ArraysFast Radio Bursts:
- Observational properties; models; applications
Teaching staff
Dates ( Calendar view )
| Frequency | Weekday | Time | Format / Place | Period | |
|---|---|---|---|---|---|
| weekly | Mo | 14-16 | U2-135 | 07.04.-18.07.2025
not on: 4/21/25 |
|
| weekly | Mi | 14-16 | V2-200 | 07.04.-18.07.2025 |
Subject assignments
| Module | Course | Requirements | |
|---|---|---|---|
| 28-M-VP Vertiefung | Vertiefung (A.1) | Graded examination
|
Student information |
| Vertiefung (A.2) | Graded examination
|
Student information |
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- lecture (V) / 4
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- This lecture is taught in english
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- Faculty of Physics
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