PHY3043 : Radiative Transfer and High Energy Astrophysics
- Offered for Year: 2022/23
- Module Leader(s): Dr Adam Ingram
- Owning School: Mathematics, Statistics and Physics
- Teaching Location: Newcastle City Campus
Semesters
| Semester 2 Credit Value: | 10 |
| ECTS Credits: | 5.0 |
Aims
The aim of this course is to develop the theory of radiation and its interaction with matter in order to understand the physical processes involved in the formation of the spectrum. We will use this framework to explore a range of astrophysical systems including: planetary nebulae, stars, supernova remnants, black holes in binary systems and active galactic nuclei, and galaxy clusters. Theoretical models for the spectrum and other observational properties of these systems will be derived, critically examined, and used to measure physical properties of the system from observables such as spectral lines.
Outline Of Syllabus
- Radiation field: radiative flux, solid angle, intensity, Planck function.
- Radiative transfer: optical depth, source function, equation of radiative transfer.
- Spectral lines: emission and absorption lines, excitation and de-excitation mechanisms, statistical equilibrium.
- Ionization and re-combination: mechanisms, ionization balance, HII regions.
- Basic stellar-spectroscopy: continuum and line spectra.
- Basic properties of interstellar dust.
- Shocks: blast waves, Rankine-Hugoniot conditions, cosmic rays, diffusive shock acceleration.
- Synchrotron radiation: power radiated, spectrum, spectral ageing.
- Black holes: accretion discs, active galactic nuclei, superluminal jets, Compton scattering, gravitational waves.
- Galaxy clusters: thermal bremsstrahlung radiation and the Sunyaev-Zeldovich effect.
Literature:
- Radiative Processes in Astrophysics by George B. Rybicki and Alan P. Lightman
- High Energy Astrophysics by Malcolm S. Longair
Teaching Methods
Teaching Activities
| Category | Activity | Number | Length | Student Hours | Comment |
|---|---|---|---|---|---|
| Scheduled Learning And Teaching Activities | Lecture | 22 | 1:00 | 22:00 | Formal lectures |
| Guided Independent Study | Assessment preparation and completion | 1 | 15:00 | 15:00 | Completion of in course assignments |
| Guided Independent Study | Assessment preparation and completion | 1 | 26:00 | 26:00 | Examination revision |
| Guided Independent Study | Assessment preparation and completion | 1 | 2:00 | 2:00 | Exam |
| Scheduled Learning And Teaching Activities | Small group teaching | 2 | 1:00 | 2:00 | Tutorials |
| Guided Independent Study | Independent study | 33 | 1:00 | 33:00 | Preparation time for lectures, background reading, coursework review |
| Total | 100:00 |
Teaching Rationale And Relationship
Lectures are used for the delivery of theory and explanation of methods, illustrated with examples.
Assessment Methods
The format of resits will be determined by the Board of Examiners
Exams
| Description | Length | Semester | When Set | Percentage | Comment |
|---|---|---|---|---|---|
| Written Examination | 120 | 2 | A | 90 | N/A |
Other Assessment
| Description | Semester | When Set | Percentage | Comment |
|---|---|---|---|---|
| Prob solv exercises | 2 | M | 10 | Problem-solving exercises |
Assessment Rationale And Relationship
A substantial formal unseen examination is appropriate for the assessment of the material in this module. The coursework assignment allows the students to develop their problem-solving techniques, to practise the methods learnt in the module, and it is crucial to assess their progress and to receive feedback. This assessment has a secondary formative purpose as well as their primary summative purpose. Students will also be able to practice problem solving skills with the provided practice questions, but the summative assessment is essential for gauging progress, providing feedback and, if needed, extra support.
Reading Lists
Timetable
- Timetable Website: www.ncl.ac.uk/timetable/
- PHY3043's Timetable