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Introduction
Members
Research
Master's projects
Archive of
untriggered gamma-ray bursts
Links
Supported by
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If you're interested in doing a Bachelor's/Master's project (självständigt arbete) in high energy astrophysics, contact Stefan Larsson (stefan@astro.su.se) or Felix Ryde (felix@particle.kth.se).
Suggested projects
- Accretion and radiative processes close to a black hole
Part of our studies of accreting compact objects relate to the physics of the innermost accretion disc. Here we see possible signs of general relativistic effects, such as relativistic precession. Relativistic effects may also influence other properties of the radiation, such as polarization. Projects within this topic can be both observational or more theoretical, and include simulations.
- Analysis of INTEGRAL observations:
The group is working with many aspects of the
analysis and modeling of the X-/γ-ray data observed by the INTEGRAL satellite. Huge amounts of data on a variety of highly exciting high-energy objects lead to promising data mining opportunities. Especially projects of accreting neutron stars and black hole systems (Cyg X-1) and accreting X-ray pulsars can be provided
- Fermi gamma-ray burst observations:
Sweden is taking part in the collaboration on the major satellite mission for gamma rays: the Fermi Gamma-ray Space Telescope. The project can consist of analyzing the simulated data that has been produced for the 2nd data challenge and/or analysis of data from, for instance, gamma-ray bursts.
- Relativistic effects at the emission site in gamma-ray bursts:
Gamma-ray bursts emit mainly non-thermal radiation from a highly relativistic environment with Lorentz factors of approximately ~100-1000. This leads to interesting relativistic effects that have to be taken into account for the full understanding of the observed spectra and light curves in the gamma ray regime.
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Previous Master's theses
- Polarised Gamma-Ray Observer (PoGOLite) Pathfinder Experiment: Neutron Shield Design and Limits on Polarisation Measurements, Kristoffer Myrsten (KTH).
- Temporal properties of gamma-ray bursts observed by Swift: indications of long-term central engine activity, Åsa Höglund. (pdf file)
- Simulation of the keV-GeV emission from gamma ray bursts using a thermal emission model and its detectability by GLAST, Milan Battelino.
- Studies of Energy Dependent X-ray Polarisation with PoGOLite - Monte Carlo Simulations with Geant4, Olle Engdegård (KTH).
- Temporal faces of Cygnus X-1, Magnus Axelsson.
- Cygnus X-3 - A Multiwavelength Study, Linnea Hjalmarsdotter.
- Wind-fed X-ray binaries: Collision of gas streams near a rotating black hole, Sara Bergenius.
[download postscript file]
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Send comments to magnusa@astro.su.se.
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