Detection of gamma-rays in the AMS experiment and time analysis of gamma-ray bursts by HETE-2 mission
Description
AMS is a particle detector that will be launched on the International Space Station at the beginning of 2008. With the Silicon Tracker and the Electromagnetic Calorimeter, it will be able to measure photons between 1 GeV and 300 GeV. In the first part of this thesis, results of the analysis of the calorimeter test beam data are given. Using a fast simulation tool, the gamma detection capabilities of AMS are evaluated. Predictions are made for different astrophysical sources as well as for the supersymmetric dark matter halo around the Galactic Centre. HETE-2 is a satellite conceived to detect and localise gamma-ray bursts (GRBs) and is currently taking data. Given the energies released, GRBs could be used to test areas of physics unreachable with accelerators. In the second part of the thesis, we present the study of the light curves of twelve GRBs with known redshifts detected by FREGATE on board of HETE-2. By studying the time lags between photons of different energies, we are able to determine a lower limit on the quantum gravity scale of EQG > 1015 GeV. (author)
Abstract (French)
AMS est un detecteur de particules qui sera embarque a bord de la Station Spatiale Internationale debut 2008. Avec son trajectometre en silicium et son calorimetre electromagnetique, il pourra detecter les photons entre 1 GeV et 300 GeV. Dans la premiere partie de cette these, nous donnons les resultats obtenus lors de l'analyse des donnees d'un test sur faisceau du calorimetre electromagnetique. A l'aide d'un logiciel de simulation rapide, nous evaluons les capacites de detection d'AMS en gamma. Nous donnons des predictions de flux pour differents types de sources astrophysiques et pour un halo de matiere noire supersymetrique au centre galactique. HETE-2 est un satellite actuellement en fonctionnement qui est concu pour detecter et localiser les sursauts gamma. Du fait des energies mises en jeu, ce type de source pourrait etre utilise pour tester des domaines de la physiques inaccessibles aux accelerateurs. Dans la deuxieme partie de la these, nous etudions les courbes de lumieres de douze sursauts gamma observes par le detecteur FREGATE a bord d'HETE-2 et pour lesquels une mesure du redshift est disponible. En etudiant les ecarts temporels entre des photons de differentes energies, nous pouvons determiner une limite inferieure sur l'echelle de gravitation quantique de EQG > 1015 GeV. (auteur)Files
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Additional details
Additional titles
- Original title (French)
- Detection des gamma dans l'experience AMS et analyse temporelle des sursauts gamma par la mission HETE-2
Publishing Information
- Imprint Pagination
- 246 p.
- Report number
- FRNC-TH--11710
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 52054038
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ANNIHILATION; CALIBRATION; CHERENKOV COUNTERS; COMPUTERIZED SIMULATION; COSMIC GAMMA BURSTS; COSMIC PHOTONS; DIELECTRIC TRACK DETECTORS; DYNODES; ENERGY ABSORPTION; FOURIER TRANSFORMATION; GAMMA DETECTION; INTERNATIONAL SPACE STATION; MONTE CARLO METHOD; NEUTRALINOS; NONLUMINOUS MATTER; QUANTUM GRAVITY; SHOWER COUNTERS; SPATIAL RESOLUTION; TIME-OF-FLIGHT METHOD
- Descriptors DEC
- ABSORPTION; BOSONS; CALCULATION METHODS; COSMIC RADIATION; DETECTION; ELEMENTARY PARTICLES; FIELD THEORIES; INTEGRAL TRANSFORMATIONS; INTERACTIONS; IONIZING RADIATIONS; MASSLESS PARTICLES; MATTER; MEASURING INSTRUMENTS; PARTICLE INTERACTIONS; PHOTONS; POSTULATED PARTICLES; PRIMARY COSMIC RADIATION; QUANTUM FIELD THEORY; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; RESOLUTION; SATELLITES; SIMULATION; SORPTION; SPACE VEHICLES; SPARTICLES; TRANSFORMATIONS; VEHICLES
Optional Information
- Notes
- 91 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses