Digital Repository

Mass modeling and search for transients with AstroSat-CZTI

Show simple item record

dc.contributor.advisor Bhalerao, Varun en_US
dc.contributor.author BALASUBRAMANIAN, ARVIND en_US
dc.date.accessioned 2018-05-08T03:33:10Z
dc.date.available 2018-05-08T03:33:10Z
dc.date.issued 2018-03 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/928
dc.description.abstract Astrophysical transients are short timescale events, usually lasting from a few seconds to a few hundred seconds, and are sometimes associated with cataclysmic events like death of a star or merger of compact objects. This thesis focuses on the search for and study of astrophysical transients with the Cadmium Zinc Telluride Imager (CZTI), on-board AstroSat. At energies higher than 100 keV, CZTI functions as an open detector and is sensitive to transients from all over the sky. This makes it a very sensitive detector for various classes of astrophysical transients: Gamma Ray Bursts (GRBs), and even X-ray counterparts to gravitational wave events. As an all-sky detector, CZTI can detect transients shining through the satellite body. The analysis, localisation, and interpretation of this data requires a complete understanding of the absorption, scattering, and reprocessing of the incident photons by various elements of the satellite. Such interactions are impossible to compute analytically in a photon starved regime, since many of them are non-deterministic. This warrants the need for a simulation. A simulated ``mass model'' of the satellite has been developed using the GEANT4 simulation package. The scope of this thesis is to enhance the mass model and use it for studying various transients detected by CZTI, and to place strong upper limits on others. en_US
dc.language.iso en en_US
dc.subject 2018
dc.subject AstroSat en_US
dc.subject CZTI en_US
dc.subject transients en_US
dc.subject GRB en_US
dc.subject Electromagnetic follow-up of gravitational waves en_US
dc.subject LIGO en_US
dc.subject Physics en_US
dc.title Mass modeling and search for transients with AstroSat-CZTI en_US
dc.type Thesis en_US
dc.type.degree BS-MS en_US
dc.contributor.department Dept. of Physics en_US
dc.contributor.registration 20131007 en_US


Files in this item

This item appears in the following Collection(s)

  • MS THESES [1705]
    Thesis submitted to IISER Pune in partial fulfilment of the requirements for the BS-MS Dual Degree Programme/MSc. Programme/MS-Exit Programme

Show simple item record

Search Repository


Advanced Search

Browse

My Account