Novel Reflective Elements and Indirect Dark Matter Searches for MAGIC II and Future IACTs.

摘要: This thesis reports the activities performed during three y ears of PhD studentship at University Padova, Department Physics G. Galilei i n years 2005–08, under supervision M. Mariotti and A. Saggion, for MAGIC tele scope experiment CTA consortium. During PhD, my research activity focused on two principal occupations: a) construction installation mirrors I reflector , b) dark matter searches with . In both fields, was also extended t he Cherenkov Telescope Array (CTA), which represents future ob servational technique. The technological started development a technique that permitted realization large reflective surface aim co vering second telescope, already in 2 004. Special panels were de- veloped, form all–aluminum sandwiches thin alum inum sheets hexcell honeycomb layer, glued together epoxy structural weld autoclave milled novel diamond–milling this thesis, compl ete technical description mirror is reported, production s materials used. Each has different radius curvature according to its po sition reflector, an overall parabolic profile. procedures optimizatio mirrors’ curva- ture telescope’s one are described, short discussion optics 17 m diameter — like nd aberrations. After assembly their milling, several optical measurements took place, hereafter described. Following collaboration w ith INAF, studies made surfaces cold-sl umped glass-aluminum sandwich. Those have been interest next gene ration telescopes CTA, where vast will be necessary. Some quali ty those reported. Finally, aluminum d glass II scientific based study indirect detec tion MAGIC. possibility etect gamma–rays as result annihilation or decay particles. Ga mma–ray signal searched places concentrated, satellite galaxies Milky Way in- termediate mass black holes. brief introdu ction experimental evidences theoretical models. A unidentified EGRET sources (EGRET satellit e gamma–ray detection) defining who among could fulfill requirement being candidate observation. results observation, data analysis estimates upper limits flux source 3EG 1835, observed telescope 2005, partially limi ts parameter space. Following, observation g alaxy Willman 1 2008 Also case, only l imits produced, but they allow make interesting current statu searches. accurate prospects detection reported M AGIC II, about come, CTA.