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Study of gamma ray signals from primordial black hole evaporation

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dc.contributor.advisorDib Venturelli, Claudio (Profesor Guía)
dc.contributor.advisorZerwekh Arroyo, Alfonso Raúl (Profesor Correferente)
dc.contributor.advisorReisenegger, Andreas (Profesor Correferente)
dc.contributor.authorRecabarren Vergara, Luis Matías
dc.contributor.departmentUniversidad Técnica Federico Santa María. Departamento de Físicaes_CL
dc.coverage.spatialCasa Central Valparaísoes_CL
dc.date.accessioned2022-12-02T11:45:16Z
dc.date.available2022-12-02T11:45:16Z
dc.date.issued2022-11
dc.description.abstractIn this work, we study the photon spectrum produced by the Hawking radiation from a primordial black hole (PBH). We focus on the last stages before full evaporation. The spectrum is estimated using the black body approach and Hawking’s emission formula. The connection between both descriptions is discussed. Furthermore, through analytical approximations for the greybody factors at the high and low energy limits, we time-integrate the primary spectrum along the PBH lifetime. As a result, we obtain a correction to the primary photon time-integrated spectrum commonly used in the literature. In addition, due to the BH emission of free quarks, we estimate, under rough approximations, the pion production from quark hadronization. As a consequence, a secondary photon spectrum is obtained through π0 → γγ decay. These calculations for the spectral emission are compared with spectra obtained with simulations using BlackHawk. Based on the previous analysis, we estimate the number of photons per km2, within a certain detection energy interval, and during a fixed observation time, that eventually reach the Earth’s atmosphere. Finally, with the help of Corsika, we run simulations of very high energy gamma rays to study the basic features of the electromagnetic showers that are produced in the atmosphere.es_CL
dc.description.degreeMAGISTER EN CIENCIAS MENCION FISICAes_CL
dc.description.programMAGÍSTER EN CIENCIAS, MENCIÓN FÍSICAes_CL
dc.format.extent75 H.es_CL
dc.format.mimetypeapplication/pdf
dc.identifier.barcode185930564UTFSMes_CL
dc.identifier.urihttps://hdl.handle.net/11673/54937
dc.rights.accessRightsA. Internet abierta repositorio.usm.cl y otros repositorios a que la USM se adscriba.
dc.subjectGAMMA RAYSes_CL
dc.subjectPRIMORDIAL BLACK HOLESes_CL
dc.subjectHAWKING RADIATIONes_CL
dc.titleStudy of gamma ray signals from primordial black hole evaporationes_CL
dc.typeTesis de Postgrado
dspace.entity.typePublication
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