STRATOSPOLCA: stratospheric polarimetry with cadmium telluride array
by
Sala de Conferências
Departamento de Física FCTUC
In the multi messenger era, gamma ray polarimetry may contribute to a wider understanding of gamma ray transients associated to gravitational waves detection, as well as to understand the physical processes, geometry and magnetic fields of sources such as pulsars, solar flares, active galactic nuclei or galactic black holes However, the noise rate in the Compton regime domain 100 keV up to 1 MeV) is higher than the source signal by up to two orders of magnitude, at balloon altitude Herein, we present the STRATOSPOLCA experiment launched in the September 29 th from the Esrange Space Center, near Kiruna, Sweden, on board an ESA Bexus flight to address and analyze the background noise in the perspective of Compton polarimetry The STRATOSPOLCA instrument is based on a small CdTe 5 × 5 pixels (each 2 × 2 × 10 mm 3 prototype accommodated in the balloon gondola that recorded the stratospheric gamma ray background discriminating between single, double and multiple events during the flight up to a maximal altitude of 27 7 km.
Filipe Veloso e Pedro Costa
