Science with the Cherenkov Telescope Array: Synergies and Opportunities for Multi-wavelength and Multi-messenger cooperation

Data: 
05/12/2018 - 14:00 - 15:00
Local: 
Auditório "Prof. Dr. Paulo Benevides Soares", Bloco G

Science with the Cherenkov Telescope Array: Synergies and Opportunities for Multi-wavelength and Multi-messenger cooperation

 

Ulisses Barres de Almeida

CBPF

 

CTA will be the major global observatory for VHE gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles, to the search for dark matter. CTA is an explorer of the extreme universe, probing environments from the immediate neighbourhood of black holes, to cosmic voids on the largest scales. Covering photon energies from 20 GeV to 300 TeV, CTA will improve on all aspects of the performance with respect to current instruments, surveying the high-energy sky hundreds of times faster than previous TeV telescopes. The angular resolution of CTA will approach 1 arc-minute -- the best resolution of any instrument above the X-ray band --  allowing detailed imaging of a large number of gamma-ray sources. A one to two order-of-magnitude collection area improvement makes CTA a powerful instrument for time-domain astrophysics, three orders of magnitude more sensitive on hour timescales than Fermi-LAT. The observatory will operate arrays on sites in both hemispheres to provide full sky coverage and hence maximize its discovery potential of discovery of rare phenomena such as nearby supernovae, GRBs or gravitational wave transients. The first CTA telescope has just been inaugurated in the Canary Islands, and as more telescopes are added in the coming years, flexible operation will be possible, with sub-arrays available for specific tasks. All this considered, CTA will have important synergies with many of the new generation of major astronomical and astroparticle observatories. Multi-wavelength and multi-messenger approaches combining CTA data with those from other instruments will lead to a deeper understanding of the broad-band non-thermal properties of target sources, elucidating the nature, environment, and distance of gamma-ray emitters. In this talk I will introduce all the broad scope of CTA science, and present in detail the synergies and potential for cooperation with CTA from all wavebands and astronomical messengers.