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Cherenkov Telescope Array

An observatory for ground-based gamma-ray astronomy

In the field of very high energy gamma-ray astronomy (VHE, energies >100 GeV), the instruments H.E.S.S., MAGIC and VERITAS have been driving the development in recent years. The spectacular astrophysics results from the current Cherenkov instruments have generated considerable interest in both the astrophysics and particle physics communities and have created the desire for a next-generation, more sensitive and more flexible facility, able to serve a larger community of users. The proposed CTA is a large array of Cherenkov telescopes of different sizes, based on proven technology and deployed on an unprecedented scale. It will allow significant extension of our current knowledge in high-energy astrophysics.
CTA aims to become a cornerstone in a networked multi-wavelength, multi-messenger exploration of the high-energy non-thermal universe.

The aims of the CTA can be roughly grouped into three main themes, serving as key science drivers:
1. Understanding the origin of cosmic rays and their role in the Universe
2. Understanding the nature and variety of particle acceleration around black holes
3. Searching for the ultimate nature of matter and physics beyond the Standard Model


Centaurus A (NGC 5128) is a the largest galaxy in the neighborhood of the Milky Way. The main galaxy has collided with a smaller galaxy about one hundred million years ago. Possibly as a result of this interaction, the plasma jet has been fed with fresh material, turning Centaurus A into an object which is very active across the entire electromagnetic spectrum, from low-energy radio waves to the highest energy gamma-rays.
The Crab nebula in the constellation Taurus is a remnant of a supernova-explosion which was observed in 1054 AC. This is the brightest source of high-energy gamma-ray emission.
Many astronomical observations and well-founded theories of particle physics suggest that most of the matter in the universe is not visible directly and composed of "dark matter". The precise nature of this matter is unknown. Theoretical models suggest that clusters of dark matter may only emit light of very high energy. CTA shall be able to detect such clusters of dark matter.


 Site Structure


The CTA Portal is divided into several parts with different permission levels:
•    Internal
•    Consortium Bodies
•    Working Groups (with sub-sites to all working groups)
•    Lists
•    Helpdesk

All sites and each working group have their own
•    pages
•    libraries (for working documents within groups)
•    lists (such as members lists, the mailman lists, calendars..)
•    discussion forum (to exchange information within work groups)

On each site you can find a link to the Records Centre: Central document repository for generally released internal documents.

The access control is set independently and autonomously for each sub-site. Please contact the help desk in case you forgot your personal access data. We strongly recommend not to use the CTA general username and standard password.