Press Release
ESO to Host Cherenkov Telescope Array-South at Paranal
ESO enters partnership with the world’s largest gamma-ray observatory
20 December 2018
ESO’s Director General and the Managing Director of the Cherenkov Telescope Array (CTA) Observatory have signed the agreement needed for CTA’s southern hemisphere array to be hosted near ESO’s Paranal Observatory in Chile. In addition, the Chilean Government and ESO have signed the agreement enabling ESO to host this new telescope within ESO’s Paranal Observatory site. This will allow the world's most ambitious gamma-ray observatory to access not only Chile’s pristine observing conditions, but also ESO’s state-of-the-art infrastructure, expertise, and facilities. ESO will operate the facility on behalf of the CTA Observatory and its Members.
The Cherenkov Telescope Array (CTA) is the next-generation ground-based instrument designed to detect very high energy gamma rays, with sites in both the southern and northern hemispheres. Gamma rays are electromagnetic radiation of very high energy, emitted by the hottest and most extreme objects in the Universe — supermassive black holes, supernovae and maybe even remnants of the Big Bang.
On 19 December 2018, Federico Ferrini, Managing Director of the Cherenkov Telescope Array Observatory (CTAO), met with ESO’s Director General, Xavier Barcons, at the ESO offices in Santiago, Chile. Together with ESO’s Director for Operations, Andreas Kaufer, and other ESO members of personnel, they signed the agreement for the construction and operation of CTA’s southern array within ESO’s Paranal site in northern Chile.
Deputy Minister of Foreign Relations of Chile Carolina Valdivia Torres and ESO’s Director General also signed the agreement that enables ESO to host CTA-South at the Paranal Observatory site, as an ESO Programme.
A third agreement was already signed on 17 December 2018 between the Chilean National Commission for Science and Technology (CONICYT) and CTAO. This cooperation agreement aims at fostering astronomical research in Chile, capitalising on the opening of a new observational window as enabled by CTA-South.
With these three agreements in place, the CTAO will be able to begin construction on the southern site. The Instituto de Astrofisica de Canarias will host CTA’s northern hemisphere array at the Observatorio del Roque de los Muchachos on the island of La Palma, Spain. Construction of both the northern and southern arrays is expected to begin in 2020.
“Operating CTA at Paranal will open a new window on the Universe for astronomers in the ESO Member States, Chile, and worldwide,” commented ESO’s Director General, Xavier Barcons. “ESO’s rich experience of maintaining and operating fleets of telescopes in remote areas will be invaluable for the CTA project.”
The southern site of CTA is only 11 kilometres southeast of the location of the Very Large Telescope at ESO's Paranal Observatory in the Atacama Desert, and only 16 kilometres from the construction site of the upcoming Extremely Large Telescope. This is one of the driest and most isolated regions on Earth — an astronomical paradise. In addition to the ideal conditions for year-round observation, installing CTA at the Paranal Observatory provides it with the advantages of ESO’s infrastructure. The existing infrastructures and facilities, and ESO’s long-lasting experience spearheading international astronomical projects in Chile, will all support the construction and operation of the new telescope array.
"Thanks to the agreements signed today, the CTAO will not only benefit from Chile's spectacular night sky but also from ESO's facilities and deep experience, which will be an invaluable contribution to the realisation of this ambitious system of telescopes,” said Federico Ferrini. “The partnership between ESO and the CTAO will serve as the cornerstone in the fast-growing era of multi-messenger astrophysics, providing an opportunity for further collaboration with other large infrastructures, such as the Atacama Large Millimeter/submillimeter Array (ALMA), the Square Kilometre Array (SKA) and state-of-the-art gravitational-wave interferometers."
Current Cherenkov telescope arrays, sensitive to very high-energy gamma rays, consist of only a handful of individual telescopes, but CTA — with its larger collecting area and excellent angular resolution — will be the largest and most sensitive array of gamma-ray telescopes in the world. It will detect gamma rays with unprecedented accuracy and will be 10 times as sensitive as any of its predecessors.
Although the Earth’s atmosphere prevents gamma rays from reaching the surface, CTA’s mirrors and high-speed cameras will capture the short-lived flashes of the eerie blue Cherenkov radiation produced when gamma rays interact with Earth’s atmosphere. By detecting this Cherenkov light, scientists will be able to trace the gamma ray back to its cosmic source.
The scientific scope of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. CTA will explore the extreme Universe, probing environments from the immediate neighbourhood of black holes to the cosmic voids on the largest scales. It may even lead to brand new physics as it studies the nature of matter and forces beyond the standard model.
CTA will operate across two sites, one in each hemisphere, allowing it to maximise its coverage of the night sky. When construction is complete, the CTAO will comprise 19 telescopes in the northern hemisphere — located at the Observatorio del Roque de los Muchachos on the island of La Palma in the Canary Islands — and 99 telescopes in the southern hemisphere.
More than 1400 scientists and engineers from countries across five continents are engaged in the scientific and technical development of CTA. The shareholders of the current legal entity — CTAO gGmbH — are the representatives of ministries and funding agencies from Australia, Austria, Czechia, France, Germany, Italy, the Netherlands, Japan, Slovenia, South Africa, Spain, Switzerland and the United Kingdom [1]. They are currently preparing for the establishment of a European Research Infrastructure Consortium — the CTAO ERIC — which will then construct the immense observatory. The ERIC will be composed of CTAO's Member States and associated countries.
Notes
[1] The Netherlands and South Africa are participating in the CTAO gGmbH as observers.
More information
CTA is a global initiative to build the world’s largest and most sensitive high energy gamma-ray observatory. More than 1400 scientists and engineers from countries across five continents (Armenia, Australia, Austria, Bulgaria, Brazil, Canada, Chile, Croatia, Czechia, Finland, France, Germany, Greece, India, Ireland, Italy, Japan, Mexico, Namibia, the Netherlands, Norway, Poland, Slovenia, South Africa, Spain, Sweden, Switzerland, Thailand, the United Kingdom, the United States of America and Ukraine) and more than 200 research institutes are participating in the CTA project. CTA will be the foremost global observatory for very high energy gamma-ray astronomy in the next decade and beyond, as well as the first ground-based gamma-ray astronomy observatory open to the astronomical and particle physics communities worldwide.
ESO is the foremost intergovernmental astronomy organisation in Europe and the world’s most productive ground-based astronomical observatory by far. It has 16 Member States: Austria, Belgium, Czechia, Denmark, France, Finland, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland and the United Kingdom, along with the host state of Chile and with Australia as a Strategic Partner. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world-class observing sites in Chile: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope and its world-leading Very Large Telescope Interferometer as well as two survey telescopes, VISTA working in the infrared and the visible-light VLT Survey Telescope. ESO is also a major partner in two facilities on Chajnantor, APEX and ALMA, the largest astronomical project in existence. And on Cerro Armazones, close to Paranal, ESO is building the 39-metre Extremely Large Telescope, the ELT, which will become “the world’s biggest eye on the sky”.
Links
Contacts
Megan Grunewald
Outreach and Communications Officer / CTAO gGmbH
Heidelberg, Germany
Tel: +49 6221 516471
Email: mgrunewald@cta-observatory.org
Calum Turner
ESO Public Information Officer
Garching bei München, Germany
Tel: +49 89 3200 6655
Cell: +49 151 1537 3591
Email: pio@eso.org
Mariya Lyubenova
ESO Outreach Astronomer
Garching bei München, Germany
Tel: +49 89 3200 6188
Email: mlyubeno@eso.org
About the Release
Release No.: | eso1841 |
Name: | Cherenkov Telescope Array |
Type: | Unspecified : Technology : Observatory : Facility |
Facility: | Cherenkov Telescope Array |
Our use of Cookies
We use cookies that are essential for accessing our websites and using our services. We also use cookies to analyse, measure and improve our websites’ performance, to enable content sharing via social media and to display media content hosted on third-party platforms.
ESO Cookies Policy
The European Organisation for Astronomical Research in the Southern Hemisphere (ESO) is the pre-eminent intergovernmental science and technology organisation in astronomy. It carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities for astronomy.
This Cookies Policy is intended to provide clarity by outlining the cookies used on the ESO public websites, their functions, the options you have for controlling them, and the ways you can contact us for additional details.
What are cookies?
Cookies are small pieces of data stored on your device by websites you visit. They serve various purposes, such as remembering login credentials and preferences and enhance your browsing experience.
Categories of cookies we use
Essential cookies (always active): These cookies are strictly necessary for the proper functioning of our website. Without these cookies, the website cannot operate correctly, and certain services, such as logging in or accessing secure areas, may not be available; because they are essential for the website’s operation, they cannot be disabled.
Functional Cookies: These cookies enhance your browsing experience by enabling additional features and personalization, such as remembering your preferences and settings. While not strictly necessary for the website to function, they improve usability and convenience; these cookies are only placed if you provide your consent.
Analytics cookies: These cookies collect information about how visitors interact with our website, such as which pages are visited most often and how users navigate the site. This data helps us improve website performance, optimize content, and enhance the user experience; these cookies are only placed if you provide your consent. We use the following analytics cookies.
Matomo Cookies:
This website uses Matomo (formerly Piwik), an open source software which enables the statistical analysis of website visits. Matomo uses cookies (text files) which are saved on your computer and which allow us to analyze how you use our website. The website user information generated by the cookies will only be saved on the servers of our IT Department. We use this information to analyze www.eso.org visits and to prepare reports on website activities. These data will not be disclosed to third parties.
On behalf of ESO, Matomo will use this information for the purpose of evaluating your use of the website, compiling reports on website activity and providing other services relating to website activity and internet usage.
Matomo cookies settings:
Additional Third-party cookies on ESO websites: some of our pages display content from external providers, e.g. YouTube.
Such third-party services are outside of ESO control and may, at any time, change their terms of service, use of cookies, etc.
YouTube: Some videos on the ESO website are embedded from ESO’s official YouTube channel. We have enabled YouTube’s privacy-enhanced mode, meaning that no cookies are set unless the user actively clicks on the video to play it. Additionally, in this mode, YouTube does not store any personally identifiable cookie data for embedded video playbacks. For more details, please refer to YouTube’s embedding videos information page.
Cookies can also be classified based on the following elements.
Regarding the domain, there are:
- First-party cookies, set by the website you are currently visiting. They are stored by the same domain that you are browsing and are used to enhance your experience on that site;
- Third-party cookies, set by a domain other than the one you are currently visiting.
As for their duration, cookies can be:
- Browser-session cookies, which are deleted when the user closes the browser;
- Stored cookies, which stay on the user's device for a predetermined period of time.
How to manage cookies
Cookie settings: You can modify your cookie choices for the ESO webpages at any time by clicking on the link Cookie settings at the bottom of any page.
In your browser: If you wish to delete cookies or instruct your browser to delete or block cookies by default, please visit the help pages of your browser:
Please be aware that if you delete or decline cookies, certain functionalities of our website may be not be available and your browsing experience may be affected.
You can set most browsers to prevent any cookies being placed on your device, but you may then have to manually adjust some preferences every time you visit a site/page. And some services and functionalities may not work properly at all (e.g. profile logging-in, shop check out).
Updates to the ESO Cookies Policy
The ESO Cookies Policy may be subject to future updates, which will be made available on this page.
Additional information
For any queries related to cookies, please contact: pdprATesoDOTorg.
As ESO public webpages are managed by our Department of Communication, your questions will be dealt with the support of the said Department.