Non-dropframe (talk | contribs) |
216.100.95.193 (talk) |
||
Line 11: | Line 11: | ||
Each year since its first data capture in 2006, the Event Horizon Telescope (EHT) array has moved to add new sites around the world. As the EHT adds more observatories to its global network of radio telescopes, the first image of the Milky Way's [[supermassive black hole]], [[Sagittarius A*]], could be produced as soon as Spring 2016,<ref name="O'Neil2015">{{cite news |last=O'Neill |first=Ian |url=http://news.discovery.com/space/astronomy/event-horizon-telescope-will-probe-spacetimes-mysteries-150702.htm |title=Event Horizon Telescope Will Probe Spacetime's Mysteries |work=Discovery News |date=2 July 2015 |accessdate=2015-08-21 }}</ref> and it will also test Einstein's [[general relativity]] at the extreme.<ref name="O'Neil2015"/> |
Each year since its first data capture in 2006, the Event Horizon Telescope (EHT) array has moved to add new sites around the world. As the EHT adds more observatories to its global network of radio telescopes, the first image of the Milky Way's [[supermassive black hole]], [[Sagittarius A*]], could be produced as soon as Spring 2016,<ref name="O'Neil2015">{{cite news |last=O'Neill |first=Ian |url=http://news.discovery.com/space/astronomy/event-horizon-telescope-will-probe-spacetimes-mysteries-150702.htm |title=Event Horizon Telescope Will Probe Spacetime's Mysteries |work=Discovery News |date=2 July 2015 |accessdate=2015-08-21 }}</ref> and it will also test Einstein's [[general relativity]] at the extreme.<ref name="O'Neil2015"/> |
||
Data collected on the hard drives must be transported via jet airliner from the various telescopes to the MIT [[Haystack Observatory]] in Massachusetts, USA, where the data are cross-compared and analyzed on a grid computer made of about 800 CPUs all connected through a 40Gbps network.<ref>{{cite news |last=Mearian |first=Lucas |url=http://www.computerworld.com/article/2972251/space-technology/massive-telescope-array-aims-for-black-hole-gets-gusher-of-data.html |title=Massive telescope array aims for black hole, gets gusher of data |work=Computer World |date=18 August 2015 |accessdate=2015-08-21 }}</ref> |
Data collected on the hard drives must be transported via jet airliner from the various telescopes to the MIT [[Haystack Observatory]] in Massachusetts, USA, where the data are cross-compared and analyzed on a grid computer made of about 800 CPUs all connected through a massive turd 40Gbps network.<ref>{{cite news |last=Mearian |first=Lucas |url=http://www.computerworld.com/article/2972251/space-technology/massive-telescope-array-aims-for-black-hole-gets-gusher-of-data.html |title=Massive telescope array aims for black hole, gets gusher of data |work=Computer World |date=18 August 2015 |accessdate=2015-08-21 }}</ref> |
||
==Contributing institutes== |
==Contributing institutes== |
Revision as of 21:38, 22 September 2015
The Event Horizon Telescope (EHT) is a project to create a large millimeter telescope array by using global network of radio telescopes and combining data from several very-long-baseline interferometry (VLBI) stations around the Earth to observe the immediate environment of the Milky Way's supermassive black hole Sagittarius A* with angular resolution comparable to the event horizon.[1][2][3][4][5]
Overview
The EHT is composed of many radio observatories or radio telescope facilities around the world to produce a high-sensitivity, high angular resolution event horizon telescope. Through the technique of Very Long Baseline Interferometry (VLBI), many independent radio antennae separated by hundreds or thousands of miles can be used in concert to create a 'virtual' telescope with a diameter of the entire planet.[6] The effort includes development and deployment of submillimeter dual polarization receivers, highly stable frequency standards to enable very-long-baseline interferometry (VLBI) at 230–450 GHz, higher-bandwidth VLBI backends and recorders, as well as commissioning of new submillimeter VLBI sites.[7]
Each year since its first data capture in 2006, the Event Horizon Telescope (EHT) array has moved to add new sites around the world. As the EHT adds more observatories to its global network of radio telescopes, the first image of the Milky Way's supermassive black hole, Sagittarius A*, could be produced as soon as Spring 2016,[6] and it will also test Einstein's general relativity at the extreme.[6]
Data collected on the hard drives must be transported via jet airliner from the various telescopes to the MIT Haystack Observatory in Massachusetts, USA, where the data are cross-compared and analyzed on a grid computer made of about 800 CPUs all connected through a massive turd 40Gbps network.[8]
Contributing institutes
Some contributing institutions are:[9]
- ALMA
- APEX
- Academia Sinica Institute for Astronomy and Astrophysics
- Arizona Radio Observatory, University of Arizona
- Caltech Submillimeter Observatory
- Combined Array for Research in Millimeter-wave Astronomy
- European Southern Observatory
- Georgia State University
- Goethe-Universität Frankfurt am Main
- Greenland Telescope
- Harvard–Smithsonian Center for Astrophysics
- Haystack Observatory, MIT
- Institut de Radio Astronomie Millimetrique
- Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE)
- Joint Astronomy Centre - James Clerk Maxwell Telescope
- Large Millimeter Telescope
- Max Planck Institut für Radioastronomie
- National Astronomical Observatory of Japan
- National Radio Astronomy Observatory
- National Science Foundation
- University of Massachusetts, Amherst
- Onsala Space Observatory
- Perimeter Institute
- Radio Astronomy Laboratory, UC Berkeley
- Radboud University
- Shanghai Astronomical Observatory (SHAO)
- Universidad de Concepción
- Universidad Nacional Autónoma de México (UNAM)
- University of California - Berkeley (RAL)
- University of Chicago (South Pole Telescope)
- University of Illinois Urbana-Champaign
- University of Michigan
References
- ^ Viewing the Shadow of the Black Hole at the Galactic Center
- ^ Polarimetric Imaging of the Massive Black Hole at the Galactic Center
- ^ Main project website
- ^ Overbye, Dennis (8 June 2015). "Black Hole Hunters". NASA. Retrieved 8 June 2015.
- ^ Overbye, Dennis; Corum, Jonathan; Drakeford, Jason (8 June 2015). "Video: Peering Into a Black Hole". New York Times. ISSN 0362-4331. Retrieved 9 June 2015.
- ^ a b c O'Neill, Ian (2 July 2015). "Event Horizon Telescope Will Probe Spacetime's Mysteries". Discovery News. Retrieved 2015-08-21.
- ^ MIT Haystack observatory
- ^ Mearian, Lucas (18 August 2015). "Massive telescope array aims for black hole, gets gusher of data". Computer World. Retrieved 2015-08-21.
- ^ Event Horizon Telescope - Collaborators. August 2015.
Further reading
- Non-technical: The Black Hole at the Center of Our Galaxy (2001), Fulvio Melia (Princeton University Press), ISBN 0691095051
- Technical: The Galactic Supermassive Black Hole (2008), Fulvio Melia (Princeton University Press), ASIN B008VQXCN2
External links
- Official website
- Peering into a Black Hole, New York Times video 2015