澳洲大型電波望遠鏡啟用　宇宙探索新生力軍

在澳洲極內陸地帶，天文學家建設的澳洲平方公里電波望遠鏡( Australia Square Kilometre Array Pathfinder ,ASKAP)已正式啟用，對於太空人探索宇宙、尋找黑洞與尋找新銀河等工作上有莫大助益。

電波望遠鏡用於接收天體無線電波段輻射，測量天體射電的強度、頻譜與偏振。60年代的天文學四大發現：脈衝星、類星體、宇宙微波背景輻射、星際有機分子，全是與電波望遠鏡有關，因此它可說是相當重要的發明。
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澳洲平方公里射電望遠鏡( Australia Square Kilometre Array Pathfinder ,ASKAP)，位在西澳大利亞，共有36座，直徑12公尺的碟狀天線。它們位在默奇森郡(Shire of Murchison)，占地5萬平方公里，且該處距離西澳大利亞州首府珀斯650公里，人煙罕至。正因該處人煙稀少，較少有人工電磁波或輻射，屬於「電波寧靜區」(radio quiet)，成為接收太空輻射的絕佳地點。os.tvboxnow.com0 W. J1 T6 ]6 w$ @
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實際上，這個項目只是一系列太空探索研究的前期項目。整個SKA項目將包含數千個碟狀探測裝置，分布在澳洲、紐西蘭與南非等世界各地。4 I: e" t, m8 Q7 C' }* A

澳洲國際科學研究組織( Australia's national scientific research organization)成員Brian Boyle表示，這些輻射將告訴我們獨特的宇宙消息，從行星的組成，到暗物質的生成原理等。os.tvboxnow.com4 Z+ D" K- c w4 j9 d6 j
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至於電波望遠鏡是否能夠探測外星生命？Boyle表示，這並非目前計畫的內容，未來有機會納入。

The 'colossal' radio telescope that can see more of the universe than ever before (and could even find alien life)

Australia Square Kilometre Array Pathfinder is made up of with an array of 36 antennas each 12 meters (40 feet) across
is also the first building block in the world's largest telescope, the Square Kilometre Array (SKA) which will be based in both Australia and South Africa

In the remote Australian outback, scientists have launched the world's fastest radio TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。5 u2 q/ J1 e' u! k8 x
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telescope which will exponentially increase astronomers' ability to survey the universe, mapping black holes and shedding new light on the origins of galaxies.

The Australia Square Kilometre Array Pathfinder (ASKAP), with an array of 36 antennas each 12 meters (40 feet) across, started peering into the universe on Friday from a far-flung cattle station in Western Australia state.

The £96m ($155.18 million) telescope will 'listen' to radio waves from the cosmos that might give astronomers insights into the beginnings of the universe.tvb now,tvbnow,bttvb7 G. H6 T3 ~* C" Z5 N

On its first day in full operation, ASKAP will collect more data than is currently contained in all current radio astronomy archives or the U.S. Library of Congress.
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'Radio waves tell us unique things about the cosmos, about the gas from which stars were formed, and about exotic objects, pulsars and quasars, that really push the boundaries of our knowledge of the physical laws in the universe,' Brian Boyle, the director of the project at Australia's national scientific research organization, told reporters this week.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。" Q/ R$ i/ F3 G9 i
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The ASKAP telescope is located in the Shire of Murchison, an area of 50,000 square kms (19,300 square miles), or the size of Costa Rica, with barely 120 people.

The location is ideal because it is 'radio quiet', or lacks man-made radio signals that would interfere with the antennas picking up astronomical radio signals.

Using new 'radio cameras' called phased array feeds, the telescope will be able scan the sky much more rapidly than existing radio telescopes and will give the telescope a field of view about 150 times the area of the full Moon.公仔箱論壇: b( X8 X( d6 s" S; T

ASKAP is also the first building block in the world's largest telescope, the Square Kilometre Array (SKA) which will be based in both Australia and South Africa.公仔箱論壇6 _3 D% ~: F7 P

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ASKAP is also the first building block in the world's largest telescope, the Square Kilometre Array (SKA) which will be based in both Australia and South Africa.公仔箱論壇# ]7 C& N! D; a& ]- K

Construction of the SKA will begin in 2016 and Australia will add another 60 antennas to its current 36 as part of the project.tvb now,tvbnow,bttvb7 ^5 r Y K6 O/ S
The ability of the ASKAP telescope to scan so much of the universe will generate immense amounts of data.

On its first day in full operation, ASKAP will collect more data than is currently contained in all current radio astronomy archives or the U.S. Library of Congress.

Using existing radio telescopes, an image of Centaurus A, the closest galaxy to earth with a black hole, would have required some 400 images, two years of observation, and 10,000 hours of computer time. " o) ~+ ~0 z: s
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The ASKAP will take a mere two images and five minutes of observation and computer time.
ASKAP is already fully booked for the next five years with scientists from all over the world using it for research.
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Some of the first areas of enquiry will include a census of all galaxies within two billion light years, which may shed light on how the Milky Way was formed.

One of the antenna of the Australian SKA Pathfinder telescope.
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Another research project will look for black holes, which astronomers think may be the seeds of galaxies.tvb now,tvbnow,bttvb* ~9 B, t) ^, i/ j: I0 T. G% k

The radio telescope will also probe objects such as pulsars, which Boyle described as 'balls of star stuff that are so tightly packed together that a teaspoonful would weigh more than the mass of humanity'.
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But will the telescope be looking for extra terrestrial life?
'It's not a primary of many of these surveys, but it's certainly a secondary goal that you almost get for free,' Boyle said.

'As you're surveying the sky, particularly over wide areas of sky looking for objects, you are also increasing the search volume for signals from extraterrestrial life.'

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The Australia Square Kilometre Array Pathfinder (ASKAP), with an array of 36 antennas each 12 meters (40 feet) across.2 X% S$ B5 S0 ~/ N( C* R

The telescope will also search for alien life, although that is not its primary purpose.
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澳洲大型電波望遠鏡啟用 宇宙探索新生力軍

澳洲大型電波望遠鏡啟用　宇宙探索新生力軍