FIRST LIGHT

Joanne Baker

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FIRST LIGHT

机译：初光

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Cosmologists couldn't have wished for a better anniversary present. Almost 50 years to the day after the first detection of the Big Bang's afterglow - a faint glimmer of long-wavelength photons known as the cosmic microwave background (CMB) - the field has been galvanized by what may be the last major discovery from the radiation. On 17 March, astronomers announced that a microwave detector at the South Pole had recorded the first signs of primordial 'B modes': subtle, swirling patterns in the CMB data that were imprinted during the early history of the Universe. The result was hailed as direct evidence of gravitational waves, ripples in the fabric of space-time that were produced by a sudden 'inflation' of the Universe a split second after the Big Bang. The most obvious question - is the B-mode signal real? - has sparked a race among teams running telescopes on the ground, in space and carried by balloons. "The name of the game is confirmation," says experimental cosmologist Amber Miller of Columbia University in New York City.

机译：宇宙学家不会希望有一个更好的周年纪念礼物。首次检测到大爆炸的余辉（即被称为宇宙微波背景（CMB）的微弱的长波长光子）之后的近50年时间里，这一领域受到了辐射的最后一次重大发现的刺激。 3月17日，天文学家宣布，南极的一个微波探测器记录了原始“ B模式”的最初迹象：在CMB数据中微妙的旋涡模式已在宇宙的早期历史中留下印记。这一结果被誉为引力波的直接证据，引力波是时空结构中的涟漪，这是宇宙在大爆炸之后一瞬间突然“膨胀”而产生的。最明显的问题-B模式信号真实吗？ -引发了在地面，太空和气球载运望远镜的团队之间的竞赛。纽约市哥伦比亚大学的实验宇宙学家安伯·米勒说：“游戏的名字是确定的。”

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《Nature》 |2014年第7500期|276-278|共3页
作者
Joanne Baker;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
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7. Report drawn up on behalf of the Committee on Economic and Monetary Affairs on proposals from the Commission of the European Communities to the Council on the elimination of technical barriers to trade in particular, proposals for directives on the approximation of laws of theMember States relating to:safety belts and restraint systems and head restraints of seats of motorvehicles (Doe. 464/74);headlights for motor vehicles emitting an asymmetrical passing beam or adriving beam or both, and to incandescent electric lamps for suchheadlights (Doe. 452/74);side lights, rear lights and stop lights for motor vehicles and their trailers(Doe. 457/74);the rear registration-plate illuminating device of motor vehicles and theirtrailers (Doe. 450/74);towing hooks on motor vehicles (Doe. 462/74);the roll-over protection structures of wheeled agricultural or forestrytractors (Doe. 456/74);the type-approval of motorcycles (Doe. 463/74 );alcoholometers and hydrometers for alcohol and alcohol tables(Doe. 406/74);electromedical equipment and medical X-ray equipment operating at 10to 400 kV (Doe. 453/74);common provisions for constructional plant and equipment; themeasurement of the sound level of constructional plant and equipment;the permissible sound level for pneumatic concrete-breakers andjackhammers (Doe. 454/74); 'appliances using gaseous fuels, safety and control devices for theseappliances and methods for inspecting these appliances and appliancesusing gaseous fuels for the instantaneous production of hot water forsanitary purposes (Doe. 459/74). Working Documents 1974-1975, Document 517/74, 10 March 1975 [O] . 1975

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