科學家宣布再次探測到引力波

2016/06/28 瀏覽次數:11 收藏
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  在引力波汗青性的初次檢測到四個月以後,科學家們克日表現,他們直接探測到另外一個引力波正在囊括環球。

  科學家在加利福尼亞州聖地亞哥舉辦的美國天文學會集會的消息宣布談判表現,他們於2015年12月26日再次探測到了“時空構造中的蕩漾”--引力波。

  科學家表現,這次終極達到地球的引力波異常薄弱,它是由兩個二進制黑洞互相繞轉邊沿並合引發的,只管這兩個黑洞的質量分離僅相稱於8個和14個太陽質量。

  它們的並合發生了一個總質量為21個太陽質量、加倍偉大的扭轉黑洞,並將分外的1個太陽質量的能量轉化成引力能。

  科學家經由過程激光幹預引力波天文台在路易斯安那州和華盛頓州的兩個幹預儀探測到了這次的引力波。

  比擬之下,於2015年9月14日初次探測到的引力波,是由兩個29倍及36倍太陽質量的黑洞歸並構成的。

  引力波的發明,證明了阿爾伯特·愛因斯坦1915年提出的個廣義相對於論的龐大猜測,標記著引力波天文學新範疇的開始。

  【參考譯文】

  Four months after the historic first-ever detection of gravitational waves, scientists said they have directly detected another gravitational wave washing over the Earth.

  The gravitational waves, ripples in the fabric of spacetime, were observed for a second time on Dec. 26, 2015, at 03:38:53 UTC, scientists said at a press conference during the American Astronomical Society conference in San Diego, California.

  Scientists said that the incredibly faint ripple that eventually reached Earth was the result of the spinning dance of a binary black hole pair on the brink of merging, although this duo weighed only 8 and 14 solar masses.

  Their merger produced a single, more massive spinning black hole that is 21 times the mass of the sun, and transformed an additional sun's worth of mass into gravitational energy, they said.

  The scientists detected the gravitational waves using the twin Laser Interferometer Gravitational-wave Observatory (LIGO) interferometers, located in Livingston, Louisiana, and Hanford, Washington.

  In contrast, LIGO's historic first detection on Sept. 14, 2015 resulted from a merger of two black holes 36 and 29 times the mass of the sun.

  It confirmed a major prediction of Albert Einstein's 1915 general theory of relativity and marked the beginning of the new field of gravitational wave astronomy.