NASA pointed their telescopes to the Andromeda Galaxy- they never expected to find this

NASA 透過望遠鏡在仙女座星系發現出乎意料的東西

 

Scientists using NASA’s Fermi telescope have found something mesmerizing while exploring the Andromeda Galaxy. The Fermi telescope spotted a mysterious signal emitting from the center of the galaxy. While there are a couple of theories as to what the origin of the signal is, experts are still not able to solve the mystery.

 

科學家用NASA 的費米太空望遠鏡的(Fermi telescope)在仙女座星系 Andromeda Galaxy)發現迷人的東西。費米太空望遠鏡在仙女座星系的中央捕捉到神秘的發光信號。雖然對於這個信號的來源已經有一些理論解釋,但是專家還是無法真正解決這個謎團。

 

According to scientists, the mysterious signals could be evidence of DARK MATTER. Astronomers state that the signal captured by NASA’s Fermi Gamma-ray Space Telescope is eerily similar to the gamma-rays which have been observed in the past at the center of the Milky Way. Interestingly, scientists say that the signal could be coming from numerous sources which they have yet to identify.

One of the options is dark matter say astronomers. It is believed that dark matter accumulates in galaxies’ innermost regions.

According to reports from NASA, the gamma-rays observed in the data obtained by Fermi have an UNEXPECTED distribution. Furthermore, instead of spreading out across the galaxy, for some reason they are concentrated at the center.

 

根據科學家們的說法,這些神秘的訊號可以是證明暗物質的證據。天文學家表示,這個被NASA 的費米伽瑪射線太空望遠鏡捕捉到的訊號,很詭異地,竟然與之前曾在銀河系中央觀察到的伽馬射線很相似。有趣的是,科學家說這個訊號可能是從還沒被辨識出來的多種來源發出的。

 

天文學家提供的答案選項之一是暗物質。暗物質被認為累積在星系的最深處。根據NASA 的報告,這個由費米伽瑪射線太空望遠捕捉到的伽馬射線有出乎意料的頻率。而且,它並沒有散佈在整個星系中,而是因為某種理由聚集在中央。

 

 

Fermi Detects Gamma-ray Puzzle from M31

費米太空望遠偵測到仙女座星系的謎樣伽瑪射線

 

https://www.youtube.com/watch?v=Ndr7nQhuQ4Y

 

Scientists believe that the observed rays are some of the most powerful energy form of light, and are produced when cosmic rays interact with surrounding interstellar gas clouds and light emitting from the stars.

However, researchers are not sure what is producing these rays. One possibility is dark matter, the elusive substance that is responsible for 27 percent of the universe.

We expect dark matter to accumulate in the innermost regions of the Milky Way and other galaxies, which is why finding such a compact signal is very exciting,” said lead scientist Pierrick Martin, an astrophysicist at the National Center for Scientific Research and the Research Institute in Astrophysics and Planetology in Toulouse, France. M31 will be a key to understanding what this means for both Andromeda and the Milky Way.”

 

However, another possibility are pulsars located at the center of the Andromeda Galaxy. Pulsars are massive, spinning neutron stars that are believed to weigh twice as much as our sun. Interestingly, they are also believed some of the densest objects ever identified in the universe. Some of them emit most of their energy in gamma rays.

 

科學家相信這些被觀測到的射線是光的最強能量型態,當宇宙射線與周圍的星際氣體雲交互作用、光從星體發射的時候就會產生這樣的型態。然而,研究人員並不確定這些射線是怎麼產生的。其中一個可能是暗物質,這個難以捉摸的物質佔據了宇宙的百分之27。

 

首席科學家Pierrick Martin是一位法國圖盧茲的國家科學研究中心和天體物理學及行星學研究所的天體物理學家,他說:「我們認為暗物質累積在銀河系和其他星系的最深處區域,所以發現這個緊湊的訊號對我們來說是一件很興奮的事。仙女座星系會是了解這個現象的意義的鑰匙,不只可了解它對仙女座星系的意義,也可了解它對銀河系的意義。」

 

另一個可能則是脈衝星位在仙女座星系的中央。脈衝星很巨大,是中子星的一種,被認為比我們的太陽重兩倍。有趣的是,它們也被認為是目前可知宇宙中密度最高的物體。有些脈衝星以伽瑪射線的方式發出它們大部分的能量。

 

Scientists say that due to the distance of M31 (Andromeda), which is located at a staggering 2.5 million light years from us, it is extremely difficult to spot individual pulsars.

Researchers are hoping that data obtained from observations of the Milky Way and Andromeda could help them get to the bottom of the mystery.

Our galaxy is so similar to Andromeda, it really helps us to be able to study it, because we can learn more about our galaxy and its formation,” said co-author Regina Caputo, a research scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

It’s like living in a world where there’s no mirrors but you have a twin, and you can see everything physical about the twin.”

Scientists say that even though more observations are necessary to determine the source of the gamma-ray’s, the new discovery provides an exciting starting point to learn more about both galaxies, and perhaps about the still elusive nature of dark matter, writes Phys.org.

We still have a lot to learn about the gamma-ray sky,” Caputo said. The more information we have, the more information we can put into models of our own galaxy.”

 

科學家說,仙女座星系距離我們有250 萬光年,因為仙女座星系的距離,要指出特定的一顆脈衝星是極為困難的。研究人員希望從觀察銀河系和仙女座星系得來的資料可以幫他們解開謎團。共同作者Regina Caputo是位在馬里蘭州格林貝爾特的NASA 戈達德太空飛行中心的研究科學家,他說:「這就像是生活在一個這樣的世界裡:在那裡沒有鏡子,但是你有一個雙胞胎手足,而你可以在物理層面上看到那個雙胞胎的一切。」

 

Phys.org:「科學家說,雖然為了確定這個伽瑪射線的來源,更多的觀察是必要的,但可以確定的是,這個新的發現為以後更深入地瞭解星系提供了一個令人興奮的起點,而且,或許也可以讓人更了解依然難以捉摸的暗物質。」

 

NASA研究科學家Regina Caputo:「我們對於伽瑪射線的天空還有很多要學的,越多資訊被我們掌握,就有越多資訊可以被放進我們自己的星系模型中。」

 

 

來源:ancientcode