Using a phenomenon called "gravitational lensing", the flow of gas that is blown out from the astronomical 10 billion light years away, observed for the first time in the world.

19, research group = observational astronomy = lecturer Misawa mechanism of General Education Dai Shin phenomenon called "gravitational lensing", the flow of gas that is blown out from the "(galactic nucleus) Quasar" celestial light years away 10 billion I announced that it had succeeded for the first time in the world to make use of, to observe a three-dimensional from two directions. I thought to affect gas such as star formation. I was "inside the gas complex in structure, is not there a cloud-like shade scale" in an interview with the instructor Misawa was held in Tokyo.
Quasar, astronomical gas is attracted to the black hole at the center of the galaxy is rotating at a high speed, the friction is shining brightly. It is believed that blowing gas impact from it, such as delaying the formation of stars. However, because it is 10 billion light-years away, I did not know the three-dimensional structure, such as a gas.
Space is distorted by gravity, around the celestial body, such as a galaxy, there is a (gravitational lensing) also serve to bend the light passing through it. Misawa et al. Lecturer focused on the fact that the light from the quasar to be observed, has received the gravitational lensing of galaxy clusters is between the earth. Consider whether it is not have come to pass through the two parts of the light that reaches the earth from the quasar is different gases, was observed in (Hawaii, USA) Subaru Telescope of the National Astronomical Observatory of Japan.
I concluded that the results, and found that the two components of the light is different, "and was successfully observed from multiple directions." I have confirmed that there is a difference in density of the gas along with it. Is not it amazing celestial gas flow can be observed because I was away 10 billion years later.


信大全学教育機構の三沢講師＝観測天文学＝らの研究グループは１９日、１００億光年離れた天体「クエーサー（銀河中心核）」から吹き出しているガス流を、「重力レンズ効果」という現象を利用し、２方向から立体的に観測することに世界で初めて成功したと発表した。ガスは星の形成などに影響を与えると考えられている。都内で開いた会見で三沢講師は「ガス内部は複雑な構造で、うろこ雲のような濃淡があるのではないか」とした。
　クエーサーは、銀河の中心にあるブラックホールに引き寄せられたガスが高速で回転し、摩擦によって明るく輝いている天体。そこから吹き出すガスは星の形成を遅らせるなどの影響があると考えられている。ただ、１００億光年も離れているため、ガスの立体的構造などが分からなかった。
　銀河などの天体の周りでは、重力で空間がゆがめられ、そこを通過する光も曲げる働き（重力レンズ効果）がある。三沢講師らは観測対象のクエーサーの光が、地球との間にある銀河団の重力レンズ効果を受けていることに着目。クエーサーから地球に届いている二つの光がガスの違う部分を通過して来たのではないかと考え、国立天文台のすばる望遠鏡（米ハワイ島）で観測した。
　その結果、二つの光の成分が違うことなどが分かり、「複数方向からの観測に成功した」と結論づけた。それに伴いガスの濃さに違いがあることを確認した。１００億後年離れたが天体のガス流が観測できるんですから凄いですよね。