X-ray and 라디오 observation of 은하 system Abell 2384 reveals collision of two 은하 clusters that travelled through each other forming a binodal system with a bridge of superhot gas between two cluster lobes and a bend in the bridge due to powerful jet of hot gas shooting away from a super heavy 블랙 홀 in the centre of a 은하 클러스터에서.
To put the whole thing in a perspective, the earth along with other 행성 and their satellites are part of the ‘stellar system’ of a 별 called sun. Each 별 may have such a system comprising of bodies 궤도를 도는 them. Large number of 별 bound together by gravity form a celestial entity called 은하. For example, our solar system is part of a 은하 called ‘milky way’ which alone has about 100 thousand million 별, each with their own stellar system. Hundreds of galaxies bound together by gravitational field form what we call ‘은하 cluster’.
'은하 clusters’ are the largest objects in the 우주, each comprising of hundreds of galaxies together with vast amount of super-hot gas cloud and large amount of dark matter. The interspersed superhot (30 – 100 million degrees Celsius) gas cloud is invisible to optical telescope but emits x-rays observable by the x-ray telescope. The dark matter does not emit, absorb or reflect any electro-magnetic radiation hence is not observable by any kind of telescope, but only by their gravitational interaction with the ‘white’ matter.
Several hundred million years ago, at a distance of about 1.2 billion light years away from us, two 은하 clusters collided and travelled through each other forming a merger-like system called Abell 2384 or A2384. Located in the constellation capricornus (one of the constellations of Zodiac and is known as ‘goat horn’), Abell 2384 is about 17 million light years across in size with two unequal cluster lobes connected by a three million light-year long bridge of hot gas.
천문학 자 이것에 대한 상세한 합성 보기를 얻었다 은하 클러스터 시스템, 아벨 2384 아래에 언급된 세 가지 다른 유형의 소스에서 다중 파장 데이터 사용:
1. 파란색: Chandra X-Ray Observatory의 X-ray 데이터(X-ray 공간 telescope launched by NASA in 1999) and XMM-Newton (X-ray 공간 observatory launched by the European Space Agency in 1999).
2. 마젠타: 라디오 data from provided by Giant Metre-wave Radio Telescope (GMRT), India.
3. Yellow: Optical data from Digitized Sky Survey (DSS) by 스페이스 버튼 Telescope Science Institute.
The x-ray data obtained from the 공간 observatories revealed high-density region extended between the two cluster heads corresponding to the unique hot gas bridge. Radio observation indicated x-ray-radio interaction at the cluster outskirts indicative of a peculiar radio galaxy. The conclusion is that of a powerful jet shooting away from a supermassive 블랙홀 in the centre of a galaxy within the galaxy cluster leading to bend in the shape of the gas bridge.
이 연구는 성장과 과정에 대한 지식 기반을 개발하는 데 의의가 있습니다. 은하의 합병 clusters in the 우주. Simulation suggests that the north and south clusters in the system Abell 2384 will eventually merge together with each other.
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출처 :
1. 유럽 연합 우주(European Space Agency) 2020. 두 은하단 사이의 구부러진 다리. 11년 2020월 XNUMX일 게시. http://www.esa.int/Science_Exploration/Space_Science/A_bent_bridge_between_two_galaxy_clusters 13년 2020월 XNUMX일에 액세스함.
2. 찬드라 X선 천문대(NASA) 2020. Abell 2384: 두 은하단 사이의 다리 구부리기. 출시 날짜: 11년 2020월 XNUMX일. 온라인에서 사용 가능 https://chandra.si.edu/photo/2020/a2384/index.html 13년 2020월 XNUMX일에 액세스함.
3. Parekh V., Lagana TF, et al., 2020. A2384 은하단의 뜨거운 X선 다리와 FR I 상호작용의 드문 사례. MNRAS 491, 2605–2616. DOI: https://doi.org/10.1093/mnras/stz3067
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