The quiescent intracluster medium in the core of the Perseus cluster

http://www.nature.com/nature/journal/v535/n7610/full/nature18627.html
http://adsabs.harvard.edu/abs/2016Natur.535..117H

In news articles:

https://www.nasa.gov/feature/goddard/2016/hitomi-mission-charts-hot-winds-of-a-galaxy-cluster-for-the-first-time

http://sci.esa.int/hitomi/58045-galaxy-cluster-keeps-calm-and-carries-on-radiating-x-rays/

http://www.cam.ac.uk/research/news/dead-satellite-finds-a-calm-centre-at-the-heart-of-brightest-galaxy-cluster-in-the-sky



http://news.biglobe.ne.jp/domestic/0707/jj_160707_8428081918.html
銀河団ガスの動き検出＝「ひとみ」試験観測中の成果―ＪＡＸＡ

http://news.tv-asahi.co.jp/news_society/articles/000078598.html

http://www.isas.jaxa.jp/topics/000282.html