http://harvardscience.harvard.edu/stories/person/1457 Stories and external links referencing a person (RSS) en http://harvardscience.harvard.edu/environments/articles/x-ray-arcs-tell-tale-giant-eruption <!--paging_filter--><p>Scientists from the Harvard-Smithsonian Center for Astrophysics (CfA) report that two arc-like structures of multimillion-degree gas in the galaxy Centaurus A appear to be part of a ring 25,000 light years in diameter. The size and location of the ring suggest that it could have been produced in a titanic explosion that occurred about 10 million years ago. A composite image of the galaxy made with radio (red and green), optical (yellow-orange), and X-ray data (blue) presents a stunning tableau of a tumultuous galaxy. A broad band of dust and cold gas is bisected at an angle by opposing jets of high-energy particles blasting away from the supermassive black hole in the nucleus. Lying in a plane perpendicular to the jets are the two large arcs of X-ray emitting hot gas.</p> <p><a href="http://harvardscience.harvard.edu/environments/articles/x-ray-arcs-tell-tale-giant-eruption">read more</a></p> Mon, 26 Mar 2007 05:25:27 -0400 70652986 3269 at http://harvardscience.harvard.edu