Toward the event horizon with Astro-H

与 Astro-H 一起走向事件视界

• 批准号: RGPIN-2015-03639
• 负责人: Gallo, Luigi
• 金额: $ 3.86万
• 依托单位: Saint Mary's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=589282
• 关键词: Toward; event; horizon; Astro

A supermassive black hole that is millions or even billions of times more massive than the Sun resides at the centres of most galaxies. Some of these monsters are so active that they can make the surrounding material shine brighter than all the stars in its host galaxy. The material closest to the black hole, just as it is about to plunge beyond the event horizon, is subjected to the most violent conditions in the Universe. The extreme gravity of the black hole can tear stars apart and fling matter around at velocities close to the speed of light before it is finally ingested. Sometimes this material can be thrown out so violently that it is completely ejected from the black hole region and hurled back into the galactic neighbourhood where it may have a resounding effect on the conditions in the host galaxy. The matter closest to the black hole is heated to millions of degrees or even hotter, and it radiates at X-ray energies.

大多数星系的中心都有一个比太阳大数百万甚至数十亿倍的超大质量黑洞。 其中一些怪物非常活跃，以至于它们可以使周围的物质比其所在星系中的所有恒星都更加明亮。 最接近黑洞的物质，就在它即将冲出事件视界时，正经受着宇宙中最剧烈的条件。 黑洞的极端引力可以将恒星撕裂，并以接近光速的速度将物质抛向周围，然后最终被吞噬。 有时，这种物质可能会被猛烈地抛出，以至于它被完全从黑洞区域喷射出来，并被扔回银河系附近，在那里它可能会对宿主星系的条件产生巨大的影响。 最靠近黑洞的物质被加热到数百万度甚至更高，并以 X 射线能量辐射。