首页> 外文期刊>Nature >A WATER-VAPOUR GIGA-MASER IN THE ACTIVE GALAXY TXFS2226-184
【24h】

A WATER-VAPOUR GIGA-MASER IN THE ACTIVE GALAXY TXFS2226-184

机译:有源GALAXY TXFS2226-184中的水蒸气巨型喷泉

获取原文
获取原文并翻译 | 示例
           

摘要

ACTIVE galactic nuclei are thought to be powered by gas falling into a massive black hole; the different types of active galaxy mag arise because we view them through a thick torus of molecular gas at varying angles of inclination(1). One way to determine whether the black hole is surrounded by a torus, which would obscure the accretion disk around the black hole along certain lines of sight, is to search for water masers, as these exist only in regions with plentiful molecular gas. Since the first detection(2) of an extragalactic water maser in 1979, they have come to be associated primarily with active galaxies, and have even been used to probe the mass of the central engine(3). Here we report the detection of a water giga-maser in the radio galaxy TXFS2226-184. The strength of the emission supports a recently proposed theory of maser pumping(4) that allows for even more powerful masers, which might be detectable at cosmological distances. Water masers may accordingly provide a may to determine distances to galaxies outside the usual distance ladder, providing an independent calibration of the Hubble constant(3,5).
机译:人们认为活跃的银河核是由落入巨大黑洞的气体提供动力的。之所以出现不同类型的活跃星系mag,是因为我们通过分子气体的厚圆环以不同的倾斜角度观察​​它们(1)。一种确定黑洞是否被圆环包围的方法,这会沿着一定的视线遮盖黑洞周围的吸积盘,这是寻找水激流层,因为它们仅存在于分子气体丰富的区域。自1979年首次检测到银河外水激射(2)以来,它们主要与活动星系相关联,甚至被用来探测中央引擎的质量(3)。在这里,我们报告在星系TXFS2226-184中检测到水兆兆激增子。发射的强度支持了最近提出的maser抽运理论(4),该理论允许更大功率的masers,在宇宙学距离上可能可以检测到。因此,水激射器可能会提供一个确定距通常距离阶梯以外的星系的距离的方法,从而对哈勃常数(3,5)进行独立校准。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号