有色金属加工行业分析:什么是射电双源?

来源:百度文库 编辑:查人人中国名人网 时间:2024/04/29 04:19:30
These double radio sources present astronomers with a puzzle. Their radio emission arises from the synchrotron process, in which electrons accelerated to nearly the speed of light move through magnetic fields. However, in view of the rate at which the radio souces emit enery, they should disppear in a few million years as their electrons slow down and case producing radiation. Somehow new electrons must be continually accelerated to nearly the speed of light.Otherwise, by now almost none of he double radio sources would be observed.

宇宙空间辐射无线电波的分立天体。大多数天体都可能是射电源,已发现的射电源有3万多个。射电源类型很多,按视角径大小可分为致密源和展源两类。致密源角径小于1〃,大小仅为1~100光年,最小总能量在1045~1051焦耳间,常在类星体、特殊星系核内发现。展源角径大于1〃,大小为3~200万光年,最小总能量在1051~1054焦耳间,常与亮椭圆星系相证认,40%的展源是双射电源,也就是一种光学外貌似恒星,光谱线有很大红移的强射电源。

宇宙空间辐射无线电波的分立天体。大多数天体都可能是射电源,已发现的射电源有3万多个。射电源类型很多,按视角径大小可分为致密源和展源两类。致密源角径小于1〃,大小仅为1~100光年,最小总能量在1045~1051焦耳间,常在类星体、特殊星系核内发现。展源角径大于1〃,大小为3~200万光年,最小总能量在1051~1054焦耳间,常与亮椭圆星系相证认,40%的展源是双射电源,也就是一种光学外貌似恒星,光谱线有很大红移的强射电源。