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宽吸收线类星体物理研究
  • ISSN号：0379-4148
  • 期刊名称：《物理》
  • 时间：0
  • 分类：P158[天文地球—天文学]
  • 作者机构：[1]中国科学技术大学天体物理中心,合肥230026
  • 相关基金：国家自然科学基金（批准号：10533050）资助项目
作者： 王挺贵[1]
关键词： 类星体, 吸收线, 物理研究, 天体物理, quasars, absorption lines
中文摘要：

现在普遍相信类星体的反馈会调节寄主星系形成的进程，但其中具体的物理过程依然是个谜．类星体的外流是一个重要的候选者．为了确定外流的重要性，中国科学技术大学天体物理中心开展了宽吸收线类星体的一系列研究，取得了一些进展：（1）宽吸收线区的紫外吸收物质的柱密度比原来预计高出2个量级，低电离吸收线形成于饱和的高电离吸收线区；（2）射电宁静的宽吸收类星体吸收物质主要在赤道面，并且不同的源吸收物质分布情况很不相同，而在射电强的类星体中，赤道和极向外流都是可能的；（3）共振散射线偏振表明，外流物质携带角动量．

英文摘要：

Quasar feedback is considered a crucial process in galaxy formation and evolution; however, details of the physical process remain a mystery. Quasar outflow is one possible process. To assess the importance of qua- sar outflow we have performed a series of studies on broad absorption line （BAL） quasars, and have obtained the following results. （ 1 ） The UV absorption column density is an order of magnitude higher than previously believed, and low ionization BALs are formed in the high ionization zone. （2） In radio-quiet BAL quasars, the outflow is mainly confined to the equatorial directionwhile in radio-loud ones both equatorial and polar outflows are possible. （3） The polarization of resonantly scattered lines suggests that the outflow carries large Keywords quasars, absorption lines angular momentum.

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期刊信息
  • 《物理》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：朱星
  • 地址：北京603信箱
  • 邮编：100190
  • 邮箱：physics@aphy.iphy.ac.cn
  • 电话：010-82649470 82649266
  • 国际标准刊号：ISSN：0379-4148
  • 国内统一刊号：ISSN：11-1957/O4
  • 邮发代号:2-805
  • 获奖情况:
  • 2002年中国科协优秀期刊三等奖,2000年度中科院优秀期刊一等奖,2001年入选“中国期刊方阵”,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:8902