首页> 外文OA文献 >Testing the MOND Paradigm of Modified Dynamics with Galaxy-Galaxy Gravitational Lensing
【2h】

Testing the MOND Paradigm of Modified Dynamics with Galaxy-Galaxy Gravitational Lensing

机译:用Galaxy-Galaxy测试改进动力学的mOND范式   引力传感

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

MOND predicts that the asymptotic gravitational potential of an isolated,bounded (baryonic) mass, M, is phi(r)=(MGa0)^{1/2}ln(r); a0 is the MONDconstant. Relativistic MOND theories predict that the lensing effects of M aredictated by phi(r) as general-relativity lensing is dictated by the Newtonianpotential. Thus, MOND predicts that the asymptotic Newtonian potential deducedfrom galaxy-galaxy gravitational lensing will have: (1) a logarithmic rdependence, and (2) a normalization (parametrized standardly as 2s^2) thatdepends only on M: s=(MGa0/4)^{1/4}. I compare these predictions with recentresults of galaxy-galaxy lensing, and find agreement on all counts. For the"blue"-lenses subsample ("spiral" galaxies) MOND reproduces the observationswell with an r'-band M/L of 1-3 solar units, and for "red" lenses ("elliptical"galaxies) with M/L of 3-6 solar units, both consistent with baryons only. Incontradistinction, Newtonian analysis requires, typically, M/L values of about130 solar units, bespeaking a mass discrepancy of a factor of about 40.Compared with the staple, rotation-curve tests, MOND is here tested in a widerpopulation of galaxies, through a different phenomenon, using relativistic testobjects, and is probed to several-times-lower accelerations--as low as a fewpercent of a0.
机译:MOND预测孤立的有界(重音)质量M的渐近引力为phi(r)=(MGa0)^ {1/2} ln(r); a0是MOND常数。相对论的MOND理论预测M的透镜效应由phi(r)决定,而广义相对透镜透镜由牛顿电位决定。因此,MOND预测从星系-星系引力透镜推论得出的渐近牛顿势将具有:(1)对数相关性,和(2)仅依赖于M的归一化(标准参数化为2s ^ 2):s =(MGa0 / 4 )^ {1/4}。我将这些预测与最近的星系-星系镜头结果进行了比较,并在所有方面达成了共识。对于“蓝色”透镜子样本(“螺旋”星系),MOND使用1-3个太阳能单位的r'波段M / L再现观察结果,对于“红色”透镜(“椭圆”星系)具有M / L再现观察结果。 3-6个太阳能单位,均与重子一致。与之相反,牛顿分析通常需要约130个太阳单位的M / L值,这意味着质量差异约为40倍。与常规的旋转曲线测试相比,MOND在这里通过更广泛的星系测试不同的现象,使用相对论的测试对象,并被探查到低几倍的加速度-低至a0的百分之几。

著录项

  • 作者

    Milgrom, Mordehai;

  • 作者单位
  • 年度 2013
  • 总页数
  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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