RUI: Pulsars, Relativistic Gravitation, and the Interstellar Medium

RUI：脉冲星、相对论引力和星际介质

基本信息

批准号：
0098540
负责人：
Joel Weisberg
金额：
$ 17万
依托单位：
Carleton College
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2001
资助国家：
美国
起止时间：
2001-07-01 至 2004-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098540&HistoricalAwards=false
关键词：
RUI Pulsars Relativistic Gravitation Interstellar

项目摘要

Weisberg, JoelRUI: Pulsars, Relativistic Gravitation, and the Interstellar MediumAST-0098540In astronomy, we commonly encounter physical conditions quite unfamiliar to us here on Earth. It gives us a chance to test physical theories that apply locally in order to see if they remain valid at extremes. As neutron stars, pulsars represent one such extreme. With their many unusual properties, pulsars can be studied in themselves but they can also be used to probe the interstellar medium and to investigate experimentally the effects of relativistic gravitation. Starting from the background and results of a current grant, the investigation outlined here moves on to new research in each of these three areas. Intrinsic studies of pulsars will include measurements of polarized pulse profiles, investigations of the emission beam geometry, and searches for free and radiative precession. The binary pulsar B1913+16 will be used as a relativistic gravitational laboratory. Gravitational radiation emission and relativistic spin precession will be measured and compared with theory. The interstellar medium investigations will involve Faraday rotation measurements of the galactic magnetic field and several pulsar pulse-phase-resolved spectrometry studies. The spectrometry experiments will include the determination of pulsar distances and interstellar electron densities through neutral hydrogen kinematic distance measurements.

Weisberg，Joelrui：Pulsars，相对论的引力和星际中的0098540在天文学中，我们通常会在地球上遇到我们非常熟悉的物理条件。它使我们有机会测试本地适用的物理理论，以查看它们是否在极端情况下保持有效。作为中子星，脉冲星是如此极端。凭借其许多不寻常的特性，可以自身研究脉冲星，但也可以用来探测星际培养基并实验研究相对论引力的影响。从当前赠款的背景和结果开始，此处概述的调查在这三个领域中的每个领域都进行了新的研究。脉冲星的内在研究将包括测量极化脉冲曲线的测量，对发射束几何形状的研究以及搜索自由和辐射进动。二元脉冲星B1913+16将用作相对论的引力实验室。将测量重力辐射发射和相对论自旋进动，并与理论进行比较。星际培养基的研究将涉及银河磁场的法拉第旋转测量和几个脉冲星脉冲分辨的光谱法研究。光谱实验将包括通过中性氢运动学距离测量测量脉冲星距离和星际电子密度。