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Compact Binaries and the Origin of Millisecond Pulsars

致密双星和毫秒脉冲星的起源

基本信息

批准号：
1714825
负责人：
Jay Strader
金额：
$ 33.8万
依托单位：
Michigan State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-15 至 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1714825&HistoricalAwards=false
关键词：
Compact Binaries Origin Millisecond Pulsars

项目摘要

The fastest-spinning neutron stars observable by astronomers have rotation periods of milliseconds and are known as millisecond pulsars. These stars, of which about 250 are known in the Milky Way Galaxy, are important laboratories for modern astrophysics in fields ranging from general relativity to the study of supernovae. Most have acquired their brisk spins by accretion of matter from a binary companion, a process known as "pulsar recycling." However, most of these systems have permanently stopped accreting and have low-mass white dwarf stellar companions, making it impossible to study the pulsar recycling process. A research team at Michigan State University has developed a method to use the NSF-supported SOAR telescope to discover new pulsars that are still actively accreting, which will allow them to uncover how millisecond pulsars are formed and find new insights into the nature of neutron stars. The team will do this by observing variable stars near gamma-ray sources newly discovered by NASA's Fermi Gamma-Ray Space Telescope, and measuring their detailed physical properties. The team will mentor undergraduate students in astronomy research, with an emphasis on recruiting members of groups underrepresented in science, and also link public observing at the campus observatory to university football games.When spun up as millisecond pulsars in binary systems, neutron stars offer stringent tests of general relativity, and the most massive neutron stars can give clues to the details of supernovae explosions and constrain the equation of state of cold nuclear matter at densities exceeding those of atomic nuclei. The planned work will lead to the discovery of unique neutron star binaries, clarify the existence of new classes of neutron star binaries, inform models for millisecond pulsar evolution, and trace the mass distribution of neutron stars. These binaries will be further characterized with multi-wavelength radio, X-ray, and gamma-ray data.

天文学家可观测到的自转最快的中子星的自转周期为毫秒，被称为毫秒中子星。这些恒星在银河系中大约有250颗，是现代天体物理学的重要实验室，从广义相对论到超新星研究。大多数中子星都是通过吸积来自双星伴星的物质而获得快速自转的，这一过程被称为“脉冲星再循环”。“然而，这些系统中的大多数已经永久停止吸积，并有低质量的白色矮恒星同伴，使其无法研究脉冲星回收过程。密歇根州立大学的一个研究小组已经开发出一种方法，利用NSF支持的SOAR望远镜发现仍在积极吸积的新恒星，这将使他们能够揭开毫秒恒星是如何形成的，并找到对中子星性质的新见解。该团队将通过观察美国宇航局费米伽马射线太空望远镜新发现的伽马射线源附近的变星，并测量它们的详细物理特性来实现这一目标。该团队将指导本科生进行天文学研究，重点是招募科学界代表性不足的团体的成员，同时也将校园天文台的公众观测与大学橄榄球赛联系起来。当中子星在双星系统中以毫秒级恒星的形式旋转时，它为广义相对论提供了严格的检验，而质量最大的中子星可以提供超新星爆炸细节的线索，并将冷核物质的状态方程限制在超过原子核的密度。计划中的工作将导致发现独特的中子星星双星，澄清新类别中子星星双星的存在，为毫秒脉冲星演化模型提供信息，并追踪中子星的质量分布。这些二进制将进一步与多波长无线电，X射线和伽马射线数据的特点。

项目成果

期刊论文数量（11）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Discovery of the Galactic High-mass Gamma-Ray Binary 4FGL J1405.1−6119

DOI：
10.3847/1538-4357/ab3e32
发表时间：
2019-08
期刊：
The Astrophysical Journal
影响因子：
0
作者：
R. Corbet;R. Corbet;L. Chomiuk;M. Coe;J. Coley;J. Coley;G. Dubus;P. G. Edwards;P. Martin
通讯作者：
R. Corbet;R. Corbet;L. Chomiuk;M. Coe;J. Coley;J. Coley;G. Dubus;P. G. Edwards;P. Martin

The Flare-dominated Accretion Mode of a Radio-bright Candidate Transitional Millisecond Pulsar

DOI：
10.3847/1538-4357/ab8f28
发表时间：
2020-04
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Kwan-Lok Li;J. Strader;J. Miller-Jones;C. Heinke;L. Chomiuk
通讯作者：
Kwan-Lok Li;J. Strader;J. Miller-Jones;C. Heinke;L. Chomiuk

Optical Spectroscopy and Demographics of Redback Millisecond Pulsar Binaries

DOI：
10.3847/1538-4357/aafbaa
发表时间：
2018-12
期刊：
The Astrophysical Journal
影响因子：
0
作者：
J. Strader;S. Swihart;L. Chomiuk;A. Bahramian;Christopher T. Britt;C. C. Cheung-C.;K. Dage;J. Halpern-J.-H
通讯作者：
J. Strader;S. Swihart;L. Chomiuk;A. Bahramian;Christopher T. Britt;C. C. Cheung-C.;K. Dage;J. Halpern-J.-H

A Multiwavelength View of the Neutron Star Binary 1FGL J1417.7–4402: A Progenitor to Canonical Millisecond Pulsars

DOI：
10.3847/1538-4357/aadcab
发表时间：
2018-08
期刊：
The Astrophysical Journal
影响因子：
0
作者：
S. Swihart;J. Strader;L. Shishkovsky;L. Chomiuk;A. Bahramian;C. Heinke;J. Miller-Jones;P. Edwards-P.-Edwa
通讯作者：
S. Swihart;J. Strader;L. Shishkovsky;L. Chomiuk;A. Bahramian;C. Heinke;J. Miller-Jones;P. Edwards-P.-Edwa

Discovery of a New Redback Millisecond Pulsar Candidate: 4FGL J0940.3–7610