Constraints on the Distribution of Dark Matter within the Milky Way
Constraints on the Distribution of Dark Matter within the Milky Way
批准号:
9215736
负责人:
Paul Schechter
金额:
$0.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1993
资助国家:
美国
项目状态:
已结题
起止时间:
1993-01-01 至 1998-06-30
中文摘要
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英文摘要
It is widely believed that most of the mass in our Galaxy lies in one or more unseen "dark" components. In the absence of direct detection, the distribution of dark matter can be mapped by observing its gravitational effects on suitably chosen tracers of the Milky Way's potential energy. Observations of two different tracers, Cepheid variable stars and K dwarfs, will be used to determine (a) the distance from the Sun to the center of the Galaxy, (b) the deviation from axisymmetry of the closed orbits passing near the Sun, and (c) the mass surface density of the disk of the Galaxy at the Sun's position. The deviation from axisymmetry will be obtained by way of a search for new Cepheids toward galactic longitude l = 60 degrees, complementing a recent successful search carried out toward l = 300 degrees. Followup photometry will be obtained in the near infrared at 1.2, 1.6, and 2.2 microns, where the effects of interstellar extinction are substantially reduced.
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Strongly gravitationally lensed quasars and the distribution of dark matter in galaxies
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批准号:0607601
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项目类别:Continuing Grant
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资助金额:$34.97万
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财政年份:2006
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负责人:Paul Schechter
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依托单位:
Collaborative Research: The Mathematics of Stochastic Gravitational
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批准号:0433809
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项目类别:Standard Grant
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资助金额:$20.0万
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财政年份:2004
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负责人:Paul Schechter
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依托单位:
New Gravitational Lenses, Time Delays, and Microlensing with the Magellan Telescopes
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批准号:0206010
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项目类别:Continuing Grant
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资助金额:$28.96万
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财政年份:2002
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负责人:Paul Schechter
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依托单位:
Precision Photometry of Quadruply-Imaged Gravitationally Lensed Quasars: Time Delays and Cosmological Parameters
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批准号:9616866
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1997
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负责人:Paul Schechter
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依托单位:
Milky Way Rotation: Deviations from Circular Motion and the
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批准号:9015920
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1991
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负责人:Paul Schechter
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依托单位:
Observations Constraining the Relative Masses of the Disk, Bulge and Halo of the Milky Way
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批准号:8996139
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1988
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负责人:Paul Schechter
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依托单位:
Observations Constraining the Relative Masses of the Disk, Bulge and Halo of the Milky Way
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批准号:8713888
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项目类别:Continuing Grant
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资助金额:$2.72万
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财政年份:1987
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负责人:Paul Schechter
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依托单位:
Gravitational Acceleration Perpendicular to the Galactic Plane
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批准号:8318504
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项目类别:Continuing Grant
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资助金额:$15.46万
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财政年份:1984
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负责人:Paul Schechter
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依托单位:
国内基金
海外基金
Shining light on the black hole mass distribution
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批准号:12073029
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项目类别:面上项目
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资助金额:61.0万元
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批准年份:2020
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负责人:Roberto Soria
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依托单位: