Macho project limits on black hole dark matter in the 1-30 M⊙ range

被引：293

作者：

Alcock, C ^{[1
]}

Allsman, RA

Alves, DR

Axelrod, TS

Becker, AC

Bennett, DP

Cook, KH

Dalal, N

Drake, AJ

Freeman, KC

Geha, M

Griest, K

Lehner, MJ

Marshall, SL

Minniti, D

Nelson, CA

Peterson, BA

Popowski, P

Pratt, MR

Quinn, PJ

Stubbs, CW

Sutherland, W

Tomaney, AB

Vandehei, T

Welch, DL

机构：

[1] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Calif Berkeley, Ctr Particle Astrophys, Berkeley, CA 94720 USA

[3] Australian Natl Univ, Supercomp Facil, Canberra, ACT 0200, Australia

[4] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[5] Australian Natl Univ, Res Sch Astron & Astrophys, Weston Creek, ACT 2611, Australia

[6] Univ Washington, Dept Astron & Astrophys, Seattle, WA 98195 USA

[7] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[8] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[9] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[10] Pontificia Univ Catolica Chile, Dept Astron, Santiago 22, Chile

[11] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[12] European So Observ, D-85748 Garching, Germany

[13] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[14] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 550卷 / 02期

基金：

美国国家科学基金会;

关键词：

black hole physics; dark matter; Galaxy : halo; Galaxy : structure; gravitational lensing;

D O I：

10.1086/319636

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a search for long-duration microlensing events toward the Large Magellanic Cloud. We find none and therefore put limits on the contribution of high-mass objects to the Galactic dark matter. At a 95% confidence level, we exclude objects in the mass range of 0.3-30.0 M-circle dot from contributing more than 4 x 10(11) M-circle dot to the Galactic halo. Combined with earlier results, this means that objects with masses under 30 M-circle dot cannot make up the entire dark matter halo if the halo is of typical size. For a typical dark halo, objects with masses under 10 M-circle dot contribute less than 40% of the dark matter.

引用

页码：L169 / L172

页数：4

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