The nongravitational interactions of dark matter in colliding galaxy clusters

被引：361

作者：

Harvey, David ^{[1
,2
]}

Massey, Richard ^{[3
]}

Kitching, Thomas ^{[4
]}

Taylor, Andy ^{[2
]}

Tittley, Eric ^{[2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Astrophys Lab, Observ Sauverny, CH-1290 Versoix, Switzerland

[2] Univ Edinburgh, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland

[3] Univ Durham, Inst Computat Cosmol, Durham DH1 3LE, England

[4] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

来源：

SCIENCE | 2015年 / 347卷 / 6229期

基金：

英国科学技术设施理事会; 瑞士国家科学基金会;

关键词：

INTERACTION CROSS-SECTION; SUBSTRUCTURE; SIMULATIONS; CONSTRAINTS; EXISTENCE; SCALE; MILKY;

D O I：

10.1126/science.1261381

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Collisions between galaxy clusters provide a test of the nongravitational forces acting on dark matter. Dark matter's lack of deceleration in the "bullet cluster" collision constrained its self-interaction cross section sigma(DM)/m <1.25 square centimeters per gram (cm(2)/g) [68% confidence limit (CL)] (sigma(DM), self-interaction cross section; m, unit mass of dark matter) for long-ranged forces. Using the Chandra and Hubble Space Telescopes, we have now observed 72 collisions, including both major and minor mergers. Combining these measurements statistically, we detect the existence of dark mass at 7.6 sigma significance. The position of the dark mass has remained closely aligned within 5.8 +/- 8.2 kiloparsecs of associated stars, implying a self-interaction cross section sigma(DM)/m < 0.47 cm(2)/g (95% CL) and disfavoring some proposed extensions to the standard model.

引用

页码：1462 / 1465

页数：4

共 31 条

[1] Planck 2013 results. XVI. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cappellini, B. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chen, X. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[2] First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility [J].

Akerib, D. S. ;

Araujo, H. M. ;

Bai, X. ;

Bailey, A. J. ;

Balajthy, J. ;

Bedikian, S. ;

Bernard, E. ;

Bernstein, A. ;

Bolozdynya, A. ;

Bradley, A. ;

Byram, D. ;

Cahn, S. B. ;

Carmona-Benitez, M. C. ;

Chan, C. ;

Chapman, J. J. ;

Chiller, A. A. ;

Chiller, C. ;

Clark, K. ;

Coffey, T. ;

Currie, A. ;

Curioni, A. ;

Dazeley, S. ;

de Viveiros, L. ;

Dobi, A. ;

Dobson, J. ;

Dragowsky, E. M. ;

Druszkiewicz, E. ;

Edwards, B. ;

Faham, C. H. ;

Fiorucci, S. ;

Flores, C. ;

Gaitskell, R. J. ;

Gehman, V. M. ;

Ghag, C. ;

Gibson, K. R. ;

Gilchriese, M. G. D. ;

Hall, C. ;

Hanhardt, M. ;

Hertel, S. A. ;

Horn, M. ;

Huang, D. Q. ;

Ihm, M. ;

Jacobsen, R. G. ;

Kastens, L. ;

Kazkaz, K. ;

Knoche, R. ;

Kyre, S. ;

Lander, R. ;

Larsen, N. A. ;

Lee, C. .

PHYSICAL REVIEW LETTERS, 2014, 112 (09)

[3] THE STATISTICS OF PEAKS OF GAUSSIAN RANDOM-FIELDS [J].

BARDEEN, JM ;

BOND, JR ;

KAISER, N ;

SZALAY, AS .

ASTROPHYSICAL JOURNAL, 1986, 304 (01) :15-61

[4] Weak gravitational lensing [J].

Bartelmann, M ;

Schneider, P .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 340 (4-5) :291-472

[5] Self-interacting dark matter from a non-Abelian hidden sector [J].

Boddy, Kimberly K. ;

Feng, Jonathan L. ;

Kaplinghat, Manoj ;

Tait, Tim M. P. .

PHYSICAL REVIEW D, 2014, 89 (11)

[6] Too big to fail? The puzzling darkness of massive Milky Way subhaloes [J].

Boylan-Kolchin, Michael ;

Bullock, James S. ;

Kaplinghat, Manoj .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 415 (01) :L40-L44

[7] Composite strongly interacting dark matter [J].

Cline, James M. ;

Liu, Zuowei ;

Moore, Guy D. ;

Xue, Wei .

PHYSICAL REVIEW D, 2014, 90 (01)

[8] Weak-lensing mass reconstruction of the interacting cluster 1E 0657-558: Direct evidence for the existence of dark matter [J].

Clowe, D ;

Gonzalez, A ;

Markevitch, M .

ASTROPHYSICAL JOURNAL, 2004, 604 (02) :596-603

[9] A direct empirical proof of the existence of dark matter [J].

Clowe, Douglas ;

Bradac, Marusa ;

Gonzalez, Anthony H. ;

Markevitch, Maxim ;

Randall, Scott W. ;

Jones, Christine ;

Zaritsky, Dennis .

ASTROPHYSICAL JOURNAL, 2006, 648 (02) :L109-L113

[10] THE EVOLUTION OF LARGE-SCALE STRUCTURE IN A UNIVERSE DOMINATED BY COLD DARK MATTER [J].

DAVIS, M ;

EFSTATHIOU, G ;

FRENK, CS ;

WHITE, SDM .

ASTROPHYSICAL JOURNAL, 1985, 292 (02) :371-394

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