Gamma-ray evidence for dark matter clumps

被引：24

作者：

Belotsky, K. ^{[1
,2
]}

Kirillov, A. ^{[1
,2
]}

Khlopov, M. ^{[1
,2
,3
]}

机构：

[1] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[2] Ctr Cosmoparticle Phys Cosm, Moscow 115409, Russia

[3] APC Lab, F-75205 Paris 13, France

来源：

GRAVITATION & COSMOLOGY | 2014年 / 20卷 / 01期

关键词：

LARGE-AREA TELESCOPE; GALACTIC HALO; STABLE NEUTRINOS; GALAXY FORMATION; PARTICLES; MASS; ANNIHILATION; ANTIPROTONS; CONSTRAINTS; EARTH;

D O I：

10.1134/S0202289314010022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the possibility of identification of point-like gamma-ray sources (PGS) with small-scale dark matter (DM) clumps in our Galaxy. Gamma rays are supposed to originate from annihilation of DM particles in the clumps, where the annihilation rate is supposed to be enhanced, besides higher density, due to smaller relative velocities v of DM particles. We parametrized the annihilation cross section sigma (ann)(v) in the form of an arbitrary power-law dependence on the relative velocity v with/without the Sommerfeld-Gamow-Sakharov factor, implying the existence of a new Coulomb-like interaction. Adopting different parameters of the cross-section and the clump, satisfying the condition Omega a parts per thousand(2) 0.2 on the density of DM particles, they are constrained by comparison with the Fermi/LAT data on unidentified PGS as well as on diffuse gamma radiation; the results are applied to concrete DM candidates. This analysis is found to be sensitive enough to the existing uncertainty in the DM density profiles in the clump, which can provide a tool for their test. We also discuss the possibilities where a gamma-radiating clump changes visibly its position on the celestial sphere and it is seen as a spatially extended gamma source (EGS), which can be probed in future experiments like Gamma-400.

引用

页码：47 / 54

页数：8

共 66 条

[1] Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes [J].

Abdo, A. A. ;

Ackermann, M. ;

Ajello, M. ;

Anderson, B. ;

Atwood, W. B. ;

Axelsson, M. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Baughman, B. M. ;

Bechtol, K. ;

Bellazzini, R. ;

Berenji, B. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bregeon, J. ;

Brez, A. ;

Brigida, M. ;

Bruel, P. ;

Burnett, T. H. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cecchi, C. ;

Charles, E. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

Dereli, H. ;

Dermer, C. D. ;

de Angelis, A. ;

de Palma, F. ;

Digel, S. W. ;

Di Bernardo, G. ;

Dormody, M. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Dubois, R. ;

Dumora, D. ;

Edmonds, Y. ;

Farnier, C. ;

Favuzzi, C. .

PHYSICAL REVIEW LETTERS, 2009, 103 (25)

[2] SEARCH FOR DARK MATTER SATELLITES USING FERMI-LAT [J].

Ackermann, M. ;

Albert, A. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bonamente, E. ;

Borgland, A. W. ;

Bottacini, E. ;

Brandt, T. J. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Burnett, T. H. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Casandjian, J. M. ;

Cecchi, C. ;

Charles, E. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

Cutini, S. ;

de Palma, F. ;

Dermer, C. D. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Drlica-Wagner, A. ;

Essig, R. ;

Falletti, L. ;

Favuzzi, C. ;

Fegan, S. J. ;

Focke, W. B. ;

Fukazawa, Y. ;

Funk, S. ;

Fusco, P. ;

Gargano, F. ;

Germani, S. ;

Giglietto, N. ;

Giordano, F. ;

Giroletti, M. .

ASTROPHYSICAL JOURNAL, 2012, 747 (02)

[3] Search for Weakly Interacting Massive Particles with the First Five-Tower Data from the Cryogenic Dark Matter Search at the Soudan Underground Laboratory [J].

Ahmed, Z. ;

Akerib, D. S. ;

Arrenberg, S. ;

Attisha, M. J. ;

Bailey, C. N. ;

Baudis, L. ;

Bauer, D. A. ;

Beaty, J. ;

Brink, P. L. ;

Bruch, T. ;

Bunker, R. ;

Burke, S. ;

Cabrera, B. ;

Caldwell, D. O. ;

Cooley, J. ;

Cushman, P. ;

DeJongh, F. ;

Dragowsky, M. R. ;

Duong, L. ;

Emes, J. ;

Figueroa-Feliciano, E. ;

Filippini, J. ;

Fritts, M. ;

Gaitskell, R. J. ;

Golwala, S. R. ;

Grant, D. R. ;

Hall, J. ;

Hennings-Yeomans, R. ;

Hertel, S. ;

Holmgren, D. ;

Huber, M. E. ;

Mahapatra, R. ;

Mandic, V. ;

McCarthy, K. A. ;

Mirabolfathi, N. ;

Nelson, H. ;

Novak, L. ;

Ogburn, R. W. ;

Pyle, M. ;

Qiu, X. ;

Ramberg, E. ;

Rau, W. ;

Reisetter, A. ;

Saab, T. ;

Sadoulet, B. ;

Sander, J. ;

Schmitt, R. ;

Schnee, R. W. ;

Seitz, D. N. ;

Serfass, B. .

PHYSICAL REVIEW LETTERS, 2009, 102 (01)

[4] Gamma-ray constraints on neutralino dark matter clumps in the galactic halo [J].

Aloisio, R ;

Blasi, P ;

Olinto, AV .

ASTROPHYSICAL JOURNAL, 2004, 601 (01) :47-53

[5] Can proper motions of dark-matter subhalos be detected? [J].

Ando, Shin'ichiro ;

Kamionkowski, Marc ;

Lee, Samuel K. ;

Koushiappas, Savvas M. .

PHYSICAL REVIEW D, 2008, 78 (10)

[6]

[Anonymous], ANAL THEORY SOV PHYS

[7] THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION [J].

Atwood, W. B. ;

Abdo, A. A. ;

Ackermann, M. ;

Althouse, W. ;

Anderson, B. ;

Axelsson, M. ;

Baldini, L. ;

Ballet, J. ;

Band, D. L. ;

Barbiellini, G. ;

Bartelt, J. ;

Bastieri, D. ;

Baughman, B. M. ;

Bechtol, K. ;

Bederede, D. ;

Bellardi, F. ;

Bellazzini, R. ;

Berenji, B. ;

Bignami, G. F. ;

Bisello, D. ;

Bissaldi, E. ;

Blandford, R. D. ;

Bloom, E. D. ;

Bogart, J. R. ;

Bonamente, E. ;

Bonnell, J. ;

Borgland, A. W. ;

Bouvier, A. ;

Bregeon, J. ;

Brez, A. ;

Brigida, M. ;

Bruel, P. ;

Burnett, T. H. ;

Busetto, G. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caraveo, P. A. ;

Carius, S. ;

Carlson, P. ;

Casandjian, J. M. ;

Cavazzuti, E. ;

Ceccanti, M. ;

Cecchi, C. ;

Charles, E. ;

Chekhtman, A. ;

Cheung, C. C. ;

Chiang, J. ;

Chipaux, R. ;

Cillis, A. N. ;

Ciprini, S. .

ASTROPHYSICAL JOURNAL, 2009, 697 (02) :1071-1102

[8] EXTENDED ROTATION CURVES OF SPIRAL GALAXIES - DARK HALOES AND MODIFIED DYNAMICS [J].

BEGEMAN, KG ;

BROEILS, AH ;

SANDERS, RH .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 249 (03) :523-537

[9]

Belotsky K. M., 2005, Gravitation & Cosmology, V11, P27

[10] May heavy neutrinos solve underground and cosmic-ray puzzles? [J].

Belotsky, K. M. ;

Fargion, D. ;

Khlopov, M. Yu. ;

Konoplich, R. V. .

PHYSICS OF ATOMIC NUCLEI, 2008, 71 (01) :147-161

← 1 2 3 4 5 6 7 →