Can astrophysical gamma-ray sources mimic dark matter annihilation in galactic satellites?

被引：45

作者：

Baltz, Edward A. ^{[1
]}

Taylor, James E.

Wai, Lawrence L.

机构：

[1] Stanford Linear Accelerator Ctr, KIPAC, Menlo Pk, CA 94025 USA

[2] Univ Waterloo, Dept Phys & Astron, Waterloo, ON NL2 3G1, Canada

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 659卷 / 02期

关键词：

dark matter; elementary particles; Galaxy : halo; gamma rays : theory;

D O I：

10.1086/517882

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The nature of the cosmic dark matter is unknown. The most compelling hypothesis is that dark matter consists of weakly interacting massive particles (WIMPs) in the 100 GeV mass range. Such particles would annihilate in the Galactic halo, producing high-energy gamma rays that might be detectable in gamma-ray telescopes such as the Gamma-Ray Large Area Space Telescope (GLAST). We investigate the ability of GLAST to distinguish between WIMP annihilation sources and astrophysical sources. Focusing on the Galactic satellite halos predicted by the cold dark matter model, we find that the WIMP gamma-ray spectrum is nearly unique; separation of the brightest WIMP sources from known source classes can be done in a convincing way by including spectral and spatial information. Candidate WIMP sources can be further studied with imaging atmospheric Cerenkov telescopes. Finally, Large Hadron Collider data might have a crucial impact on the study of Galactic dark matter.

引用

页码：L125 / L128

页数：4

共 44 条

[1] HESS observations of the Galactic Center region and their possible dark matter interpretation [J].

Aharonian, F. ;

Akhperjanian, A. G. ;

Bazer-Bachi, A. R. ;

Beilicke, M. ;

Benbow, W. ;

Berge, D. ;

Bernloehr, K. ;

Boisson, C. ;

Bolz, O. ;

Borrel, V. ;

Braun, I. ;

Breitling, F. ;

Brown, A. M. ;

Buehler, R. ;

Busching, I. ;

Carrigan, S. ;

Chadwick, P. M. ;

Chounet, L. -M. ;

Cornils, R. ;

Costamante, L. ;

Degrange, B. ;

Dickinson, H. J. ;

Djannati-Atai, A. ;

Drury, L. O'C. ;

Dubus, G. ;

Egberts, K. ;

Emmanoulopoulos, D. ;

Espigat, P. ;

Feinstein, F. ;

Ferrero, E. ;

Fiasson, A. ;

Fontaine, G. ;

Funk, Seb. ;

Funk, S. ;

Gallant, Y. A. ;

Giebels, B. ;

Glicenstein, J. F. ;

Goret, P. ;

Hadjichristidis, C. ;

Hauser, D. ;

Hauser, M. ;

Heinzelmann, G. ;

Henri, G. ;

Hermann, G. ;

Hinton, J. A. ;

Hofmann, W. ;

Holleran, M. ;

Horns, D. ;

Jacholkowska, A. ;

de Jager, O. C. .

PHYSICAL REVIEW LETTERS, 2006, 97 (22)

[2] Observation of gamma rays from the Galactic center with the magic telescope [J].

Albert, J ;

Aliu, E ;

Anderhub, H ;

Antoranz, P ;

Armada, A ;

Asensio, M ;

Baixeras, C ;

Barrio, JA ;

Bartelt, M ;

Bartko, H ;

Bastieri, D ;

Bavikadi, R ;

Bednarek, W ;

Berger, K ;

Bigongiari, C ;

Biland, A ;

Bisesi, E ;

Bock, RK ;

Bretz, T ;

Britvitch, I ;

Camara, M ;

Chilingarian, A ;

Ciprini, S ;

Coarasa, JA ;

Commichau, S ;

Contreras, JL ;

Cortina, J ;

Curtef, V ;

Danielyan, V ;

Dazzi, F ;

De Angelis, A ;

De los Reyes, R ;

De Lotto, B ;

Domingo-Santamaría, E ;

Dorner, D ;

Doro, M ;

Errando, M ;

Fagiolini, M ;

Ferenc, D ;

Fernández, E ;

Firpo, R ;

Flix, J ;

Fonseca, MV ;

Font, L ;

Galante, N ;

Garczarczyk, M ;

Gaug, M ;

Giller, M ;

Goebel, F ;

Hakobyan, D .

ASTROPHYSICAL JOURNAL, 2006, 638 (02) :L101-L104

[3] 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

[4] GAMMA-LARGE AREA SILICON TELESCOPE (GLAST) APPLYING SILICON STRIP DETECTOR TECHNOLOGY TO THE DETECTION OF GAMMA-RAYS IN-SPACE [J].

ATWOOD, WB .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 342 (01) :302-307

[5] Diffuse inverse Compton and synchrotron emission from dark matter annihilations in galactic satellites [J].

Baltz, EA ;

Wai, L .

PHYSICAL REVIEW D, 2004, 70 (02) :023512-1

[6] Detection of neutralino annihilation photons from external galaxies [J].

Baltz, EA ;

Briot, C ;

Salati, P ;

Taillet, R ;

Silk, J .

PHYSICAL REVIEW D, 2000, 61 (02)

[7] Determination of dark matter properties at high-energy colliders [J].

Baltz, Edward A. ;

Battaglia, Marco ;

Peskin, Michael E. ;

Wizansky, Tommer .

PHYSICAL REVIEW D, 2006, 74 (10)

[8] Clumpy neutralino dark matter -: art. no. 043506. [J].

Bergström, L ;

Edsjö, J ;

Gondolo, P ;

Ullio, P .

PHYSICAL REVIEW D, 1999, 59 (04)

[9] Observability of γ rays from dark matter neutralino annihilations in the Milky Way halo [J].

Bergstrom, L ;

Ullio, P ;

Buckley, JH .

ASTROPARTICLE PHYSICS, 1998, 9 (02) :137-162

[10] Gamma rays from the neutralino dark matter annihilations in the Milky Way substructures [J].

Bi, XJ .

NUCLEAR PHYSICS B, 2006, 741 (1-2) :83-107

← 1 2 3 4 5 →