content_image/394504.jpg
<img src='content_image/394504.jpg'>

exception of a couple of prominent structures. The sky map in the lower left panel is the ratio of the two maps; it clearly enhances the signal of nearby structures. Convincing supporting evidence for this enhancement comes from the nearest partial map at z = 0 for E$_{γ,}$$_{0}$ = 0 . 1 GeV shown in the lower right corner of Fig. 5. Most of the prominent dark matter structures that can be seen in this map are also clearly present in the map with the energy ratio. We conclude that the γ -ray sky maps that the FERMI satellite will obtain at different energies could be used to construct difference maps which may then show enhanced cor- relations with nearby cosmic large-scale structure. 

## References 

E. A. Baltz and J. Edsj¨ o, PRD 59 , 023511 (1999). 

V. Berezinsky et al., Astroparticle Physics 5 , 333 (1996). 

G. Bertone and D. Merritt, Modern Physics Letters A 20 , 1021 (2005). 

A. Jacholkowska et al., PRD 74 , 023518 (2006). 

M. Wood et al., ApJ 678 , 594 (2008). 

F. Stoehr et al., MNRAS 345 , 1313 (2003). 

V. Springel et al., Nature 456 , 73 (2008). 

A. W. Strong, I. V. Moskalenko, and O. Reimer, ApJ 613 , 956 (2004). 

W. B. Atwood et al., ApJ 697 , 1071 (2009). 

S. Ando et al., MNRAS 376 , 1635 (2007a). 

M. Jubelgas et al., A&A 481 , 33 (2008). 

S. Ando and E. Komatsu, PRD 73 , 023521 (2006). 

J. M. Siegal-Gaskins and V. Pavlidou, Physical Re- view Letters 102 , 241301 (2009). 

J. Zavala, V. Springel, and M. Boylan-Kolchin, ArXiv e-prints (2009), arXiv:0908.2428. 

M. Boylan-Kolchin et al., MNRAS 398 , 1150 (2009). 

J. L. Feng, Annals of Physics 315 , 2 (2005). 

M. Battaglia et al., European Physical Journal C 33 , 273 (2004). 

P. Gondolo et al., JCAP 7 , 8 (2004). 

P. Gondolo et al., New Astronomy Review 49 , 149 (2005). 

T. Bringmann, L. Bergstr¨ om, and J. Edsj¨ o, Journal of High Energy Physics 1 , 49 (2008). 

A. Heister et al., Physics Letters B 583 , 247 (2004). 

D. N´ u˜ nez et al., JCAP 5 , 3 (2008). 

J. F. Navarro, C. S. Frenk, and S. D. M. White, ApJ 490 , 493 (1997). 

S. Ando et al., PRD 75 , 063519 (2007b). 

