کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10723080 | 1033830 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distinguishing dark matter annihilation enhancement scenarios via halo shapes
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Distinguishing dark matter annihilation enhancement scenarios via halo shapes Distinguishing dark matter annihilation enhancement scenarios via halo shapes](/preview/png/10723080.png)
چکیده انگلیسی
Sommerfeld enhancement and Breit-Wigner enhancement of the dark matter annihilation have been proposed to explain the “boost factor” which is suggested by observed cosmic ray excesses. Although these two scenarios can provide almost indistinguishable effects on the cosmic ray fluxes, the cross sections of the self-interaction in those enhancement mechanisms are drastically different. As a result, we might be able to distinguish them by examining the effects of the self-interaction on the dark matter halo shapes. In the Sommerfeld enhancement models with mÏâ²100 MeV and mDMâ²3 TeV, the self-interaction of dark matter can lead to more spherical dark halo. In the Breit-Wigner models, the dark matter is effectively collisionless.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 692, Issue 2, 23 August 2010, Pages 70-73
Journal: Physics Letters B - Volume 692, Issue 2, 23 August 2010, Pages 70-73
نویسندگان
Masahiro Ibe, Hai-Bo Yu,