Cosmic constraints rule out s-wave annihilation of light dark matter
نویسندگان
چکیده
منابع مشابه
Indirect dark matter signatures in the cosmic dark ages. I. Generalizing the bound on s-wave dark matter annihilation from Planck results
Citation Slatyer, Tracy R. "Indirect dark matter signatures in the cosmic dark ages. I. Generalizing the bound on s-wave dark matter annihilation from Planck results. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please shar...
متن کاملEffects of Dark Matter Annihilation on the Cosmic Microwave Background
We study the effects of dark matter annihilation during and after the cosmic recombination epoch on the cosmic microwave background anisotropy, taking into account the detailed energy deposition of the annihilation products. It is found that a fairly stringent constraint on the annihilation cross section is imposed for TeV scale dark matter masses from WMAP observations.
متن کاملCosmic Gamma-Ray Background Anisotropies and Dark Matter Annihilation
The extragalactic cosmic gamma-ray background (CGB) is expected to provide indirect signatures of the presence of Dark Matter (DM) through gamma-rays produced in DM annihilations. In particular, DM can leave its imprint not only in the CGB energy spectrum but also in the peculiar pattern and intensity of the CGB anisotropies. These are expected to differ significantly with respect to the case o...
متن کاملCosmic gamma-ray background from dark matter annihilation
High-energy photons from pair annihilation of dark matter particles contribute to the cosmic gamma-ray background (CGB) observed in a wide energy range. The precise shape of the energy spectrum of CGB depends on the nature of dark matter particles. In order to discriminate between the signals from dark matter annihilation and other astrophysical sources, however, the information from the energy...
متن کاملUltrahigh energy cosmic rays from dark matter annihilation
Explaining the origin of cosmic rays at energies above the Greisen–Zatsepin–Kuzmin bound EGZK ≃ 4×10 eV is an interesting and puzzling scientific challenge for several reasons: AGASA observes a flux of order of one cosmic ray event per 100 km per year at energies above 10 eV [1], thus confirming the flux seen by previous smaller ground based arrays on the northern hemisphere, see e.g. [2]. On t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.023515