论文标题
在21 cm的黑暗时代的宇宙宇宙学中，从惰性双线模型的暗物质歼灭横截面的界限
Bounds on Dark Matter Annihilation Cross-sections from Inert Doublet Model in the context of 21 cm Cosmology of Dark Ages
论文作者
论文摘要
我们在黑暗时代（$ z \ sim100 $）的亮度温度21厘米信号$Δt_{21} $中的亮度温度的波动中，在Inter Doublet模型（IDM）中具有暗物质候选者。然后，我们探讨IDM暗物质不同分数对$ΔT_{21} $信号的影响。 IDM暗物质质量是在几十个GEV区域以及500 GEV以上的高质量区域中选择的。已经观察到$ΔT_{21} $信号在$ 70-80 $ GEV的暗物质质量范围内更敏感。还获得了该暗物质的歼灭横截面的下限，分析了$ΔT_{21} $信号。 This is found to lie within the range $6.5 \times 10^{-29} \,\, \rm{cm^3 / sec} \leq \langleσv\rangle \leq 4.88\times 10^{-26}\,\, \rm{cm^ 3 / sec}$ for the IDM dark matter mass range $10 \, {\rm gev} \ leqm_χ\ \ leq 990 \，{\ rm gev} $。
We study the fluctuations in the brightness temperature of 21-cm signal $δT_{21}$ at the dark ages ($z\sim100$) with a dark matter candidate in Inter Doublet Model (IDM). We then explore the effects of different fractions of IDM dark matter on $δT_{21}$ signal. The IDM dark matter masses are chosen in few tens of GeV region as well as in the high mass region beyond 500 GeV. It has been observed that the $δT_{21}$ signal is more sensitive in the dark matter mass range of $70 - 80$ GeV. A lower bound on annihilation cross-section for this dark matter is also obtained analyzing the $δT_{21}$ signal. This is found to lie within the range $6.5 \times 10^{-29} \,\, \rm{cm^3 / sec} \leq \langleσv\rangle \leq 4.88\times 10^{-26}\,\, \rm{cm^ 3 / sec}$ for the IDM dark matter mass range $10 \, {\rm GeV} \leq m_χ\leq 990 \,{\rm GeV} $.
