论文标题
中微子对歼灭（$ν\barν\ longrightArrow e^{ - } e^{+} $周围的$ f（r）$ global monopole
The neutrino pair annihilation ($ν\barν\longrightarrow e^{-}e^{+}$)around a massive source with an $f(R)$ global monopole
论文作者
论文摘要
在这项工作中，我们研究了围绕涉及$ f（r）$全球单极的重力物体的中微子对歼灭。我们得出并计算比率$ \ frac {\ dot {q}}} {\ dot {q_ {newt}}} $，这意味着在牛顿情况下，每个单位时间的能量沉积时间都超过了。发现与一般相对论的偏差越多，能够使能量更大的能量摆脱歼灭，而比率更大。还应指出的是，全局单极的存在使比率$ \ frac {\ dot {q}}} {\ dot {q_ {q_ {newt}} $急剧增加，从而引起较重的伽马射线爆发。我们还讨论了导数$ \ frac {d \ dot {q}} {dr} $作为半径$ r $ star的函数，以表明类似的字符，表明爱因斯坦的重力和带有统一理论顺序的全球单极序列的大量修改将增加$ \ frac {d \ dot {d \ dot {d \ dot {q Q}} $}拥有$ F（R）$全球单极的恒星体可以作为伽马射线爆发的来源。此外，我们可以选择因子$ψ_{0} $与加速宇宙相当，同时调节全局单极的参数$η$，以使比率曲线与天文学的结果相吻合。可以从天体物理观测中探测单子。
In this work we investigate the neutrino pair annihilation around a gravitational object involving an $f(R)$ global monopole. We derive and calculate the ratio $\frac{\dot{Q}}{\dot{Q_{Newt}}}$ meaning that the energy deposition per unit time is over that in the Newtonian case. It is found that the more deviation from general relativity leads more energy to set free from the annihilation with greater ratio value. It should also be pointed out that the existence of global monopole makes a sharp increase in the ratio $\frac{\dot{Q}}{\dot{Q_{Newt}}}$, causing heavier gamma-ray burst. We also discuss the derivative $\frac{d\dot{Q}}{dr}$ as a function of radius $r$ of star to show the similar characters that the considerable modification of Einstein's gravity and the global monopole with unified theory order will raise the amount of $\frac{d\dot{Q}}{dr}$ greatly. The stellar body with $f(R)$ global monopole can be well qualified as a source of gamma-ray bursts. Moreover, we can select the factor $ψ_{0}$ to be comparable with the accelerating universe while regulate the parameter $η$ for the global monopole in order to make the ratio curves to coincide with the results from astronomy. It is possible to probe the monopole from astrophysical observations.
