论文标题
用定向超高的能量伽马射线限制限制超重量衰减的暗物质
Constraining superheavy decaying dark matter with directional ultra-high energy gamma-ray limits
论文作者
论文摘要
矮球星系是具有小或微不足道的天体物理背景的紧凑型恒星物体，被广泛认为是从暗物质衰变和歼灭中寻找信号的有前途的目标。我们对超高腐烂的暗物质的生命周期提出了限制，该黑物质分支在质量范围内的$ q \ bar {q} $通道$ 10^{19} -10^{25} $ eV基于超高的（UHE）gamma rays的定向限制，该gamma rays由Pierre Augerer Obipervoration and thereScope telescope获得了。考虑到UHE光子向地球传播期间的衰减效应被考虑在于URSA Major II，Coma Berenices和Segue I星系的最强限制。
Dwarf spheroidal galaxies are compact stellar objects with small or negligible astrophysical backgrounds, widely considered as promising targets to search for a signal from the dark matter decay and annihilation. We present constraints on the lifetime of the superheavy decaying dark matter branching to the $q\bar{q}$ channel in the mass range $10^{19} - 10^{25}$ eV based on the directional limits on the ultra-high-energy (UHE) gamma rays obtained by the Pierre Auger Observatory and the Telescope Array experiment. Attenuation effects during the propagation of UHE photons towards Earth are taken into account, with the strongest constraints derived for the Ursa Major II, Coma Berenices and Segue I galaxies.
