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On the change of old neutron star masses with galactocentric distance
Physics of the Dark Universe ( IF 5.5 ) Pub Date : 2020-01-30 , DOI: 10.1016/j.dark.2020.100484
Antonino Del Popolo , Maksym Deliyergiyev , Morgan Le Delliou , Laura Tolos , Fiorella Burgio

We show that the pulsar mass depends on the environment, and that it decreases going towards the centre of the Milky Way. This is due to two combined effects, the capture and accumulation of self-interacting, non-annihilating dark matter by pulsars, and the increase of the dark matter density going towards the galactic centre. We show that mass decrease depends both on the density profile of dark matter, steeper profiles producing a faster and larger decrease of the pulsar mass, and on the strength of self-interaction. Once future observations will provide the pulsar mass in a dark matter rich environment, close to the galactic centre, the present result will be able to put constraints on the characteristics of our Galaxy halo dark matter profile, on the nature of dark matter, namely on its annihilating or non-annihilating nature, on its strength of self-interaction, and on the particle mass.



中文翻译:

关于旧中子恒星质量的变角变距

我们表明,脉冲星质量取决于环境,并且朝着银河系的中心方向下降。这是由于两种综合作用造成的:脉冲星捕获和积累了自相互作用的无non灭性暗物质,并且暗物质密度向银河系中心移动。我们表明质量下降既取决于暗物质的密度分布,也取决于较陡峭的轮廓产生脉冲星质量的下降更快和更大,并且取决于自相互作用的强度。一旦将来的观测将在靠近银河系中心的富含暗物质的环境中提供脉冲星质量,则当前结果将能够限制我们银河系晕暗物质剖面的特征,暗物质的性质,即其消灭或非消灭的性质,

更新日期:2020-01-30
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