Galactic rotation curves versus ultralight dark matter: A systematic comparison with SPARC data
Galactic rotation curves versus ultralight dark matter: A systematic comparison with SPARC data
复制标题
星系旋转曲线与超轻暗物质：与 SPARC 数据的系统比较
作者：
Nitsan Bar;Kfir Blum;Chenren Sun
我们寻找并放置在超轻暗物质（ULDM）孤子核心的旋转为主的星系的印记观测约束。扩展以前的分析，我们发现了一个保守的约束，不利于在ULDM粒子质量m的宽范围内的一些数值模拟中发现的孤子-宿主晕关系。结合观测约束和理论论证，假设孤子-晕关系是正确的，我们的结果不支持ULDM在10 − 24 eV（cid：46）m（cid：46）10 − 20 eV范围内包含100%的宇宙学暗物质。约束探测ULDM分数下至f（cid：46）0。三是暗物质总量。(cid（135）
We look for and place observational constraints on the imprint of ultralight dark matter (ULDM) soliton cores in rotation-dominated galaxies. Extending previous analyses, we find a conservative constraint which disfavors the soliton-host halo relation found in some numerical simulations over a broad range in the ULDM particle mass m . Combining the observational constraints with theoretical arguments for the efficiency of soliton formation via gravitational dynamical relaxation, and assuming that the soliton-halo relation is correct, our results disfavor ULDM from comprising 100% of the total cosmological dark matter in the range 10 − 24 eV (cid:46) m (cid:46) 10 − 20 eV . The constraints probe the ULDM fraction down to f (cid:46) 0 . 3 of the total dark matter. (cid:135)
光暗物质能解决核心尖点问题吗？
影响因子：
5
作者：
Deng, Heling;Hertzberg, Mark P.;Namjoo, Mohammad Hossein;Masoumi, Ali
通讯作者：
Masoumi, Ali