Tidal disruption of solitons in self-interacting ultralight axion dark matter
Tidal disruption of solitons in self-interacting ultralight axion dark matter
复制标题
自相互作用超轻轴子暗物质中孤子的潮汐破坏
DOI:
10.1103/physrevd.105.123540
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发表时间:
2022
影响因子:
5
通讯作者:
Wechsler, Risa H.
中科院分区:
文献类型:
--
作者:
Glennon, Noah;Nadler, Ethan O.;Musoke, Nathan;Banerjee, Arka;Prescod-Weinstein, Chanda;Wechsler, Risa H.
Ultralight axions (ULAs) are promising dark matter candidates that can have a distinct impact on the formation and evolution of structure on nonlinear scales relative to the cold, collisionless dark matter (CDM) paradigm. However, most studies of structure formation in ULA models do not include the effects of self-interactions, which are expected to arise generically. Here, we study how the tidal evolution of solitons is affected by ULA self-interaction strength and sign. Specifically, using the pseudospectral solverUltraDark.jl, we simulate the tidal disruption of self-interacting solitonic cores as they orbit aNavarro-Frenk-White CDM host halo potential for a range of orbital parameters, assuming a fiducial ULA particle mass of. We find that repulsive (attractive) self-interactions significantly accelerate (decelerate) soliton tidal disruption. We also identify a degeneracy between the self-interaction strength and soliton mass that determines the efficiency of tidal disruption, such that disruption timescales are affected at thelevel for variations in the dimensionless ULA self-coupling fromto.
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DOI:
10.3847/2041-8213/abf501
发表时间:
2021
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
Hayashi Kohei;Ferreira Elisa G. M.;Chan Hei Yin Jowett
通讯作者:
Chan Hei Yin Jowett
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
X. Du
通讯作者:
X. Du
影响因子:
4.8
作者:
Omid Sameie;M. Boylan-Kolchin;R. Sanderson;Drona Vargya;P. Hopkins;A. Wetzel;J. Bullock;A. Graus;V. Robles
通讯作者:
Omid Sameie;M. Boylan-Kolchin;R. Sanderson;Drona Vargya;P. Hopkins;A. Wetzel;J. Bullock;A. Graus;V. Robles
影响因子:
4.8
作者:
Tyler Kelley;J. Bullock;S. Garrison-Kimmel;M. Boylan-Kolchin;M. Pawlowski;A. Graus
通讯作者:
Tyler Kelley;J. Bullock;S. Garrison-Kimmel;M. Boylan-Kolchin;M. Pawlowski;A. Graus
DOI:
10.1016/j.dark.2016.10.005
发表时间:
2016
期刊:
arXiv: High Energy Physics - Phenomenology
影响因子:
--
作者:
JiJi Fan
通讯作者:
JiJi Fan