Constraints on Compact Dark Matter from Gravitational Wave Microlensing
ASTROPHYSICAL JOURNAL LETTERS(2022)
Abstract
If a significant fraction of dark matter is in the form of compact objects, they will cause microlensing effects in the gravitational wave signals observable by LIGO and Virgo. From the nonobservation of microlensing signatures in the binary black hole events from the first two observing runs and the first half of the third observing run, we constrain the fraction of compact dark matter in the mass range 10(2)-10(5) M (circle dot) to be less than similar or equal to 50%-80% (details depend on the assumed source population properties and the Bayesian priors). These modest constraints will be significantly improved in the next few years with the expected detection of thousands of binary black hole events, providing a new avenue to probe the nature of dark matter.
MoreTranslated text
Key words
LIGO and Virgo,Binary Black Hole,Pulsar Timing,Compact Binary Mergers
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined