Kavli Affiliate: Lijing Shao
| First 5 Authors: Jiang-Chuan Yu, Jiang-Chuan Yu, , ,

| Summary:
Ultralight dark matter (ULDM) model is a leading dark matter candidate that arises naturally in extensions of the Standard Model. In the Galactic Center, ULDM manifests as dense hydrogen-like boson clouds or self-gravitating soliton cores. We present the first study of the gravitational effects of these ULDM structures on pulsar orbits around Sgr A*, using pulsar timing as a precision dynamical probe, based on a comprehensive and practical framework that includes various kinds of black hole and orbital parameters. Our analysis shows that long-term pulsar monitoring — one of the key objectives of future SKA science — could detect a boson cloud with a total mass as low as $O(M_odot)$ for boson mass $m sim 10^-18,mathrmeV$, and probe a wide range of soliton core masses in the lower-mass regime, assuming a conservative timing precision of $σ_mathrmTOA=1,mathrmms$.
| Search Query: arXiv Query: search_query=au:”Shao Lijing”&id_list=&start=0&max_results=3
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