Ultralight Boson Dark Matter and Event Horizon Telescope Observations of M87^{*}.
Ultralight Boson Dark Matter and Event Horizon Telescope Observations of M87^{*}.
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DOI:
10.1103/physrevlett.123.021102
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发表时间:
2019-04
影响因子:
8.6
通讯作者:
H. Davoudiasl;P. Denton
中科院分区:
文献类型:
--
作者:
H. Davoudiasl;P. Denton
The initial data from the Event Horizon Telescope (EHT) on M87^{*}, the supermassive black hole at the center of the M87 Galaxy, provide direct observational information on its mass, spin, and accretion disk properties. A combination of the EHT data and other constraints provides evidence that M87^{*} has a mass ∼6.5×10^{9} M_{⊙}. EHT also inferred the dimensionless spin parameter |a^{*}|≳0.5 from jet properties; a separate recent analysis using only the light from near M87^{*} as measured by the EHT Collaboration found |a^{*}|=0.9±0.1. These determinations disfavor ultralight bosons of mass μ_{b}∈(0.85,4.6)×10^{-21} eV for spin-one bosons and μ_{b}∈(2.9,4.6)×10^{-21} eV for spin-zero bosons, within the range considered for fuzzy dark matter, invoked to explain dark matter distribution on approximately kiloparsec scales. Future observations of M87^{*} could be expected to strengthen our conclusions.