%0 Generic %1 davoudiasl2019ultra %A Davoudiasl, Hooman %A Denton, Peter B. %D 2019 %K tifr %R 10.1103/PhysRevLett.123.021102 %T Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87* %U http://arxiv.org/abs/1904.09242 %X 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 provide evidence that M87$^*$ has a mass $6.5 10^9\,M_ødot$ and dimensionless spin parameter $|a^*|0.5$. These determinations disfavor ultra light bosons of mass $\mu_b10^-21$ eV, within the range considered for fuzzy dark matter, invoked to explain dark matter distribution on $\sim$ kpc scales. Future observations of M87$^*$ could be expected to strengthen our conclusions.

@misc{davoudiasl2019ultra, abstract = {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 provide evidence that M87$^*$ has a mass $\sim 6.5 \times 10^9\,M_\odot$ and dimensionless spin parameter $|a^*|\gtrsim 0.5$. These determinations disfavor ultra light bosons of mass $\mu_b\sim 10^{-21}$ eV, within the range considered for fuzzy dark matter, invoked to explain dark matter distribution on $\sim$ kpc scales. Future observations of M87$^*$ could be expected to strengthen our conclusions.}, added-at = {2019-07-15T06:45:37.000+0200}, author = {Davoudiasl, Hooman and Denton, Peter B.}, biburl = {https://www.bibsonomy.org/bibtex/225efdf57c5c7f11d298f41420814abef/citekhatri}, description = {Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*}, doi = {10.1103/PhysRevLett.123.021102}, interhash = {46440f46ab20937ade5aad85a4def21f}, intrahash = {25efdf57c5c7f11d298f41420814abef}, keywords = {tifr}, note = {cite arxiv:1904.09242Comment: 4 pages, 2 figures}, timestamp = {2019-07-15T06:45:37.000+0200}, title = {Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*}, url = {http://arxiv.org/abs/1904.09242}, year = 2019 }