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.
Description
Ultra Light Boson Dark Matter and Event Horizon Telescope Observations of M87*
%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
}