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Title: First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring

Journal Article · · The Astrophysical Journal. Letters (Online)
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The Event Horizon Telescope (EHT) has mapped the central compact radio source of the elliptical galaxy M87 at 1.3 mm with unprecedented angular resolution. Here we consider the physical implications of the asymmetric ring seen in the 2017 EHT data. To this end, we construct a large library of models based on general relativistic magnetohydrodynamic (GRMHD) simulations and synthetic images produced by general relativistic ray tracing. We compare the observed visibilities with this library and confirm that the asymmetric ring is consistent with earlier predictions of strong gravitational lensing of synchrotron emission from a hot plasma orbiting near the black hole event horizon. The ring radius and ring asymmetry depend on black hole mass and spin, respectively, and both are therefore expected to be stable when observed in future EHT campaigns. Overall, the observed image is consistent with expectations for the shadow of a spinning Kerr black hole as predicted by general relativity. If the black hole spin and M87's large scale jet are aligned, then the black hole spin vector is pointed away from Earth. Models in our library of non-spinning black holes are inconsistent with the observations as they do not produce sufficiently powerful jets. At the same time, in those models that produce a sufficiently powerful jet, the latter is powered by extraction of black hole spin energy through mechanisms akin to the Blandford-Znajek process. We briefly consider alternatives to a black hole for the central compact object. Analysis of existing EHT polarization data and data taken simultaneously at other wavelengths will soon enable new tests of the GRMHD models, as will future EHT campaigns at 230 and 345 GHz.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
The Event Horizon Telescope Collaboration
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1574760
Report Number(s):
LA-UR-19-31023; TRN: US2100336
Journal Information:
The Astrophysical Journal. Letters (Online), Vol. 875, Issue 1; ISSN 2041-8213
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 422 works
Citation information provided by
Web of Science

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The Structure of the M87 Jet: A Transition from Parabolic to Conical Streamlines text January 2011
Jet Launching Structure Resolved Near the Supermassive Black Hole in M87 text January 2012
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The central parsecs of M87: jet emission and an elusive accretion disc text January 2015
Shadow of rotating regular black holes text January 2016
Exploring the accretion model of M87 and 3C 84 with the Faraday rotation measure observations text January 2016
Electron and proton heating in trans-relativistic magnetic reconnection text January 2017
RAPTOR I: Time-dependent radiative transfer in arbitrary spacetimes text January 2018
The Next Generation Virgo Cluster Survey (NGVS). XVIII. Measurement and Calibration of Surface Brightness Fluctuation Distances for Bright Galaxies in Virgo (and Beyond) text January 2018
The Structure and Dynamics of the Sub-parsec Scale Jet in M87 Based on 50 VLBA Observations Over 17 Years at 43 GHz text January 2018
The Current Ability to Test Theories of Gravity with Black Hole Shadows text January 2018
Black Hole Shadow of Sgr A$^{*}$ in Dark Matter Halo text January 2018
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Parabolic Jets from the Spinning Black Hole in M87 text January 2018
First M87 Event Horizon Telescope Results. II. Array and Instrumentation text January 2019
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole text January 2019
Magnetically Driven Accretion Flows in the Kerr Metric I: Models and Overall Structure text January 2003
On The Nature of the Compact Dark Mass at the Galactic Center text January 2005
Magnetically Driven Jets in the Kerr Metric text January 2005
Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars text January 1994
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Cited By (66)

VLBI imaging of black holes via second moment regularization journal September 2019
Can we distinguish black holes from naked singularities by the images of their accretion disks? journal October 2019
Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope journal February 2020
Monitoring of the radio galaxy M 87 during a low-emission state from 2012 to 2015 with MAGIC journal January 2020
Resolving accretion flows in nearby active galactic nuclei with the Event Horizon Telescope journal October 2019
Measurement of the spin of the M87 black hole from its observed twisted light journal November 2019
Influence of geometrical configuration on low angular momentum relativistic accretion around rotating black holes journal August 2019
Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image journal August 2019
Higher order corrections to deflection angle of massive particles and light rays in plasma media for stationary spacetimes using the Gauss-Bonnet theorem journal November 2019
Charged cosmological black holes: A thorough study of a family of solutions journal November 2019
Timelike geodesics in naked singularity and black hole spacetimes journal December 2019
Observational signature of a near-extremal Kerr-Sen black hole in the heterotic string theory journal January 2020
Silhouette of M87*: A new window to peek into the world of hidden dimensions journal February 2020
Rotating black holes with an anisotropic matter field journal March 2020
Relativistic Aspects of Accreting Supermassive Black Hole Binaries in Their Natural Habitat: A Review journal May 2019
Relativistic Jets from AGN Viewed at Highest Angular Resolution journal December 2019
The Brightest Point in Accretion Disk and Black Hole Spin: Implication to the Image of Black Hole M87* journal August 2019
Kerr Black Holes within a Modified Theory of Gravity journal August 2019
EHT Constraint on the Ultralight Scalar Hair of the M87 Supermassive Black Hole journal November 2019
Black Hole Spin Signature in the Black Hole Shadow of M87 in the Flaring State journal June 2019
Toward a Full MHD Jet Model of Spinning Black Holes. I. Framework and a Split Monopole Example journal July 2019
EHT-HOPS Pipeline for Millimeter VLBI Data Reduction journal August 2019
Kinematics of the M87 Jet in the Collimation Zone: Gradual Acceleration and Velocity Stratification journal December 2019
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole journal April 2019
Modeling non-thermal emission from the jet-launching region of M 87 with adaptive mesh refinement journal November 2019
Dynamical evolutions of $ \newcommand{\e}{{\rm e}} \ell$ -boson stars in spherical symmetry journal October 2019
Asymptotic safety casts its shadow journal June 2019
Black hole hair from scalar dark matter journal June 2019
Curvature radius and Kerr black hole shadow journal August 2019
M87 black hole mass and spin estimate through the position of the jet boundary shape break journal August 2019
Weak and strong deflection gravitational lensing by a renormalization group improved Schwarzschild black hole journal December 2019
GR-MHD Disk Winds and Jets from Black Holes and Resistive Accretion Disks journal August 2019
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project journal August 2019
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration journal April 2019
The Spin of M87* journal July 2019
The Shadow of a Spherically Accreting Black Hole journal November 2019
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project collection January 2019
Black Hole Spin Measurement Based on Time-domain VLBI Observations of Infalling Gas Clouds journal December 2019
ALMA Observations of the Terahertz Spectrum of Sagittarius A* journal August 2019
rPICARD: A CASA-based calibration pipeline for VLBI data: Calibration and imaging of 7 mm VLBA observations of the AGN jet in M 87 journal June 2019
Scale-invariance of black hole accretion: modelling emission from a black hole X-ray binary with relativistic accretion flow simulations journal November 2019
Testing the Schwarzschild metric in a strong field region with the Event Horizon Telescope journal September 2019
On the Calculation of the Effective Polytropic Index in Space Plasmas journal October 2019
Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-Ray Flares journal November 2019
Radiative Properties of Magnetically Arrested Disks journal December 2019
First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole journal April 2019
Orientation of the crescent image of M 87* journal February 2020
Strong gravitational lensing by wormholes journal July 2019
The surprisingly small impact of magnetic fields on the inner accretion flow of Sagittarius A* fueled by stellar winds journal December 2019
Observability of spherical photon orbits in near-extremal Kerr black holes journal August 2019
Gravitational perturbations of a Kerr black hole in f ( R ) gravity journal June 2019
Dissipative Processes and Their Role in the Evolution of Radio Galaxies journal July 2019
The Effects of Finite Distance on the Gravitational Deflection Angle of Light journal November 2019
Detecting the Hadron-Quark Phase Transition with Gravitational Waves journal June 2019
General-relativistic Resistive Magnetohydrodynamics with Robust Primitive-variable Recovery for Accretion Disk Simulations journal September 2019
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project text January 2019
Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image text January 2019
Image of the Janis-Newman-Winicour naked singularity with a thin accretion disk text January 2019
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole text January 2019
GR-MHD disk winds and jets from black holes and resistive accretion disks text January 2019
Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-ray Flares text January 2019
Orientation of the crescent image of M 87* text January 2019
Testing the Schwarzschild metric in a strong field region with the Event Horizon Telescope text January 2019
Can we distinguish black holes from naked singularities by the images of their accretion disks? text January 2019
Lensing by Kerr Black Holes text January 2019
The Surprisingly Small Impact of Magnetic Fields On The Inner Accretion Flow of Sagittarius A* Fueled By Stellar Winds text January 2020

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