Confronting the jet model of Sgr A* with the Faraday rotation measure observations
arXiv:1410.5906 · doi:10.1088/0004-637X/798/1/22
Abstract
Sgr A* is probably the supermassive black hole being investigated most extensively due to its proximity. Several theoretical models for its steady state emission have been proposed in the past two decades. Both the radiative-inefficient accretion flow and the jet model have been shown to well explain the observed spectral energy distribution. Faraday rotation measure (RM) has been unambiguously measured at submillimeter wavelength, but has only been tested against the accretion flow model. Here we first calculate the RM based on the jet model and find that the predicted value is two orders of magnitude lower than the measured value. We then include an additional contribution from the accretion flow in front of the jet and show that the measured RM may be reconciled with the model under some tight constraints. The main constraint is that the inclination angle should be greater than . But this requirement is not consistent with an existing observational estimate of the inclination angle.
arXiv comment6 pages, 4 figures, Accepted for publication in ApJ
References in corpus (58)
- Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits
- Hot Accretion Flows Around Black Holes
- On the Fate of Gas Accreting at a Low Rate onto a Black Hole
- Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
- The Galactic Center Massive Black Hole and Nuclear Star Cluster
- Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
- General Relativistic Magnetohydrodynamic Simulations of Magnetically Choked Accretion Flows around Black Holes
- Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
- Chandra X-ray Spectroscopic Imaging of Sgr A* and the Central Parsec of the Galaxy
- Magnetically Arrested Disk: An Energetically Efficient Accretion Flow
- Nonthermal Electrons in Radiatively Inefficient Accretion Flow Models of Sagittarius A*
- The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
- Three-dimensional MHD Simulations of Radiatively Inefficient Accretion Flows
- GRMHD Simulations of Magnetized Advection Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows
- The orbit of the star S2 around SgrA* from VLT and Keck data
- A strong magnetic field around the supermassive black hole at the centre of the Galaxy
- Convection-Dominated Accretion Flows
- Self-Similar Accretion Flows with Convection
- Advection-Dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
- Hydrodynamical Non-radiative Accretion Flows in Two-Dimensions
- Radiative Models of Sgr A* from GRMHD Simulations
- Dissecting X-ray-emitting Gas around the Center of our Galaxy
- The Dynamical Structure of Nonradiative Black Hole Accretion Flows
- An Unambiguous Detection of Faraday Rotation in Sagittarius A*
- Numerical Simulation of Hot Accretion Flows (II): Nature, Origin, and Properties of Outflow and Their Possible Observational Applications
- A Jet-ADAF model for Sgr A*
- Magnetically Driven Accretion in the Kerr Metric III: Unbound Outflows
- Spectrum of Optically Thin Advection Dominated Accretion Flow around a Black Hole: Application to Sgr A*
- The Shortest Known Period Star Orbiting our Galaxy's Supermassive Black Hole
- The Submillimeter Bump in Sgr A* from Relativistic MHD Simulations
- Pulsar rotation measures and the magnetic structure of our Galaxy
- Numerical Simulation of Hot Accretion Flows (I): A Large Radial Dynamical Range and the Density Profile of Accretion Flow
- Prograde and Retrograde Black Holes: Whose Jet is More Powerful?
- Constraining the Accretion Rate Onto Sagittarius A* Using Linear Polarization
- Evidence for Low Black Hole Spin and Physically Motivated Accretion Models from Millimeter VLBI Observations of Sagittarius A*
- A Helical Magnetic Field in the Jet of 3C 273
- Galactic Centre stellar winds and Sgr A* accretion
- Sagittarius A* Accretion Flow and Black Hole Parameters from General Relativistic Dynamical and Polarized Radiative Modeling
- Helical Magnetic Fields Associated with the Relativistic Jets of Four BL Lac Objects
- Radiatively Inefficient Accretion: Breezes, Winds and Hyperaccretion
- Variable accretion and emission from the stellar winds in the Galactic centre
- Towards the event horizon -- the supermassive black hole in the Galactic Center
- Coupled jet-disk model for Sgr A*: explaining the flat-spectrum radio core with GRMHD simulations of jets
- Rotating Accretion Flows: From Infinity to the Black Hole
- How to hide large scale outflows: size constraints on the jets of Sgr A*
- The Angular Broadening of the Galactic Center Pulsar SGR J1745-29: A New Constraint on the Scattering Medium
- A View through Faraday's fog: Parsec scale rotation measures in AGN
- Variable Linear Polarization from Sagittarius A*: Evidence for a Hot Turbulent Accretion Flow
- The Rotation Measure and 3.5mm Polarization of Sgr A*
- Magnetic Fields in Quasar Cores II
- Black Hole Shadow Image and Visibility Analysis of Sagittarius A*
- Faraday Rotation Measures in the Parsec-Scale Jets of the Radio Galaxies M87, 3C 111, and 3C 120
- The Intrinsic Two-Dimensional Size of Sagittarius A*
- Polarized mm And sub-mm Emission From Sgr A* At The Galactic Center
- Evidence for Ordered Magnetic Fields in the Quasar Environment
- Faraday Rotation in Global Accretion Disk Simulations: Implications for Sgr A*
- Testing RIAF model for Sgr A* using the size measurements
- Inverse Depolarization: A Potential Probe of Internal Faraday Rotation and Helical Magnetic Fields in Extragalactic Radio Jets
Cited by in corpus (8)
- Spectral Energy Distribution of the inner accretion flow around Sgr A* -- Clue for a weak outflow in the innermost region
- Fundamental Plane of Black Hole Activity in Quiescent Regime
- Towards Self-Consistent Modelling of the Sgr A* Accretion Flow: Linking Theory and Observation
- Catching jetted tidal disruption events early in millimetre
- Exploring the accretion model of M87 and 3C 84 with the Faraday rotation measure observations
- An accretion-jet model for M87: interpreting the spectral energy distribution and Faraday rotation measure
- Density profile of ambient circumnuclear medium in Seyfert 1 galaxies
- Rotation Measure synthesis study and polarized properties of PSR J1745-2900 at 7 mm