Near-infrared polarimetry setting constraints on the orbiting spot model for Sgr A* flares

2006/09/06 by L. Meyer, A. Eckart, R. Schödel +7 · 5 citations
Earth and Planetary Sciences · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Context (archaeology) #Flare #Geology #High-pressure geophysics and materials #Infrared #Optics #Physics #Polarimetry #Polarization (electrochemistry) #Scattering #Solar flare #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:20065925

accepted by A&A for publication

openalex publication_date 2006/09/06 · arxiv created 2006/10/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Context.Recent near-infrared polarization measurements of Sgr A* show that its emission is significantly polarized during flares and consists of a non- or weakly polarized main flare with highly polarized sub-flares. The flare activity suggests a quasi-periodicity of ∼20 min in agreement with previous observations.

Citations

• Time Delay in Black Hole Gravitational Lensing as a Distance Estimator
• Polarimetry of near-infrared flares from Sagittarius A*
• Hydrodynamical Accretion onto Sagittarius A* from Distributed Point Sources
• SINFONI in the Galactic Center: Young Stars and Infrared Flares in the Central Light‐Month
• Magnetically Driven Accretion Flows in the Kerr Metric. I. Models and Overall Structure
• Stellar Dynamics in the Central Arcsecond of Our Galaxy
• First simultaneous NIR/X-ray detection of a flare from Sgr A*

Cited by

• On the charge of the Galactic centre black hole
• Stellar Transits across a Magnetized Accretion Torus as a Mechanism for Plasmoid Ejection
• Polarized NIR and X-ray flares from Sagittarius A*
• A 600 Minute Near-Infrared Light Curve of Sagittarius A*
• Modeling the orbital motion of Sgr A*’s near-infrared flares