A radio parallax to the black hole X-ray binary MAXI J1820+070

Abstract

Using the Very Long Baseline Array and the European Very Long Baseline Interferometry Network we have made a precise measurement of the radio parallax of the black hole X-ray binary MAXI\,J1820+070, providing a model-independent distance to the source. Our parallax measurement of ($0.348\pm 0.033$) mas for MAXI J1820+070 translates to a distance of ($2.96\pm 0.33$) kpc. This distance implies that the source reached ($15\pm 3)\%$ of the Eddington luminosity at the peak of its outburst. Further, we use this distance to refine previous estimates of the jet inclination angle, jet velocity and the mass of the black hole in MAXI J1820+070 to be ($63\pm 3{)}^{\circ }$, ($0.89\pm 0.09)c$ and ($9.2\pm 1.3)M_{\odot }$, respectively.

5 pages, 3 figures, Published in MNRAS

References in corpus (10)

• A Parallax Distance to the Microquasar GRS 1915+105 and a Revised Estimate of its Black Hole Mass
• VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy
• Neutron star kicks by the gravitational tug-boat mechanism in asymmetric supernova explosions: progenitor and explosion dependence
• Estimating distances from parallaxes. II. Performance of Bayesian distance estimators on a Gaia-like catalogue
• Astrometric accuracy of phase-referenced observations with the VLBA and EVN
• A rapidly-changing jet orientation in the stellar-mass black hole V404 Cygni
• X-ray and Optical Monitoring of State Transitions in MAXI J1820+070
• Investigating state transition luminosities of Galactic black hole transients in the outburst decay
• An HI absorption distance to the black hole candidate X-ray binary MAXI J1535-571
• Techniques for Accurate Parallax Measurements for 6.7-GHz Methanol Masers

Cited by in corpus (3)

• An extremely powerful long-lived superluminal ejection from the black hole MAXI J1820+070
• Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
• A spectral study of the black hole X-ray binary MAXI J1820+070 with AstroSat and NuSTAR