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

P. Atri, J. C. A. Miller-Jones, A. Bahramian, R. M. Plotkin, A. T. Deller, P. G. Jonker, T. J. Maccarone, G. R. Sivakoff, R. Soria, D. Altamirano, T. Belloni, R. Fender, E. Koerding, D. Maitra, S. Markoff, S. Migliari, D. Russell, T. Russell, C. L. Sarazin, A. J. TetarenkoV. Tudose

Research output: Contribution to journalArticle

### 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 $0.348\pm0.033$ mas for MAXI\,J1820+070 translates to a distance of $2.96\pm0.33$ kpc. This distance implies that the source reached $15\pm3\%$ 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 $62\pm3^{\circ}$, $0.88\pm0.09c$ and $9.5\pm1.4 M_{\odot}$, respectively
Original language English (US) Monthly Notices of the Royal Astronomical Society Accepted/In press - Jan 1 2020

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parallax
outburst
x rays
Very Long Baseline Array (VLBA)
luminosity
estimates

### Keywords

• Astrophysics - High Energy Astrophysical Phenomena

### Cite this

Atri, P., Miller-Jones, J. C. A., Bahramian, A., Plotkin, R. M., Deller, A. T., Jonker, P. G., ... Tudose, V. (Accepted/In press). A radio parallax to the black hole X-ray binary MAXI J1820+070. Monthly Notices of the Royal Astronomical Society.

A radio parallax to the black hole X-ray binary MAXI J1820+070. / Atri, P.; Miller-Jones, J. C. A.; Bahramian, A.; Plotkin, R. M.; Deller, A. T.; Jonker, P. G.; Maccarone, T. J.; Sivakoff, G. R.; Soria, R.; Altamirano, D.; Belloni, T.; Fender, R.; Koerding, E.; Maitra, D.; Markoff, S.; Migliari, S.; Russell, D.; Russell, T.; Sarazin, C. L.; Tetarenko, A. J.; Tudose, V.

In: Monthly Notices of the Royal Astronomical Society, 01.01.2020.

Research output: Contribution to journalArticle

Atri, P, Miller-Jones, JCA, Bahramian, A, Plotkin, RM, Deller, AT, Jonker, PG, Maccarone, TJ, Sivakoff, GR, Soria, R, Altamirano, D, Belloni, T, Fender, R, Koerding, E, Maitra, D, Markoff, S, Migliari, S, Russell, D, Russell, T, Sarazin, CL, Tetarenko, AJ & Tudose, V 2020, 'A radio parallax to the black hole X-ray binary MAXI J1820+070', Monthly Notices of the Royal Astronomical Society.
Atri P, Miller-Jones JCA, Bahramian A, Plotkin RM, Deller AT, Jonker PG et al. A radio parallax to the black hole X-ray binary MAXI J1820+070. Monthly Notices of the Royal Astronomical Society. 2020 Jan 1.
Atri, P. ; Miller-Jones, J. C. A. ; Bahramian, A. ; Plotkin, R. M. ; Deller, A. T. ; Jonker, P. G. ; Maccarone, T. J. ; Sivakoff, G. R. ; Soria, R. ; Altamirano, D. ; Belloni, T. ; Fender, R. ; Koerding, E. ; Maitra, D. ; Markoff, S. ; Migliari, S. ; Russell, D. ; Russell, T. ; Sarazin, C. L. ; Tetarenko, A. J. ; Tudose, V. / A radio parallax to the black hole X-ray binary MAXI J1820+070. In: Monthly Notices of the Royal Astronomical Society. 2020.
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title = "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 $0.348\pm0.033$ mas for MAXI\,J1820+070 translates to a distance of $2.96\pm0.33$ kpc. This distance implies that the source reached $15\pm3\{\%}$ 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 $62\pm3^{\circ}$, $0.88\pm0.09c$ and $9.5\pm1.4 M_{\odot}$, respectively",
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author = "P. Atri and Miller-Jones, {J. C. A.} and A. Bahramian and Plotkin, {R. M.} and Deller, {A. T.} and Jonker, {P. G.} and Maccarone, {T. J.} and Sivakoff, {G. R.} and R. Soria and D. Altamirano and T. Belloni and R. Fender and E. Koerding and D. Maitra and S. Markoff and S. Migliari and D. Russell and T. Russell and Sarazin, {C. L.} and Tetarenko, {A. J.} and V. Tudose",
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T1 - A radio parallax to the black hole X-ray binary MAXI J1820+070

AU - Atri, P.

AU - Miller-Jones, J. C. A.

AU - Bahramian, A.

AU - Plotkin, R. M.

AU - Deller, A. T.

AU - Jonker, P. G.

AU - Maccarone, T. J.

AU - Sivakoff, G. R.

AU - Soria, R.

AU - Altamirano, D.

AU - Belloni, T.

AU - Fender, R.

AU - Koerding, E.

AU - Maitra, D.

AU - Markoff, S.

AU - Migliari, S.

AU - Russell, D.

AU - Russell, T.

AU - Sarazin, C. L.

AU - Tetarenko, A. J.

AU - Tudose, V.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - 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 $0.348\pm0.033$ mas for MAXI\,J1820+070 translates to a distance of $2.96\pm0.33$ kpc. This distance implies that the source reached $15\pm3\%$ 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 $62\pm3^{\circ}$, $0.88\pm0.09c$ and $9.5\pm1.4 M_{\odot}$, respectively

AB - 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 $0.348\pm0.033$ mas for MAXI\,J1820+070 translates to a distance of $2.96\pm0.33$ kpc. This distance implies that the source reached $15\pm3\%$ 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 $62\pm3^{\circ}$, $0.88\pm0.09c$ and $9.5\pm1.4 M_{\odot}$, respectively

KW - Astrophysics - High Energy Astrophysical Phenomena

M3 - Article

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

ER -