NuSTAR AND SWIFT OBSERVATIONS OF THE VERY HIGH STATE IN GX 339-4: WEIGHING THE BLACK HOLE WITH X-RAYS

M. L. Parker, J. A. Tomsick, J. A. Kennea, J. M. Miller, F. A. Harrison, D. Barret, S. E. Boggs, F. E. Christensen, W. W. Craig, A. C. Fabian, F. Fürst, V. Grinberg, C. J. Hailey, P. Romano, D. Stern, D. J. Walton, W. W. Zhang

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Abstract

We present results from spectral fitting of the very high state of GX 339-4 with Nuclear Spectroscopic Telescope Array (NuSTAR) and Swift. We use relativistic reflection modeling to measure the spin of the black hole and inclination of the inner disk and find a spin of a = 0.95-0.08+0.02 and inclination of 30° ± 1° (statistical errors). These values agree well with previous results from reflection modeling. With the exceptional sensitivity of NuSTAR at the high-energy side of the disk spectrum, we are able to constrain multiple physical parameters simultaneously using continuum fitting. By using the constraints from reflection as input for the continuum fitting method, we invert the conventional fitting procedure to estimate the mass and distance of GX 339-4 using just the X-ray spectrum, finding a mass of 9.0-1.2+1.6 M and distance of 8.4 ± 0.9 kpc (statistical errors).

Original languageEnglish (US)
Article numberL6
JournalAstrophysical Journal Letters
Volume821
Issue number1
DOIs
StatePublished - Apr 10 2016

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spectroscopic telescopes
modeling
inclination
x rays
continuums
energy
sensitivity
estimates

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Parker, M. L. ; Tomsick, J. A. ; Kennea, J. A. ; Miller, J. M. ; Harrison, F. A. ; Barret, D. ; Boggs, S. E. ; Christensen, F. E. ; Craig, W. W. ; Fabian, A. C. ; Fürst, F. ; Grinberg, V. ; Hailey, C. J. ; Romano, P. ; Stern, D. ; Walton, D. J. ; Zhang, W. W. / NuSTAR AND SWIFT OBSERVATIONS OF THE VERY HIGH STATE IN GX 339-4 : WEIGHING THE BLACK HOLE WITH X-RAYS. In: Astrophysical Journal Letters. 2016 ; Vol. 821, No. 1.
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abstract = "We present results from spectral fitting of the very high state of GX 339-4 with Nuclear Spectroscopic Telescope Array (NuSTAR) and Swift. We use relativistic reflection modeling to measure the spin of the black hole and inclination of the inner disk and find a spin of a = 0.95-0.08+0.02 and inclination of 30° ± 1° (statistical errors). These values agree well with previous results from reflection modeling. With the exceptional sensitivity of NuSTAR at the high-energy side of the disk spectrum, we are able to constrain multiple physical parameters simultaneously using continuum fitting. By using the constraints from reflection as input for the continuum fitting method, we invert the conventional fitting procedure to estimate the mass and distance of GX 339-4 using just the X-ray spectrum, finding a mass of 9.0-1.2+1.6 M⊙ and distance of 8.4 ± 0.9 kpc (statistical errors).",
author = "Parker, {M. L.} and Tomsick, {J. A.} and Kennea, {J. A.} and Miller, {J. M.} and Harrison, {F. A.} and D. Barret and Boggs, {S. E.} and Christensen, {F. E.} and Craig, {W. W.} and Fabian, {A. C.} and F. F{\"u}rst and V. Grinberg and Hailey, {C. J.} and P. Romano and D. Stern and Walton, {D. J.} and Zhang, {W. W.}",
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Parker, ML, Tomsick, JA, Kennea, JA, Miller, JM, Harrison, FA, Barret, D, Boggs, SE, Christensen, FE, Craig, WW, Fabian, AC, Fürst, F, Grinberg, V, Hailey, CJ, Romano, P, Stern, D, Walton, DJ & Zhang, WW 2016, 'NuSTAR AND SWIFT OBSERVATIONS OF THE VERY HIGH STATE IN GX 339-4: WEIGHING THE BLACK HOLE WITH X-RAYS', Astrophysical Journal Letters, vol. 821, no. 1, L6. https://doi.org/10.3847/2041-8205/821/1/L6

NuSTAR AND SWIFT OBSERVATIONS OF THE VERY HIGH STATE IN GX 339-4 : WEIGHING THE BLACK HOLE WITH X-RAYS. / Parker, M. L.; Tomsick, J. A.; Kennea, J. A.; Miller, J. M.; Harrison, F. A.; Barret, D.; Boggs, S. E.; Christensen, F. E.; Craig, W. W.; Fabian, A. C.; Fürst, F.; Grinberg, V.; Hailey, C. J.; Romano, P.; Stern, D.; Walton, D. J.; Zhang, W. W.

In: Astrophysical Journal Letters, Vol. 821, No. 1, L6, 10.04.2016.

Research output: Contribution to journalArticle

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T1 - NuSTAR AND SWIFT OBSERVATIONS OF THE VERY HIGH STATE IN GX 339-4

T2 - WEIGHING THE BLACK HOLE WITH X-RAYS

AU - Parker, M. L.

AU - Tomsick, J. A.

AU - Kennea, J. A.

AU - Miller, J. M.

AU - Harrison, F. A.

AU - Barret, D.

AU - Boggs, S. E.

AU - Christensen, F. E.

AU - Craig, W. W.

AU - Fabian, A. C.

AU - Fürst, F.

AU - Grinberg, V.

AU - Hailey, C. J.

AU - Romano, P.

AU - Stern, D.

AU - Walton, D. J.

AU - Zhang, W. W.

PY - 2016/4/10

Y1 - 2016/4/10

N2 - We present results from spectral fitting of the very high state of GX 339-4 with Nuclear Spectroscopic Telescope Array (NuSTAR) and Swift. We use relativistic reflection modeling to measure the spin of the black hole and inclination of the inner disk and find a spin of a = 0.95-0.08+0.02 and inclination of 30° ± 1° (statistical errors). These values agree well with previous results from reflection modeling. With the exceptional sensitivity of NuSTAR at the high-energy side of the disk spectrum, we are able to constrain multiple physical parameters simultaneously using continuum fitting. By using the constraints from reflection as input for the continuum fitting method, we invert the conventional fitting procedure to estimate the mass and distance of GX 339-4 using just the X-ray spectrum, finding a mass of 9.0-1.2+1.6 M⊙ and distance of 8.4 ± 0.9 kpc (statistical errors).

AB - We present results from spectral fitting of the very high state of GX 339-4 with Nuclear Spectroscopic Telescope Array (NuSTAR) and Swift. We use relativistic reflection modeling to measure the spin of the black hole and inclination of the inner disk and find a spin of a = 0.95-0.08+0.02 and inclination of 30° ± 1° (statistical errors). These values agree well with previous results from reflection modeling. With the exceptional sensitivity of NuSTAR at the high-energy side of the disk spectrum, we are able to constrain multiple physical parameters simultaneously using continuum fitting. By using the constraints from reflection as input for the continuum fitting method, we invert the conventional fitting procedure to estimate the mass and distance of GX 339-4 using just the X-ray spectrum, finding a mass of 9.0-1.2+1.6 M⊙ and distance of 8.4 ± 0.9 kpc (statistical errors).

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