A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES

K. I.I. Koljonen, Dave Russell, J. A. Fernández-Ontiveros, Sera Markoff, T. D. Russell, J. C.A. Miller-Jones, A. J. Van Der Horst, F. Bernardini, P. Casella, P. A. Curran, P. Gandhi, R. Soria

Research output: Contribution to journalArticle

Abstract

Accreting black holes are responsible for producing the fastest, most powerful outflows of matter in the universe. The formation process of powerful jets close to black holes is poorly understood, and the conditions leading to jet formation are currently hotly debated. In this paper, we report an unambiguous empirical correlation between the properties of the plasma close to the black hole and the particle acceleration properties within jets launched from the central regions of accreting stellar-mass and supermassive black holes. In these sources the emission of the plasma near the black hole is characterized by a power law at X-ray energies during times when the jets are produced. We find that the photon index of this power law, which gives information on the underlying particle distribution, correlates with the characteristic break frequency in the jet spectrum, which is dependent on magnetohydrodynamical processes in the outflow. The observed range in break frequencies varies by five orders of magnitude in sources that span nine orders of magnitude in black hole mass, revealing a similarity of jet properties over a large range of black hole masses powering these jets. This correlation demonstrates that the internal properties of the jet rely most critically on the conditions of the plasma close to the black hole, rather than other parameters such as the black hole mass or spin, and will provide a benchmark that should be reproduced by the jet formation models.

Original languageEnglish (US)
Article number139
JournalAstrophysical Journal
Volume814
Issue number2
DOIs
StatePublished - Dec 1 2015

Fingerprint

event horizon
plasma
power law
outflow
particle acceleration
stellar mass
universe
photons

Keywords

  • accretion, accretion disks
  • black hole physics
  • galaxies: jets
  • galaxies: nuclei
  • ISM: jets and outflows
  • X-rays: binaries

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Koljonen, K. I. I., Russell, D., Fernández-Ontiveros, J. A., Markoff, S., Russell, T. D., Miller-Jones, J. C. A., ... Soria, R. (2015). A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES. Astrophysical Journal, 814(2), [139]. https://doi.org/10.1088/0004-637X/814/2/139

A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES. / Koljonen, K. I.I.; Russell, Dave; Fernández-Ontiveros, J. A.; Markoff, Sera; Russell, T. D.; Miller-Jones, J. C.A.; Van Der Horst, A. J.; Bernardini, F.; Casella, P.; Curran, P. A.; Gandhi, P.; Soria, R.

In: Astrophysical Journal, Vol. 814, No. 2, 139, 01.12.2015.

Research output: Contribution to journalArticle

Koljonen, KII, Russell, D, Fernández-Ontiveros, JA, Markoff, S, Russell, TD, Miller-Jones, JCA, Van Der Horst, AJ, Bernardini, F, Casella, P, Curran, PA, Gandhi, P & Soria, R 2015, 'A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES', Astrophysical Journal, vol. 814, no. 2, 139. https://doi.org/10.1088/0004-637X/814/2/139
Koljonen KII, Russell D, Fernández-Ontiveros JA, Markoff S, Russell TD, Miller-Jones JCA et al. A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES. Astrophysical Journal. 2015 Dec 1;814(2). 139. https://doi.org/10.1088/0004-637X/814/2/139
Koljonen, K. I.I. ; Russell, Dave ; Fernández-Ontiveros, J. A. ; Markoff, Sera ; Russell, T. D. ; Miller-Jones, J. C.A. ; Van Der Horst, A. J. ; Bernardini, F. ; Casella, P. ; Curran, P. A. ; Gandhi, P. ; Soria, R. / A CONNECTION between PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS and OUTFLOW PROPERTIES. In: Astrophysical Journal. 2015 ; Vol. 814, No. 2.
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