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Scaringi S, Maccarone TJ, Körding E, et al. Accretion-induced variability links young stellar objects, white dwarfs, and black holes. Sci Adv. 2015;1(9):e1500686doi: 10.1126/sciadv.1500686.
Scaringi, S., Maccarone, T. J., Körding, E., Knigge, C., Vaughan, S., Marsh, T. R., Aranzana, E., Dhillon, V. S., & Barros, S. C. (2015). Accretion-induced variability links young stellar objects, white dwarfs, and black holes. Science advances, 1(9), e1500686. https://doi.org/10.1126/sciadv.1500686
Scaringi, Simone, et al. "Accretion-induced variability links young stellar objects, white dwarfs, and black holes." Science advances vol. 1,9 (2015): e1500686. doi: https://doi.org/10.1126/sciadv.1500686
Scaringi S, Maccarone TJ, Körding E, Knigge C, Vaughan S, Marsh TR, Aranzana E, Dhillon VS, Barros SC. Accretion-induced variability links young stellar objects, white dwarfs, and black holes. Sci Adv. 2015 Oct 09;1(9):e1500686. doi: 10.1126/sciadv.1500686. eCollection 2015 Oct. PMID: 26601307; PMCID: PMC4646821.
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Sci Adv. 2015 Oct 09;1(9):e1500686. doi: 10.1126/sciadv.1500686. eCollection 2015 Oct.

Accretion-induced variability links young stellar objects, white dwarfs, and black holes.

Science advances

Simone Scaringi, Thomas J Maccarone, Elmar Körding, Christian Knigge, Simon Vaughan, Thomas R Marsh, Ester Aranzana, Vikram S Dhillon, Susana C C Barros

Affiliations

  1. Max-Planck-Institut für Extraterrestriche Physik, D-85748 Garching, Germany.
  2. Department of Physics, Texas Tech University, Box 41051, Lubbock, TX 79409-1051, USA.
  3. Department of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud University Nijmegen, P. O. Box 9010, 6500 GL Nijmegen, Netherlands.
  4. School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
  5. Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK.
  6. Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
  7. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK. ; Instituto de Astrofisica de Canarias, E-38205, La Laguna, Tenerife, Spain.
  8. Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, Centro de Astrofísica da Universidade do Porto (CAUP), Rua das Estrelas, PT4150-762 Porto, Portugal.

PMID: 26601307 PMCID: PMC4646821 DOI: 10.1126/sciadv.1500686

Abstract

The central engines of disc-accreting stellar-mass black holes appear to be scaled down versions of the supermassive black holes that power active galactic nuclei. However, if the physics of accretion is universal, it should also be possible to extend this scaling to other types of accreting systems, irrespective of accretor mass, size, or type. We examine new observations, obtained with Kepler/K2 and ULTRACAM, regarding accreting white dwarfs and young stellar objects. Every object in the sample displays the same linear correlation between the brightness of the source and its amplitude of variability (rms-flux relation) and obeys the same quantitative scaling relation as stellar-mass black holes and active galactic nuclei. We also show that the most important parameter in this scaling relation is the physical size of the accreting object. This establishes the universality of accretion physics from proto-stars still in the star-forming process to the supermassive black holes at the centers of galaxies.

Keywords: accretion; black holes; timing; unification; variability; white dwarfs; young-stellar objects

References

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