Reconnection in marginally collisionless accretion disk coronae

J. Goodman, D. Uzdensky

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


We point out that a conventional construction placed on observations of accreting black holes, in which their nonthermal X-ray spectra are produced by inverse Comptonization in a coronal plasma, suggests that the plasma is marginally collisionless. Recent developments in plasma physics indicate that fast reconnection takes place only in collisionless plasmas. As has recently been suggested for the Sun's corona, such marginal states may result from a combination of energy balance and the requirements of fast magnetic reconnection.

Original languageEnglish (US)
Pages (from-to)555-558
Number of pages4
JournalAstrophysical Journal
Issue number1
StatePublished - Nov 20 2008

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Accretion, accretion disks
  • Galaxies: Active
  • Magnetic fields
  • X-rays: Binaries


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