SIMBAD references

2022MNRAS.511.1992L - Mon. Not. R. Astron. Soc., 511, 1992-1998 (2022/April-1)

AGN light echoes and the accretion disc self-gravity limit.

LOBBAN A. and KING A.

Abstract (from CDS):

Accretion disc theory predicts that an AGN disc becomes self-gravitating and breaks up into stars at an outer radius Rsg ≃ 12 light-days, with effectively no free parameter. We present evidence that the longest observed AGN light echoes are all close to 12 d in the AGN rest frames. These observations give a stringent test of the AGN disc theory. Further monitoring should offer insight into the formation angular momentum of the gas forming the disc. For distant AGN, observed lags significantly longer than 12 d give lower limits on their redshifts.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: active - black hole physics - X-rays: galaxies

Simbad objects: 37

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