TY - JOUR
AU1 - Sob’yanin, Denis Nikolaevich
AB - Abstract New long-term Very Long Baseline Array observations of the well-known jet in the M87 radio galaxy at 43 GHz show that the jet experiences a sideways shift with an approximately 8–10 yr quasi-periodicity. Such jet wobbling can be indicative of a relativistic Lense-Thirring precession resulting from a tilted accretion disc. The wobbling period together with up-to-date kinematic data on jet rotation opens up the possibility for estimating angular momentum of the central supermassive black hole. In the case of a test-particle precession, the specific angular momentum is J/Mc = (2.7 ± 1.5) × 1014 cm, implying moderate dimensionless spin parameters a = 0.5 ± 0.3 and 0.31 ± 0.17 for controversial gas-dynamic and stellar-dynamic black hole masses. However, in the case of a solid-body-like precession, the spin parameter is much smaller for both masses, 0.15 ± 0.05. Rejecting this value on the basis of other independent spin estimations requires the existence of a magnetically arrested disc in M87. galaxies: individual: M87, galaxies: jets, black hole physics, accretion, accretion discs © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/about_us/legal/notices)
TI - Black hole spin from wobbling and rotation of the M87 jet and a sign of a magnetically arrested disc
JF - Monthly Notices of the Royal Astronomical Society: Letters
DO - 10.1093/mnrasl/sly097
DA - 2018-06-02
UR - https://www.deepdyve.com/lp/oxford-university-press/black-hole-spin-from-wobbling-and-rotation-of-the-m87-jet-and-a-sign-lSsoypxo4p
SP - 1
VL - Advance Article
IS - 
DP - DeepDyve