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Description
  • We discuss accretion of clouds in the context of enhanced activity of Sagittarius A* during the past few hundred years. We put forward a scenario according to which gas clouds bring material close to the horizon of the black hole on <0.1 parsec scale. A solution is obtained under two additional assumptions: (i) the radiative efficiency is a decreasing function of the Eddington ratio; (ii) the viscous decay of the luminosity proceeds somewhat faster than the canonical L(t) t5/3 profile. We applied our scheme to the case of G2 cloud in the Galactic centre to obtain constraints on the core-less gaseous cloud model.
  • We discuss accretion of clouds in the context of enhanced activity of Sagittarius A* during the past few hundred years. We put forward a scenario according to which gas clouds bring material close to the horizon of the black hole on <0.1 parsec scale. A solution is obtained under two additional assumptions: (i) the radiative efficiency is a decreasing function of the Eddington ratio; (ii) the viscous decay of the luminosity proceeds somewhat faster than the canonical L(t) t5/3 profile. We applied our scheme to the case of G2 cloud in the Galactic centre to obtain constraints on the core-less gaseous cloud model. (en)
Title
  • Multiple accretion events as a trigger for Sagittarius A* activity
  • Multiple accretion events as a trigger for Sagittarius A* activity (en)
skos:prefLabel
  • Multiple accretion events as a trigger for Sagittarius A* activity
  • Multiple accretion events as a trigger for Sagittarius A* activity (en)
skos:notation
  • RIV/67985815:_____/13:00393919!RIV14-GA0-67985815
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GC13-00070J)
http://linked.open...iv/cisloPeriodika
  • July
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 90130
http://linked.open...ai/riv/idVysledku
  • RIV/67985815:_____/13:00393919
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • accretion; galaxy center; black holes (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [16CB9841D753]
http://linked.open...i/riv/nazevZdroje
  • Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 555
http://linked.open...iv/tvurceVysledku
  • Karas, Vladimír
  • Kunneriath, Devaky
  • Czerny, B.
  • Das, T. K.
http://linked.open...ain/vavai/riv/wos
  • 000322008600097
issn
  • 0004-6361
number of pages
http://bibframe.org/vocab/doi
  • 10.1051/0004-6361/201118124
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