Black hole accretion rate
Nuclear star formation activity and black hole accretion in nearby Seyfert galaxies
... formation rate (SFR) and the active galactic nuclei (AGN) luminosity (and, therefore, the black hole accretion rate, ˙ M BH ) of Seyfert ...
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Advection-dominated Accretion and Black Hole Event Horizons
... advection-dominated accretion flows (ADAFs) which represent a very different regime of accretion than the thin disk (Narayan & Yi 1994, 1995; Abramowicz et ...critical accretion rate, ˙ m < m ...
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Bulk Comptonization by turbulence in black hole accretion discs
... Because the decrease in gas temperature as well as other changes in the vertical structure may then affect bulk Comptonization, in theory the two should be calculated self-consistently. Another complicating factor is ...
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The most massive black holes on the Fundamental Plane of black hole accretion.
... Spectroscopic X-ray flux. The background cluster emission might be significantly undersubtracted by the photometric approach, es- pecially in clusters with strong central surface brightness peaks. To obtain a better ...
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A correlation between star formation rate and average black hole accretion in star-forming galaxies.
... Treister et al. 2009; Mullaney et al. 2012a). In summary, we studied the average BHAR for a sample of star-forming galaxies with SFR measurements without contam- ination from AGNs using Herschel. We used AGNs selected at ...
10
X-ray Studies of the Innermost Regions of Black Hole Accretion
... The tool EPPROC is used to create clean calibrated event lists. We filter the data for flaring particle background and the background-dominated intervals are defined as the intervals where the single event count ...
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Advection‐dominated Accretion Model of the Black Hole V404 Cygni in Quiescence
... the black hole, ...the rate at which new SXTs are being found), this prediction can be easily ...the black hole would be strong verification of the model since it is difficult to ...
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General relativistic radiation magnetohydrodynamics, with applications to black hole accretion disks
... For black hole accretion applications we expect this only for models in the high accretion rate regime, ˙ M & 10 −3 M ˙ Edd , although the precise condition will depend on details of ...
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Probing the inner regions of supermassive black hole accretion disks and jets
... dimensionless black hole ...the accretion disk is radiatively efficient, optically thick, and geometrically thin at radii greater than or equal to the ISCO ...modest accretion rate ...
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Advection‐dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
... Figure 4b shows the effect of varying β. Again, for each β, we have adjusted the accretion rate to fit the X-ray flux. In this case, we see quite substantial changes in the predicted spectrum. An increase ...
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General-relativistic magnetohydrodynamics simulations of black hole accretion disks: dynamics and radiative properties
... give accretion rate as an arbitrary parameter when performing radiative ...the accretion disk with respect to the black hole’s spin axis, is also a standard parameter to ...
127
Mass and spin co evolution during the alignment of a black hole in a warped accretion disc
... a black hole (BH) with a misaligned accretion disc to study BH spin precession and alignment jointly with BH mass M BH and spin parameter a evolution, under the assumption that the disc is ...
15
High Density Reflection Spectroscopy – II. The density of the inner black hole accretion disc in AGN
... mass accretion rate below which r > 20 is dominated by gas ...mass accretion rates of the 17 Seyfert 1 AGN in our sample and GX 339−4 are also shown in ...the accretion rate estimation, ...
22
Heroic: 3D general relativistic radiative post-processor with comptonization for black hole accretion discs
... and accretion flows in a black hole ...of accretion discs. One application is to a thin accretion disc around a black ...radiation-dominated accretion disc accreting at 11 ...
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A new way to measure supermassive black hole spin in accretion disc-dominated active galaxies.
... both black hole mass and mass accretion rate, so without a good mass estimate it is not possible to accurately determine the position of the peak disc emis- ...
10
Simulations of an accretion disk surrounding a supermassive black hole and its interaction with a nuclear star cluster
... R. Some averaging was necessary due to the oscillations, but this was manageable quite well. This mostly confirms the assumption made about this in Kennedy et al. (2016) and greatly showcases the gradual change (as ...
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An Accretion‐Jet Model for Black Hole Binaries: Interpreting the Spectral and Timing Features of XTE J1118+480
... Several other caveats also need to be mentioned. First, we adopt a pseudo-Newtonian potential rather than the exact general relativistic approach when we calculate the dynam- ics of the hot accretion flow. ...
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Binary Active Galactic Nuclei in Stripe 82: Constraints on Synchronized Black Hole Accretion in Major Mergers
... simultaneous accretion could be triggered by tidal ...firmation rate is quite high, especially when only considering the five grade-A candidates, four of which are ...
7
Strong constraints on a super-Eddington accretion flow : XMM–Newton observations of an intermediate-mass black hole.
... (2011). The majority of NLS1 show less optical variability than the broad-line Seyferts (e.g. Ai et al. 2013, but see Kelly et al. 2013). This is somewhat surprising in view of their higher X-ray variability (e.g. Ponti ...
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Advection‐Dominated Accretion and the Spectral States of Black Hole X‐Ray Binaries: Application to Nova Muscae 1991
... mass accretion rate and track the transition radius consistently, the model spectra we calculate naturally go through a sequence of states which resemble the quiescent state, low state, intermediate state ...
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