Accretion Rates onto Massive Black Holes in Four Quiescent Elliptical Galaxies

2000 ◽  
Vol 533 (2) ◽  
pp. L111-L114 ◽  
Author(s):  
J. M. Wrobel ◽  
J. R. Herrnstein
Keyword(s):  
Black Holes ◽  
Elliptical Galaxies ◽  
Massive Black Holes ◽  
Accretion Rates

scholarly journals Gaseous Disks in the Nuclei of Elliptical Galaxies

1997 ◽  
Vol 163 ◽  
pp. 620-625 ◽  
Author(s):  
H. Ford ◽  
Z. Tsvetanov ◽  
L. Ferrarese ◽  
G. Kriss ◽  
W. Jaffe ◽  
...  
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Angular Momentum ◽  
Accretion Disks ◽  
Large Scale ◽  
Elliptical Galaxies ◽  
Central Mass ◽  
Massive Black Holes ◽  
Radio Jets

AbstractHST images have led to the discovery that small (r ~ 1″ r ~ 100 – 200 pc), well-defined, gaseous disks are common in the nuclei of elliptical galaxies. Measurements of rotational velocities in the disks provide a means to measure the central mass and search for massive black holes in the parent galaxies. The minor axes of these disks are closely aligned with the directions of the large–scale radio jets, suggesting that it is angular momentum of the disk rather than that of the black hole that determines the direction of the radio jets. Because the disks are directly observable, we can study the disks themselves, and investigate important questions which cannot be directly addressed with observations of the smaller and unresolved central accretion disks. In this paper we summarize what has been learned to date in this rapidly unfolding new field.

scholarly journals JD8 - Hot Interstellar Matter in Elliptical Galaxies

2009 ◽  
Vol 5 (H15) ◽  
pp. 269-270
Author(s):  
Dong-Woo Kim ◽  
Silvia Pellegrini
Keyword(s):  
Black Holes ◽  
Star Formation ◽  
Analytical Modeling ◽  
Elliptical Galaxies ◽  
Theoretical Studies ◽  
Interstellar Matter ◽  
Significant Progress ◽  
Massive Black Holes ◽  
X Ray ◽  
Formation And Evolution

The physical properties of the hot interstellar matter in elliptical galaxies are directly related with the formation and evolution of elliptical galaxies via star formation episodes, environmental effects such as stripping, infall, and mergers, and growth of super-massive black holes. The recent successful Chandra and XMM-Newton X-ray space missions have provided a large amount of high spatial/spectral resolution observational data on the hot ISM in elliptical galaxies. At the same time, theoretical studies with numerical simulations and analytical modeling of the dynamical and chemical evolution of elliptical galaxies have made a significant progress and start to predict various observable quantities.

scholarly journals Limits on the Accretion Rates onto Massive Black Holes in Nearby Galaxies

2001 ◽  
Vol 547 (2) ◽  
pp. 731-739 ◽  
Author(s):  
T. Di Matteo ◽  
C. L. Carilli ◽  
A. C. Fabian
Keyword(s):  
Black Holes ◽  
Massive Black Holes ◽  
Accretion Rates ◽  
Nearby Galaxies

Do massive black holes reside in elliptical galaxies?

Nature ◽  
1988 ◽  
Vol 333 (6176) ◽  
pp. 829-831 ◽  
Author(s):  
A. C. Fabian ◽  
C. R. Canizares
Keyword(s):  
Black Holes ◽  
Elliptical Galaxies ◽  
Massive Black Holes

scholarly journals Relativistic Fe Kα line and ensemble spins of black holes in narrow-line Seyfert 1 galaxies

2014 ◽  
Vol 10 (S312) ◽  
pp. 39-42
Author(s):  
Weimin Yuan ◽  
Zhu Liu ◽  
Youjun Lu ◽  
Xin-Lin Zhou
Keyword(s):  
Black Holes ◽  
Seyfert Galaxies ◽  
Emission Feature ◽  
Narrow Line ◽  
Massive Black Holes ◽  
X Ray ◽  
Accretion Rates ◽  
Black Hole Growth ◽  
Average Spin ◽  
Hole Growth

AbstractWhile a broad line of the Fe Kα emission is commonly found in the X-ray spectra of typical Seyfert galaxies, the situation is unclear in the case of Narrow Line Seyfert 1 galaxies (NLS1s)—an extreme subset which are generally thought to harbor less massive black holes with higher accretion rates. We report results of our study of the assemble property of the Fe K line in NLS1s by stacking the X-ray spectra of a large sample of 51 NLS1s observed with XMM-Newton. We find in the stacked X-ray spectra a prominent, broad emission feature over 4–7 keV, which is characteristic of the broad Fe Kα line. Our results suggest that a relativistic broad Fe line may in fact be common in NLS1s. The line profile is used to study the average spin of the black holes in the sample. We find, for the first time, that their black holes are constrained to be likely spinning at averagely low or moderate rates as a population. The implications of the results are discussed in the context of the black hole growth in NLS1 galaxies.

Models for galaxy and massive black hole formation and early evolution

2020 ◽  
Vol 15 (S359) ◽  
pp. 11-16
Author(s):  
Rainer Weinberger
Keyword(s):  
Black Holes ◽  
Galaxy Formation ◽  
Luminosity Function ◽  
Accretion Rate ◽  
High Redshift ◽  
Massive Black Hole ◽  
Massive Black Holes ◽  
Complex Processes ◽  
Accretion Rates ◽  
Eddington Limit

AbstractModels for massive black holes are a key ingredient for modern cosmological simulations of galaxy formation. The necessity of efficient AGN feedback in these simulations makes it essential to model the formation, growth and evolution of massive black holes, and parameterize these complex processes in a simplified fashion. While the exact formation mechanism is secondary for most galaxy formation purposes, accretion modeling turns out to be crucial. It can be informed by the properties of the high redshift quasars, accreting close to their Eddington limit, by the quasar luminosity function at peak activity and by low-redshift scaling relations. The need for halo-wide feedback implies a feedback-induced reduction of the accretion rate towards low redshift, amplifying the cosmological trend towards lower accretion rates at low redshift.

scholarly journals Central Black Holes and Dark Halos in Elliptical Galaxies

1995 ◽  
Vol 164 ◽  
pp. 215-225
Author(s):  
P.T. De Zeeuw
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Recent Work ◽  
Stellar Populations ◽  
Elliptical Galaxies ◽  
Massive Black Holes ◽  
Area Of Interest

Studies of the mass–to–light ratio M/L as a function of radius in a galaxy usually focus on: a) the existence of dark matter in and around galaxies, and b) the presence of massive black holes in their nuclei. Here we concentrate on elliptical galaxies, and summarize some recent work in both areas. We refer to more extensive reviews for earlier developments (Schwarzschild, 1954; Trimble, 1987; Ashman, 1992; Kormendy, 1993). A third area of interest is the behavior of the stellar populations as a function of radius, and its effect on M/L (e.g., Peletier, 1989). We will not discuss this here.

scholarly journals Relics of Nuclear Activity: Do All Galaxies Have Massive Black Holes?

1999 ◽  
Vol 186 ◽  
pp. 333-340
Author(s):  
Roeland P. van der Marel
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Growth Models ◽  
Elliptical Galaxies ◽  
Large Scatter ◽  
Nuclear Activity ◽  
Massive Black Holes ◽  
The Core ◽  
Kinematic Studies ◽  
Kinematical Data

The distribution of black hole (BH) masses M• in galaxies is constrained by photometric and kinematic studies of individual galaxies, and by the properties of the quasar population. I review our understanding of these topics, present new results of adiabatic BH growth models for HST photometry of elliptical galaxies with brightness profiles of the ‘core’ type, and discuss the implications of ground-based stellar kinematical data. It is not yet possible to uniquely determine the BH mass distribution, but the available evidence is not inconsistent with a picture in which: (i) a majority of galaxies has BHs; (ii) there is a correlation (with large scatter) between M• and spheroid luminosity Lsph of the form M• ≈ 10−2Lsph (solar B-band units); and (iii) the BHs formed in a quasar phase through mass accretion with efficiency ε ≈ 0.05.

scholarly journals The Masses of Nuclear Black Holes in Luminous Elliptical Galaxies and Implications for the Space Density of the Most Massive Black Holes

2007 ◽  
Vol 662 (2) ◽  
pp. 808-834 ◽  
Author(s):  
Tod R. Lauer ◽  
S. M. Faber ◽  
Douglas Richstone ◽  
Karl Gebhardt ◽  
Scott Tremaine ◽  
...  
Keyword(s):  
Black Holes ◽  
Elliptical Galaxies ◽  
Space Density ◽  
Massive Black Holes ◽  
The Masses
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