2001A&A...372..386L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST07:20:15

2001A&A...372..386L - Astronomy and Astrophysics, volume 372, 386-390 (2001/6-3)

Truncation of geometrically thin disks around massive black holes in galactic nuclei.

LIU B.F. and MEYER-HOFMEISTER E.

Abstract (from CDS):

The concept of an advection-dominated accretion flow (ADAF), with or without wind loss, was used to describe the spectra of the galactic center source SgrA*, low-luminosity AGN and nuclei of elliptical galaxies (including M 87). The spectral fits of various authors show that the transition from the geometrically thin disk to the hot flow occurs at quite different distances, apparently not uniquely related to the mass flow rate in the disk. We compare these results with the results of theoretical modeling where we determine the truncation of the thin outer disk from the efficiency of mass evaporation. The physics is the same as in the case of galactic black holes systems (Meyer et al., 2000A&A...361..175M). For the observationally indicated mass flow rates our model predicts a truncation at 103 to 104 Schwarzschild radii. We discuss whether far inside this truncation an innermost cool thin disk could exist and affect the spectrum.

Abstract Copyright:

Journal keyword(s): accretion disks - black hole physics - galaxies: nuclei - galaxies: individual: M 87, M 81 - X-rays: galaxies

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1448 1
2 NGC 1401 GiG 03 39 21.857 -22 43 28.98   13.32   11.95   ~ 43 0
3 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3962 5
4 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2113 3
5 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1958 2
6 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6207 3
7 M 58 SyG 12 37 43.597 +11 49 05.12 10.80 10.48 9.66     ~ 968 2
8 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 549 0
9 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1040 1
10 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1250 0
11 NGC 4696 BiC 12 48 49.277 -41 18 39.92   11.21   10.7   ~ 454 3
12 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 916 0
13 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2281 0
14 V* V404 Cyg HXB 20 24 03.820 +33 52 01.90 14.50 14.20 12.7     K0IV 1089 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-07:20:15

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