2006A&A...454L...9L

Query : 2006A&A...454L...9L

2006A&A...454L...9L - Astronomy and Astrophysics, volume 454L9-12 (2006/7-4)

An inner disk below the ADAF: the intermediate spectral state of black hole accretion.

LIU B.F., MEYER F. and MEYER-HOFMEISTER E.

Abstract (from CDS):

The hard and soft spectral states of black hole accretion are understood as connected with ADAF accretion (truncated disk) and standard disk accretion, respectively. However, observations indicate the existence of cool gas in the inner region at times when the disk is already truncated outside. We try to shed light on these not yet understood intermediate states. The disk-corona model allows to understand the spectral state transitions as caused by changes of the mass flow rate in the disk and provides a picture for the accretion geometry when disk truncation starts at the time of the soft/hard transition, the formation of a gap in the disk filled by an advection-dominated flow (ADAF) at the distance where the evaporation is maximal. We study the interaction of such an ADAF with an inner thin disk below. We show that, when the accretion rate is not far below the transition rate, an inner disk could exist below an ADAF, leading to an intermediate state of black hole accretion.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - black hole physics - X-rays: binaries

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* KV UMa HXB 11 18 10.7930420496 +48 02 12.314730120           K5V-M1V 865 0

Query : 2006A&A...454L...9L

Basic data :
V* KV UMa -- High Mass X-ray Binary
Other object types: otypes_help 		X (PBC,XSS,...), V* (V*,AAVSO), * (USNO,Gaia), HXB (2016ApJS), LXB (2012ApJ), CV* (2011ARep), gam (INTREF), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		11 18 10.7930420496 +48 02 12.314730120 (Optical) [ 0.1370 0.1791 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 15 23.1404139105 +48 18 36.876421810 [ 0.1370 0.1791 90 ]
Gal coord. (ep=J2000) : 		157.6609957508748 +62.3204963600568 [ 0.1370 0.1791 90 ]
Proper motions mas/yr : 		-18.105 -6.687 [0.155 0.217 90] A 2020yCat.1350....0G
Parallaxes (mas): 		0.1605 [0.2653] A 2020yCat.1350....0G
Spectral type: 		K5V-M1V C 2008NewAR..51..860Y
Fluxes (9) :
G 19.314075 [0.005163] C 2020yCat.1350....0G
J 12.760 [0.023] C 2003yCat.2246....0C
H 12.444 [0.030] C 2003yCat.2246....0C
K 12.084 [0.020] C 2003yCat.2246....0C
u (AB) 20.949 [0.065] C 2020ApJS..249....3A
g (AB) 20.000 [0.016] C 2020ApJS..249....3A
r (AB) 19.235 [0.012] C 2020ApJS..249....3A
i (AB) 18.993 [0.013] C 2020ApJS..249....3A
z (AB) 18.756 [0.035] C 2020ApJS..249....3A
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Identifiers (14) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

2MASS J11181079+4802126 TIC 297983610 XSS J11178+4758 Gaia DR3 789430249033567744
INTREF 446 USNO-A1.0 1350-08089912 XTE J1118+480 Gaia DR2 789430244729073664
PBC J1117.9+4803 USNO-A2.0 1350-07924726 EQ J111810.7+480214
SDSS J111810.78+480212.2 V* KV UMa AAVSO 1112+48

References (865 between 1850 and 2026) (Total 865)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Var : 1    Plx : 2    PM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* KV UMa

Link by name to the catalogue in VizieR :

2MASS J11181079+4802126 SDSS J111810.78+480212.2 USNO-A1.0 1350-08089912 USNO-A2.0 1350-07924726 V* KV UMa
Gaia DR3 789430249033567744 Gaia DR2 789430244729073664

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