# 2001A&A...380..245N

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 Query : 2001A&A...380..245N

2001A&A...380..245N - Astronomy and Astrophysics, volume 380, 245-250 (2001/12-2)

Ejection of the inner accretion disk in GRS 1915+105: The magnetic rubber-band effect.

NANDI A., CHAKRABARTI S.K., VADAWALE S.V. and RAO A.R.

Abstract (from CDS):

We examine theoretically the behaviour of the inner accretion disk in GRS 1915+105 when soft X-ray dips are present in the X-ray light curve. We assume the presence of a radial shock in the accretion disk, as in some of the Two Component Advective Flow (TCAF) solutions. We discuss the behaviour of the flux tubes inside a TCAF (which we name Magnetized TCAF or MTCAF model for brevity) and compare various competing forces on the flux tubes. In this MTCAF model, we find that the magnetic tension is the strongest force in a hot plasma of temperature > 1010 K and as a result, magnetic flux tubes entering in this region collapse catastrophically, thereby occasionally evacuating the inner disk. We postulate that this magnetic rubber-band'' effect induced evacuated disk matter produces the blobby components of outflows and IR/radio jets. We derive the size of the post-shock region by equating the time scale of the Quasi-Periodic Oscillations to the infall time of accreting matter in the post-shock region and found the shock location to be ∼45-66rg. We calculate the transition radius rtr, where the Keplerian disk deviates into a sub-Keplerian flow, to be ∼320rg. Based on the derived X-ray spectral parameters, we calculate the mass of this region to be ∼1018g. We conclude that during the X-ray dips the matter in the post-shock region, which manifests itself as the thermal-Compton component in the X-ray spectrum, is ejected, along with some sub-Keplerian matter in the pre-shock region.

Journal keyword(s): accretion, accretion disks - black hole physics - stars: winds, outflows - stars: individual: GRS 1915+105 - X-rays: stars

Full paper

 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 - 2022
#notes
1 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2454 0

 Query : 2001A&A...380..245N

Basic data :
Granat 1915+105 -- High Mass X-ray Binary
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
X (Granat,PBC,...), IR (2MASS,WISEA,...), LXB (2013ApJS), HXB (2016ApJS), No* (NOVA), V* (V*), BH? (2001Natur), gam (INTEGRAL1)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
• ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
• (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
• [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
• quality : flag of quality
• E ≥ 10"
• D : 1-10" (and some old data)
• C : 0.1-1"
• B : 0.01-0.1" + 2MASS, Tyc
• A : VLBI, Hipparcos
• bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
19 15 11.55576 +10 56 44.9052 (Near-IR) [ 80 80 135 ] C
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
• ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
• (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
• [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
• quality : flag of quality
• E ≥ 10"
• D : 1-10" (and some old data)
• C : 0.1-1"
• B : 0.01-0.1" + 2MASS, Tyc
• A : VLBI, Hipparcos
• bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
19 12 49.97745 +10 51 26.8296 [ 80 80 135 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
• ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
• (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
• [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
• quality : flag of quality
• E ≥ 10"
• D : 1-10" (and some old data)
• C : 0.1-1"
• B : 0.01-0.1" + 2MASS, Tyc
• A : VLBI, Hipparcos
• bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
045.36578444 -00.21909884 [ 80 80 135 ]
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
• filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
• (System) : may be AB (default is Vega)
• flux-value : value of flux or magnitude
• [error] : error value
• quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
• MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
• bibcode : bibcode of the flux reference
Fluxes (2) :
 H 14.369 [0.058] C K 12.896 [0.062] C
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview
 All (CDSPortal) Send to within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR. The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding. Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

 The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature. Identifiers (13) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

 2MASS J19151155+1056449 NOVA Aql 1992 TIC 209140669 [KRL2007b] 360 Granat 1915+105 PBC J1915.1+1056 V* V1487 Aql Granat 1915+10 SWIFT J1915.3+1057 WISEA J191511.57+105645.2 INTEGRAL1 112 SWIFT J1915.1+1056 WISE J191511.54+105644.7

 References (2454 between 1850 and 2022) (Total 2454) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object
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Collections of Measurements

distance : 1

Observing logs

ISO : 29    XMM : 8

External archives :

Link by name to the catalogue in VizieR :

 2MASS J19151155+1056449 V* V1487 Aql WISEA J191511.57+105645.2 WISE J191511.54+105644.7

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2022.08.18-04:05:16