Confronting models for the high-frequency QPOs with Lense–Thirring precession

Stefanov, Ivan Zh.

doi:10.1093/mnras/stu1602

Cited by 10 publications

(8 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…I. The limits on the values of the mass and the spin of the black hole using the spectral continuum fitting, which is independent of the QPO methods and does not include the effect of external large-scale magnetic fields, can be found in [34,36,37]. In the following subsection, we discuss the general constraint methods of black hole parameters from QPOs and the possible influence of external magnetic fields on the predictions of the rotation and mass parameters of black holes.…”

Section: Qpo Models and Influence Of Magnetic Fieldsmentioning

confidence: 99%

Possible signature of the magnetic fields related to quasi-periodic oscillations observed in microquasars

2017

View full text Add to dashboard Cite

The study of quasi-periodic oscillations (QPOs) of X-ray flux observed in the stellar-mass black hole binaries can provide a powerful tool for testing of the phenomena occurring in the strong gravity regime. Magnetized versions of the standard geodesic models of QPOs can explain the observationally fixed data from the three microquasars. We perform a successful fitting of the HF QPOs observed for three microquasars, GRS 1915+105, XTE 1550-564 and GRO 1655-40, containing black holes, for magnetized versions of both epicyclic resonance and relativistic precession models and discuss the corresponding constraints of parameters of the model, which are the mass and spin of the black hole and the parameter related to the external magnetic field. The estimated magnetic field intensity strongly depends on the type of objects giving the observed HF QPOs. It can be as small as 10 −5 G if electron oscillatory motion is relevant, but it can be by many orders higher for protons or ions (0.02-1 G), or even higher for charged dust or such exotic objects as lighting balls, etc. On the other hand, if we know by any means the magnetic field intensity, our model implies strong limit on the character of the oscillating matter, namely its specific charge.

show abstract

Section: Qpo Models and Influence Of Magnetic Fieldsmentioning

confidence: 99%

Possible signature of the magnetic fields related to quasi-periodic oscillations observed in microquasars

2017

View full text Add to dashboard Cite

show abstract

“…Remillard et al 1999a,b;Belloni et al 2002;Belloni & Motta 2016), thought to be caused by motion of matter in the innermost region of the accretion disk (e.g. Stefanov 2014).…”

Section: Introductionmentioning

confidence: 99%

An atlas of exotic variability in IGR J17091−3624: a comparison with GRS 1915+105

Court

Altamirano

Pereyra

et al. 2017

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

We performed an analysis of all RXTE observations of the Low Mass X-ray Binary and Black Hole Candidate IGR J17091-3624 during the 2011-2013 outburst of the source. By creating lightcurves, hardness-intensity diagrams and power density spectra of each observation, we have created a set of 9 variability 'classes' that phenomenologically describe the range of types of variability seen in this object. We compare our set of variability classes to those established by Belloni et al. (2000) to describe the similar behaviour of the LMXB GRS 1915+105, finding that some types of variability seen in IGR J17091-3624 are not represented in data of GRS 1915+105. We also use all available X-ray data of the 2011-2013 outburst of IGR J17091-3624 to analyse its longterm evolution, presenting the first detection of IGR J17091-3624 above 150 keV as well as noting the presence of 're-flares' during the latter stages of the outburst. Using our results we place new constraints on the mass and distance of the object, and find that it accretes at 33% of its Eddington limit. As such, we conclude that Eddingtonlimited accretion can no longer be considered a sufficient or necessary criterion for GRS 1915+105-like variability to occur in Low Mass X-Ray Binaries.

show abstract

“…Different models of the twin HF QPOs were related to data observed in some other microquasars, giving restrictions on the black hole mass and spin of XTE J1550-564 (Motta et al 2014b), or GRS 1915+105 ). 1 The models of twin HF QPOs can also give interesting restrictions on parameters of neutron stars (Miller et al 1998;Zhang et al 2006;Belloni et al 2007;Mukhopadhyay 2009;Török et al 2010;Lin et al 2011;Török et al 2012;Montero & Zanotti 2012;Pappas 2012;Boshkayev et al 2014;Stefanov 2014;Stuchlik et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Models of quasi-periodic oscillations related to mass and spin of the GRO J1655-40 black hole

Stuchlík

Kološ

2016

A&A

View full text Add to dashboard Cite

Frequencies of the three quasi-periodic oscillation (QPO) modes observed simultaneously in the accreting black hole GRO J1655-40 are compared with the predictions of models. Models in which all three QPO signals are produced at the same radius are considered: these include different versions of relativistic precession, epicyclic resonance, tidal disruption, and warped disc models. Models that were originally proposed to interpret only the twin high-frequency QPOs are generalized here to interpret also the low-frequency QPO in terms of relativistic nodal precession. Inferred values of the black hole mass and spin from each QPO model are compared with the mass measured from optical observations and the spin inferred from X-ray spectroscopy techniques. We find that along with the relativistic precession model predicting M = (5.3 ± 0.1) M , a = 0.286 ± 0.004, the so-called total precession model (M = (5.5 ± 0.1) M , a = 0.276 ± 0.003), and the resonance epicyclic model with beat frequency (M = (5.1 ± 0.1) M , a = 0.274 ± 0.003) also satisfy the optical mass test.

show abstract

Confronting models for the high-frequency QPOs with Lense–Thirring precession

Cited by 10 publications

References 54 publications

Possible signature of the magnetic fields related to quasi-periodic oscillations observed in microquasars

Possible signature of the magnetic fields related to quasi-periodic oscillations observed in microquasars

An atlas of exotic variability in IGR J17091−3624: a comparison with GRS 1915+105

Models of quasi-periodic oscillations related to mass and spin of the GRO J1655-40 black hole

Contact Info

Product

Resources

About