Black Hole spin dependence of general relativistic multi-transonic accretion close to the horizon

Bozena Czerny; Ishita Maity; Paramita Barai; Paul J. Wiita; Sankhasubhra Nag; Sourav Bhattacharya; Swathi Hegde; Tapan Naskar; Tapas K. Das; Vladimir Karas

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Black Hole spin dependence of general relativistic multi-transonic accretion close to the horizon

Tapas K. Das, Sankhasubhra Nag, Swathi Hegde, Sourav Bhattacharya, Ishita Maity, Bozena Czerny, Paramita Barai, Paul J. Wiita

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Vladimir Karas, Tapan Naskar

High Energy Astrophysical Phenomena · Submitted 29 Nov 2012

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Our formalism can be used to identify a new spectral signature of black hole spin, and has the potential of performing the black hole shadow imaging corresponding to the low angular momentum accretion flow.

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arXiv ID1211.6952 (version 2)

Pith IDI5WSVT3W, Pith's permanent record of this paper and its review

CitationBozena Czerny, Ishita Maity, Paramita Barai, Paul J. Wiita, Sankhasubhra Nag, Sourav Bhattacharya, Swathi Hegde, Tapan Naskar, Tapas K. Das, Vladimir Karas. "Black Hole spin dependence of general relativistic multi-transonic accretion close to the horizon." arXiv:1211.6952 (2012). https://pith.science/paper/I5WSVT3W

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What the abstract itself states, as probabilities: claims first 0.17 · states limitation 0.10 · human participants 0.01 · controlled comparison 0.06 · randomized assignment 0.01 · states quantitative result 0.04 · compares with prior results 0.06 · mentions code or data availability 0.02.

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arXiv listing abstract v2. Results and the main claim are underlined; show every role.

We introduce a novel formalism to investigate the role of the spin angular momentum of astrophysical black holes in influencing the behaviour of low angular momentum general relativistic accretion. We propose a metric independent analysis of axisymmetric general relativistic flow, and consequently formulate the space and time dependent equations describing the general relativistic hydrodynamic accretion flow in the Kerr metric. The associated stationary critical solutions for such flow equations are provided and the stability of the stationary transonic configuration is examined using an elegant linear perturbation technique. We examine the properties of infalling material for both prograde and retrograde accretion as a function of the Kerr parameter at extremely close proximity to the event horizon. Our formalism can be used to identify a new spectral signature of black hole spin, and has the potential of performing the black hole shadow imaging corresponding to the low angular momentum accretion flow.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We introduce a novel formalism to investigate the role of the spin angular momentum of astrophysical black holes in influencing the behaviour of low angular momentum general relativistic accretion.	contribution 1.00	0.91	0.08	asserted 0.79
s1	We propose a metric independent analysis of axisymmetric general relativistic flow, and consequently formulate the space and time dependent equations describing the general relativistic hydrodynamic accretion flow in the Kerr metric.	method 0.72	0.93	0.05	asserted 1.00
s2	The associated stationary critical solutions for such flow equations are provided and the stability of the stationary transonic configuration is examined using an elegant linear perturbation technique.	method 0.72	0.91	0.08	asserted 1.00
s3	We examine the properties of infalling material for both prograde and retrograde accretion as a function of the Kerr parameter at extremely close proximity to the event horizon.	contribution 0.77	0.87	0.14	asserted 0.94
s4	Our formalism can be used to identify a new spectral signature of black hole spin, and has the potential of performing the black hole shadow imaging corresponding to the low angular momentum accretion flow.	future work 0.43	0.53	0.35	hedged possibility 0.88

What kind of paper the classifier reports this is: method or tool 0.87 · evidence from proof or derivation 0.99.

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arXiv listing abstract v2

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full text
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T body sentences
C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

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Original abstract

We introduce a novel formalism to investigate the role of the spin angular momentum of astrophysical black holes in influencing the behaviour of low angular momentum general relativistic accretion. We propose a metric independent analysis of axisymmetric general relativistic flow, and consequently formulate the space and time dependent equations describing the general relativistic hydrodynamic accretion flow in the Kerr metric. The associated stationary critical solutions for such flow equations are provided and the stability of the stationary transonic configuration is examined using an elegant linear perturbation technique. We examine the properties of infalling material for both prograde and retrograde accretion as a function of the Kerr parameter at extremely close proximity to the event horizon. Our formalism can be used to identify a new spectral signature of black hole spin, and has the potential of performing the black hole shadow imaging corresponding to the low angular momentum accretion flow.

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Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

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Cites as background 1 paper

Sizable amount of work in this direction has been performed for high angular momentum flows and for ion tori (e.g. [ref] ).

Constraining the nature of the Galactic center black hole Sgr A* with present and future observations · Discussion · 0.95

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