Pith. sign in

REVIEW 2 cited by

The importance of discovering a 3:2 twin-peak QPO in a ULX or how to solve the puzzle of intermediate mass black holes

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv astro-ph/0402012 v1 pith:LABMM335 submitted 2004-02-01 astro-ph

Marek A. Abramowicz , Wlodek Kluzniak , Jeffrey E. McClintock , Ronald A. Remillard This is my paper · ORCID
classification astro-ph
keywords blackholebeenexpectedgalacticmasstwin-peakconventional
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Recently, twin-peak QPOs have been observed in a 3:2 ratio for three Galactic black-hole microquasars with frequencies that have been shown to scale as 1/M, as expected for general relativisitic motion near a black hole. It may be possible to extend this result to distinguish between the following two disparate models that have been proposed for the puzzling ultraluminous X-ray sources (ULXs): (1) an intermediate-mass black hole M ~1000 solar mass) radiating very near the Eddington limit and (2) a conventional black hole (M ~ 10 solar mass) accreting at a highly super-Eddington rate with its emission beamed along the rotation axis. We suggest that it may be possible to distinguish between these models by detecting the counterpart of a Galactic twin-peak QPO in a ULX: the expected frequency for the intermediate-mass black hole model is only about 1 Hz, whereas, for the conventional black hole model the expected frequency would be the ~100 Hz value observed for the Galactic microquasars.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The macroscopic precession model of quasi-periodic oscillations for rotating compact objects

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Treating QPO-emitting disk clumps as spinning test bodies reproduces the observed twin kHz QPOs without the effective de Sitter term, with fits preferring n≈2 thin-disk structures for Schwarzschild and n≈1 for Kerr.

  2. A Possible Short-Timescale Optical Quasi-Periodic Oscillation in PKS\,0805$-$07 from High-Cadence TESS Observations

    astro-ph.HE 2026-03 conditional novelty 5.0 of 10

    A ~1.7-day transient quasi-periodic oscillation is claimed in the TESS optical light curve of the FSRQ PKS 0805-07, at ~99.99% LSP confidence.

Pith tools