Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339-4

F. M. Vincentelli, P. Casella, P. Petrucci, T. MacCarone, D. M. Russell, P. Uttley, B. De Marco, R. Fender, P. Gandhi, J. Malzac, K. O'Brien, J. A. Tomsick

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

We present results from the first multi-epoch X-ray/IR fast-photometry campaign on the black hole transient GX 339-4, during its 2015 outburst decay. We studied the evolution of the power spectral densities finding strong differences between the two bands. The X-ray power spectral density follows standard patterns of evolution, plausibly reflecting changes in the accretion flow. The IR power spectral density instead evolves very slowly, with a high-frequency break consistent with remaining constant at 0.63 ± 0.03 Hz throughout the campaign. We discuss this result in the context of the currently available models for the IR emission in black hole transients. While all models will need to be tested quantitatively against this unexpected constraint, we show that an IR-emitting relativistic jet that filters out the short-timescale fluctuations injected from the accretion inflow appears as the most plausible scenario.

Original languageEnglish
Article numberL19
JournalAstrophysical Journal Letters
Volume887
Issue number1
DOIs
StatePublished - Dec 10 2019

Fingerprint Dive into the research topics of 'Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339-4'. Together they form a unique fingerprint.

  • Cite this

    Vincentelli, F. M., Casella, P., Petrucci, P., MacCarone, T., Russell, D. M., Uttley, P., Marco, B. D., Fender, R., Gandhi, P., Malzac, J., O'Brien, K., & Tomsick, J. A. (2019). Physical Constraints from Near-infrared Fast Photometry of the Black Hole Transient GX 339-4. Astrophysical Journal Letters, 887(1), [L19]. https://doi.org/10.3847/2041-8213/ab5860