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Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling

Vincentelli, FM; Casella, P; Russell, DM; Baglio, MC; Veledina, A; Maccarone, T; Malzac, J; Fender, R; O’Brien, K; Uttley, P

Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling Thumbnail


Authors

FM Vincentelli

P Casella

DM Russell

MC Baglio

A Veledina

T Maccarone

J Malzac

R Fender

P Uttley



Abstract

We present the results regarding the analysis of the fast X-ray/infrared (IR) variability of the black hole transient MAXI J1535−571. The data studied in this work consist of two strictly simultaneous observations performed with XMM–Newton (X-rays: 0.7–10 keV), VLT/HAWK-I (Ks band, 2.2 μm) and VLT/VISIR (M and PAH2_2 bands, 4.85 and 11.88 μm, respectively). The cross-correlation function between the X-ray and near-IR light curves shows a strong asymmetric anticorrelation dip at positive lags. We detect a near-IR QPO (2.5σ) at 2.07 ± 0.09 Hz simultaneously with an X-ray QPO at approximately the same frequency (f0 = 2.25 ± 0.05). From the cross-spectral analysis, a lag consistent with zero was measured between the two oscillations. We also measure a significant correlation between the average near-IR and mid-IR fluxes during the second night, but find no correlation on short time-scales. We discuss these results in terms of the two main scenarios for fast IR variability (hot inflow and jet powered by internal shocks). In both cases, our preliminary modelling suggests the presence of a misalignment between the disc and jet.

Citation

Vincentelli, F., Casella, P., Russell, D., Baglio, M., Veledina, A., Maccarone, T., …Uttley, P. (2021). Fast infrared variability from the black hole candidate MAXI J1535−571 and tight constraints on the modelling. Monthly Notices of the Royal Astronomical Society, 503(1), 614-624. https://doi.org/10.1093/mnras/stab475

Journal Article Type Article
Acceptance Date Feb 11, 2021
Online Publication Date Feb 19, 2021
Publication Date 2021-05
Deposit Date Nov 16, 2021
Publicly Available Date Nov 16, 2021
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 503
Issue 1
Pages 614-624
DOI https://doi.org/10.1093/mnras/stab475

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Copyright Statement
© 2021 The Author(s).
Published by Oxford University Press on behalf of Royal Astronomical Society Published by Oxford University Press on behalf of Royal Astronomical Society.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which
permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.







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