Fast infrared variability from the black hole candidate MAXI J1535-571 and tight constraints on the modelling
Fast infrared variability from the black hole candidate MAXI J1535-571 and tight constraints on the modelling
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.
X-rays: binaries, accretion, accretion discs
614–624
Vincentelli, Federico
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Casella, P.
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Russell, D.M.
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Baglio, M.C.
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Veledina, A.
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Maccarone, T.
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Malzac, J.
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Fender, R.
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O’Brien, K.
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Uttley, P.
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1 May 2021
Vincentelli, Federico
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Casella, P.
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Russell, D.M.
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Baglio, M.C.
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Veledina, A.
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Maccarone, T.
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Malzac, J.
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Fender, R.
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O’Brien, K.
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Uttley, P.
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Vincentelli, Federico, Casella, P., Russell, D.M., Baglio, M.C., Veledina, A., Maccarone, T., Malzac, J., Fender, R., O’Brien, K. and 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), .
(doi:10.1093/mnras/stab475).
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.
Text
Fast infrared variability from the black hole candidate MAXI J1535-571 and tight constraints on the modelling
- Accepted Manuscript
More information
Accepted/In Press date: 11 February 2021
e-pub ahead of print date: 19 February 2021
Published date: 1 May 2021
Additional Information:
Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
Keywords:
X-rays: binaries, accretion, accretion discs
Identifiers
Local EPrints ID: 449643
URI: http://eprints.soton.ac.uk/id/eprint/449643
ISSN: 1365-2966
PURE UUID: c33df06f-0b0f-4a2e-accf-22872b154d39
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Date deposited: 10 Jun 2021 16:30
Last modified: 16 Mar 2024 12:30
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Contributors
Author:
Federico Vincentelli
Author:
P. Casella
Author:
D.M. Russell
Author:
M.C. Baglio
Author:
A. Veledina
Author:
T. Maccarone
Author:
J. Malzac
Author:
R. Fender
Author:
K. O’Brien
Author:
P. Uttley
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