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A wildly flickering jet in the black hole X-ray binary MAXI J1535-571

A wildly flickering jet in the black hole X-ray binary MAXI J1535-571
A wildly flickering jet in the black hole X-ray binary MAXI J1535-571

We report on the results of optical, near-infrared (NIR), and mid-infrared observations of the black hole X-ray binary candidate (BHB) MAXI J1535-571 during its 2017/2018 outburst. During the first part of the outburst (MJD 58004-58012), the source shows an optical-NIR spectrum that is consistent with an optically thin synchrotron power law from a jet. After MJD 58015, however, the source faded considerably, the drop in flux being much more evident at lower frequencies. Before the fading, we measure a dereddened flux density of 100 mJy in the mid-infrared, making MAXI J1535-571 one of the brightest mid-infrared BHBs known so far. A significant softening of the X-ray spectrum is evident contemporaneous with the infrared fade. We interpret it as being due to the suppression of the jet emission, similar to the accretion-ejection coupling seen in other BHBs. However, MAXI J1535-571 did not transition smoothly to the soft state, instead showing X-ray hardness deviations associated with infrared flaring. We also present the first mid-IR variability study of a BHB on minute timescales, with a fractional rms variability of the light curves of ∼15%-22%, which is similar to that expected from the internal shock jet model, and much higher than the optical fractional rms (≲7%). These results represent an excellent case of multiwavelength jet spectral timing and demonstrate how rich, multiwavelength time-resolved data of X-ray binaries over accretion state transitions can help in refining models of the disk-jet connection and jet launching in these systems.

accretion, accretion disks, black hole physics, ISM: jets and outflows, X-rays: binaries
0004-637X
Cristina Baglio, Maria
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Russell, David M.
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Casella, Piergiorgio
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Al Noori, Hind
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Al Yazeedi, Aisha
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Belloni, Tomaso
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Buckley, David A.H.
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Cadolle Bel, Marion
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Ceccobello, Chiara
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Corbel, Stephane
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Coti Zelati, Francesco
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Díaz Trigo, Maria
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Fender, Rob P.
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Gallo, Elena
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Gandhi, Poshak
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Homan, Jeroen
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Koljonen, Karri I.I.
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Lewis, Fraser
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Maccarone, Thomas J.
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Malzac, Julien
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Markoff, Sera
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Miller-Jones, James C.A.
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O'Brien, Kieran
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Russell, Thomas D.
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Saikia, Payaswini
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Shahbaz, Tariq
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Sivakoff, Greg R.
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Soria, Roberto
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Testa, Vincenzo
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Tetarenko, Alexandra J.
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Van Den Ancker, Mario E.
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Vincentelli, Federico M.
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Cristina Baglio, Maria
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Russell, David M.
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Casella, Piergiorgio
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Al Noori, Hind
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Al Yazeedi, Aisha
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Belloni, Tomaso
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Buckley, David A.H.
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Cadolle Bel, Marion
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Ceccobello, Chiara
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Corbel, Stephane
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Coti Zelati, Francesco
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Díaz Trigo, Maria
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Fender, Rob P.
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Gallo, Elena
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Gandhi, Poshak
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Homan, Jeroen
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Koljonen, Karri I.I.
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Lewis, Fraser
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Maccarone, Thomas J.
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Malzac, Julien
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Markoff, Sera
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Miller-Jones, James C.A.
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O'Brien, Kieran
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Russell, Thomas D.
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Saikia, Payaswini
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Shahbaz, Tariq
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Sivakoff, Greg R.
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Soria, Roberto
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Testa, Vincenzo
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Tetarenko, Alexandra J.
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Van Den Ancker, Mario E.
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Vincentelli, Federico M.
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Cristina Baglio, Maria, Russell, David M., Casella, Piergiorgio, Al Noori, Hind, Al Yazeedi, Aisha, Belloni, Tomaso, Buckley, David A.H., Cadolle Bel, Marion, Ceccobello, Chiara, Corbel, Stephane, Coti Zelati, Francesco, Díaz Trigo, Maria, Fender, Rob P., Gallo, Elena, Gandhi, Poshak, Homan, Jeroen, Koljonen, Karri I.I., Lewis, Fraser, Maccarone, Thomas J., Malzac, Julien, Markoff, Sera, Miller-Jones, James C.A., O'Brien, Kieran, Russell, Thomas D., Saikia, Payaswini, Shahbaz, Tariq, Sivakoff, Greg R., Soria, Roberto, Testa, Vincenzo, Tetarenko, Alexandra J., Van Den Ancker, Mario E. and Vincentelli, Federico M. (2018) A wildly flickering jet in the black hole X-ray binary MAXI J1535-571. Astrophysical Journal, 867 (2), [114]. (doi:10.3847/1538-4357/aae532).

Record type: Article

Abstract

We report on the results of optical, near-infrared (NIR), and mid-infrared observations of the black hole X-ray binary candidate (BHB) MAXI J1535-571 during its 2017/2018 outburst. During the first part of the outburst (MJD 58004-58012), the source shows an optical-NIR spectrum that is consistent with an optically thin synchrotron power law from a jet. After MJD 58015, however, the source faded considerably, the drop in flux being much more evident at lower frequencies. Before the fading, we measure a dereddened flux density of 100 mJy in the mid-infrared, making MAXI J1535-571 one of the brightest mid-infrared BHBs known so far. A significant softening of the X-ray spectrum is evident contemporaneous with the infrared fade. We interpret it as being due to the suppression of the jet emission, similar to the accretion-ejection coupling seen in other BHBs. However, MAXI J1535-571 did not transition smoothly to the soft state, instead showing X-ray hardness deviations associated with infrared flaring. We also present the first mid-IR variability study of a BHB on minute timescales, with a fractional rms variability of the light curves of ∼15%-22%, which is similar to that expected from the internal shock jet model, and much higher than the optical fractional rms (≲7%). These results represent an excellent case of multiwavelength jet spectral timing and demonstrate how rich, multiwavelength time-resolved data of X-ray binaries over accretion state transitions can help in refining models of the disk-jet connection and jet launching in these systems.

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A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535-571 - Accepted Manuscript
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More information

Accepted/In Press date: 28 September 2018
e-pub ahead of print date: 6 November 2018
Published date: 10 November 2018
Additional Information: Author, Ghandi, has confirmed the Arxiv record is AM
Keywords: accretion, accretion disks, black hole physics, ISM: jets and outflows, X-rays: binaries

Identifiers

Local EPrints ID: 426798
URI: http://eprints.soton.ac.uk/id/eprint/426798
ISSN: 0004-637X
PURE UUID: 9bcfd01f-0c75-4c35-adf2-7a241d91f4d3
ORCID for Poshak Gandhi: ORCID iD orcid.org/0000-0003-3105-2615

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Date deposited: 12 Dec 2018 17:30
Last modified: 27 Jan 2020 13:47

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Contributors

Author: Maria Cristina Baglio
Author: David M. Russell
Author: Piergiorgio Casella
Author: Hind Al Noori
Author: Aisha Al Yazeedi
Author: Tomaso Belloni
Author: David A.H. Buckley
Author: Marion Cadolle Bel
Author: Chiara Ceccobello
Author: Stephane Corbel
Author: Francesco Coti Zelati
Author: Maria Díaz Trigo
Author: Rob P. Fender
Author: Elena Gallo
Author: Poshak Gandhi ORCID iD
Author: Jeroen Homan
Author: Karri I.I. Koljonen
Author: Fraser Lewis
Author: Thomas J. Maccarone
Author: Julien Malzac
Author: Sera Markoff
Author: James C.A. Miller-Jones
Author: Kieran O'Brien
Author: Thomas D. Russell
Author: Payaswini Saikia
Author: Tariq Shahbaz
Author: Greg R. Sivakoff
Author: Roberto Soria
Author: Vincenzo Testa
Author: Alexandra J. Tetarenko
Author: Mario E. Van Den Ancker

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