A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535-571
Artikel i vetenskaplig tidskrift, 2018

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

X-rays: binaries

ISM: jets and outflows

black hole physics


Maria Cristina Baglio

Osservatorio Astronomico di Brera

New York University Abu Dhabi

David M. Russell

New York University Abu Dhabi

Piergiorgio Casella

Osservatorio Astronomico di Roma

Hind Al Noori

New York University Abu Dhabi

Aisha Al Yazeedi

New York University Abu Dhabi

Tomaso Belloni

Osservatorio Astronomico di Brera

David A.H. Buckley

South African Astronomical Observatory

Marion Cadolle Bel

SIXT Leasing

Chiara Ceccobello

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Galaktisk astrofysik

S. Corbel

USN - Station de Radioastronomie de Nancay

Institut de Recherche sur les Lois Fondamentales de l'Univers

Francesco Coti Zelati

Universitat Autonoma de Barcelona (UAB)

Osservatorio Astronomico di Brera

Institut d'Estudis Espacials de Catalunya (IEEC)

M. Diaz-Trigo

European Southern Observatory (ESO)

R. P. Fender

University of Oxford

Elena Gallo

University of Michigan

Poshak Gandhi

University of Southampton

Jeroen Homan

Eureka Scientific, Inc.

Netherlands Institute for Space Research (SRON)

Karri I.I. Koljonen

Turun Yliopisto


Fraser Lewis

Liverpool John Moores University

Cardiff University

T. J. Maccarone

Texas Tech University at Lubbock

Julien Malzac

Université de Toulouse

S. Markoff

Universiteit Van Amsterdam

J. C. A. Miller-Jones

Curtin University

Kieran O'Brien

Durham University

Thomas D. Russell

Universiteit Van Amsterdam

P. Saikia

New York University Abu Dhabi

Tariq Shahbaz

Instituto Astrofisico de Canarias

Universidad de la Laguna

G. R. Sivakoff

University of Alberta

Roberto Soria

Chinese Academy of Sciences

The University of Sydney

Curtin University

Vincenzo Testa

Osservatorio Astronomico di Roma

Alexandra J. Tetarenko

University of Alberta

East Asian Observatory

Mario E. Van Den Ancker

European Southern Observatory (ESO)

Federico M. Vincentelli

Universita degli Studi dell'Insubria

Osservatorio Astronomico di Brera

Osservatorio Astronomico di Roma

Astrophysical Journal

0004-637X (ISSN) 1538-4357 (eISSN)

Vol. 867 2 114


Astronomi, astrofysik och kosmologi

Atom- och molekylfysik och optik

Annan fysik



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